Looking...U/D pulley recommendations

[flaps10]

Originally Posted by steved0x

snip

For cutting the boss (which was the hardest part, but for you it will be much easier with the engine out) I taped all around it with blue painter's tape, especially covering the crank pulley area, to keep any shavings out.

Steve

Hold the phone. Installing a UDP requires grinding off a boss from the crankcase? If so, is this the boss used for locking the engine at TDC and for use when rebuilding the engine?

If so it's "oh hell no" for me.

[steved0x]

Originally Posted by flaps10

Hold the phone. Installing a UDP requires grinding off a boss from the crankcase? If so, is this the boss used for locking the engine at TDC and for use when rebuilding the engine?

If so it's "oh hell no" for me.

That is correct, that boss is used as one method for locking the engine at TDC (although I can't name another off the top of my head). There is still enough left of the hole to lock the engine at TDC again if the original pulley was reinstalled, but when the UDP is on, that boss is blocked by the edge of the pulley and can't be used.