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Which oil filter to run with high psi system?

Old 01-04-16, 12:01 PM
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CT Which oil filter to run with high psi system?

With a modified oiling system (100psi+), what is the recommended oil filter to use. Keeping the stock pedestal.

Or, at what psi would you like to see the(oil filter) bypass start to open?

Im a bit of a noob, but most oil filter bypass's open on average around 7-12psi.

I use a 32psi filter on my audi (runs 30lbs of boost).

Im really now just thinking about it, if I have 100 psi of oil pressure, does the filter stay open all the time? I hope not!

Would love to learn something new.

Thanks.
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Old 01-04-16, 07:38 PM
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stock filter is fine, the FD came with 110psi stock, and used a stock filter. if you're really paranoid, use the later Rx8 filter, N3R1-14-302, its again designed around 110psi
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Old 01-06-16, 01:16 PM
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Originally Posted by heywier427 View Post
With a modified oiling system (100psi+), what is the recommended oil filter to use. Keeping the stock pedestal.

Or, at what psi would you like to see the(oil filter) bypass start to open?

Im a bit of a noob, but most oil filter bypass's open on average around 7-12psi.

I use a 32psi filter on my audi (runs 30lbs of boost).

Im really now just thinking about it, if I have 100 psi of oil pressure, does the filter stay open all the time? I hope not!

Would love to learn something new.

Thanks.
Most all canister (OME style) filters will hold 150psi. But you need to look at flow rate. Once a restriction of flow builds, then the by-pass opens. So realistically it's 7-25psi back psi that opens the by-pass valve.

There are some that think (if it's track/race only car) using the creeper filters with less filtering element makes for better flow. Ones like CARQUEST (made by Wix) is their choice.
But they also change oil every race weekend.

We are also starting to use 2 filters. One before the cooler and one after. A safety for the cooler and pump.
And are thinking about making the filter block a flow through (no filter) block. Since we can have 2 inline filters.
The thinking behind this is that a stock type filter, if restricted, opens the relief valve and flows un-filtered oil. Just as you were thinking.
____--- This has not been tested yet---___

Most filter spec's say, if there is no by-pass valve, to change the element if psi drops 4 to 5 psi.
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Old 01-07-16, 06:49 AM
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I have tried a number of different "Race" filters and the one brand that I have settled on is the Wix Racing Filter. First superior quality of build and parts. Great filtering and interestingly less of a pressure drop at idle, not only in my RX7 Racecar, but also in my Cougar Racecar. The RX7 generates about 120 psi cold and the Cougar about the same and they never leak. Granted both are using remote filters and the extra capacity of the bigger filter is good, but I also hang the filter out in the airflow from my one marker light opening and I saw a hot/ racing temp drop as well. They wont work on a pedestal, but they are great filters.

Eric
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Old 01-07-16, 01:25 PM
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Thank you all for your insight.

Tom.
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