Lister Engine Forum
Lister Engines => Listeroid Engines => Topic started by: tyssniffen on October 19, 2019, 07:42:02 PM
-
I know there's specific numbers for the gap between the rocker arm and the valve top, and they're different for the inlet vs exhaust... but I can't find those numbers anywhere.
Can someone clue me in?
-
Hi tyssniffen
Yes I can! as long as you tell me what the brand and model of engine is.
Cheers
VP
-
sorry, thought I had a signature on there. a listeroid 6/1
-
0.008 of an inch? I thought it was bigger than that.
-
Hi tyssniffen
Take a look here: http://www.utterpower.com/lister_s.htm
Cheers
VP
-
This is from a genuine 1971 Lister manual and shows
17 thou inlet and 32 thou exhaust for the 6/1 engine
8 thou inlet and 8 thou exhaust for the 8/1 engine
(http://listerengine.com/coppermine/albums/userpics/10039/normal_Valve_clearance.jpg)
-
Hi there
Please see PDF attached which is a summary of some work by one of the "Masters" on here a while back
Briefly: Valve clearances are about (a) operating clearance and (b) valve open-and-closing timing
(b) being the thing that matters as long as there's working clearance
So see PDF? Try using the valve clearance adjustment to open the intake and close the exhaust at the degrees of rotation (timing) as per the PDF and never mind the actual clearance . . .
Others may wish to chime in?