Built 4.3 turbo underway Pics will talk

[Zygoat]

Quote: Originally Posted by meyers2211

I walk in and smile, I see a Twin turbo GTS viper, tube frame right hand drive Evo, and drag eclipse and was like this is my guy.

yea that would do it.

[americasfuture2k]

Quote: Originally Posted by rat

Turn off the code.

damn. i need a tuner....

[meyers2211]

Ok well 10am truck got strapped down to the dyno and tuning began. Me and the tuner enzo worked side by side the whole day and after 2 hours of part throttle he started sweeps. Knowing ahead of time of a small exhaust leak on the driver side bank, on the crossover. Which was small at 10am and grew to a big crack by 430pm. So after 15 pulls i threw it the towel and he promised to weld up the crack no charge and strap it bak down for a final run.

First pull
Stock timing
12.0afr
40 degrees out
9.5psi boost

336whp

Then after adding 2 degrees in timing, we picked up 15hp around 5000rpm which gave me a smooth power band from 4200rpm pulling all the way to 5500rpm+. Adding more than 20 degrees worth of timing did not result in knock just a loss in power, so we never had to dance that line of knock vs. power. 18.5 degrees to 4800 then 20 degrees to 6000rpm.

Changing the timing resulted in 341whp peak but extended the power band 15hp till 6000rpm. As opposed to the first run which peaked and then tapered down to 315whp.

Next 5 runs all were repeatable 12.0afr, with a slight peak to 12.2- 12.3 where we made peak power. 340whp-342whp since we were all dialed in we went for power pulls, my RR tire had 20psi so we threw 30psi in both tires and put down 351whp!!!!!!!!!!! :-) at 9psi

Best power pull was 351.5whp @ 5100rpm
397 ft lbs torque @4400rpm

we later did a pull for 353whp but only brought it to 5100 and got out of the throttle.

By this time the exhaust tubing crack grew so next thursday he will weld up the pipe and hopefully i will see boost earlier with more power.





another test pull we made 353.2whp @5100rpm

[americasfuture2k]

wow

[meyers2211]

The videos are going thru approval from myspace but i will post a few dyno pics

[americasfuture2k]

try loading the videos throu photobucket or youtube. photobucket has no problem at all.

[meyers2211]

http://myspacetv.com/index.cfm?fusea...oid=25442 464


jus a vid on the dyno nothing spectacular, my buddy filmed most of it so we will be putting a ncie video together

[cycle252]

Now that is pretty nice one question though... you going to up the boost? .... whats your final hp goals?

[Zygoat]

nice like the vid and the numbers! looking forward to the final vid. so the add. injectors are working well then?

[meyers2211]

my goal for the day were 350whp at 9psi, i really would like to keep the boost level at 9psi for awile because i have a relatively safe setup. I will put on a boost controller and kick it to 11psi-12psi and hopefully hit my 400whp mark and that will probably be the most i want to push this setup.

The secondary injectors worked very well, granted we had to tune the stock # 19lb injectors around then because then have two dials, vacuum boost as well as gain. But other than WOT at full boost coming into boost needed a considerable amount of tuning. If the SDS system had adjustment to take away or add fuel at a certain rpm that would have been ideal.

two notes this was on a dyno dynamics but calibrated for dynojet numbers. As long as we did not leave too much power on the tables i was content with dynoing 330whp or better.

Last note: Holy S%^T i had no idea how much an air filter kills the turbo. I was running without air filter and front grille to monitor the engine better. End of the day we ran it with the air filter lol dropped 8hp with the air filter and it richened up the fuel to 11.9

[meyers2211]

Quote: Originally Posted by Zygoat

nice like the vid and the numbers! looking forward to the final vid. so the add. injectors are working well then?

two 96lb injectors at 351whp pushed them to 75% cycle duty. I got to see the leds under the hood on the dyno run. Not that i will need another but if i ever needed more fuel i'm sure i could split the injector harness and use three secondary injectors

[sy-clone]

Props dude! Hope my setup works as well. Keep it goiin! PEACE>Tony

[meyers2211]

i got the exhaust manifold and xover pipe crack welded today, the tuner weld the crack as well as putting a collar around the weak spot out of 16 gauge stainless. It came out great except the xcrossover no longer lines up. the flanges are together flat but off by 1/2". So yet another couple of days and more money.

[s10ls]

good job, great numbers

more money is the name of the game lol

might be better of just making a new crossover

[rentedmule]

wow, great numbers is right. gotta love that 400ft/lbs

[shift220]

Quote: Originally Posted by meyers2211

i got the exhaust manifold and xover pipe crack welded today, the tuner weld the crack as well as putting a collar around the weak spot out of 16 gauge stainless. It came out great except the xcrossover no longer lines up. the flanges are together flat but off by 1/2". So yet another couple of days and more money.

Are you running a flex pipe? That made life so much easier for me.

[meyers2211]

I'm tite on clearance so i'd prefer no flex but i dropped it off at a race fabrication shop MI performance to put in the limited slip, fix the exhaust, and install a tow hook

[s10ls]

you could atleast do a slip joint for some adjustability, like the stock syty crossovers

[PhatBoy]

crap...now you make me wanna go turbo again. How much you have invested in the entire setup?

[deircr3]

one question aswell man wheres ur cooling fans lol

[S15jimmy]

thats amazing, im wanting to turbo my 93 jimmy, im buying a toyota supra turbo from my buddy in a couple weeks and start with that, I started a thread title Supra Turbo for a 4.3, throw me some ideas if you get a chance. I'm hoping for numbers like yours when im done.

[meyers2211]

Quote: Originally Posted by deircr3

one question aswell man wheres ur cooling fans lol

16" electric fan is my cooling fan, and as for the entire setup over 6000.

[americasfuture2k]

if you have room, the LS1 cooling fan conversion works better than great.

[BudRacing]

Looks like he's got room to me:

[meyers2211]

lol yea i have plently of room. My current cooling setup is not sufficient i'm jus not overheating because its 20 degrees out. August rolls around and i'm sure cooling will be another problem.

I switched from a 5spd radiator to a automatic radiator out of a blazer. It was much thicker. Idk if using a better fan system will solve the problem. The temps under the hood must be ridiculous now that the turbo exhaust piping is there and thats definately the main factor of my cooling problems.

Options
Bigger Radiator
Hood scoop to get fresh air in, or a cowl.
better fan and or fans

Picking up a 10 bolt from jersey with a LSD and 3:42's (no slicks on this rear)
Finish interior gauges
Tuning adjustments, I was not happy with some aspects of my tune. I have to work on slowly leaning out the truck for fuel economy.
Throwing new tr6;s in gapped at .030's
More weight reduction.
Truck gets put bak on dyno next week

Progress video is in the making.

[BudRacing]

I'd give the LS1 fans a try. They may move enough air out of the engine bay when they're on to lower ambient temps.

[shift220]

I have the same problem. With my intercooler and A/C, the damn thing will overheat in slow traffic when its warm out. My 16" S-blade Syclone fan will not keep up. I'm thinking of modifying my inners to allow air to flow into the engine bay and maybe working something out with the bumper. I wish there was an easy, cheap radiator swap... I couldn't find anything

[meyers2211]

i believe the c4 corvette has similar dimensions to ours, i never followed thru wit it. I wonder if a hood scoop would help reduce engine bay temps, but then again if u are in traffic it would be pointless

[rentedmule]

JTR used to have an HD rad but they're not available anymore - I think it was from a vette, or at least based on it

[americasfuture2k]

Quote: Originally Posted by BudRacing

I'd give the LS1 fans a try. They may move enough air out of the engine bay when they're on to lower ambient temps.

i second these! i have some in my truck. with a variable speed controller (VSC) from summit, and it works great! looks stock too if you follow the s-10crewcab buildup.

[sy-clone]

You would be wise to get some thermal rapping on your down pipe. Double it up so it really insulates. It will aid in keeping your underhood temps down. PEACE>Tony

[meyers2211]

lol that pic was the day of the exhaust work, from before i even had even finished the cooling system

heres the latest

[americasfuture2k]

haha, the first thing i noticed from that picture is the missing AC and cruise. you dont wanna cruise at 148 with the AC??