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Hardened Valve seats

Posted: Wed May 24, 2023 2:36 pm
by Rosco59
Hi does anyone know where you can buy hardened valve seats. It's for a pinto with standard valves. Thanks

Re: Hardened Valve seats

Posted: Wed May 24, 2023 10:52 pm
by Mc Tool
I would think the automotive engineer you will need to do the required machining would supply them .🙂

Re: Hardened Valve seats

Posted: Wed May 24, 2023 11:59 pm
by Paul G
I don't know where you are based, but as Hamish says take your cylinder head off and take it to an automotive engineering works. The old valve seats have to be machined out and the new seats are a hardened steel which frozen in liquid nitrogen then dropped into the machined out "hole". When it all gets to normal temperature it forms an interference fit to keep the new seats in place.

It most definitely is not an "at home " DIY job.

Re: Hardened Valve seats

Posted: Thu May 25, 2023 6:17 am
by Mc Tool
Just thinkin a bit more . If your car has a few miles on it .......like maybe needs valve guides lookin at , it might be better to buy a whole head , specially if you can exchange the old one . Maybe someone like Burton power .🙂

Re: Hardened Valve seats

Posted: Thu May 25, 2023 10:29 am
by Rosco59
Hi I work in a machine shop and was going to try it on a spare head but couldn't find anywhere to buy the valve seats. Thanks

Re: Hardened Valve seats

Posted: Thu May 25, 2023 8:55 pm
by Mc Tool
Burton power do sell hardened valve inserts ( I saw them whilst searching their cylinder heads )😁