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Discussion in 'Engine Topic' started by Craig69SSRS, Sep 19, 2019.
How so, catalytic converter?
No. We have no cats on these cars. It’ll do harm to the metal your trying to protect in the engine.
Was fishing with the question, but only reason I can see is that way too much zinc can sludge up an engine.
I dought sludge is the issue. With too much ZDDP you will see corrosive wear and the oil becoming acidic.
Copo is correct and if will also inhibit grain structure of certain metal contact areas
Great discussion! (my 2 cents)
To the OP :
Was the oil filter bypass plugged ? Or was the OE valve still in place ?
And I will second what 76z28 has stated , oil is not the issue with SFT or HFT cams going flat , there are many issues that contribute , oil is a very small part of it , especially in a BBC .
At the 5K miles the OP said was on the engine , those lobes were "going" flat for almost all of that mileage , it didn't happen all of a sudden. That's a fact.
If while breaking in a cam and your pushrods are not rotating, then the cam will be toast sooner or later.
As well as the lifters ......
I would wager a bet that those whom have "lost" flat tappet cams (and even those that have not) could not begin to tell anyone what the lifter bore clearance is .
As these parts wear , holes that were once round , are not .
^^^ Novel Idea.....