installing tbelt and bent valves

[BLOHS7844]

When installing a timing belt, I had the cam marks pretty much lined up (both could have been turned in just a hair) and I was rotating the crankshaft so to line up that mark. It got kinda hard to rotate it (no spark plugs so no compression) and it made a weird noise, somewhat like a scraping noise. Is it possible that I bent some valves?

 

[bryanwheat]

When it got hard did you force it?

 

[BLOHS7844]

yes and no. It did get harder but it was something that didn't take much force. Maybe 20ft/lbs? That is a very rough estimate btw. It was noticeably harder than it was before that

When I turned one of the camshafts a quarter turn I was able to continuously rotate the crankshaft easily

 

[BLOHS7844]

I would think it would take a hell of a lot to bend valves, thinking about it. I may have just been pushing the camshaft but idk

 

[rlacasse1]

I doubt that you messed anything up.

Did this happen right as you were getting the mark lined up?

 

[punxnotdead185]

Yeah I've done the same thing and never bent valves before so as long as you weren't cranking on it real hard I'd say you're probably fine.

 

[92AWDHX40]

Can you turn the crank over if you can you should be ok, youll know more when you start the car.

 

[BLOHS7844]

well if I did bend valves im beyond ####ed so were just gonna assume I didn't

 

[JayB12]

When my cam timing marks looked a hair off it was when my dowel pins for the cam were facing down, they looked perfectly strait with them up. Make sure you didn't time it 180* out, but I don't know if that would effect the valve clearances.

You can also do a garage leak-down test with a compression tester fitting and regulated air to check for bent valves.

 

[BLOHS7844]

I didn't even check the dowel pins....