UK Karting - Notice Board (4-Stroke Karting) : Re: Gx valve size ?

Notice Board (4-Stroke Karting)

Re: Gx valve size ?
Posted by 'GXTuningStoreUK' on 06 Jan 2013 @ 20:49

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GXTuningStoreUKJoined: December 2012
Total Posts: 8
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Jon,

The standard size exhaust valve is 23.5mm, although I list them on the webstore as 24mm as this is what they are most commonly known as.
The head I had pictured had enlarged inlet valve (28.5mm) and the exhaust valve ground out to 25mm.

I think this is the cylinder head you are referring to - https://www.facebook.com/photo.php?fbid=274291149360959&set=a.237478713042203.51862.108258655964210&type=3&theater

This is a 14cc cylinder head, with a 28.5mm inlet valve, which you must use with an enlarged valve seat to match. The exhaust valve is 25mm, which can be achieved simply by regrinding the standard seat. The chamber has then been welded and shaped, and the valves have been unshrouded. The inlet port has also been welded, to strengthen the port and allow us to port it beyond the standard casting allows. The surface of the head has also had an O ring machined for better gasket sealing.
I think that head is for sale, for around Ł300, including valves.

Thanks,

Message Thread:

Gx valve size ? by 'Jon308' (05 Jan 2013 @ 16:51)

Re: Gx valve size ? by 'DrewHoward' (06 Jan 2013 @ 15:07)

Re: Gx valve size ? by 'Jon308' (06 Jan 2013 @ 16:46)

Re: Gx valve size ? by 'lard ass bob' (06 Jan 2013 @ 17:38)

Re: Gx valve size ? by 'GXTuningStoreUK' << You are here!

Re: Gx valve size ? by 'Jon308' (06 Jan 2013 @ 22:18)

Re: Gx valve size ? by 'BrianP' (07 Jan 2013 @ 9:37)

Re: Gx valve size ? by 'Jon308' (07 Jan 2013 @ 20:39)

Re: Gx valve size ? by 'GXTuningStoreUK' (08 Jan 2013 @ 20:50)

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