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Definitely do the LS 5th gear (.714) with the 4.9 FD - as you said, 5th is not a hard acceleration gear so the large step from 4th won't be an issue. I've got a few sets on back order out of Japan at the moment, ETA of around a week. PM if interested.
Orders of LS 5ths? Interesting
Depends if you track your car or not, both tracks I race on I get well into 5th (7000~rpm) so the longer gear would pull my speeds back with the loss of rpm into 5th. How would an itr 4.7 5th compare to the one you're looking at now? If you're making any trips to qld before you put it in ill take you for a drive (small chance but offer is there)
Thanks for the offer mate. Would love to find myself in QLD randomly but I don't think I will haha.
ITR 5th is 0.787 supposedly and B16A is 0.870 so maybe it'd cruise at 100km doing roughly 3,600-3,700 with that gear.
To be honest I think with the modifications I've done I should be able to accelerate enough in 5th even if I lengthen it. The 4.9 and lightweight flywheel to come, as well as the tune down the track for the head build, should give me enough to work with. But like I said, not planning on accelerating much in 5th.
Anyway the engine revs out to 9,000 so it gives me an extra 500 odd rpm to push into 5th with
Google mfactory gear calculator if you haven't used it already btw :)
Yeah that's what I'm going off so far
Wow u have been busy Andy didn't know it had that much work.Quote:
Originally Posted by dougie_504
which b16a box, they're different.
have y1 cable box mated to b18c type r motor.
4000rpm @ 100km/h
4500rpm @ 120km/h
4.4 diff
b16a S1 cable
1 - 3.32
2 - 2.10
3 - 1.46
4 - 1.10
5 - 0.84
FD - 4.4
b16a Y1 cable
1 - 3.15
2 - 2.05
3 - 1.42
4 - 1.10
5 - 0.87
FD - 4.266
The Y1 with stock FD is similar to dc2r highway speed/rpm
with the 4.4 its heaps higher.
Pretty sure Y1 mate