S5 Or S4 Block
08-03-06, 02:37 PM
#1
Senior Member
Thread Starter
Join Date: Jun 2006
Location: Connecticut
Posts: 315
Likes: 0
Received 0 Likes
on
0 Posts
S5 Or S4 Block
I did some searching and found that the s5 na block has 1/2 lbs lighter rotors and slightly higher compression than the s4 na. My question is, with the same carb setup that was on my s4 being put on the s5 block give a noticible difference in power? Will I lose torque at all from not having the heavier rotors? Or is there no in the seat difference at all? higher redline? quicker acceleration? I know that most the power on the s5 was from the difference in intake manifold runners (VDI) but I like my Mikuni carb and will just be swapping it on.
Thanks guys
Thanks guys
08-03-06, 05:06 PM
#2
well, you'll get a higher redline and *may* have (or want) to adjust the jetting in your carb after the swap.
I would say you can expect more from the S5, even without the VDI, simply due to the higher compression and lighter rotating assembly. But I dunno how much.
I would say you can expect more from the S5, even without the VDI, simply due to the higher compression and lighter rotating assembly. But I dunno how much.
08-03-06, 05:50 PM
#3
Senior Member
Thread Starter
Join Date: Jun 2006
Location: Connecticut
Posts: 315
Likes: 0
Received 0 Likes
on
0 Posts
well I just found out that the motor was in a car with an auto tran. so now I need a s5 flywheel, the s4 flywheel is the wrong wieght and will ruin the bearings. Do I also need a counterweight?
08-03-06, 06:21 PM
#5
Senior Member
Thread Starter
Join Date: Jun 2006
Location: Connecticut
Posts: 315
Likes: 0
Received 0 Likes
on
0 Posts
alright so the front weight doesnt have to be changed I just have to either get a stock s5 flywheel or a light flywheel that would require the weight from the auto flexplate thanks alot for your help. now to find a flywheel for cheap
Thread
Thread Starter
Forum
Replies
Last Post