ah1988ford
Full Access Member
does anyone know the valve to piston clearance for the 6.9? I have the 6.9 service manual supplement and it does not give the specs for that.
valve to piston clearence?
- Thread starter ah1988ford
- Start date
IDIBRONCO
IDIBRONCO
I've been told that Typ4 said that you want a minimum of .030" clearance. I believe this goes for either the 6.9 or the 7.3. If it helps, the Fel-Pro head gaskets are .010" thicker than the Victor Reinz. I measured this at both compressed and out of the box thickness.
onetonjohn
Full Access Member
Tom posted some specs about halfway down on page 3. I don't know how to link to the post, but here's a link to the thread.
https://www.oilburners.net/threads/new-user-with-2-1986-f350s.82511/page-3
https://www.oilburners.net/threads/new-user-with-2-1986-f350s.82511/page-3
Macrobb
Full Access Member
It's specced as valve recession, and piston protrusion. Stuff you can measure easily.
It's actually hard to measure valve-to-piston clearance - not only do you need to assemble the head on the block, but you have to take into account the hydraulic lifters(which will take up the slack, and be at part lift with the engine running). Without an adjustable "solid" lifter for manually taking up the slack, you can't really do the job.
It's actually hard to measure valve-to-piston clearance - not only do you need to assemble the head on the block, but you have to take into account the hydraulic lifters(which will take up the slack, and be at part lift with the engine running). Without an adjustable "solid" lifter for manually taking up the slack, you can't really do the job.
Similar threads
