guide material with big spring pressure

[airflowdevelop]

have there been any advances in guide material for the guys running big spring pressure (>1000lbs over the nose)? I have thought about running a stelite guide with a little additional clearance, but worry about it's ability to get the heat out of the valve...plus if it starts to wear, watch out!


Thanks
Dennis

[Fkned]

I never had any problems w/bronze liners or guides w/those spring pressures.But my guy's would tear down and freshen every 40-50 passes.

[cboggs]

I agree with Ed, .. never had a problem unless there was a valve
train geometry issue that caused some undue side load on the valve stem.

Curtis

[Darin Morgan]

have there been any advances in guide material for the guys running big spring pressure (>1000lbs over the nose)? I have thought about running a stelite guide with a little additional clearance, but worry about it's ability to get the heat out of the valve...plus if it starts to wear, watch out!


Thanks
Dennis

In the Pro Stock engines I use the Beryllium guides. They DO NOT wear out like the bronze guides. They are much stronger and can take a lot more heat. I have had them in heads for five years before replacing them. I can also bullet them in the exhaust ports without having them flake, crack and melt away.

[airflowdevelop]

Thanks Darin...we have gone down that road already...but it proves a costly one that the sportsman racers don't care for. Any ideas on a location to get them in quantity at a little beter price?


Dennis