Engine PTV

[rockyracoon]

Im in the final stages of an engine rebuild and after checking for ptv contact I have come to the conclusion that running 4 degrees of advance is out of the question without having my pistons machined. The clay was practically cut to within a whisker of the piston and this is with the block in factory form and. the heads are pretty much brand new. Im running a tfs stage 1 can so I am surprised at the lack of clearance.

 

[90sickfox]

That was with the head gasket installed and snugged down ? Could go with a thicker head gasket to get some more clearance. It would bring the compression point down some too.

 

[Mustang5L5]

What's the combo? What heads are you running? 1.6 rocker?

 

[rockyracoon]

Yeah was with the hg snugged.
Im running 1.6 rollers. Dart heads.
Im just gonna run straight up for now.
I have heard the stage 1 cam already has 4*
of advance built in. My crank sprocket only has 3 different indexes so I can only go 4* either way.