Re: Bellhousing alignment issue
 

Thanks for all the suggestions.

At this point I am working with a local machinist to make sleeves for the block, so I can use the original RobbMc offset pins that I purchased. The main deciding factor for me was this solution allows me to keep using off the shelf offset dowel pins in the future. I can only imagine loosing a custom dowel pin and having to do this whole process over.

John

Re: Bellhousing alignment issue
 

Can you try wrapping a shim about .009" or .010" around the dowel, just enough for a snug fit, and use blue loctite so you can get it back out if needed. I drill and tap mine for 5/16 x 18 so I can take them out with a slide hammer.

Re: Bellhousing alignment issue
 

John, I've had success taking a hammer and punch to knurl the OD of the dowel pins where they interface to slightly oversized or worn holes in the block. Pretty primitive, but it was enough to tighten the pins up in my application. Not sure if it would work in your circumstance. The machined sleeves you mentioned are certainly an elegant solution.

Re: Bellhousing alignment issue
 

shim stock is available in several dimensions/thicknesses usually in .001-.0005 increments try any serious machinist supply house

Re: Bellhousing alignment issue
 

I can't remember the size and don't have any on hand at the moment,but I think the size your holes in your block are the size that they opened up to when using BHJ products fixture.
BHJ dowel true corrects dowel holes off main bores,reams holes oversize to correct position.
I always use weld on bushings,easiest way to correct,I also use BHJ dowel true and surface bell area of block square to mains.
Mike Taylor 3601

Re: Bellhousing alignment issue
 

Mike,

You hit the nail right on the head. I was able to confirm that dowel pins where setup with the BHJ dowel true. Now I need to figure out the source of the 0.014 offset.

Thanks,
John

Re: Bellhousing alignment issue
 

Thanks everyone for the help and suggestions.

The problem has been solved thanks to Chuck Norton and Jack at C.M.C. Engineering. I had sleeves made for the dowel pins holes and used the RobMc pins to align the bellhousing.

This was my first time using the Browell Alignment tool. However, I found that I like the traditional way of aligning the bellhousing over using the Browell alignment tool. To me, the traditional way is more precise. The final numbers are shown below.

http://i304.photobucket.com/albums/n...psco4uyzju.jpg

http://i304.photobucket.com/albums/n...psllw7lwyf.jpg