LS2 or 2JZ?
07-31-07, 10:12 PM
#1
Junior Member
Thread Starter
Join Date: Apr 2007
Location: California
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
LS2 or 2JZ?
I just wanted to know what you think would be a better swap a LS2 OR 2JZ in to a FD and why? What are the up's and down's of each motor?
Any input would be good.
Any input would be good.
08-01-07, 02:05 PM
#4
There were no survivors
The 2jz easily has 400+ as well on an unstressed, unrestricted, block. But the bottom line is 2jz parts seem to be worth gold, LSx parts are cheaper by a mile. The 2jz is also a long engine so its going to be a tight fit and extend past the front axles almost guaranteed. The LSx's is shorter and help the car retain balance (but judging from your two engine choices I take it you're more interested in drag? If so balance probably doesn't matter to you)
08-01-07, 02:40 PM
#5
well, balance still affects a drag car. The further forward weight is, the less will be over the drive wheels. All I meant by the unstressed thing was that the LS2 comes stock with 400, the 2jz was more like 320, im not doubting its ability to make that power, but it doesnt come with it
08-01-07, 02:52 PM
#6
Cold Play
iTrader: (1)
Join Date: May 2005
Location: Northern Cali - Sonora
Posts: 767
Likes: 0
Received 0 Likes
on
0 Posts
LS2 - no question about it.
Everyone that has already done a 2JZ swap, has had huge problems with bump steer! If you go 2JZ, it is a straight line car. Nothing else. If you go LS2, you can do anything a stock Rx7 can do, and more. You get twice the reliability, and double the torque! Your only problem is traction!
Everyone that has already done a 2JZ swap, has had huge problems with bump steer! If you go 2JZ, it is a straight line car. Nothing else. If you go LS2, you can do anything a stock Rx7 can do, and more. You get twice the reliability, and double the torque! Your only problem is traction!
08-01-07, 04:06 PM
#7
Junior Member
Thread Starter
Join Date: Apr 2007
Location: California
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
I would like it for drag and a little street fun with it.
I think im going to go for the LS2 swap.
Thanks for the info, it is really helping me decide on what I want.
I think im going to go for the LS2 swap.
Thanks for the info, it is really helping me decide on what I want.
Trending Topics
08-01-07, 04:25 PM
#8
DOWNSTAIRS MIXUP
Join Date: Mar 2003
Location: Lampasas, TX
Posts: 2,723
Likes: 0
Received 0 Likes
on
0 Posts
*Cough20Bcough*
But seriously, I'd go with the LS2 and T56 combo, slap some L92 heads, long tube headers, intake manni on that sucker, and go. That alone would net about a 50-60hp gain over the stock 400hp. Plus, you can always turbo a V8
. STS makes rear mounted turbo kits that are VERY V8 friendly. The turbochargers replace your mufflers.
But seriously, I'd go with the LS2 and T56 combo, slap some L92 heads, long tube headers, intake manni on that sucker, and go. That alone would net about a 50-60hp gain over the stock 400hp. Plus, you can always turbo a V8
. STS makes rear mounted turbo kits that are VERY V8 friendly. The turbochargers replace your mufflers.
I see a lot of rotarys with the same problem.
08-02-07, 09:37 AM
#13
Senior Member
Join Date: Sep 2004
Location: NorCal
Posts: 299
Likes: 0
Received 0 Likes
on
0 Posts
Some one need to make a custom ring and pinion for the FD, like a 3.27 final drive, so people who does the LSx and 2JZ swaps don't have to limit to only a 150-170mph race on the freeway... that is if you want freeway beast. 
08-02-07, 10:17 AM
#14
Super Snuggles
Originally Posted by sao1
Some one need to make a custom ring and pinion for the FD, like a 3.27 final drive, so people who does the LSx and 2JZ swaps don't have to limit to only a 150-170mph race on the freeway.
The stock axles and differential housing are still weak points, so largely thanks to me, there are now several ways to swap an '03-'04 Cobra Mustang IRS into an FD, which offers a wide range of gearing choices, improved strength, and negligible weight gain, all for less than the cost of a custom ring and pinion set.
08-02-07, 10:51 AM
#15
The stock axles and differential housing are still weak points, so largely thanks to me, there are now several ways to swap an '03-'04 Cobra Mustang IRS into an FD, which offers a wide range of gearing choices, improved strength, and negligible weight gain, all for less than the cost of a custom ring and pinion set.
08-02-07, 05:12 PM
#16
Super Snuggles
08-02-07, 08:47 PM
#19
Super Snuggles
One of the first production cradles bent at the notch made for more exhaust clearance, so patches were sent out for the existing cradles and subsequent cradles had no exhaust notch. No one ever "broke" a cradle, although the drifter who bent that one "on the way to the grocery store" definitely tried.
I did, because it wasn't worth the effort. There are now several other people making variations on my original design.
i thought you stopped making them.
08-06-07, 10:25 AM
#22
i wasnt knocking the design or workmanship on the cradle or anything, it looks like a really good piece, and if i went into engineering-mode id have a ton of questions on it and the suspension setup around it, but i've seen a bunch of threads where you mention it and always add at the end "that I helped develop" or some permutation.
08-06-07, 02:23 PM
#23
Super Snuggles
08-06-07, 02:28 PM
#24
Super Snuggles
I did all the research on what was currently available and what could be adapted to the FD's suspension without affecting handling, wheel, or brake choices, paid for all of the R&D, found a manufacturer to make the 300M hybrid axles to my specifications, and made the welding jig to produce copies for others.
