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Author Topic:   Block oil bypass?
Desert Mod
Dirt Full Roller

Total posts: 60
posted November 06, 2005 12:30 PM  
Is it worth the effort to block off the spring oil pressure bypass on a SBC oil filter adaptor? We used to put a small freeze plug in place of the spring mechanism but now that I'm old, I can't remember if this was a good idea or not.

autoshop
Dirt Freak

Total posts: 298
posted November 06, 2005 12:34 PM  
We take the spring and flat washer out and put a pipe plug in. I had the spring colaspe and thought I lost oil pressure in the motor one night when I took it apart it was just the spring broke and letting the washer fall to where there was no pressure.

James Ott
Dirt Maniac

Total posts: 131
posted November 06, 2005 01:03 PM  
Wow that would be rare failure for a bypass. My thoughts would be to replace it but leave it stock. When oil is cold it is thick and has trouble flowing through the filter. Also a dirty filter will not flow so well at say 6000 RPM. If you use quality filters, that oil in the pan should be cleaner then when it came out of the bottle. The bypass may only open slightly to keep the magic flowing to make up for the pressure drop across the filter. This will result in your engine getting "unfiltered" oil but it is a far cry better than low oil flow. Oh yeah if you really get lazy or forgetful and neglect to change the filter and it gets plugged it will either blow out the sealing ring or un-roll the crimp. This type of failure results in zero oil flow. I have seen this happen a few times. Just my opinion

[This message has been edited by James Ott (edited November 06, 2005).]

Ego Racing
Dirt Forum Champ
Total posts: 724
posted November 06, 2005 04:43 PM  
Every aftermarket oil filter adapter has no bypass. ALOT of the new bypasses are a fiber disk, We have bulled about 5 apart on motors we got to build race motors and they had the disk cracked. One of them we never found the disk any where. When we spoke to the guy he said it lost pressure and he changed to oil and it did not come back up so he pulled the motor. This was on a 120,000 mile motor with regular oil changes.
We plug everyone we use or use an aftermarket without the bypass. Let the motor warm up before jumping onto the gas pedal. We change the oil and filter every couple of weeks. Never had a problem.

Desert Mod
Dirt Full Roller

Total posts: 60
posted November 06, 2005 05:19 PM  
I change oil and filter after just about every race night and always warm up the engine before cranking it hard. I think I'll plug it. Thanks for the responses.

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