98+ 56mm Quad 4 Throttle Body Install

Dropped'01 · 11-01-2009, 05:10 PM

Just got my 56mm quad 4 throttle body off ebay for $20. It came off of a 95 Buick skylark 2.3L.

Throttle Body Cleaning

First thing I started doing is cleaning the throttle body. Mine and many others I have seen are extremely dirty. Items I used for this was Carb Cleaner, Wire brush, and a small wire wheel that connects into a drill.

I also unscrewed the two bolts that hold in the Idle Air Control Valve pulled it out of the throttle body. Once you pull it out there is a small O-Ring which needs to be cleaned along with the Valve and the port due a lot of debris inside.
Tool Needed (Torx Bit Socket T-20).

On the back side of the throttle body is the stock gasket which needs to be scraped off. After I finished scraping off the gasket, I took some light sand paper and went over the area where the gasket was which takes off any left over gasket and makes the surface smooth.

Replacement Parts
Autozone part #‘s
IACVAC138
TPS TPS142 (Throttle Positioning Sensor-Left side of TB)

After that I taped off the TB and painted it with Rust-oleum Aluminum.

Installation-Parts-& Tools

1. Ratchet, extension & 10mm socket.
2. Vacu-Tite! Part #’s 47359 & 47431 (T-ing off Vacuum Line)
3. 10mm X 1” bolt
4. 3 small washers
5. Mini hack-saw

I starting this assuming that you already have your intake off. First remove the 4 Vacuum hoses and unclip the IACV and the TPS. Hoses 1 and 2 will reconnect in same positions on new TB. Hoses 3 and 4 will be connected using a vacuum elbow and T Adapter.

Next remove the 4 bolts that hold on the stock TB. Keep the bolts because you will reuse 2 of them. Also will need to unhook the throttle cable from the TB.

After that the Stock throttle body will come off. Here is the two throttle bodies side by side.

Next reinstall the new TB using two of the original bolts. The new TB will bolt to the intake manifold using the top left and bottom right holes. The third hole is where you will use your 10mm bolt to help hold the throttle cable bracket. My throttle cable bracket didnt mate up perfectly so i used one small washer in between the throttle cable bracket and the TB on on the top right side. I also used two washer in between the throttle cable bracket and the TB for the top left side.

Next reattach hoses 1 & 2 to original positions. Then get the vacuum elbow and plastic T adapter to connect hoses 3 & 4. Also reconnect IACV and TPS.

Last I'm showing how i hooked up my Throttle cable. This TB was off a 95 buick so this part might be custom depending on what car you get the TB off of. Basically the S10 throttle cable was not long enough to hook into the stock position but there was a square hole in the plastic that the ball from the throttle cable would fit in. I took a mini hack saw and cut a small section of the plastic so that the cable could slide through. Also once this is done make sure the butterfly opens/closes all the way with out interference.

Then reinstall intake and start it up.

My truck started up and within 15-20 sec, it was at the usually 950-1000 idle rpm.

Dropped'01 · 11-01-2009, 05:15 PM

Hope this helps for the people planning on doing this in the future.

Also here the vehicles from a previous thread.

1988-1995 Buick Skylark
1988-1989 - 2.3L Quad 4 DOHC (LD2) 150HP Model: Custom, Limited
1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Custom, Gran Sport
1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Custom, Gran Sport, Luxury Edition
1992 - 2.3L Quad 4 OHC (L40) 120HP Model: Base
1993-1994 - 2.3L Quad 4 OHC (L40) 115HP Model: Custom, Limited
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: Custom, Limited

1990-1994 Chevrolet Beretta
1990-1992 - 2.3L Quad 4 DOHC (LGO) 180hp Model: GTZ
1993 - 2.3L Quad 4 DOHC (LGO) 175hp Model: GTZ
1994 - 2.3L Quad 4 DOHC (LGO) 170HP Model: Z26

1995 Chevrolet Cavalier
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: Z24

1992-1995 Oldsmobile Achieva
1992 - 2.3L Quad 4 OHC (L40) 120HP Model: S
1992 - 2.3L Quad 4 DOHC (LD2) 160HP Model: S, SL
1992 - 2.3L Quad 4 DOHC (LGO) 180HP Model: S
1992 - 2.3L Quad 4 DOHC (W41) 190HP Model: SCX
1993 - 2.3L Quad 4 DOHC (LD2) 155HP Model: S, SL
1993 - 2.3L Quad 4 DOHC (LGO) 175HP Model: S
1993 - 2.3L Quad 4 DOHC (W41) 185HP Model: SCX
1993-1994 - 2.3L Quad 4 OHC (L40) 115HP Model: S
1994 - 2.3L Quad 4 DOHC (LD2) 155HP Model: S, SC
1994 - 2.3L Quad 4 DOHC (LGO) 175HP Model: SC
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: S SERIES I & II

1988-1991 Oldsmobile Calais
1988-1989 - 2.3L Quad 4 DOHC (LD2) 150HP Model: International, SL
1990-1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: International, S, SL
1990-1991 - 2.3L Quad 4 DOHC (LGO) 180hp Model: International, S, 442
1991 - 2.3L Quad 4 DOHC (W41) 190hp Model: 442 W41

1990-1991 Oldsmobile Cutlass Supreme
1990 - 2.3L Quad 4 DOHC (LGO) 180HP Model: International
1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Base
1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Base

1988-1995 Pontiac Grand AM
1988-1989 - 2.3L Quad 4 DOHC (LD2) 150HP Model: SE, LE
1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: SE, LE
1990 - 2.3L Quad 4 DOHC (LGO) 180HP Model: SE
1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: LE
1991 - 2.3L Quad 4 DOHC (LGO) 180HP Model: SE, LE
1992 - 2.3L Quad 4 DOHC (LGO) 180HP Model: GT
1992 - 2.3L Quad 4 OHC (L40) 120HP Model: SE
1992 - 2.3L Quad 4 DOHC (LD2) 160HP Model: SE, GT
1993 - 2.3L Quad 4 DOHC (LGO) 175HP Model: GT
1993 - 2.3L Quad 4 DOHC (LD2) 155HP Model: SE, GT
1993-1994 - 2.3L Quad 4 OHC (L40) 115HP Model: SE
1994 - 2.3L Quad 4 DOHC (LGO) 175HP Model: GT
1994 - 2.3L Quad 4 DOHC (LD2) 150HP Model: GT
1995 - 2.3L Quad 4 DOHC (LD2) 150HP [Model: SE, GT

1990-1991 Pontiac Grand Prix
1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: LE
1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: LE, SE

1995 Pontiac Sunfire
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Mode

beandip · 11-02-2009, 02:12 AM

Sweet writeup man

i need to add this to my to-do list

chvys10 · 11-02-2009, 02:24 AM

I got mine off a 1995 Pontiac Sunfire
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Mode .... it was only a 56mm and my buddy took it to his shop, cleaned it out, and bored it out to a 58mm. I got it from my local junk yard for 30 bux and a e fan off of a firebird 25 bux. After that I drove 225 highway miles w/ no a/c and it used less than 7gal of gas!!!

sorry to jack

Dropped'01 · 11-02-2009, 02:42 AM

Thanks man i would definitely say this was as good of mod as my STS pulleys. Its a must have

Dropped'01 · 11-02-2009, 02:45 AM

Quote: Originally Posted by chvys10

I got mine off a 1995 Pontiac Sunfire
1995 - 2.3L Quad 4 DOHC (LD2) 150HP Mode .... it was only a 56mm and my buddy took it to his shop, cleaned it out, and bored it out to a 58mm. I got it from my local junk yard for 30 bux and a e fan off of a firebird 25 bux. After that I drove 225 highway miles w/ no a/c and it used less than 7gal of gas!!!

sorry to jack

No problem man good imput. Im going to see if my mpg gets any better this week but i can already feel the difference in throttle response and power

TCB2Country · 11-02-2009, 09:46 AM

I've got what may be a stupid question about boring, please forgive me, but does the butterfly need to be replaced if you do bore it out or will it still close...

theGINGERBREADMAN · 11-02-2009, 12:29 PM

Awesome write-up!! Now that you have done this I will be installing mine thanks to your help.

Dropped'01 · 11-02-2009, 12:43 PM

Quote: Originally Posted by TCB2Country

I've got what may be a stupid question about boring, please forgive me, but does the butterfly need to be replaced if you do bore it out or will it still close...

I think you would need a new butterfly because when its closed it there is a less then paper thin gap in between the butterfly and the inside of the tb. With out replacing the butterfly i dont think the truck will idle correctly because too much air is passing through when its closed.

Dropped'01 · 11-02-2009, 04:00 PM

Quote: Originally Posted by theGINGERBREADMAN

Awesome write-up!! Now that you have done this I will be installing mine thanks to your help.

Hey if your throttle cable hooks up differently then mine or anything else goes differently with your install then post up some pics so we can see.

hondacr125 · 11-03-2009, 04:12 PM

where did you notice improvements in power? and does anyone know how muhc hp this adds? im deff looking into doing this but i cant find one for sale anywhere

***What?*** · 11-03-2009, 07:02 PM

Look in junkyards with all the vehicle listed above but you need one from certain motor to fit as listed above.

I notice power in all range, my mpg didn't improve but definitely better power adder, not bad at all for the cost.

As far as I know, no one dyno 56mmTb from stock.

Look through eBay, craigslist, backpage, classified or have someone buy it for you and ship it.

Dropped'01 · 11-03-2009, 09:07 PM

Quote: Originally Posted by hondacr125

where did you notice improvements in power? and does anyone know how muhc hp this adds? im deff looking into doing this but i cant find one for sale anywhere

As what? said you notice it through the rpm range. My trucks exhaust seems louder and my truck seems to make it up the hills around here better then before the mod. If your doing intake/exhaust then you should definitely do this along with it.

chvys10 · 11-04-2009, 04:52 AM

When I was driving 70-75 on the highway b4 the TB and e-fan mod my RPM's were up to 3K.... w/ the TB MOD and e-fan doing 70-75 w/ 235/40/20 my RPM's were at 2500-2700.

Mechnix · 11-04-2009, 05:45 PM

Quote: Originally Posted by chvys10

When I was driving 70-75 on the highway b4 the TB and e-fan mod my RPM's were up to 3K.... w/ the TB MOD and e-fan doing 70-75 w/ 235/40/20 my RPM's were at 2500-2700.

So your saying the 56mm TB mod changed your gear ratio's?

chvys10 · 11-04-2009, 07:08 PM

I was talking to my buddy today, he said between the MODS and going from 18's to 20's did it

Mechnix · 11-04-2009, 08:13 PM

yeah going from 18's to 20's will change the overall gear ratio if the tire diameter is bigger...

theGINGERBREADMAN · 11-06-2009, 02:01 AM

Quote: Originally Posted by Dropped'01

Hey if your throttle cable hooks up differently then mine or anything else goes differently with your install then post up some pics so we can see.

seems like the cable will hook up the same way as you've got yours. Whats the part number for a replacement gasket that I will need?

Dropped'01 · 11-06-2009, 02:29 AM

You dont need a replacement gasket because the S10 intake manafold has a press rubber gasket. Just use the one that's connected to the intake manifold and you will be fine.

***What?*** · 11-06-2009, 10:43 PM

TB gasket isn't needed, you also don't need gasket maker for it either.

***What?*** · 11-07-2009, 03:38 PM

Quote: Originally Posted by Mechnix

yeah going from 18's to 20's will change the overall gear ratio if the tire diameter is bigger...

Correct, trans gear, ring/pinion and tire fize affect rpm/mph.

Smaller tire = higher rpm, mileage roll faster

Taller tire = lower rpm, mileage roll slower.

IsuzuTurbo · 11-07-2009, 08:24 PM

Nice Thtead man

Dropped'01 · 11-07-2009, 08:53 PM

Thanks Man

DMP · 11-09-2009, 02:51 AM

Nice write-up. As long as it seals good and the throttle cable doesnt break, I think ill do this mod.

TCB2Country · 11-10-2009, 12:53 PM

Awesome write-up! I literally just got finished doing this and it's amazing! For the money and time spent, no comparison! I only have one problem, maybe someone can help me with. I have Cruise Control and it mounted up just fine, however, the cable is too short and holds throttle at about 1/4 when bolted up. The plastic bracket that mount to TB looks like it might be adjustable, but I'm kinda heavy handed and have already broken a small piece of the cable pulley. If anyone knows a solution, short of just not having CC hooked up (as it is now) let me know... thanks again for a great how-to!

***What?*** · 11-10-2009, 07:57 PM

Look at other 56mmTB thread about it, scubadog explained about CC cable part.

I'll have to copy and paste it here.

my_nightmare · 11-12-2009, 11:41 PM

Awesome info and write-up here!!! I'm curious. I wonder what yur gas mileage is after the exchange? Keep up the good work there !!

theGINGERBREADMAN · 11-14-2009, 02:28 PM

I just installed mine and was wondering if I was supposed to keep the top sensor that was in the new tb in it because I put mine in instead. I also noticed it sometimes sits at a higher idle when I first stop

Dropped'01 · 11-14-2009, 10:00 PM

I guessing your talking about the Idle Air Control Valve (First Pic?). I used the one that came with the 56mm tb . Mine will usually sit at 1100 or so but then once you come to a complete stop it will usually drop down to 950+ within like 3 seconds or so.

theGINGERBREADMAN · 11-15-2009, 03:52 AM

k what ill do is switch it back tomorrow and see how that works, thanks again for ur help

11-01-2009, 05:10 PM	#1
Dropped'01 Registered User Age: 26 Join Date: Jul 2008 Posts: 713 Location: So-Cal User is: OffLine	Just got my 56mm quad 4 throttle body off ebay for $20. It came off of a 95 Buick skylark 2.3L. Throttle Body Cleaning First thing I started doing is cleaning the throttle body. Mine and many others I have seen are extremely dirty. Items I used for this was Carb Cleaner, Wire brush, and a small wire wheel that connects into a drill. I also unscrewed the two bolts that hold in the Idle Air Control Valve pulled it out of the throttle body. Once you pull it out there is a small O-Ring which needs to be cleaned along with the Valve and the port due a lot of debris inside. Tool Needed (Torx Bit Socket T-20). On the back side of the throttle body is the stock gasket which needs to be scraped off. After I finished scraping off the gasket, I took some light sand paper and went over the area where the gasket was which takes off any left over gasket and makes the surface smooth. Replacement Parts Autozone part #‘s IACVAC138 TPS TPS142 (Throttle Positioning Sensor-Left side of TB) After that I taped off the TB and painted it with Rust-oleum Aluminum. Installation-Parts-& Tools 1. Ratchet, extension & 10mm socket. 2. Vacu-Tite! Part #’s 47359 & 47431 (T-ing off Vacuum Line) 3. 10mm X 1” bolt 4. 3 small washers 5. Mini hack-saw I starting this assuming that you already have your intake off. First remove the 4 Vacuum hoses and unclip the IACV and the TPS. Hoses 1 and 2 will reconnect in same positions on new TB. Hoses 3 and 4 will be connected using a vacuum elbow and T Adapter. Next remove the 4 bolts that hold on the stock TB. Keep the bolts because you will reuse 2 of them. Also will need to unhook the throttle cable from the TB. After that the Stock throttle body will come off. Here is the two throttle bodies side by side. Next reinstall the new TB using two of the original bolts. The new TB will bolt to the intake manifold using the top left and bottom right holes. The third hole is where you will use your 10mm bolt to help hold the throttle cable bracket. My throttle cable bracket didnt mate up perfectly so i used one small washer in between the throttle cable bracket and the TB on on the top right side. I also used two washer in between the throttle cable bracket and the TB for the top left side. Next reattach hoses 1 & 2 to original positions. Then get the vacuum elbow and plastic T adapter to connect hoses 3 & 4. Also reconnect IACV and TPS. Last I'm showing how i hooked up my Throttle cable. This TB was off a 95 buick so this part might be custom depending on what car you get the TB off of. Basically the S10 throttle cable was not long enough to hook into the stock position but there was a square hole in the plastic that the ball from the throttle cable would fit in. I took a mini hack saw and cut a small section of the plastic so that the cable could slide through. Also once this is done make sure the butterfly opens/closes all the way with out interference. Then reinstall intake and start it up. My truck started up and within 15-20 sec, it was at the usually 950-1000 idle rpm. Last edited by orangesonoma : 11-07-2009 at 02:03 PM.
	[Reply w/Quote]

11-01-2009, 05:15 PM	#2
Dropped'01 Registered User Age: 26 Join Date: Jul 2008 Posts: 713 Location: So-Cal User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Hope this helps for the people planning on doing this in the future. Also here the vehicles from a previous thread. 1988-1995 Buick Skylark 1988-1989 - 2.3L Quad 4 DOHC (LD2) 150HP Model: Custom, Limited 1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Custom, Gran Sport 1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Custom, Gran Sport, Luxury Edition 1992 - 2.3L Quad 4 OHC (L40) 120HP Model: Base 1993-1994 - 2.3L Quad 4 OHC (L40) 115HP Model: Custom, Limited 1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: Custom, Limited 1990-1994 Chevrolet Beretta 1990-1992 - 2.3L Quad 4 DOHC (LGO) 180hp Model: GTZ 1993 - 2.3L Quad 4 DOHC (LGO) 175hp Model: GTZ 1994 - 2.3L Quad 4 DOHC (LGO) 170HP Model: Z26 1995 Chevrolet Cavalier 1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: Z24 1992-1995 Oldsmobile Achieva 1992 - 2.3L Quad 4 OHC (L40) 120HP Model: S 1992 - 2.3L Quad 4 DOHC (LD2) 160HP Model: S, SL 1992 - 2.3L Quad 4 DOHC (LGO) 180HP Model: S 1992 - 2.3L Quad 4 DOHC (W41) 190HP Model: SCX 1993 - 2.3L Quad 4 DOHC (LD2) 155HP Model: S, SL 1993 - 2.3L Quad 4 DOHC (LGO) 175HP Model: S 1993 - 2.3L Quad 4 DOHC (W41) 185HP Model: SCX 1993-1994 - 2.3L Quad 4 OHC (L40) 115HP Model: S 1994 - 2.3L Quad 4 DOHC (LD2) 155HP Model: S, SC 1994 - 2.3L Quad 4 DOHC (LGO) 175HP Model: SC 1995 - 2.3L Quad 4 DOHC (LD2) 150HP Model: S SERIES I & II 1988-1991 Oldsmobile Calais 1988-1989 - 2.3L Quad 4 DOHC (LD2) 150HP Model: International, SL 1990-1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: International, S, SL 1990-1991 - 2.3L Quad 4 DOHC (LGO) 180hp Model: International, S, 442 1991 - 2.3L Quad 4 DOHC (W41) 190hp Model: 442 W41 1990-1991 Oldsmobile Cutlass Supreme 1990 - 2.3L Quad 4 DOHC (LGO) 180HP Model: International 1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Base 1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: Base 1988-1995 Pontiac Grand AM 1988-1989 - 2.3L Quad 4 DOHC (LD2) 150HP Model: SE, LE 1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: SE, LE 1990 - 2.3L Quad 4 DOHC (LGO) 180HP Model: SE 1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: LE 1991 - 2.3L Quad 4 DOHC (LGO) 180HP Model: SE, LE 1992 - 2.3L Quad 4 DOHC (LGO) 180HP Model: GT 1992 - 2.3L Quad 4 OHC (L40) 120HP Model: SE 1992 - 2.3L Quad 4 DOHC (LD2) 160HP Model: SE, GT 1993 - 2.3L Quad 4 DOHC (LGO) 175HP Model: GT 1993 - 2.3L Quad 4 DOHC (LD2) 155HP Model: SE, GT 1993-1994 - 2.3L Quad 4 OHC (L40) 115HP Model: SE 1994 - 2.3L Quad 4 DOHC (LGO) 175HP Model: GT 1994 - 2.3L Quad 4 DOHC (LD2) 150HP Model: GT 1995 - 2.3L Quad 4 DOHC (LD2) 150HP [Model: SE, GT 1990-1991 Pontiac Grand Prix 1990 - 2.3L Quad 4 DOHC (LD2) 160HP Model: LE 1991 - 2.3L Quad 4 DOHC (LD2) 160HP Model: LE, SE 1995 Pontiac Sunfire 1995 - 2.3L Quad 4 DOHC (LD2) 150HP Mode
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11-02-2009, 02:12 AM	#3
beandip I'm Back!! Age: 21 Join Date: Sep 2006 Posts: 6,991 Location: Somewhere, OK User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Sweet writeup man i need to add this to my to-do list
	[Reply w/Quote]

11-02-2009, 02:24 AM	#4
chvys10 Mr. Token Black Age: 33 Join Date: Mar 2003 Posts: 2,091 Location: Ft. Lauderdale, FL User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install I got mine off a 1995 Pontiac Sunfire 1995 - 2.3L Quad 4 DOHC (LD2) 150HP Mode .... it was only a 56mm and my buddy took it to his shop, cleaned it out, and bored it out to a 58mm. I got it from my local junk yard for 30 bux and a e fan off of a firebird 25 bux. After that I drove 225 highway miles w/ no a/c and it used less than 7gal of gas!!! sorry to jack
	[Reply w/Quote]

11-02-2009, 02:42 AM	#5
Dropped'01 Registered User Age: 26 Join Date: Jul 2008 Posts: 713 Location: So-Cal User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Thanks man i would definitely say this was as good of mod as my STS pulleys. Its a must have
	[Reply w/Quote]

11-02-2009, 02:45 AM	#6
Dropped'01 Registered User Age: 26 Join Date: Jul 2008 Posts: 713 Location: So-Cal User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Quote: Originally Posted by chvys10 I got mine off a 1995 Pontiac Sunfire 1995 - 2.3L Quad 4 DOHC (LD2) 150HP Mode .... it was only a 56mm and my buddy took it to his shop, cleaned it out, and bored it out to a 58mm. I got it from my local junk yard for 30 bux and a e fan off of a firebird 25 bux. After that I drove 225 highway miles w/ no a/c and it used less than 7gal of gas!!! sorry to jack No problem man good imput. Im going to see if my mpg gets any better this week but i can already feel the difference in throttle response and power
	[Reply w/Quote]

11-02-2009, 09:46 AM	#7
TCB2Country Registered User Join Date: Aug 2009 Posts: 31 Location: User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install I've got what may be a stupid question about boring, please forgive me, but does the butterfly need to be replaced if you do bore it out or will it still close...
	[Reply w/Quote]

11-02-2009, 12:29 PM	#8
theGINGERBREADMAN Registered User Join Date: Aug 2002 Posts: 389 Location: User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Awesome write-up!! Now that you have done this I will be installing mine thanks to your help.
	[Reply w/Quote]

11-02-2009, 12:43 PM	#9
Dropped'01 Registered User Age: 26 Join Date: Jul 2008 Posts: 713 Location: So-Cal User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Quote: Originally Posted by TCB2Country I've got what may be a stupid question about boring, please forgive me, but does the butterfly need to be replaced if you do bore it out or will it still close... I think you would need a new butterfly because when its closed it there is a less then paper thin gap in between the butterfly and the inside of the tb. With out replacing the butterfly i dont think the truck will idle correctly because too much air is passing through when its closed.
	[Reply w/Quote]

11-02-2009, 04:00 PM	#10
Dropped'01 Registered User Age: 26 Join Date: Jul 2008 Posts: 713 Location: So-Cal User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Quote: Originally Posted by theGINGERBREADMAN Awesome write-up!! Now that you have done this I will be installing mine thanks to your help. Hey if your throttle cable hooks up differently then mine or anything else goes differently with your install then post up some pics so we can see.
	[Reply w/Quote]

11-03-2009, 04:12 PM	#11
hondacr125 Registered User Join Date: Nov 2008 Posts: 229 Location: User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install where did you notice improvements in power? and does anyone know how muhc hp this adds? im deff looking into doing this but i cant find one for sale anywhere
	[Reply w/Quote]

11-03-2009, 07:02 PM	#12
*What?* Moderator Join Date: Jan 2004 Posts: 17,376 Location: AZ User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Look in junkyards with all the vehicle listed above but you need one from certain motor to fit as listed above. I notice power in all range, my mpg didn't improve but definitely better power adder, not bad at all for the cost. As far as I know, no one dyno 56mmTb from stock. Look through eBay, craigslist, backpage, classified or have someone buy it for you and ship it.
	[Reply w/Quote]

11-03-2009, 09:07 PM	#13
Dropped'01 Registered User Age: 26 Join Date: Jul 2008 Posts: 713 Location: So-Cal User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Quote: Originally Posted by hondacr125 where did you notice improvements in power? and does anyone know how muhc hp this adds? im deff looking into doing this but i cant find one for sale anywhere As what? said you notice it through the rpm range. My trucks exhaust seems louder and my truck seems to make it up the hills around here better then before the mod. If your doing intake/exhaust then you should definitely do this along with it.
	[Reply w/Quote]

11-04-2009, 04:52 AM	#14
chvys10 Mr. Token Black Age: 33 Join Date: Mar 2003 Posts: 2,091 Location: Ft. Lauderdale, FL User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install When I was driving 70-75 on the highway b4 the TB and e-fan mod my RPM's were up to 3K.... w/ the TB MOD and e-fan doing 70-75 w/ 235/40/20 my RPM's were at 2500-2700.
	[Reply w/Quote]

11-04-2009, 05:45 PM	#15
Mechnix Registered User Join Date: Feb 2009 Posts: 340 Location: User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Quote: Originally Posted by chvys10 When I was driving 70-75 on the highway b4 the TB and e-fan mod my RPM's were up to 3K.... w/ the TB MOD and e-fan doing 70-75 w/ 235/40/20 my RPM's were at 2500-2700. So your saying the 56mm TB mod changed your gear ratio's?
	[Reply w/Quote]

11-04-2009, 07:08 PM	#16
chvys10 Mr. Token Black Age: 33 Join Date: Mar 2003 Posts: 2,091 Location: Ft. Lauderdale, FL User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install I was talking to my buddy today, he said between the MODS and going from 18's to 20's did it
	[Reply w/Quote]

11-04-2009, 08:13 PM	#17
Mechnix Registered User Join Date: Feb 2009 Posts: 340 Location: User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install yeah going from 18's to 20's will change the overall gear ratio if the tire diameter is bigger...
	[Reply w/Quote]

11-06-2009, 02:01 AM	#18
theGINGERBREADMAN Registered User Join Date: Aug 2002 Posts: 389 Location: User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Quote: Originally Posted by Dropped'01 Hey if your throttle cable hooks up differently then mine or anything else goes differently with your install then post up some pics so we can see. seems like the cable will hook up the same way as you've got yours. Whats the part number for a replacement gasket that I will need?
	[Reply w/Quote]

11-06-2009, 02:29 AM	#19
Dropped'01 Registered User Age: 26 Join Date: Jul 2008 Posts: 713 Location: So-Cal User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install You dont need a replacement gasket because the S10 intake manafold has a press rubber gasket. Just use the one that's connected to the intake manifold and you will be fine.
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11-06-2009, 10:43 PM	#20
*What?* Moderator Join Date: Jan 2004 Posts: 17,376 Location: AZ User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install TB gasket isn't needed, you also don't need gasket maker for it either.
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11-07-2009, 03:38 PM	#21
*What?* Moderator Join Date: Jan 2004 Posts: 17,376 Location: AZ User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Quote: Originally Posted by Mechnix yeah going from 18's to 20's will change the overall gear ratio if the tire diameter is bigger... Correct, trans gear, ring/pinion and tire fize affect rpm/mph. Smaller tire = higher rpm, mileage roll faster Taller tire = lower rpm, mileage roll slower.
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11-07-2009, 08:24 PM	#22
IsuzuTurbo Registered User Join Date: Sep 2008 Posts: 28 Location: User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Nice Thtead man
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11-07-2009, 08:53 PM	#23
Dropped'01 Registered User Age: 26 Join Date: Jul 2008 Posts: 713 Location: So-Cal User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Thanks Man
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11-09-2009, 02:51 AM	#24
DMP Registered User Join Date: May 2007 Posts: 1,140 Location: Jersey User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Nice write-up. As long as it seals good and the throttle cable doesnt break, I think ill do this mod.
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11-10-2009, 12:53 PM	#25
TCB2Country Registered User Join Date: Aug 2009 Posts: 31 Location: User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Awesome write-up! I literally just got finished doing this and it's amazing! For the money and time spent, no comparison! I only have one problem, maybe someone can help me with. I have Cruise Control and it mounted up just fine, however, the cable is too short and holds throttle at about 1/4 when bolted up. The plastic bracket that mount to TB looks like it might be adjustable, but I'm kinda heavy handed and have already broken a small piece of the cable pulley. If anyone knows a solution, short of just not having CC hooked up (as it is now) let me know... thanks again for a great how-to!
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11-10-2009, 07:57 PM	#26
*What?* Moderator Join Date: Jan 2004 Posts: 17,376 Location: AZ User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Look at other 56mmTB thread about it, scubadog explained about CC cable part. I'll have to copy and paste it here.
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11-12-2009, 11:41 PM	#27
my_nightmare Mr. Fix-it Perfectionist Join Date: Nov 2009 Posts: 23 Location: Georgia User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install Awesome info and write-up here!!! I'm curious. I wonder what yur gas mileage is after the exchange? Keep up the good work there !!
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11-14-2009, 02:28 PM	#28
theGINGERBREADMAN Registered User Join Date: Aug 2002 Posts: 389 Location: User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install I just installed mine and was wondering if I was supposed to keep the top sensor that was in the new tb in it because I put mine in instead. I also noticed it sometimes sits at a higher idle when I first stop
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11-14-2009, 10:00 PM	#29
Dropped'01 Registered User Age: 26 Join Date: Jul 2008 Posts: 713 Location: So-Cal User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install I guessing your talking about the Idle Air Control Valve (First Pic?). I used the one that came with the 56mm tb . Mine will usually sit at 1100 or so but then once you come to a complete stop it will usually drop down to 950+ within like 3 seconds or so.
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11-15-2009, 03:52 AM	#30
theGINGERBREADMAN Registered User Join Date: Aug 2002 Posts: 389 Location: User is: OffLine	Re: 98+ 56mm Quad 4 Throttle Body Install k what ill do is switch it back tomorrow and see how that works, thanks again for ur help
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