3.0 liter Camshaft Gear doesn't have Timing Mark!

[1992 Bayliner]

I'm replacing my 1992 115 HP 3.0L Mercruiser block due to water freeze damage. I hastily pulled out the camshaft out of the old block before checking for a timing mark on the fiber camshaft timing gear. I never saw one without any mark like this factory installed one.
Now I'm installing it in my new block and I think I have it right. How can I be sure? When the crankshaft gear mark is lined up in the best fitting camshaft teeth, the mounting holes for the camshaft is exactly centered.
Seems right, any ideas?
Thanks, Herb

 

[Don S]

Re: 3.0 liter Camshaft Gear doesn't have Timing Mark!

If you don't have a mark on the cam gear, replace it. Having some holes centered is not mentioned in any manual as a way to set the crank and cam gear timing.

 

[zbnutcase]

Re: 3.0 liter Camshaft Gear doesn't have Timing Mark!

I agree-replace it with aluminum one. 'nutcase

 

[havasuboatman]

Re: 3.0 liter Camshaft Gear doesn't have Timing Mark!

You are putting used parts into a new block? Are you using new camshaft bearings? they cannot be removed and re installed.
You are talking about a 17 year old motor. What you should be doing is a rebuild. That includs new cam, lifters, everything. This is a no brainer, Herb.
Build a new motor, not a rattle trap.