Well this happened today
truckdoug if you read my post above, you can see that Comp posts TDC clearance values based on intake centerline. That's TDC between the exhaust valve closing (end of exhaust event) and intake valve opening (beginning of intake event). While you are correct that the intake valve is closing while the piston is coming back up (starting the compression event) it should not be anywhere near the open intake valves, else there would not be any compression.
Since the OP does not know where the cam is installed, we don't know if it is too advanced. In the example above, four degrees advance translated to 0.028 less clearance. I whole heartedly agree that measuring PTV clearance with clay or with a dial indicator and checking springs would be highly recommended with a cam of this duration.
Since the OP does not know where the cam is installed, we don't know if it is too advanced. In the example above, four degrees advance translated to 0.028 less clearance. I whole heartedly agree that measuring PTV clearance with clay or with a dial indicator and checking springs would be highly recommended with a cam of this duration.
