It will also burn and pit the exhaust valves.
I did this to an engine back around 2001.
Pistons were fine. The exhaust valves were fried.
But I made the mistake of lean at wot.
In my 454 suburban it was rich at wot, lean the rest of the time. Tore down the engine after 9 months of running it that way and the Pistons and exhaust valves were fine.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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