Does anyone know what problem you may come across when fitting a s15 diff on a 14a I’m looking at one on eBay but just wondering if it’s worth the hassle or just upgrade to a Kaaz 1.5way in the 14 casing??
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Does anyone know what problem you may come across when fitting a s15 diff on a 14a I’m looking at one on eBay but just wondering if it’s worth the hassle or just upgrade to a Kaaz 1.5way in the 14 casing??
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It's a straight swap (assuming you're looking at buying a complete diff and not just the pumpkin and half shafts)
Things to look for, assuming your buying the whole s15 diff set.
S14a - with abs system or not? All s15 have abs, s14a some do not have abs, the drive shaft will be longer if not equipped with abs system.
S15 diff - 6 bolt or 5 bolt drive axle? I believe all s14 have 6 bolt lug pattern. Some s15 have 6 or 5.
Last edited by surewire; 12-10-2018 at 15:33.
I would double check the ratio and that it is definitely a helical s15 diff, some s15's came with the s14 s14a limited slips and the non turbo's came with a 4.1 ratio non helical i'm pretty sure. I was looking at different diff's last year but ended up going for a skyline set up for strength and ratio, there are quite a lot of different variations so just double check what you are getting.
Thanks for heads up lads been after one of these for years; when I have my sr20de throttle body fitted with the helical diff which will be next spring the ultra responsive and drivable s14a will be finished.
Helical's are the perfect fast road/track diff imo. You'll love it.