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!