Re: Exhaust valve seat in a small engine?

Posted by NCWayne on May 15, 2012 at 09:18:37 from (69.40.232.132):

In Reply to: Exhaust valve seat in a small engine? posted by paulinkansas on May 15, 2012 at 08:54:54:

You'll want to order the seat that is larger than the hole it'g going into because it needs to be a press fit. Without any real numbers it's impossible to say wether your going to need to have any machine work done, but typically you'd want fairely tight press fit on something like that so your probably looking at a seat that would be about .007 larger than the hole for aluminium heads, and about .005 larger for cast iron heads.

Here's a link to a place that carries the cutters to prep the heads for an insert. The info I just gave came straight from their site.

• SBI International

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