Rear End Upgrade
05-14-2004, 11:36 AM
#2
Senior Member
Join Date: Dec 2001
Location: Panama City Beach, Florida
Posts: 993
you can, but it requires modification... and its only good for drag racing..
the stock FD rear end can handle just about anything you throw at it.. most of the LS1 FD guys go with the cobra rear end... but a friend of mine with Turbo Nitrous LS1 is going with a TII diff.
the stock FD rear end can handle just about anything you throw at it.. most of the LS1 FD guys go with the cobra rear end... but a friend of mine with Turbo Nitrous LS1 is going with a TII diff.
05-14-2004, 11:43 AM
#3
Super Moderator
Join Date: Sep 2002
Location: Savannah, Ga
Posts: 2,763
Originally Posted by twinturborx7pete' date='May 14 2004, 12:36 PM
you can, but it requires modification... and its only good for drag racing..
the stock FD rear end can handle just about anything you throw at it.. most of the LS1 FD guys go with the cobra rear end... but a friend of mine with Turbo Nitrous LS1 is going with a TII diff.
the stock FD rear end can handle just about anything you throw at it.. most of the LS1 FD guys go with the cobra rear end... but a friend of mine with Turbo Nitrous LS1 is going with a TII diff.
But it is nowhere near a bolt in, you have to fab the mounts for the diff, and get custom axles and driveshaft made.
Jimlab from RX7club did it, you can go over there and do a search for his name and youll find the info on it.
05-14-2004, 02:02 PM
#4
Senior Member
Join Date: Dec 2001
Location: Panama City Beach, Florida
Posts: 993
i say its mainly for drag racing because that is why people want to swap it out.. its a stronger IRS setup.. yet its no where near as light or as good as the original FD's setup.. I'm sure the engineers at Mazda have a little bit more working knowledge in physics than us. 
05-15-2004, 05:46 PM
#6
Member
Join Date: Jan 2002
Location: MIssion
Posts: 84
Originally Posted by twinturborx7pete' date='May 14 2004, 01:02 PM
i say its mainly for drag racing because that is why people want to swap it out.. its a stronger IRS setup.. yet its no where near as light or as good as the original FD's setup.. I'm sure the engineers at Mazda have a little bit more working knowledge in physics than us.
05-17-2004, 08:14 PM
#8
Senior Member
Join Date: Dec 2002
Location: Bayou-self Louisiana
Posts: 947
Originally Posted by -=RX-7 KID=-' date='May 16 2004, 02:32 AM
ok so baiscly it's not a good idea, looks like id be better off just bracing the stock FD one and putting a Kazaa LSD in it.
05-22-2004, 01:50 AM
#9
Member
Join Date: Oct 2003
Posts: 50
Originally Posted by twinturborx7pete' date='May 14 2004, 11:02 AM
i say its mainly for drag racing because that is why people want to swap it out.. its a stronger IRS setup.. yet its no where near as light or as good as the original FD's setup.. I'm sure the engineers at Mazda have a little bit more working knowledge in physics than us.
And, while you're on a roll, most people don't want one for drag racing. They want one to retain the handling the car came with while improving strength, decreasing weight a little, and getting a wide range of gear ratios in the bargain.
FD 36 lb. cast iron housing on the left, Cobra 14 lb. aluminum housing on the right.
http://www.rx7club.com/forum/attachment.ph...&postid=1380794
Cobra 8.8" ring and pinion on the left, FD 8.0" (203mm) ring and pinion on the right.
http://www.rx7club.com/forum/attachment.ph...&postid=1391549
FD Torsen on the left, Cobra 8.8" Zexel Torsen on the right.
http://www.rx7club.com/forum/attachment.ph...&postid=1423200
FD on the bottom, Cobra 8.8" on top.
http://www.rx7club.com/forum/attachment.ph...&postid=1423203
Cobra 8.8" differential, cradle, and FD rear subframe.
http://www.rx7club.com/attachment.php?s=&postid=2585932
And one more...
http://www.rx7club.com/attachment.php?s=&postid=2585938
Any questions?