Diesel sound normal for M20?

[LJ851]

Why can it not be the same?

When you set it at the valve the rocker is in firm contact with the cam, same thing happens if you set it at the cam, the rocker is firmly pressed against the valve.

Science!

It is different because the rocker arm has a ratio. A given clearance at the valve is greater than at the cam.

A non ratio (one to one) rocker would act as you describe.


Science back at ya!

[Cletonius]

It is different because the rocker arm has a ratio. A given clearance at the valve is greater than at the cam.

A non ratio (one to one) rocker would act as you describe.


Science back at ya!

Oh snap. I dunno man, been adjusting mine at the cam and my car runs quiet and smooth :dunno:

[LJ851]

Oh snap. I dunno man, been adjusting mine at the cam and my car runs quiet and smooth :dunno:

On the m20 it is not a huge ratio, don't quote me but i think the clearance difference between ends is only .001 or .002 inches.


I was mainly posting just to point out you were wrong. :p

It's easier to visualize on a rocker (lever) that has a large ratio, like 5 to 1.

[BROKINBIMMER]

Also, it appears that there is no flex-pipe on the rear downpipe. Looks like someone removed it and welded a pipe in its place, is this a potential problem?

[TSI]

My gf's has the same noise problem. I've been told it's the sound of sticking rockers, but you never know...

[paperplane94]

some talk of a ratio here:

http://www.r3vlimited.com/board/showthread.php?t=267299&page=2

[paperplane94]

^ Do it!