Crankshaft Pulley - Main Bolt Size

[Bubba Bob]

What's the bolt size for the main crankshaft pulley? I can't get a damn thing to fit right.

 

[scruffy1]

It's 21 mm. Just got done doing some work that involved pulling the harmonic balancer.

 

[betomonroy]

21 MM is the head size. He needs the trhead diameter as well as the trhead count and total bolt length.

 

[cj8281]

Mine is a 1985 Ranger with the 2.3L and it came without a lot of the bolts on the front of the engine, the crankshaft pulley bolt being one of them. What I found fit mine is 14mm with 1.5 thread pitch, the one I bought today is 40mm long and threads all the way into the crank. Now to build a washer for it. I hope this helps someone out.

edit: I changed the 40mm out for the 50mm, see reply below.
edit 2: found the original bolt and washer, its 40mm long and the original washer is about 3/16" thick.

 

[Josh B]

Awesome CJ, thanks! Welcome to TRS

 

[cj8281]

I built a 1/4 inch thick washer and discovered that the 40mm bolt would only thread in a little more than a half inch so I went and bought the 50mm length bolt today. The 55mm length bolt had a longer shank and I wasn't sure if it would hit the end of the threads in the crank. The shank on the 60mm was way too long.
If anyone is interested, the washer I made it 38mm which is just under 1 1/2 inches in diameter. It fits inside the crank pulley with just a bit of clearance and is about even with the notches in the pulley.