Problem w oil filter sandwich adapter - Team Camaro Tech
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post #1 of 2 (permalink) Old May 28th, 17, 02:26 PM Thread Starter
Join Date: Oct 2016
Location: Sweden
Posts: 6
Question Problem w oil filter sandwich adapter

Decided to get an oil cooler for my -68 with Chevy Performance ZZ4 383, but ran into some problems.

I got a B&M oil cooler and a Derale oil filter adapter. Made some hoses with low pressure hydraulic fittings (I don't like hose clamps) rated to 16 bar/232 psi.

Took the car fore a test drive... the second time I floored it, oil spewed out under the car and I was lucky to be able to kill the engine before I lost all oil pressure.

I took it all apart and one of the hoses was blown/cut next to the oil filter adapter. I chalked it up to me doing something wrong when I pressed the fittings. Maybe I damaged the hose or something?

Had new hoses made, this time with steel reinforced hoses and high pressure fittings rated to 310 bar/4 496 psi (I do like overkill )

Took the car out for a spin, didn't even drive it hard, and after a while oil started leaking between the adapter and the oil filter.

Took it all apart again but I can't see any problems. All o-rings/gaskets are fine. No visual damage to any components. But for some reason the pressure seems to high down by the filter.

According to the oil pressure gauge, I have around 60 psi idling with cold engine. When the engine gets hot, the pressure drops to around 45 psi. Unfortunately I don't have a tach, but driving around 55 mph at fifth gear (2 000 - 2 500 rpm?) I have 50-55 psi of pressure. I never saw what pressure it peaked at before the hose blew.

What about the bypass valves?
  • I guess there is one valve in the engine block oil filter adapter (adapter looks like this), haven't taken it apart, so I can't swear there's a valve in there.
  • Then there's some sort of valve in the sandwich adapter - kind of a clock spring thingy.
  • And then we have the filter (Progage PGO-5288), doesn't it also have some kind of bypass function?

Have I combined parts that won't play along nicely? What have I done wrong? Since I didn't build the car I don't have any info about the internals of the engine. But I guess it's the stock Chevy Performance stuff in there.

Any and all input is welcome!

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post #2 of 2 (permalink) Old May 28th, 17, 06:15 PM
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Location: Va Beach VA
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Re: Problem w oil filter sandwich adapter

The adapter shown from Speedway is filter bypass when filter is full of debris.
I would say you need Diagram #3 for your application as OE filter needs a flat surface for sealing, and yours needs the adapter supplied.
What I don't see is a groove for any O-rings, just flat surfaces to swish the O-rings - not good.
Groove would be deep enough for providing a 20% crush when assembled.
Or the groove is on the side of the items shown and not seen.

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oil cooler, oil filter, oil pressure, sandwich adapter

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