S-10 Forum is the resource on GM S-series trucks, Suspension, engine information, Body Modifications, painting tutorials.  Modifications to suit every need, budget and whim

91 s10 4wd sas conversion


Go Back   S-10 Forum > Suspension Tech > Liftin' It > 4wd SFA

GM, SUV, Trucks, Nascar, Racing, Sport Utility, S10Forum.com

 
LinkBack Thread Tools
Old 07-13-2009, 12:39 PM   #51
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by bouchee2007
how easy is it to clock the t-case
I'm not even aware of the availability of parts to clock our t-cases, to be honest, but for Dana 300s, 205s, etc. you can go out and buy "clocking rings" and such to allow you to rotate the cases position. You can check, but I don't know what you'll be able to find.

Also, if the driveline angle is that extreme, you probably wouldn't want to have to clock the case so far down. It just wouldn't be ideal. Now if you could find parts to clock the t-case a little bit AND tipping the pinion a fraction helped, then you would be okay, but I'm not sure if that is even the situation or not.
Old 07-13-2009, 12:42 PM   #52
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by BigBoy70
there is a simple solution to this problem........but only if you intend it to be a trailer queen.

If you intend to drive it on the road I suggest the above posts.........

If it will be trail driven only you can change the yoke position by changing the spring perch location. Although most people will disagree with this, I have found it works resonable well in small amounts. too much and oiller will not work properly for the ring gear.
This is the same thing as tilting the pinion up. Exact same concept.

It sounds like the guy is going to be driving this some on the road, but I'm not sure. Either way, with the amount he would have to move the pinion and re-weld the perches, his steering links would be facing the ground, which means his turning ability is going to be a disaster. The whole point of the steering setup is to not have to turn the portion of the tire that has the weight of the vehicle on it, a.k.a. the bottom of the tire.

Regardless of if he drove it much on the road or not, this wouldn't last long I don't think.
Old 07-13-2009, 01:32 PM   #53
Registered User
 
nyteRyda's Avatar
 
Age: 26
Join Date: Apr 2008
Posts: 541
Location: Kingston Pa
User is: OffLine
Re: 91 s10 4wd sas conversion

Ok I want to feed some insight before he gets too deep into this project...

It could be just me and I could be a complete idiot but whatever...

His shackle angle is horrible with weight on the truck its way to far towards the front of the truck...

and with that being said he is running stock jeep leaf springs it looks like...

so maybe thats half the reason his pinion angle sucks so bad...I would say if he got different leaf springs or fixed his shackle angle it would probably make his pinion a little better...i mean it could all just be me too...who knows...

my .02
Old 07-13-2009, 01:57 PM   #54
Minnesota Man
 
black_blazer's Avatar
 
Age: 28
Join Date: Jan 2006
Posts: 438
Location: land of ice and snow
User is: OffLine
Re: 91 s10 4wd sas conversion

It looks to me that your front hanger is at a much higher mounting point then the shackle mount and the leafs are sitting like so / in a sense.

If you redo the front hanger with "lower" points and make your springs sit more like so _ , I would think that would correct a good bit of it but I also think your gonna have to redo the perches at a little different angle as well.

I could be wrong easily, I'm still in the learning pool myself
Old 07-13-2009, 04:35 PM   #55
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

Guys, keep in mind that he has bigger tires on the front end and hasn't done anything to the rear. It makes it look pretty distorted, as far as the angles of the springs, etc., look.
Old 07-13-2009, 06:04 PM   #56
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

ok just to clear somethings up yes it is going to be driven on the road but not in 4wd, so the shaft wont be turning unless im off road., the shackle angle has been fixed, they sit just a little bit behind vertical, they point about 5 degrees back. yes the front spring cross member sits higher that the back. regardless, today i did some toying around with the front axle. the castor is set at 5 degrees back and the pinion angle is pointing in a good direction its close to pointing almost at the t-case. but none the less, the pinion is at a decent location but it still binds at the t-case.

would a high angle driveline be able to solve this problem ? if not what other options do i have?
Old 07-13-2009, 06:17 PM   #57
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

What do you mean 5 degrees back? That would be tilting the pinion down, if I am reading you right.

Also, if the pinion is almost pointing at the t-case, it shouldn't be binding, but I'd have to see a picture to be able to tell.

If you ever plan to be able to run 4x4 on the road (extreme weather conditions, etc.): From what I know, you can point the pinion up at the t-case and if it is too extreme for the t-case yoke you would need to run a CV driveshaft (joints/yokes are being run at much different angles. Running a standard shaft, you would want the angles of the yokes/joints on both ends to be pretty much at the same angle.

If you don't ever plan to run 4x4 on the street: just get the driveshaft not to bind. Even if it doesn't bind sitting on flat ground, you want to make sure that the driveshaft won't bind when the driver's side wheel droops as well. That would do you no good at all.

Having a high pinion front axle, my front driveline angle is very flat, so I'm trying to figure it out but pictures will always help!
Old 07-13-2009, 06:32 PM   #58
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

its 5 degrees positive castor, it was 15 degrees. and ill grab some pictures later on.
its not binding at the pinion its binding at the t-case.
Old 07-13-2009, 06:39 PM   #59
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by bouchee2007
its 5 degrees positive castor, it was 15 degrees. and ill grab some pictures later on.
its not binding at the pinion its binding at the t-case.
Sounds like a CV shaft will be in order. I'll wait for the pictures, but you might could grab a used Jeep CV driveshaft and take it to a shop to be modified.
Old 07-13-2009, 06:44 PM   #60
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion





ok thats the pinion angle with a positive 5 degrees castor. ans as you can see the drive shaft comming from the t-case is at its lowest point before it binds. would a high angle driveline work with this?
Old 07-13-2009, 06:56 PM   #61
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

It appears as though your leaf springs aren't flat on the perches. Is that an illusion?

I'm sure a high angle driveshaft would work, just think about the rear shafts on Jeeps. The CV allows the clearance but then the shaft will be shortened and you have to be sure that the lower yoke then won't bind.

I would try to find a cheap route, like trying out a Jeep CV first, though. If I were going to have to dish out big money for a new shaft, I would probably opt on getting a different axle set that has a high pinion front, as it may be cheaper to go that route once you sold your axles.

Try and get that rear mocked up to find out what your actual angles will be. The truck leaning back so much probably doesn't display the real situation as much as you'd want it to in order to know what's going on.
Old 07-13-2009, 07:22 PM   #62
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

no thats not an illusion, its a half assed way of setting the castor and seeting if hte pinion angle would work, i didnt want to hack up my perches if it wasnt going to work. so for the purpose of my measurements thats what i did.
Old 07-13-2009, 07:26 PM   #63
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

if anything i would go for the option of a cv joint. as long as its a viable option. and how much would i be looking at for a high angle drive line? any ideas?
Old 07-13-2009, 09:56 PM   #64
Registered User
 
BigBoy70's Avatar
 
Age: 23
Join Date: Dec 2008
Posts: 186
Location: Heart of Dixie
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by MTchevyS10
Either way, with the amount he would have to move the pinion and re-weld the perches, his steering links would be facing the ground, which means his turning ability is going to be a disaster. The whole point of the steering setup is to not have to turn the portion of the tire that has the weight of the vehicle on it, a.k.a. the bottom of the tire.

Regardless of if he drove it much on the road or not, this wouldn't last long I don't think.

The idea is not to rotate it TOO much. Full hydrolic steering always helps if you have to move the perches......thats what I did at least.

Old 07-13-2009, 10:07 PM   #65
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

if it comes to that situation, 2 questions. how easy is it to go to full hydraulic steering, and is it street legal?
Old 07-13-2009, 10:12 PM   #66
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

nvm it cant be street legal
Old 07-13-2009, 11:46 PM   #67
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by bouchee2007
if it comes to that situation, 2 questions. how easy is it to go to full hydraulic steering, and is it street legal?
You don't need it, don't worry.
Old 07-14-2009, 02:44 AM   #68
Slightly Over Built
 
DieselS10's Avatar
 
Age: 35
Join Date: Dec 2007
Posts: 2,225
Location: Chelsea, OK
User is: OffLine
Re: 91 s10 4wd sas conversion

I have a high angle drive shaft in the front of mine with a CV at the transfer case. My truck will get stupid tall when the bags are maxed, which simulates tire droop during articulation, which is something that you MUST keep in mind or it WILL bind and break. Even with a HP60 and stacked transfer cases I had to get liberal with a die grinder on the front yokes to keep it from binding at full tilt, but the CV is handling it fine.

The bad......the driveshaft was almost $500, but it works.
Old 07-14-2009, 09:46 AM   #69
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

well i figured im already intto the project so what more money, if i didnt want to spend the cash i wouldnt have started this truck, alls i wanted to hear was that i wasnt out of luck and that this was still doable. thanks for the info ill keep it posted with how things go
Old 07-14-2009, 01:03 PM   #70
Registered User
 
BigBoy70's Avatar
 
Age: 23
Join Date: Dec 2008
Posts: 186
Location: Heart of Dixie
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by bouchee2007
nvm it cant be street legal

sure it is...... it just doesn't have a return to center. Dump trucks use it along with other heavy trucks that are on the road. Just takes some getting used to.
Old 07-14-2009, 01:35 PM   #71
Registered User
 
Join Date: Jan 2009
Posts: 572
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

full hydro steering is not legal on our trucks. It is not DOT approved for anythin under 10 ton i believe.
Old 07-14-2009, 02:49 PM   #72
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by BillaksBlazer
full hydro steering is not legal on our trucks. It is not DOT approved for anythin under 10 ton i believe.
Sounds about right. I think Ram Assist, etc. may be about as far as you can legally go, but I'm not positive.
Old 07-15-2009, 02:34 AM   #73
Registered User
 
Join Date: Nov 2008
Posts: 54
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

with full hydro steering you would also need a aux electric pump because if for some reason at highway speeds your motor dies there is no longer a mechanical link to turn the wheels. at least that what all heavy equipment has for emergencies. i think that is the main reason it is not legal.
Old 07-15-2009, 11:41 AM   #74
Registered User
 
BigBoy70's Avatar
 
Age: 23
Join Date: Dec 2008
Posts: 186
Location: Heart of Dixie
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by BillaksBlazer
full hydro steering is not legal on our trucks. It is not DOT approved for anythin under 10 ton i believe.


But.....

I guess it depends on where you live. AL DOT has no stipulations concerning a light duty veichle's steering setup. Not onlt that all you need to get a tag in this state is a title and cash, no inspections. I guess we here in Alabama are just archaic
Old 07-16-2009, 12:08 AM   #75
Registered User
 
BuzzerPB's Avatar
 
Age: 34
Join Date: Apr 2009
Posts: 197
Location: Milwaukie, Or
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by bouchee2007




ok thats the pinion angle with a positive 5 degrees castor. ans as you can see the drive shaft comming from the t-case is at its lowest point before it binds. would a high angle driveline work with this?

looking like your haveing the same problems i had with a LP axle.
I ended up cutting the knuckles and turning them and had 2 use shims as well,
on the T-case side i ended up using a TomWoods 1310 offset u-joint with a tad bit of grinding at full drop
and a 1310/1330 front u-joint to the D44
my build tread with alot of pics
including the t-case cross member..you'll have to redo
http://www.s10forum.com/forum/f221/93-jimmyd-397741/
Old 07-18-2009, 09:23 PM   #76
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

got the rear axle strightened out


Old 07-19-2009, 01:49 PM   #77
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

Nice! Looks like a really good stance. How does the front situation look now that the truck is more level?
Old 07-19-2009, 09:58 PM   #78
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

still having problems with the driveshaft binding at the t-case, but from what ive heard nothing throwing money at a high angle driveline wont fix. and on a side note the rear driveshaft is finished, cut it down to size and milled up an adaptor for a different yoke. i stole the front yoke which is not apart of the rear. ill have pictures up by tomorrow
Old 07-19-2009, 10:16 PM   #79
Slightly Over Built
 
DieselS10's Avatar
 
Age: 35
Join Date: Dec 2007
Posts: 2,225
Location: Chelsea, OK
User is: OffLine
Re: 91 s10 4wd sas conversion

Lookin Good!
Old 07-19-2009, 10:22 PM   #80
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

thanks, its almost finished, just need to install the brake system and hook up the shift linkage and it should move on its own, hopefully.
Old 07-20-2009, 10:38 PM   #81
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

noob question, when you fill the trans are there gallys that transfere the fluid to the TC and the t-case, and if so do you just run the engine while you feed it trans fluid?
Old 07-20-2009, 10:48 PM   #82
Registered User
 
Baggey22's Avatar
 
Age: 23
Join Date: Jan 2007
Posts: 2,086
Location: Johnson, Vermont
User is: OffLine
Re: 91 s10 4wd sas conversion

Transmission and transfer case are separate. They don't share fluid
Old 07-20-2009, 10:55 PM   #83
Slightly Over Built
 
DieselS10's Avatar
 
Age: 35
Join Date: Dec 2007
Posts: 2,225
Location: Chelsea, OK
User is: OffLine
Re: 91 s10 4wd sas conversion

The TC will fill with the tranny. There are two plugs in the rear of the Tcase, one about half way up and one at the bottom, fill it until it begins to run out of the upper one.
Old 07-20-2009, 10:56 PM   #84
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

does the t-case just use tranny fluid or does it take gear oil
Old 07-21-2009, 12:06 PM   #85
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by bouchee2007
does the t-case just use tranny fluid or does it take gear oil
According to a GM dealership, it takes ATF/Dexron VII.
And yes, there are 2 different sets of fill/drain plugs for the transmission and the transfer case.
Old 07-21-2009, 01:26 PM   #86
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

couldi just use dexron III
Old 07-21-2009, 04:16 PM   #87
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

alright guys i need some help on this one, i just dropped my tranny pan and changed the filter. there was a crap load of sludge stuck to the magnet in the pan and a few chunks of metal just sitting there, probably 1/8in in size. what could have possibly broken, any suggestions? and worst case senario, how hard is it to rebuild a tranny or how much does it cost for a new/rebuilt one
Old 07-21-2009, 04:28 PM   #88
Registered User
 
MTchevyS10's Avatar
 
Join Date: Jan 2008
Posts: 712
Location:
User is: OffLine
Re: 91 s10 4wd sas conversion

I say if it drives fine, keep driving it. Could not be a big issue. Just don't go rebuild it before it's officially "done."
Old 07-21-2009, 04:39 PM   #89
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

sounds good to me
Old 07-22-2009, 12:24 AM   #90
Slightly Over Built
 
DieselS10's Avatar
 
Age: 35
Join Date: Dec 2007
Posts: 2,225
Location: Chelsea, OK
User is: OffLine
Re: 91 s10 4wd sas conversion

Yeah, an automatic will let you know when they are finished.
Old 07-22-2009, 08:39 AM   #91
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

as long as i have one forward gear ill be in good shape, reverse is over rated
Old 07-22-2009, 10:40 AM   #92
Registered User
 
96superflow's Avatar
 
Age: 21
Join Date: Jun 2008
Posts: 722
Location: Moyock/Greenville, NC
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by bouchee2007
as long as i have one forward gear ill be in good shape, reverse is over rated
Unless you get in a bind and like having to get out of your truck and push it back
Old 07-22-2009, 11:16 AM   #93
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

lol thats what your spotters for
Old 07-22-2009, 02:07 PM   #94
Registered User
 
96superflow's Avatar
 
Age: 21
Join Date: Jun 2008
Posts: 722
Location: Moyock/Greenville, NC
User is: OffLine
Re: 91 s10 4wd sas conversion

a good one deff helps ha
Old 07-22-2009, 11:56 PM   #95
Slightly Over Built
 
DieselS10's Avatar
 
Age: 35
Join Date: Dec 2007
Posts: 2,225
Location: Chelsea, OK
User is: OffLine
Re: 91 s10 4wd sas conversion

Quote: Originally Posted by 96superflow
Unless you get in a bind and like having to get out of your truck and push it back
Been there! I drove mine for 6 lonths with out reverse back in the early 90's.
Old 07-24-2009, 12:29 AM   #96
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

well filled everything up today, and got a half assed rear brake line set up and pluged the front so i can get it out of the garage. i havent had hte chance to move it yet so hopefully the tranny works. so heres a question for all of you, since im new to the whole 4wd thing what locker would be best for the rear dana 44? im looking for something manual?
Old 07-24-2009, 12:53 AM   #97
Slightly Over Built
 
DieselS10's Avatar
 
Age: 35
Join Date: Dec 2007
Posts: 2,225
Location: Chelsea, OK
User is: OffLine
Re: 91 s10 4wd sas conversion

I've had good luck with Lock-Right lockers and they are cheap, PM Joey.
Old 07-24-2009, 09:18 AM   #98
local engineer
 
bouchee2007's Avatar
 
Age: 20
Join Date: Mar 2009
Posts: 204
Location: Berkley Mass
User is: OffLine
Re: 91 s10 4wd sas conversion

how do yo remove the doors on these trucks? i have a lot of rust thast needs to be cut out and the driver side door is in the way, it dosent really look like there is an easy way, other than cuttng the pins and then replacing them with new ones? is there any other way?
Old 07-24-2009, 10:11 AM   #99
Registered User
 
96superflow's Avatar
 
Age: 21
Join Date: Jun 2008
Posts: 722
Location: Moyock/Greenville, NC
User is: OffLine
Re: 91 s10 4wd sas conversion

A very long 1/2 drive extension and a BFH. Knock the hinge pins out, 1 from the top, the other from the bottom. and it slides out. I would however go and get 2 more hinge pins, because its likely you will bust the bushings pulling the other two out.
Old 07-24-2009, 11:00 AM   #100
Truck #121616
 
Golana's Avatar
 
Age: 23
Join Date: Jan 2007
Posts: 2,800
Location: High River, Alberta
User is: OffLine
Re: 91 s10 4wd sas conversion

there are little clips that fit over the pins. you remove the clips (should be near the head of the pin) and then the pin should punch out fairly easy



Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump


All times are GMT -4. The time now is 08:28 PM.

Powered by vBulletin® Copyright ©2000 - 2009, Jelsoft Enterprises Ltd. SEO by vBSEO 3.2.0
SEO by vBSEO
vBulletin Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
Page generated in 0.66691 seconds with 32 queries
[Output: 214.47 Kb. compressed to 195.65 Kb. by saving 18.82 Kb. (8.78%)]