Sanity Check on 348 Cam Timing

I made some longer pins and used smaller washers so I could easily remove them and rotate the cam (by inserting the pin in the next closest hole). Once it's lined up insert the orig pins and washers of course. If there isn't a hole that will work, the only choice that I know of is to remove belt and re-located the cam pulley.
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Your have the pins and belt cogs to pick from for timing adjustment. If you can manage what you need with the pins then just spin the cam and line up the pin you want. If you need to jump a cog then pull the tensioner back, lock it down so the belt is loose, secure the belt on the cams you don't want to adjust, adjust the gear, then let the belt go and recheck everything. Repeat until your happy. I'm unsure which direction you need to go as it becomes evident with adjustment in the correct or incorrect direction.

 

What crank degree is the exhaust valve opening at, and what are you trying to set it to? Basically what are your timing specs, int & exh?

Without actually seeing your cam in motion this is just a guess.....the dowel on the 1-4 exhaust pulley would get removed, then I would rotate the the crank counter clockwise. This should cause the exhaust cam to "catch up". Dowel back in, cam pulley bolt back in, then I would turn the crank clockwise at lease four full rotations and recheck.

I don't see why you'd need to remove the tensioner, but you may need to remove the cam belt.

 

To hold the tensioner in place there was a set screw hole drilled into my tensioner housing. The tensioner gets compressed and then the set screw holds it int the compressed state. Belt removed/replace and set screw loosened.

If I am visualized what you are saying correct, you'll need to remove the dowel on the exhaust cam, hold the exhaust cam in place, with the belt still in place on all the pulleys, then SLOWLEY rotate the engine counter clockwise 1-2 pulley holes (or as needed). With the exhaust cam being held in place and the engine rotated backwards it allows the pulley to "catch up" to the other pulleys because it will spin "freely" on the cam.

Give it a try and you'll understand a little better.

 

No, no, no, no, no no.

Line up the three GOOD cams that line up on the marks. Now pull the dowel/pin from the cam that is retarded. Lock the retarded cam in place. With the pin out of the retarded cam pulley rotate the engine COUNTER clockwise 1-2 pulley holes as needed. Replace the pin in the cam, and the retaining pulley bolt. Rotate the engine CLOCKwise at lease four full rotations, and recheck the timing.

 

I don't do any of that. There is a detent on the cam shaft. It holds the pully on the shaft even if the belts are tensioned and camshaft retaining bolt is out. I move the out of wack cam shaft re-pin it, then confirm cam timing.

 

BINGO!