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Valve Clearances
stifler001 - January 3rd, 2012 at 06:54 PM

Hi guys,

just wondering what are the best valve clearances for a 1640 TP running twin webers?

Cheers
Brad

1303Steve - January 3rd, 2012 at 08:17 PM

Hi

6 thou, cold.

Steve

stifler001 - January 3rd, 2012 at 08:26 PM

Thanks Steve, is that for both inlet and exhaust?

Bizarre - January 3rd, 2012 at 08:45 PM

yep

68AutoBug - January 3rd, 2012 at 10:18 PM

Quote:
Originally posted by stifler001
Hi guys,

just wondering what are the best valve clearances for a 1640 TP running twin webers?

Cheers
Brad



Hi Brad

they are all .006" inlet and exhaust...
best done before the car is driven first time that day...
as its supposed to be a cold engine...
You can find details on the easy way to do it at:
http://www.vw-resource.com/ 

best to have spare tappet cover gaskets too...

cheers

LEE

stifler001 - January 4th, 2012 at 04:36 PM

thanks Lee

shaihulud - January 5th, 2012 at 11:58 PM

My first VW mechanic was factory trained. He said that the inlets should be adjusted to 6 thou and the exhausts to 8 thou. The reason being that no matter how hot the engine gets, the exhaust clearance will not close up and you will never burn out an exhaust valve.

I've been doing that since 1963 and I've never had a burned out valve.

The engine will sound a little tappety, but it doesn't intrude.

I suggest 6 thou inlets and 8 thou exhausts.

1303Steve - January 6th, 2012 at 09:35 AM

Hi

VW used to recommend 4 thou years ago, I've run all my cars at 6 thou and have never had a burnt valve either.

Steve