Technical > Matt Shaff's Engine Shop
Time for a rebuild?
gasserx:
--- Quote from: LZ on August 20, 2015, 03:30:05 AM ---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
--- End quote ---
Hi Luke, i dont think i mentioned the filter either. I use FRAM HP4 filters, but i have not split the last filter. I`ll do that tonight and see whats inside.
I dont watch oil pressure down the strip, i have a gauge for my guy to watch at startup and before and after burnout.
I will split open the entire engine anyway. I dont think i will risk anything.
I will check converter spacing again while at it.
Thanks :)
dusterdave173:
That engine was a pretty solid unit when Jim let it go as I remember--It is EASY to make a mistake with converter and flexplate area that will knock thrust bearing out quick as a wink--usually converter hub not fitting inside crank like needed--was converter made for engine plate? maybe snatch the oil pan and look at thrust first I believe that engine was running 5.20-5.30 range when pulled out here
gasserx:
I have 16 runs on it now, and the "glitter" appeared on the last two runs. No traces of it in the oil before that.
Could be thrust bearing also, i'll check everything.
Some of the parts needs to be replaced anyway, like the stud girdle - wich was (sorry) a piece of crap. Going to upgrade to a complete Jesel rocker arm assembly.
I have a best run of 5.7 so far...with very little experience, no transbrake and probably too big rear tires ;D
Closing in...
Mister_Fitz:
I had similar problems with my alky injected sbc. Used the same Fram oil filter and Valvoline vr1 racing 20w-50 oil. Found the glitter up in the oil channel to the lifters. It must have bypassed the oil filter due to cold and thick oil. Also lost oil pressure when braking after the finnish line. My glitter came from the main and rod bearings.
My solution to this was to change to a K&N oil filter and kendall gt1 20w-50 oil. Install an oil heater and an accusump.
I pre heat the oil to keep the oil filter from bypassing due to thick oil. The accusump prevents the loss of oil pressure when braking. I have a milodon full length pan with trap doors and 7qt in it. But it didnt keep the engine from loosing pressure when braking.
My accusump is the 3qt modell. I run a total of 10qt in the engine now. 7qt in the engine and 3qt in the accusump. Problems are gone. Planing on decreasing the amount of oil a bit for next season.
dusterdave173:
I agree the Milodon pan is a joke--the "trap doors" etc simply do not work. I have zero issues running 1/8th but that first 1/4 mile shut down caused my oil pressure to drop hard under braking. I am looking for a different pan that will do the job better, Accusump will cure it though.
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