I'm working on a JDM B20 I'm rebuilding for my brother, which came as a long block sans flywheel. In trying to remove the crank pulley, I figured I'd just bolt a bar to the other end of the crank and work on the bolt with a breaker bar like I usually do. Only one problem....the flywheel bolts for a B20 (12x1mm 12pt, HOP# 90011-PH3-000, same for all B series motors) don't fit. Turns out someone boned the crank before I got it. Of the 8 holes, I can get a bolt to thread cleanly into ONE of them. The rest...it's bad.

I figure I have 2 options...replace the crank ($$$) or try and run a cleaning tap through the holes and pray that there is enough thread down in the crank to provide the holding torque required.

Thoughts?

Pictures in the next post.

-dave


Modified by dpaton at 11:42 PM 5/24/2006


Modified by dpaton at 11:43 PM 5/24/2006

 

Wide shot of the flywheel end of my crank. Pay no attention to the fluid in the holes...it's just WD-40 I used to clean some of the grime off. Macro of one of the bolt holes.

Click to biggify.

It's worse on a few others, but the pictures didn't come out.


Modified by dpaton at 11:43 PM 5/24/2006

 

Run a rethreader through it. It should be fine. Ive done this many times.

 

I'm hoping so. Now, to find a 12x1mm cleaning tap in this joke of a suburb....

Thanks

-dave