UK Karting - Notice Board (4-Stroke Karting) : Re: Gx 200 extreme valve gaps

Notice Board (4-Stroke Karting)

Re: Gx 200 extreme valve gaps
Posted by 'd-i-y71' on 16 Feb 2017 @ 18:09

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d-i-y71Joined: September 2009
Total Posts: 198
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In that case you can legitimately experiment with the clearances to see if you can find an advantage, if you choose.
I would start with .005 inch (5 thou). clearance on each (piston at TDC. at end of compression stroke) with the engine cold. Warm up to normal temperature and check the hot clearance to see how, and how much the clearance alters cold to hot.
IMO a hot clearance between 4 and 10 thou will be ok, and as ' Knighty' suggests, the larger clearance will favour low revs pull, the tighter clearance top end power. In theory at least. Don't expect too much!
Alternatively you can get a figure from RPM or listen to others who know more about it than I do.

Message Thread:

Gx 200 extreme valve gaps by 'Silentbob' (13 Feb 2017 @ 18:42)

Re: Gx 200 extreme valve gaps by 'lard ass bob' (13 Feb 2017 @ 19:47)

Re: Gx 200 extreme valve gaps by 'Silentbob' (13 Feb 2017 @ 20:05)

Re: Gx 200 extreme valve gaps by 'd-i-y71' (14 Feb 2017 @ 16:00)

Re: Gx 200 extreme valve gaps by 'BrianP' (14 Feb 2017 @ 18:27)

Re: Gx 200 extreme valve gaps by 'd-i-y71' (14 Feb 2017 @ 18:53)

Re: Gx 200 extreme valve gaps by 'Knighty' (15 Feb 2017 @ 11:04)

Re: Gx 200 extreme valve gaps by 'TheBougyMan' (15 Feb 2017 @ 19:27)

Re: Gx 200 extreme valve gaps by 'Jon308' (15 Feb 2017 @ 20:06)

Re: Gx 200 extreme valve gaps by 'd-i-y71' (16 Feb 2017 @ 8:21)

Re: Gx 200 extreme valve gaps by 'Silentbob' (16 Feb 2017 @ 17:04)

Re: Gx 200 extreme valve gaps by 'Mark 71' (16 Feb 2017 @ 17:44)

Re: Gx 200 extreme valve gaps by 'd-i-y71' << You are here!

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