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Pinto Big valve
Apollo1600 - 22/10/12 at 05:45 PM

Hi there,
Im after a unleaded pinto big valve head.
Cheers

chillis - 22/10/12 at 06:05 PM

You cant have big valve and unleaded - the inlet valve seat would cut across the exhaust valve seat and it would just burn out in no time.

Andy S - 22/10/12 at 09:06 PM

In a lot of instances with an iron head you only insert the exhaust seat so can go big on the inlet

quote:
Originally posted by chillis
You cant have big valve and unleaded - the inlet valve seat would cut across the exhaust valve seat and it would just burn out in no time.