[hal101]

thanks cliff
im mixing fuel with a new additive and i got the octane to low on the first batch

[Schurkey]

Originally Posted by hal101

ok im done nobody wants to listen to what i say you think you know everything so please do not post to this thread anymore

We're all listening to what you have to say. YOU aren't listening to us.

Originally Posted by Cliff R

My 12:1 428 did the same thing on lower octane gas. Did not diesel with good gas.

My current 455 will do the same thing. It is 11 to 1 compression and 236/245/112 HR cam. It is tuned to the brink of extinction, timing an fuel curves are spot on, and I race the car in addition to street driving it. The engine idles fine at 700rpm's in and out of gear, so idling too fast is not the issue.

I run it on a pretty steady diet of 87 octane and it does NOT even think about pinging under any conditions. Race days only I'll mix in half a tank of 92-93 octane on the way to the track just to give me a "warm and fuzzy".

What I do see in the hottest summer months when it's fully heat soaked is that it will run on once in a while when shut-down. If I use 89-93 octane it doesn't do this. If it's in the cooler time of the year of Winter it doesn't do it either.

It also "bucks" the starter ever so slightly when it's hot enough outside and engine hot enough to "run-on" after shut down. The easy cure is to run 89 or higher octane in in July and August and it never has an issue........Cliff

Originally Posted by hal101

thanks cliff
im mixing fuel with a new additive and i got the octane to low on the first batch

So there we have it.

Proper tuning, 87 octane, no detonation, 700 rpm idle.

or,

Schitty tuning, Octane to the moon, Thousand RPM Idle, and it runs on.

I know which car I'd rather drive.

[hal101]

nobody is asking you

you couldnt answer the question so you made up a prob you thought you could fix