An Oil Cooler Mounting Problem

[Bookwus]

Hiya All,

So, I'm working on converting a newly built AutoStick Type 1 engine for use in my Bus. I have all the switchover stuff done but I've run into a problem with the oil cooler.

Doghouse set-up with the cast adaptor flange. New aluminum case. The protruding stud (top of case) to secure the oil cooler adaptor is too short. When the adaptor flange is mounted in place the stud only comes up even with the top of the adaptor casting.

So, I thought I'd remove the stud (used the double nut approach) and replace it with something longer. That little sucker does not want to budge at all. I'm thinking there could be some Locktite involved here. I don't really want to destroy the stud to get it out and I'm a little nervous about reefing on this thing since the threads in an aluminum case might gall. Any ideas, or do I worry too much?

Something else......this stud is for a 10 mm nut. On my other cases (VW) this stud works with a 13 mm. What's up with that? And, did VW ever use a Type 1 oil cooler adaptor that was engineered to work with the 10 mm set-up instead of 13 mm?

 

[cyberdyne systems]

Your right about how the stud is fixed, so it should be able to be removed. It sounds like you'll need to tap a larger thread to put a bigger stud in. I suppose you could just fit a longer stud in the thread you already have though.

Gareth

 

[Bookwus]

Hiya Gareth,

Thanks for the reply.

I did get the stud out. Mr. Vice Grips to the rescue.

Turns out that this was a step-down stud (8mm to 6mm). And the outboard mounting holes for the oil cooler had inserts in them. So, I'm thinking that this case was set up for a non-doghouse style oil cooler.

In any event, that's all been changed out now (yep, I just replaced the step-down stud with an 8mm) and the doghouse oil cooler is in place.