Dry sump oil filters question

Dry sump oil filters question

Author
Discussion

Greathey

Original Poster:

136 posts

71 months

Wednesday 14th May
quotequote all
I replaced the oil filter in my 4.3 v8v with a generic blueprint filter because I couldn't get a genuine one on time and never thought much of it.

However, I discovered just yesterday that dry sump oil filters are much sturdier to cope with the immense pressure of the pumps. Normal oil filters can burst under pressure.

My question is how serious really is it? Shall I replace the filter ASAP or can I wait till next service?


Riddochg

175 posts

93 months

Wednesday 14th May
quotequote all
My 4.3 vantage missed an oil & filter change for 2 years, was doing so few miles didn’t think it would be an issue.

Big mistake filter has degraded & waiting to see if it’s dumped any crap into the engine. I wouldn’t risk it!

cliffords

2,581 posts

38 months

Wednesday 14th May
quotequote all
How can you tell the filter has degraded?
Is it cartridge or screw on.
Interested how you can tell it's degraded

Riddochg

175 posts

93 months

Wednesday 14th May
quotequote all
The car is with David Appleby and he sent me a photo of the filter versus a new one!

Riddochg

175 posts

93 months

Wednesday 14th May
quotequote all

Import

257 posts

45 months

Wednesday 14th May
quotequote all
Wow..that’s messed up…good to know for the future..

cliffords

2,581 posts

38 months

Wednesday 14th May
quotequote all
Thanks for the picture,that's very odd.
Tha plastic IF it's from the filter is either the bypass valve or the anti drain back mechanism,apart from the media there is nothing else it there .

I think it's the anti drain back mechanism, and I suspect it was damaged when fitted, they can get damaged if the filter is massively overtighten.
I have seen it once before of a Chevy engine I rebuilt. I fitted a filter that was the wrong type and the centre screw broke the mechanism as it was too long .

It was not as broken up as that one .

Good save , I hope .

DB9VolanteDriver

2,631 posts

191 months

Wednesday 14th May
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What ‘immense’ pressure is generated by a dry sump set up as compared to conventional? Sounds like misinformation to me.

Riddochg

175 posts

93 months

Thursday 15th May
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Clifford’s, thanks. Won’t know until next week if anything has got into the engine, which would be bad!

digitalsolo

1 posts

2 months

Friday 16th May
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Pretty dubious about the dry sump pressure being problematic for filters. My Mustang runs a high output oil pump and makes 130+ PSI at full chat, and a high output 2JZ I helped put together makes a bit more than that. Both just use good Wix filters. Never had an issue with them.

Good quality filter, reasonable intervals. It's just a street engine at the end of the day, no real magic to it.

cliffords

2,581 posts

38 months

Friday 16th May
quotequote all
I was doing some night time reading yesterday on this, just interested by the pic of the filter with the material in it. It appears a generic blue print spin on filter is rated to 150 psi albeit a bypass valve will open at about 40 psi pressure differential between in and out. I think the ops engine dry sump pump makes 75 psi so it remains a mystery what that material is.
Waiting with interest next week for an update.

Riddochg

175 posts

93 months

Tuesday 20th May
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To quote James Appleby I’m one lucky guy. Or words to that effect. The oil filter had started leeching the white material into the engine & had started to block one of the oil feeds. It was only a question of time before the engine would have given up.

And here’s the really lucky bit. I hit a rock that ripped a hole in the sump, not that lucky except it meant the car had to be recovered to DAE. Damage to the oil filter was completely unrelated. So if I hadn’t of hit the rock the engine would have been a goner!