Differences in Oil Pump Gears? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

2_Liter_Turbo · 12-02-2017, 04:28 PM

Went to go install the billet oil pump gears on my race car's engine. Found that they were a different size! Suck! Not sure what to do now, lol.

Application listed is the SR20DET, which is what I have. The outer ring diameter is 4mm smaller than OEM! Anyone else hear of 81mm vs 77mm SR20 gears? Thickness is different as well (Reimax is 10mm, factory is 9.4mm).

2_Liter_Turbo · 12-03-2017, 11:54 AM

Well, found that Reimax only makes gears for the S14/S15 oil pumps, not the S13 SR. When I bought these, they were listed for all RWD SRs... guess not.

jedi03 · 12-04-2017, 10:18 AM

arent some of them interchangeable?

RalliartRsX · 12-04-2017, 10:26 AM

Quote:

Originally Posted by jedi03

arent some of them interchangeable?

I think over the years and various configurations, there have been 5-8 different pump designs between FWD, RWD and 4WD SR20.

So the answer is; not necessarily (as the OP has figured out).

Example: SR20VE oil pump varies from a standard SRDET oil pump although they have the same external dimensions (if you look at them side to side internally, the differences are significant)

12-03-2017, 11:54 AM	#2
2_Liter_Turbo Zilvia Addict Join Date: Mar 2005 Location: DFW, TX Age: 40 Posts: 803 Trader Rating: (28) Feedback Score: 28 reviews	Well, found that Reimax only makes gears for the S14/S15 oil pumps, not the S13 SR. When I bought these, they were listed for all RWD SRs... guess not. __________________ 96 S14: Grip Track Car 90 R32: Bucket List Car 92 S13: Just for Fun Car Instagram: @SS.Maxey

12-04-2017, 10:18 AM	#3
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,836 Trader Rating: (8) Feedback Score: 8 reviews	arent some of them interchangeable?