How important is quench?

[434nova]

I know on a na motor quench is important but how important is it on a turbo application? I was talking with a couple of friends who seem to think it’s not important on a turbo, supercharger, or nitrous setup since your forcing air and fuel into the cylinders. What do you guys think?

 

[Boost231]

Quincy in reference to combustion burn or the cooler area or in reference to overall compression?

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[earlbrown]

''Forcing'' the air in has nothing to do with quench. During compression, the intake stroke and all it's nuances are long gone at that point.


Quench is pretty much a pre-ignition suppressor. If having quench allows you to run lower octane gas, or more boost, it's important as hell.

On an engine with plenty of octane reserve that doesn't stress the fuel, quench is much less important.

....but we don't care about those cars.

 

[Mike T]

This like many other subjects on here is one of those things you just can't give a blanket answer to. I have been running an near quenchless chamber for quite a few miles/ years now with no problems.