Rear diff options...real LSD's...

Lets talk clutches and everything drivetrain related

Postby CMS-GT4 » Tue Aug 19, 2008 4:30 pm

I can't remember the specs. I know they are on the forum. But, the front bar is supposed to be larger for 92-93.

You might find one from a car being parted out on one of these forums for cheap.

I can't remember the price but I think whiteline charged in the 150-170usd range to make the custom rear bar last time I asked. There is a st205 member who had a custom front bar made, but I think it was from a different company.

BTW, are you running a solid diff mount? I am curious how much flex the oem mount produces under racing conditions.

I still wonder how much caster could affect rear inside lift. Thats an expensive mod though. In the $400-500 range for the caster/camber plate.
Members don't see the above ad. Register now - it's free!
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
User avatar
CMS-GT4
GTSilver Member
 
Posts: 10345
Images: 7
Joined: Mon Aug 09, 2004 9:12 pm
Location: St Louis Area (IL)

1992 Toyota Celica

Postby gtfour77 » Tue Aug 19, 2008 4:57 pm

CMS-GT4 wrote:BTW, are you running a solid diff mount? I am curious how much flex the oem mount produces under racing conditions.

I still wonder how much caster could affect rear inside lift. Thats an expensive mod though. In the $400-500 range for the caster/camber plate.


Yup, still on the stock rear diff mount..no problems at all... I actually prefer it for the 2-step take offs, it's not as harsh on the gear set and axles... but I could be completelly wrong... :shrug:

Caster will affect mostly turn in only AFAIK... I am runnign cusco front camber plates and stock rears which will get replaced witha solid mounts soon... Thanks again for the front bar info, I will definitelly change it for the 2009 season...
Martin V.
Toyota Celica Alltrac 561 SM
Toyota MR2 Turbo 35 SSM
[IMG]http://farm2.static.flickr.com/1201/4724980930_bae7a66436_m.jpg[/IMG][IMG]http://farm2.static.flickr.com/1405/4732468717_5fa2397872.jpg[/IMG][IMG] http://farm2.static.flickr.com/1068/4733097366_b4da49c0eb.jpg[/IMG]
User avatar
gtfour77
Established Member
 
Posts: 1075
Joined: Fri Aug 13, 2004 2:50 pm
Location: WV USA

Postby lumbercis » Tue Aug 19, 2008 10:02 pm

Wow, if the half shafts are an additional $300, then there really isn't much reason not to go with the Cusco.

OT: Marteen, do you have any sponsors other than the TRD contingency? You do so much R&D for us I feel like we should sponsor you. Of course we are all broke... :wink: Have you approached any of the mr2oc vendors? Might help with engine stuff at least.

J.
Caldina powered...
Image
lumbercis
Gold Member
 
Posts: 2346
Joined: Fri May 13, 2005 4:52 am
Location: Washington, D.C.

Postby CMS-GT4 » Tue Aug 19, 2008 10:05 pm

lumbercis wrote:Wow, if the half shafts are an additional $300, then there really isn't much reason not to go with the Cusco.


Unless they already have a torsen that is.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
User avatar
CMS-GT4
GTSilver Member
 
Posts: 10345
Images: 7
Joined: Mon Aug 09, 2004 9:12 pm
Location: St Louis Area (IL)

1992 Toyota Celica

Postby gtfour77 » Tue Aug 19, 2008 10:50 pm

lumbercis wrote:Wow, if the half shafts are an additional $300, then there really isn't much reason not to go with the Cusco.

OT: Marteen, do you have any sponsors other than the TRD contingency? You do so much R&D for us I feel like we should sponsor you. Of course we are all broke... :wink: Have you approached any of the mr2oc vendors? Might help with engine stuff at least.
J.


Yes, it's really worth it if you have an open diff...

As far as sponsors, I have all of the basic contingencies through SCCA (TRD, Hoosier, Hawk) Next year I'll be concentrating on Pro Solo since it's almost $1000 worth of stuff for each win. (2 free Hoosier tires, $200 from TRD and $100 from Hawk) I'd like to win a few more before talking to more sponsors...
Martin V.
Toyota Celica Alltrac 561 SM
Toyota MR2 Turbo 35 SSM
[IMG]http://farm2.static.flickr.com/1201/4724980930_bae7a66436_m.jpg[/IMG][IMG]http://farm2.static.flickr.com/1405/4732468717_5fa2397872.jpg[/IMG][IMG] http://farm2.static.flickr.com/1068/4733097366_b4da49c0eb.jpg[/IMG]
User avatar
gtfour77
Established Member
 
Posts: 1075
Joined: Fri Aug 13, 2004 2:50 pm
Location: WV USA

Postby aus jd 2703 » Thu Aug 21, 2008 9:51 am

i know u guys are talking bout the lsd but what u think of these:
http://translate.google.com.au/translat ... m%26sa%3DG
aus jd 2703
Established Member
 
Posts: 1089
Joined: Wed Apr 30, 2008 12:02 am

Postby gtfour77 » Thu Aug 21, 2008 11:54 am

aus jd 2703 wrote:i know u guys are talking bout the lsd but what u think of these:
http://translate.google.com.au/translat ... m%26sa%3DG


Can you elaborate? All I see is a racing site, not a specific product or car... :shrug:
Martin V.
Toyota Celica Alltrac 561 SM
Toyota MR2 Turbo 35 SSM
[IMG]http://farm2.static.flickr.com/1201/4724980930_bae7a66436_m.jpg[/IMG][IMG]http://farm2.static.flickr.com/1405/4732468717_5fa2397872.jpg[/IMG][IMG] http://farm2.static.flickr.com/1068/4733097366_b4da49c0eb.jpg[/IMG]
User avatar
gtfour77
Established Member
 
Posts: 1075
Joined: Fri Aug 13, 2004 2:50 pm
Location: WV USA

Postby gtfour77 » Thu Aug 21, 2008 5:47 pm

Ok, here is a comparison for those interested. It's not the best video but it's the only one I had from the last event.... As you can see the car is getting out of corners much faster without much slipping...and the little bit that it has will be eliminated by reducing friction modifier amount in the diff fluid...next event is at BeaveRun on the 31st so we'll what it has with the newly tuned diff , higher rate springs and good tires... :D

http://www.youtube.com/watch?v=ofjuBCgPU9w
Martin V.
Toyota Celica Alltrac 561 SM
Toyota MR2 Turbo 35 SSM
[IMG]http://farm2.static.flickr.com/1201/4724980930_bae7a66436_m.jpg[/IMG][IMG]http://farm2.static.flickr.com/1405/4732468717_5fa2397872.jpg[/IMG][IMG] http://farm2.static.flickr.com/1068/4733097366_b4da49c0eb.jpg[/IMG]
User avatar
gtfour77
Established Member
 
Posts: 1075
Joined: Fri Aug 13, 2004 2:50 pm
Location: WV USA

Postby CMS-GT4 » Thu Aug 21, 2008 6:12 pm

It looks like that rear end just rotates around now and you burn less rubber.

How the rotation of the car feel now? More throttle modulated? Does the rear have more grip now too?
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
User avatar
CMS-GT4
GTSilver Member
 
Posts: 10345
Images: 7
Joined: Mon Aug 09, 2004 9:12 pm
Location: St Louis Area (IL)

1992 Toyota Celica

Postby gtfour77 » Thu Aug 21, 2008 6:25 pm

For this past event the diff was set on "soft" with more friction modifier than needed... it felt really good with minimal change in driving besides the fact that the inside rear didn't spin as much and the car went forward a lot quicker than before. I am getting ready to change the fluid and will use lot less FM so I am sure the feel will change some but not expecting much of a difference...
You can sort of rotate the car around a corner with throttle pretty easily and it's very predictable. I was looking at some of my older videos and I am 100% sure I can make up a lot of time by getting on gas earlier without "waiting" for the car to settle and the open/torsen diff to catch up... It just wasn't fun to have the power/grip and not be able to use it....just plain frustrating to be honest. (some of the longer speepers can feel like an eternity with an open/torsen diff...heh)
Martin V.
Toyota Celica Alltrac 561 SM
Toyota MR2 Turbo 35 SSM
[IMG]http://farm2.static.flickr.com/1201/4724980930_bae7a66436_m.jpg[/IMG][IMG]http://farm2.static.flickr.com/1405/4732468717_5fa2397872.jpg[/IMG][IMG] http://farm2.static.flickr.com/1068/4733097366_b4da49c0eb.jpg[/IMG]
User avatar
gtfour77
Established Member
 
Posts: 1075
Joined: Fri Aug 13, 2004 2:50 pm
Location: WV USA

Postby aus jd 2703 » Thu Aug 21, 2008 11:20 pm

look under driving parts and diff cushion
aus jd 2703
Established Member
 
Posts: 1089
Joined: Wed Apr 30, 2008 12:02 am

Postby gtfour77 » Fri Aug 22, 2008 11:41 am

aus jd 2703 wrote:look under driving parts and diff cushion


Oh ok, looks really nice. How much is 15,000 yen in dollars, anyone know? I am afraid of the conversions nowadays since dollar is so weak. Hopefully something good happens to our economy soon....
Martin V.
Toyota Celica Alltrac 561 SM
Toyota MR2 Turbo 35 SSM
[IMG]http://farm2.static.flickr.com/1201/4724980930_bae7a66436_m.jpg[/IMG][IMG]http://farm2.static.flickr.com/1405/4732468717_5fa2397872.jpg[/IMG][IMG] http://farm2.static.flickr.com/1068/4733097366_b4da49c0eb.jpg[/IMG]
User avatar
gtfour77
Established Member
 
Posts: 1075
Joined: Fri Aug 13, 2004 2:50 pm
Location: WV USA

Postby CMS-GT4 » Fri Aug 22, 2008 4:00 pm

~140usd. Marios' solid mount costs about that much, and you can place your order in english. At least it used to. I am not sure what he charges now.

As for the rear keeping up. I felt like the rear solid mount helped. There was a slight bit of slack in he rear, and when I went to the solid mount and stiff rear springs the car launched harder and the rear felt like it was doing more work.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
User avatar
CMS-GT4
GTSilver Member
 
Posts: 10345
Images: 7
Joined: Mon Aug 09, 2004 9:12 pm
Location: St Louis Area (IL)

1992 Toyota Celica

Postby gtfour77 » Fri Aug 22, 2008 4:34 pm

CMS-GT4 wrote:~140usd. Marios' solid mount costs about that much, and you can place your order in english. At least it used to. I am not sure what he charges now.

As for the rear keeping up. I felt like the rear solid mount helped. There was a slight bit of slack in he rear, and when I went to the solid mount and stiff rear springs the car launched harder and the rear felt like it was doing more work.



Thanks for the info, I might give it a try by welding the sides of the mount...easier and cheaper than $140... I am just afraid it'll be too stiff and put too much stress on the diff...hmmm Might give the welding option a try and if it doesn't feel right I can always grind the welds off... :)
Martin V.
Toyota Celica Alltrac 561 SM
Toyota MR2 Turbo 35 SSM
[IMG]http://farm2.static.flickr.com/1201/4724980930_bae7a66436_m.jpg[/IMG][IMG]http://farm2.static.flickr.com/1405/4732468717_5fa2397872.jpg[/IMG][IMG] http://farm2.static.flickr.com/1068/4733097366_b4da49c0eb.jpg[/IMG]
User avatar
gtfour77
Established Member
 
Posts: 1075
Joined: Fri Aug 13, 2004 2:50 pm
Location: WV USA

Postby CMS-GT4 » Fri Aug 22, 2008 5:05 pm

I am not sure if we are talking about the same part. I do not think welding will help. The issue is The mount is rubber and tears. I am surprised yours is still intact since they normally tear under regular driving. Its the cushion behind the diff with a rubber center that has a plate in the middle that bolts to the diff.

The cheapest solution is to take the mount, if the rubber is not torn, and fill it with poly. It becomes solid, but its still a little more flexible than solid metal.

They used to offer rear poly mounts in the 90s for the gtfours. But the simpler way is just to pour it yourself like they do when they make DIY sold motor mounts.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
User avatar
CMS-GT4
GTSilver Member
 
Posts: 10345
Images: 7
Joined: Mon Aug 09, 2004 9:12 pm
Location: St Louis Area (IL)

1992 Toyota Celica

PreviousNext

Return to Drivetrain Central

Who is online

Users browsing this forum: No registered users and 1 guest