Supra Forums banner
1 - 1 of 1 Posts

·
Registered
Joined
·
523 Posts
That is disconcerting. It looks like it's forming a T. If under pressure it completes the circle, it could come off or leak at the O-ring. It might be informative to see how deep the bolt threads go when it's bolted down using a caliper or a hook at the end of a piece of wire and compare it to the bolt length to the sealing washer. I don't remember there being a torque spec for that bolt but I wouldn't be enthusiastic about over tightening it next time. Cast-iron doesn't give you many welding options and since it's oil soaked. Not sure if JB weld or Permatex Ultra Black Silicone will stick. There looks to be some threads beyond the lateral crack. If you could extend the bolt or get a longer bolt to use all the threads the current one may not using without hitting bottom, that then might be your best choice. Shaving a few millimeters off the top of the housing for instance without weakening it unduly if you're not using all the threads there are. These are desperate measures to be sure. Oil flow direction is into the center hole, if that is of any help.

Upon reflection, I recommend screwing in the bolt alone to see if you can get past the damaged area. The casting may be sprung out and not allow bolt to go further than the lateral crack. If you had the correct size tap and a die that would be even better to chase it first. Just be sure and collect any shavings with a magnet and or plug the bottom of the hole with a bit of cloth.
 
1 - 1 of 1 Posts
Top