Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Near perfect diff for VQ or V8 conversions

40flash · 03-01-2013, 11:48 AM

Update. Although my Q45 diff, the z33 and Pathfinder diffs are all R200s, the z33 and pathfinder diffs are wider than the Q45 diff which my Helical fit in perfectly. The problem then is that my S15 Helical is 3/4 of an inch narrower than the z33 diff and the bearings have nothing to support them and it can't be bolted into the Z33 diff housing without serious modification.
So, a diff that is designed for a narrow case will not bolt into a wide case. I'm thinking I will sell the Q45 diff with the Helical S15 limited slip with 3.538 gear ratio installed and ready to go. It is a bolt-in for the S14 subframe. Your stock axles will work. You just need to shorten or change the driveshaft which you need to do anyway if you are doing the VQ or V8 swap.

03-01-2013, 11:48 AM	#9
40flash Leaky Injector Join Date: Oct 2009 Location: Arizona Age: 69 Posts: 56 Trader Rating: (0)	Update. Although my Q45 diff, the z33 and Pathfinder diffs are all R200s, the z33 and pathfinder diffs are wider than the Q45 diff which my Helical fit in perfectly. The problem then is that my S15 Helical is 3/4 of an inch narrower than the z33 diff and the bearings have nothing to support them and it can't be bolted into the Z33 diff housing without serious modification. So, a diff that is designed for a narrow case will not bolt into a wide case. I'm thinking I will sell the Q45 diff with the Helical S15 limited slip with 3.538 gear ratio installed and ready to go. It is a bolt-in for the S14 subframe. Your stock axles will work. You just need to shorten or change the driveshaft which you need to do anyway if you are doing the VQ or V8 swap.