4g61t.org

Specializing in the 3g CSM
It is currently Fri Mar 29, 2024 1:54 am

All times are UTC-05:00




Post new topic  Reply to topic  [ 10 posts ] 
Author Message
PostPosted: Thu Jan 30, 2014 6:23 pm 
Offline
Spends Too Much Time Under The Hood
User avatar

Joined: Wed Dec 20, 2006 11:53 am
Posts: 360
Location: Duluth, MN
I am looking into the option of this. Done quite a bit of research only to come up with mixed info everywhere. My question is if anyone here has done this or is running this? If so the AWD trans has to have the center diff welded, and you can have the VC removed and the output shaft out as well. Does the welded center diff make it more difficult to drive in FWD mode? or would that only affect the cars that are still AWD? would it be worth it to put a quaife lsd in the trans? Thanks for the info!


Top
   
PostPosted: Thu Jan 30, 2014 6:49 pm 
Offline
Moderator
User avatar

Joined: Wed Jan 04, 2006 1:21 pm
Posts: 2141
Location: Tucson Az
im running a auto awd trans with welded center diff for my fwd car.. I havent had any issues at all.. and didnt notice any difference between it and the fwd trans that was in it before... only time u will notice it is when u go awd..tires will chirp when making sharp turns...but thats only when u go awd..

and I left the shaft in.. just make sure it has the clip on it to keep it in place.



Steve

_________________
Steve 89 colt 2.3 stroker stock top end. evo3@20 psi 13.489@99.30mph 3/10 2012
On drag radials.auto trans.launching @ 5 psi and no traction thru 2nd.


Top
   
PostPosted: Thu Jan 30, 2014 6:51 pm 
Offline
2nd Banana
User avatar

Joined: Wed Dec 28, 2005 1:16 pm
Posts: 9369
Location: San Diego, CA.
Quote:
I am looking into the option of this. Done quite a bit of research only to come up with mixed info everywhere. My question is if anyone here has done this or is running this? If so the AWD trans has to have the center diff welded, and you can have the VC removed and the output shaft out as well. Does the welded center diff make it more difficult to drive in FWD mode? or would that only affect the cars that are still AWD? would it be worth it to put a quaife lsd in the trans? Thanks for the info!
I have ran my AWD trans in FWD mode using a VC eliminator. It seriously sucks. You haven't experienced wheelspin until you've tried this. The shorter final-drive ratio in the AWD trans makes it a lot worse, but if your car isn't making a ton of power it could make it more fun.

To answer your questions though:

You would have to either weld the center diff, install a spool, or use a VC eliminator. It doesn't make the car more difficult to drive; because the front diff isn't effected, you just get more wheelspin because of the shorter final-drive ratio.

As far as a Quaife goes, you'll just spin both tires instead of one, but it would definitely improve handling. My car has a Quaife front diff, and I was getting 3rd-gear wheelspin at half throttle once it came up on boost, and torque-steer definitely still exists with an LSD and equal-length half shafts. Granted, my car was at 511whp with this setup.

Hope that helps.

_________________
91 GSX - 511fwhp and 352 lb/ft 25psi 110 octane, 7.68 @ 95.9mph 1/8th 21psi 91 octane, 11.93 @ 112.9mph, 117.7mph best trap speed, 20psi 91 octane
98 Volvo S70 T5 - DD

http://www.facebook.com/captaintonus


Top
   
PostPosted: Thu Jan 30, 2014 7:37 pm 
Offline
Some call me a god
User avatar

Joined: Fri Aug 15, 2008 2:19 am
Posts: 1629
Location: Tonawanda, NY
I have a TRE spool that I'm not using if you prefer to go that route. I used it for a summer to run my W5M33 in FWD mode, but removed it and put my center diff back in a few months after I got my AWD conversion finished.

_________________
"A good day racing is better than a great day fishing!"


Top
   
PostPosted: Thu Jan 30, 2014 11:59 pm 
Offline
Spends Too Much Time Under The Hood
User avatar

Joined: Wed Dec 20, 2006 11:53 am
Posts: 360
Location: Duluth, MN
Thanks for all the info! That is the answers that I am looking for. I have 2 options right now.
1. Rebuild my FWD tranny myself and hope the intermediate shaft lines up correctly without binding again.
2. Pick up the shep stage 4 AWD tranny and just use it fwd. The inter shaft should line up with this for sure.

I guess first I need the moneys!

Thanks again for clearing that up!


Top
   
PostPosted: Fri Jan 31, 2014 8:52 pm 
Offline
The Silent Administrator
User avatar

Joined: Wed Dec 24, 2003 3:32 pm
Posts: 9524
Location: Ottawa, ON, Canada
I was just over at HPAuto who are pretty local to me, but over on the Quebec side. 1lowcolt runs the shop, and had some advice for me; he never broke a transmission while he was running modified Colts. He had an AWD trans with a VC/lock to operate in front drive mode. He also loved the EVO3 5th gear upgrade to drop the RPM on the highway. He's owned well over 10 Colts and the last one I remember was caged and 600+ HP with a half cemented block. Got some advice on how to get my Quaife installed. 8)


Top
   
PostPosted: Fri Jan 31, 2014 9:19 pm 
Offline
Spends Too Much Time Under The Hood
User avatar

Joined: Wed Dec 20, 2006 11:53 am
Posts: 360
Location: Duluth, MN
Nice! That is kinda the route that I am thinking I will be going. I want it to be fun to drive, not tons of HP, but still be able to cruise in it. What clutch combo are you using? I am thinking I might try to find a stock flywheel for the AWD and I have heard some good things about the southbend clutch setups.
Biggest issue will be trying to convince the wife that I need to spend the money on it! :)


Top
   
PostPosted: Fri Jan 31, 2014 10:50 pm 
Offline
The Silent Administrator
User avatar

Joined: Wed Dec 24, 2003 3:32 pm
Posts: 9524
Location: Ottawa, ON, Canada
Check out my members thread: http://www.4g61t.org/forum/viewtopic.php?f=9&t=12968

I list all the clutch and flywheel parts there.
Installed to a stock type KM210 FWD trans, but will now be going inside an F5M33 FWD DSM trans with a Quaife.

Essentially the new ACT2100 with an 8.2lb aluminum flywheel.

Hindsight, I would like to install an SFI approved harmonic dampener pulley (ATI/Fluidamper) or go and possibly go back to a stock weight flywheel setup.
Adding weight to the 8.2lb flywheel and rotating mass, or ditching the flywheel and getting the heavier flywheel.

Heavy flywheel and balance shafts (read this article by Jack's Transmission on keeping Balance Shafts for improved transmission life and high RPM shifting http://www.jackstransmissions.com/pages ... nce-shafts) can help keep your transmission from making crazing noises on accel/decel, as well as help stabilize idle due to crank wip effect.
Things will last a lot longer, with fewer noises.

I love the speed at which you can shift when racing around, with a lightweight flywheel and even using a full face clutch, but would like a softer pedal (for the forces applied to the crank thrust bearing!) and might not notice shifting issues with a heavier flywheel.


Top
   
PostPosted: Sat Feb 08, 2014 10:29 pm 
Offline
Member

Joined: Wed Jul 28, 2004 7:18 am
Posts: 42
Location: PA
Quote:
Check out my members thread: http://www.4g61t.org/forum/viewtopic.php?f=9&t=12968

I list all the clutch and flywheel parts there.
Installed to a stock type KM210 FWD trans, but will now be going inside an F5M33 FWD DSM trans with a Quaife.

Essentially the new ACT2100 with an 8.2lb aluminum flywheel.

Hindsight, I would like to install an SFI approved harmonic dampener pulley (ATI/Fluidamper) or go and possibly go back to a stock weight flywheel setup.
Adding weight to the 8.2lb flywheel and rotating mass, or ditching the flywheel and getting the heavier flywheel.

Heavy flywheel and balance shafts (read this article by Jack's Transmission on keeping Balance Shafts for improved transmission life and high RPM shifting http://www.jackstransmissions.com/pages ... nce-shafts) can help keep your transmission from making crazing noises on accel/decel, as well as help stabilize idle due to crank wip effect.
Things will last a lot longer, with fewer noises.

I love the speed at which you can shift when racing around, with a lightweight flywheel and even using a full face clutch, but would like a softer pedal (for the forces applied to the crank thrust bearing!) and might not notice shifting issues with a heavier flywheel.
Jack needs to not write tech articles that show how little he actually knows.

On the AWD trans useage, I currently have on in the swapped C52a I just picked up. The main reason I did this is to avoi using the weak FWD output shaft. I have piles of them from DSM fwd guys who were making power (or too bullheaded to back off if the throttle when they start getting wheel hop).

I just welded both diffs and welded the transfer case output shaft hole closed. I'll probably change the welded front diff back out for an LSD version in the near future as I'm less interested in just driving this car in straight lines.


Top
   
PostPosted: Sat Feb 08, 2014 11:05 pm 
Offline
The Silent Administrator
User avatar

Joined: Wed Dec 24, 2003 3:32 pm
Posts: 9524
Location: Ottawa, ON, Canada
Good to know!

Thanks for posting.


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 10 posts ] 

All times are UTC-05:00


Who is online

Users browsing this forum: No registered users and 39 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Limited