LSPerformance

iTrader: (23)

Has anyone measured valve to bore clearance on the L92 setup? - if so, what bore size did you measure on?

Richard@WCCH

iTrader: (3)

The L92's nominal bore size is 4.00". Exactly what measurement are you searching for?

Richard

Wnts2Go10O

iTrader: (12)

i think hes thinking from the edge of the valve to the cylinder wall. dunno

LSPerformance

iTrader: (23)

Yes, valve "edge" to bore clearance @ 4.000" bore - I thought the nominal bore size for the L92 was 4.065"?

Richard@WCCH

iTrader: (3)

The valves aspect to the bore changes as it moves off the seat. The valves move toward the center of the cylinder and away from the bore edge as they leave the seat. Nearest I can tell the closest point of valve/bore distance is as follows:
The stock intake valve (2.160") leaves approx. .153" from the closest valve edge to the bore. The exhaust valve has a distance of .047" from valve edge to bore.

Hope this helps.

Richard

LSPerformance

iTrader: (23)

Richard, is this with the 1.590" exhaust? - and both measurements are on what size bore?


Thanks

Richard@WCCH

iTrader: (3)

Stock L92 valve diameters and 4.00" bore.


Richard

LSPerformance

iTrader: (23)

Thanks!

the_merv

iTrader: (88)

That's a tight clearance on that Exhaust..