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Subaru Oil Pump Buyers Guide
November 10, 2022
We take a look at the oil pumps available for the Subaru EJ motor in the WRX and STI. OEM Subaru, Roger Clark Motorsports and IAG are compared on features and usage. We explain the 10mm, 11mm, and 12mm and which one you should select for the engine build in your Subaru.
In this Episode:
00:00 - Intro
00:10 - When would you change your oil pump?
00:53 - What oil pumps are we looking at?
01:13 - What is the difference between the Subaru 10mm 11mm and 12mm oil pumps
01:55 - What Oil Pump is best for a stock Subaru EJ Turbo Engine?
02:25 - The difference between volume and pressure in your oil pump
03:33 - What happens if you put a larger volume oil pump on your engine?
04:41 - Are there any down-sides of running a larger volume oil pump?
05:30 - What if you are making changes to the engine's oiling system?
06:20 - A look at the Roger Clark Motorsports Oil Pumps
08:06 - A look at the IAG Stage 1 and Stage 2 Oil Pumps
09:20 - Final thoughts on all of these oil pump options
Oil Pump Kits
Subaru OE
10mm
https://www.flatironstuning.com/subaru-oem-oil-pump-10mm-02-14-wrx-06-07-sti-1
11mm
https://www.flatironstuning.com/usdm-oil-pump-11mm-08-19-sti-1
12mm
https://www.flatironstuning.com/jdm-subaru-oil-pump-12mm
Roger Clark Motorsports
10mm
https://www.flatironstuning.com/rcm-modified-oil-pump-10mm
11mm
https://www.flatironstuning.com/rcm-modified-oil-pump-11mm
12mm
https://www.flatironstuning.com/rcm-modified-oil-pump-12mm
IAG
Stage 1
https://www.flatironstuning.com/iag-stage-1-blueprinted-ej25-11mm-oil-pump-04-21-sti-02-14-wrx-05-12-lgt-04-13-fxt
Stage 2
https://www.flatironstuning.com/iag-stage-2-cnc-ported-ej25-11mm-oil-pump-04-21-sti-02-14-wrx-05-12-lgt-04-13-fxt
Oil Pump Discussion w/ Victor at Desert Monkey Rally
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