Author Topic: Useful A10 valve info.  (Read 192 times)

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Jackson

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Useful A10 valve info.
« on: 22 January, 2018, 15:25:32 »
You may all know about this already, but in case you didnít.
Iíve just bought new inlet and exhaust valves (53 plunger A10) and they appear to be the same size and arenít marked in any way☹️
Just found out how to tell them apart. The exhaust valves are Austenitic steel and non magnetic. The inlet valves are magnetic. Saved me a lot of trouble.

AWJDThumper

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Re: Useful A10 valve info.
« Reply #1 on: 22 January, 2018, 16:27:34 »
Presumably, these are modern exhaust valves designed for unleaded fuel - they need to use ~SS material to stop valve seat recession.

Jackson

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Re: Useful A10 valve info.
« Reply #2 on: 22 January, 2018, 18:42:58 »
I'm hoping so, but I've been told that it applies to older valves as well, due to the behaviour of Austenitic steel at high temp (not something I know about though).

STAR TWIN

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Re: Useful A10 valve info.
« Reply #3 on: 22 January, 2018, 22:19:00 »
It has certainly been the case for many years - 50 that I know of and probably many more.