Timing Gears Advice/advice

[Sam686]

So im doing a h/c/i swap.95 mustang gt. Just got to get the front end put together. Heads are on cam is in. just wanted to make sure all i have to do for the timing chain and gears is to line up the dots and im good to go? I did rotate the crank after i took off my timing chain...is there anyway this couldve messed something up? Also when the crank key is facing up should #1 be at or near the top? Im new to cam and timing chains so any input would be great. Thanks

 

[Donamometer]

Sam your good , no problems with what you did. When number 1 piston is up so is the opposite one in the firing order. the cam selects which cylinder is on compression (or ready to fire). sorry I haven't done a cam chain on a 5.0 since I worked a roush. but the crank and the cam gears often have a dot on them. the crank can stay in the up position and the cam can be pointing down or up without moving the crank the compression cylinder will change from #1 to the opposite in the firing order. hope that helps.

 

[jozsefsz]

The alignment dot on the cam goes on the bottom, and on the crank the dot / keyway goes on the top. This should put you in #1 at tdc on the compression stroke. So yes #1 should be near the top. I swear half the time I end up 180 degrees out anyways.

 

[Moosee1955]

The cam and crank marks face each other on 5.0 motors .i usually take out # 1 plug use lower pulley crank motor till you feel piston touch screwdriver. Move back an forth a tiny bit both directions till your sure it's Tdc. Your lower pulley jetway will be at 12:00. Easy peesy. Cam mark will be at 6:00. Pretty hard to mess up.


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[Moosee1955]

Sorry meant key way, should proof my sentence.


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[Sam686]

Well i aligned the marks and got the front end back together but as i was installing my pedestal rrs i was cranking the engine (clockwise) to bolt them down and heard a pretty loud ping sound on #4 i stopped and tried googling this but didnt find anything. I proceeded again and heard the same noise on #5?! It doesnt happen consistently. Did i just bend my valves?

 

[jozsefsz]

No idea, but it's important to check piston-to-valve clearances when installing new heads or pistons or both. If you don't find another source for the noise, the valves just might be making contact with the pistons. You might want to remove and inspect before further damage occurs.