TR2/3/3A Degree Reground Camshaft

[tallguylittlecar]

I am in the process of Degreeing the reground camshaft I got from TS Imported and I have a few questoins.
The information that came with the card is as follows:

TR Torque cam specs
intake - opens 20 degrees BTDC; closes 60 degrees ABDC
Exhaust - opens 60 degrees BBDC; closes 20 degrees ATDC
Checking Clearance is .010"
Cam lift - .290", duration is 260 degrees, 110 degrees centerline

I have found the True TDC using a piston stop, and now I need to dial in the cam. I just want to make sure I am doing and reading this information correctly. The way I read this I should be at 20 degrees BTDC with my number two push rod reading .010 of lift off my dial indicator. Any help or advice is much appreciated. I want to make sure that this is %100 percent correct before I go any further.

Thanks,
Derek

 

[CJD]

That is correct, Derek. All measurements on your cam will be at .010" cam lift...so at the lifter or pushrod.

 

[dklawson]

I found the cam timing information supplied by TSI a bit confusing when I was rebuilding our GT6's engine. The other way you can check the timing is to use the 110 degree center angle mentioned at the end of the cam card. With a degree wheel accurately positioned on the crank, you should find the max lift on intake #1 at 110 degrees after TDC. Since you appear to have already set the cam based on the 0.010" at the checking angle, finding max lift at 110 degrees after TDC would just be a method to confirm your work. Remember to always/only turn the engine in its normal direction of rotation to remove slack and backlash in the timing chain components while you are making the measurements.