UK Karting - Notice Board (4-Stroke Karting) : Re: GX160 Valve Clearances

Notice Board (4-Stroke Karting)

Re: GX160 Valve Clearances
Posted by 'RoadRat' on 26 Oct 2009 @ 19:35

| View Message Thread | Reply to this message |

RoadRatJoined: July 2007
Total Posts: 1
[ View User Profile ]

Not sure exactly why on either point but:

With the valves, if they are lapped too much the contact area on the valve seat becomes very large and a groove forms around the valve. This is likely to make a good seal more difficult and also allows more heat to transfer from the valve to the seat, which probably causes further distortion.

As for the valve gap becoming larger, strange but true. Obviously different parts of the engine are expanding differently to cause this. Bear in mind the valve train extends from the bottom of the engine, perhaps the block or head is expanding enough to cause the slack.

Message Thread:

GX160 Valve Clearances by 'MJK' (24 Oct 2009 @ 16:28)

Re: GX160 Valve Clearances by 'Booney' (24 Oct 2009 @ 17:50)

Re: GX160 Valve Clearances by 'Eddy' (24 Oct 2009 @ 18:16)

Re: GX160 Valve Clearances by 'Thehairbears' (25 Oct 2009 @ 8:36)

Re: GX160 Valve Clearances by 'lard ass bob' (25 Oct 2009 @ 12:17)

2 & 3 thou ( Stone cold ! ) by 'Trev' (25 Oct 2009 @ 15:24)

Re: 2 & 3 thou ( Stone cold ! ) by 'RoadRat' (25 Oct 2009 @ 15:38)

Re: GX160 Valve Clearances by 'RoadRat' (25 Oct 2009 @ 14:50)

Re: GX160 Valve Clearances by 'Thehairbears' (25 Oct 2009 @ 15:13)

Re: GX160 Valve Clearances by 'RoadRat' (25 Oct 2009 @ 15:27)

Re: GX160 Valve Clearances by 'MJK' (25 Oct 2009 @ 16:22)

Re: GX160 Valve Clearances - Roadrat by 'iant' (25 Oct 2009 @ 17:21)

Re: GX160 Valve Clearances - Roadrat by 'RoadRat' (25 Oct 2009 @ 17:26)

Road Kill = Roadrat by 'Trev' (25 Oct 2009 @ 20:18)

Re: Road Kill = Roadrat by 'RoadRat' (25 Oct 2009 @ 20:23)

Consul of France, Napoleon Bonaparte by 'Trev' (25 Oct 2009 @ 21:24)

Re: Consul of France, Napoleon Bonaparte by 'RoadRat' (25 Oct 2009 @ 22:11)

Re: GX160 Valve Clearances by 'JohnMartin' (26 Oct 2009 @ 13:05)

Re: GX160 Valve Clearances by 'RoadRat' << You are here!

Re: GX160 Valve Clearances by 'JohnMartin' (26 Oct 2009 @ 22:38)

Post a Reply:

You may post a direct reply to this message which will appear in this thread.
To post a new or unrelated message use This Form. Top of Page
Notice Board Index

[ UK Karting Main Index ]


News	Karts & Karting	Notice Board	Market Place	Companies Directory	Tracks Directory	Events Calendar	Race Results	Photo Gallery	Links