Engine wont crank clockwise

[syrushcw]

So I did my timing belt for the new engine and it is the oddest thing it wont crank by hand clockwise, I can crank it counter clockwise with out braking the crank pulley bolt loose. I can crank the whole assembly counter clock wise 360º nothing hits. but if i move it an in counter clockwise then back clockwise it doesn't budge at all. This has me dumbfounded since it just came from said position. Any ideas?

 

[rarest_90_DsM]

from what Ive heard you should never rotate a engine the opposite was then it is supposed to turn. Do you have your spark plugs still in? is it in a compression stroke?

 

[syrushcw]

from what Ive heard you should never rotate a engine the opposite was then it is supposed to turn. Do you have your spark plugs still in? is it in a compression stroke?

No spark plugs, compression stroke? The rotating assembly is suppose to turn counter clockwise? I thought it was clockwise

 

[tkelly27]

Double check your cam timing before you do anything at all. The VFAQ should help you.

You should have 1 compression stroke every 180* of crank travel. If you can get it to go CCW 360* then smoothly back to the position it was sticking clockwise then you're hitting something mechanical.

I let a friend mill my cylinder head down one time. We accidentally swapped the intake and exhaust cams. I don't remember what it did, but it was a pain in the ass. Make sure you didn't do that.

Turning the engine CCW can cause slack to build up in the timing belt and it can skip a tooth when you go to start it. It's also not tensioned for the CCW direction, so you could skip a tooth. I've never had this happen to me, but I always check when I do it. Turning it clockwise should take up the slack.

 

[syrushcw]

I let a friend mill my cylinder head down one time. We accidentally swapped the intake and exhaust cams. I don't remember what it did, but it was a pain in the ass. Make sure you didn't do that.

I'm relatively sure I didn't do that but I'll triple check since it worked on my other block i just unbolted the head and put it on the new block with out taking the camshafts, timing marks look good I made sure 3 times I didn't put on the crankshaft sensor plate backwards <-- that's what i originally thought the problem was

 

[haswesley]

Is the car in gear and at least 3 tires on the ground? Maybe your trying to move the whole car by turning the crankshaft pulley.

 

[syrushcw]

Is the car in gear and at least 3 tires on the ground? Maybe your trying to move the whole car by turning the crankshaft pulley.

Not in the car and no tranny attached

 

[ziggo0]

Check your timing job as stated. Both cams should have the pin at 12 o clock and cyl 1 at TDC. This will make sure valves won't be causing the piston's to not travel.

 

[Jiggalude]

It is relatively hard to do though with the spark plugs in. You have all that air built up into the cylinders it can be a lot harder to turn it than you might think.

 

[syrushcw]

Well I took the timing belt off an isolated the problem the balance shaft wont turn clockwise i unbolted it loosened it took it off back on took off the oil pan IDK it wont turn clockwise

 

[ziggo0]

Time to delete the balance shafts!