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  #16 (permalink)  
Old 11-16-2004, 07:36 AM
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Just want to ditto on the ring gap. I cant see how KB pistons would negate the common timing practices of performance SBC engines. 34-36 degrees is typically what an engine likes depending on the total package. It seems to me that KB is just trying some CYA since the hypers are much more sensitive to detonation than forged pistons.

I have also delt with dirttrackthunder and they are very good to work with as well as knowledgable about the parts they sell. You could also look into a set of SRP pistons. I am running them with CA Zgap rings in my turbo engine and I must say they are very nice. They are a little more than the wiescos if you count ring costs, but are basically JE pistons in a different box from what I have been told.

Chris

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Old 11-16-2004, 10:52 AM
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Here is where the Kieth Black states below:

"Ignition timing on most KB installations should be 30-34 degrees total with full mechanical advance dialed in. More advance may feel better off the line, but the engine lays down as the combustion chamber components come up to temerature. "

Any thoughts?
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Old 11-16-2004, 11:04 AM
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I agree with Chris. KB is just covering their butt.

Not really worth discussing or arguing over. The fact is ring gap is the biggest risk to those pistons after that it is detonation. If you had a combo that liked 40* of timing and didn't detonate the KBs would work fine. Changing the type of piston has little to do with your timing curve/amount (IMO).

I think the reason they put that *note in there is because these pistons will mostly be used in street cars or cars that run on pump gas for the most part. With todays pump gas you can't get away with a bunch of timing so they are trying to keep people out of detonation. Not many pump gas engines are running more than 34* of timing anyway.

Royce
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