[Tom Vaught]

Originally Posted by ErikW

18deg total timing at 18psi of boost on E85. I know it's a low number but I'd rather lose a little power for the sake of longevity. We didn't get a chance to add any more before the lifter broke. So there is more to come. Combo is new and new to us so again, baby steps. Initial timing is irrelevant really.

Explain please why 18 degrees of timing at 18 psi of boost is a "Low Number".
I know of several engines with E-85 fuel and twice the boost that makes excellent power at 18 degrees of total timing at that much higher boost.

Aggressive timing at full boost will always cost you a lot of money and engine parts over time.

Tom V.

[wreckmastr]

Originally Posted by Tom Vaught

Explain please why 18 degrees of timing at 18 psi of boost is a "Low Number".
I know of several engines with E-85 fuel and twice the boost that makes excellent power at 18 degrees of total timing at that much higher boost.

Aggressive timing at full boost will always cost you a lot of money and engine parts over time.

Tom V.

If you start with 36-38 degrees of initial timing and your down to 18 degrees at 18lbs of boost IMO that is a "Low" to pull 18 to 20 degrees for that low of boost. Which is why I asked what the initial timing was even though the OP feels its irrelevant.

[Curtis Slowe]

Originally Posted by wreckmastr

If you start with 36-38 degrees of initial timing and your down to 18 degrees at 18lbs of boost IMO that is a "Low" to pull 18 to 20 degrees for that low of boost. Which is why I asked what the initial timing was even though the OP feels its irrelevant.

That is what I thought too and why I ask. My car is a stock block also for now. I run 38° base timing and am now at 24° at 14psi. That is still low on mine and I'm on pump gas. I was conservative with mine for a long time. Turned the boost and timing up some and it was fine. Next time out at the track I'm gonna bump mine up to 27° on the 14psi. It's already in the box.
And the reason that I run 38° of timing initial is because it's a street car and runs good on 38°.
Not a pissing match. Was just curious. I kind of took the replies as being crappy too with the "moon tune" comment and the " anybody that runs more timing is a parts man's friend" stuff.