Crank support question....

Those of you running a crank support - do you happen top know exactly what kind of bearing is used? Here's what I've got: I run a 2.3 Ford turbo and was having issues with the fuel pump drive causing the crank trigger sensor to rub the trigger wheel with .025" gap. I then built a crank support and used an arbor on the damper that went through a 30mm i.d. ball bearing in the end plate. This is where my fuel pump drive is now mounted.

The bearing was just sourced from an industrial supply store, all I could find was a single ball bearing in the dimensions I needed. Max rated RPM on the bearing was about 10-11000 and I only turn mine to 8500. Figured that would be sufficient.

The first year it worked fine, no more deflection. The second year (last season) I mysteriously developed a problem with the -10 AN fitting on the pump outlet loosening up. I've tightened it as far as possible, replaced the fittings, even clamped a vise grip to the fitting and it still loosened up and melted my head in the process. This is only on the outlet side that it happens.

The bearing feels all right turning it by hand but I wonder if it is vibrating at speed enough to cause this issue? Before I run it this year I'd like to find if there is a better bearing available unless someone has any better ideas?

Thanks.

 

We run RCD one (big block chevy)

Just looked on site and bearing says...

50 X 90 X 20 BALL BRG DBL SEAL

Not sure on setup though can you post photo?