Piston To Intake Valve Clearance
Thread Starter
Teching In
Joined: Apr 2008
Posts: 3
Likes: 0
Piston To Intake Valve Clearance im running a stock LS1 bottom end (crank/pistons/rods) and:
comp cams - XER287HR-12 -238/240 -605,609 112LSA
trickflow 215 CNC heads
YellaTerra 1.7 adjustable rockers
my problem is with this cam installed 110deg intake center line.....
i only have 55thou piston to intake valve clearance
any suggestions/thoughts on this?....cam phasing?.....
comp cams - XER287HR-12 -238/240 -605,609 112LSA
trickflow 215 CNC heads
YellaTerra 1.7 adjustable rockers
my problem is with this cam installed 110deg intake center line.....
i only have 55thou piston to intake valve clearance
any suggestions/thoughts on this?....cam phasing?.....
im running a stock LS1 bottom end (crank/pistons/rods) and:
comp cams - XER287HR-12 -238/240 -605,609 112LSA
trickflow 215 CNC heads
YellaTerra 1.7 adjustable rockers
my problem is with this cam installed 110deg intake center line.....
i only have 55thou piston to intake valve clearance
any suggestions/thoughts on this?....cam phasing?.....
comp cams - XER287HR-12 -238/240 -605,609 112LSA
trickflow 215 CNC heads
YellaTerra 1.7 adjustable rockers
my problem is with this cam installed 110deg intake center line.....
i only have 55thou piston to intake valve clearance
any suggestions/thoughts on this?....cam phasing?.....
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TECH Senior Member
Joined: Mar 2004
Posts: 14,620
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From: BFE
many poeple running big cams run those tolerances. Ask for MS4 clearance around, it is about the same.
besides flycutting, you could also sink your valves a bit.
proper way is to flycut and mill head.
besides flycutting, you could also sink your valves a bit.
proper way is to flycut and mill head.
Thread Starter
Teching In
Joined: Apr 2008
Posts: 3
Likes: 0
thanks for the replys guys...it seems retarding the cam only compromises the exhaust valve clearance...i have tried 8,6 and 4deg retarded to check the clearances....so far 4 degrees has given me the most for both inlet and exhaust....
will try 2deg tommorow but i may end up having to fly cut as some of you have said already..
thanks,
douglas
will try 2deg tommorow but i may end up having to fly cut as some of you have said already..
thanks,
douglas
