S15 HLSD Final drive on S13

[Kevin_RHD]

Hey guys, I would like to know if the 4.636 or the 4.364 final drive fit on my S13 Silvia VLSD Pumpkin with a S15 HLSD?

The Nismo Shop : West Covina Nissan : Nissan Final Drive Gear Sets - 240SX (http://www.thenismoshop.com/catalog/240SX_180SX_Silvia-Differential/Nissan_Final_Drive_Gear_Sets_-_240SX.html)

[racepar1]

Yes it does...

[xpertsnowcarver]

http://zilvia.net/f/chat/297481-small-questions-thread-use-insted-making-new-threads.html

[Kevin_RHD]

I'm asking ,because the guy at FRSport told me not.

Sorry for the new thread, I didn't know.

[g6civcx]

I'm asking ,because the guy at FRSport told me not.

I don't want to give you contradictory information. If you're already working with someone then it's best to stick with that person unless you don't believe them completely and want to go off on your own.

Your question may not have been clear or the FRSport rep may not be understanding you completely. Or the rep may just be working off of their spec sheet and don't want any liability for giving you potentially bad info to cover themselves.

Please don't go back to FRSport and tell them that Zilvia is calling them BS.

[Kevin_RHD]

No no of course I won't! That's exactly what he told me about the spec and parts number. That's why I'm asking to others.

[racepar1]

People put s-15 HLSD's in stock s-13/s-14 housings all the time. If it'll work with a stock ring and pinion, why wouldn't it work with a bolt-in replacement? The only difference might be the bolts.

[Kevin_RHD]

Here are my calculations
mph = (rpm * cir) / (gear * final * 88)
I used for the circumference tire size 225/45R18
75 mph = (3000[rpm] x 6.8[foot]) / (0.759[5th gear]x4.080[final drive] x 88)
70 mph = (3000[rpm] x 6.8[foot]) / (0.759[5th gear]x4.364[final drive] x 88)
66 mph = (3000[rpm] x 6.8[foot]) / (0.759[5th gear]x4.636[final drive] x 88)

87 mph = (3500[rpm] x 6.8[foot]) / (0.759[5th gear]x4.080[final drive] x 88)
82 mph = (3500[rpm] x 6.8[foot]) / (0.759[5th gear]x4.364[final drive] x 88)
77 mph = (3500[rpm] x 6.8[foot]) / (0.759[5th gear]x4.636[final drive] x 88)

So with a 4.636 it should be in the right rev range