Technical > Matt Shaff's Engine Shop

Time for a rebuild?

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gasserx:
There is one race left this season on my local drag strip before the winter gets back here...Race or save?
After last oil change, i think it looks like there is sparkles in my oil.... micro flake...very very tiny, you probably know what i mean. I havent seen anything of this before (i have changed oil after every two runs). But that said, i dont find it easy to see anything at all when its mixed with alky. We decided to run it a little bit leaner for the two last runs, so this oil isnt as grey as it has been before and that might be the reason i noticed now...not sure.

Something is wearing, but not sure what it is.

I have planned to rebuild this winter anyway, just wonder if i should start now, or try a few more runs.

Frontenginedragsters:
Take a look up in cylinder head area. See if you can find traces of metal in the oil by the return holes on the ends of the heads.
If it has metal flakes anyplace in the valve spring area you better play it safe.
Hard to tell you not to race it........ :-[
Does it have aluminum rods? Sometimes the chaffing between the rods gets a little more wear when you run it hard.
Use your own judgement but play it safe.

Matt

gasserx:
Pretty sure its aluminum or brass, because there arent a single microscopic tiny bit on the magnetic drain plug.
No aluminum rods..
Can be a bearing or magnetodrive maybe. Think i'll play safe and split it open. Have a few things i would like to improve anyway.

gasserx:
I flushed the engine with alky last night and poured it into a clean container. Lots of tiny glitter, and even some bigger flakes. So i am tearing the engine down! Pretty sure its aluminum.

LZ:
Gas:
I looked at your other posts and did not see a mention of what you are using for a filter so apologize in case I missed it.
What filter are you running. Have you taken it apart or cut it open?
Have you had a chance to watch your oil pressure when your braking from a burnout or shutting down?
Be really curious as with what you say your seeing in the oil and returns on heads.
From what you are saying I totally agree with Matt FWIW. better to use up a few gaskets then window the block. At least a dive on the bearings.
Just a shot in the dark but are you sure you have your converter spacing correct?
just throwing it out there for your consideration. No disrespect intended.
good luck
Luke

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