This was found today by Harley. The thing that pisses me off is I have had an indy dealer in my primary 5 times over the past year and they have never mentioned this. The last time was under 200 miles ago and I do not think this could be that big in under 200 miles.

Any ides, past experiences?

 

first time i seen that ive seen them crack between the jugs my dads did like 2 years ago alittle jb weld on the inside fixed it for now

 

Common common issue.
Can be caused during assembly, or by movement during operation.
Especially on early dyna, and the inner primary is relied upon to provide support.
A torque brace can help.

 

Totally agree.....in fact, a '92 Dyna I once owned cracked in the exact same place. However, my current '98 Low Rider with maybe 25,000 miles has never cracked. Maybe something changed on the early Dynas compared to the last EVO Dyna models.

 

I am by no means an expert on Evo case, but I can tell you this, I have never been in my local Indy shop and NOT seen a set of Evo cases on his bench getting welded and machined for that exact issue.

 

Yep my buddy had two sets of cases sitting on the floor cracked in exact same place and he definately wasn't too concerned.

 

Time to go to a belt primary you don't need that o'ring grove for a good belt system

 

I had a cracked engine case/6" hairline according to my mechanic on my '91 FLHS with 65K mi. It has been cracked for years and got worse this season and went from 1-2" to 6". He put some kind of glue or adhesive on it recently and it still poured oil out so I went to a Rivera Primo Brute III primary belt set up and no more leak. I never did ask if it was ok to run with that cracked case? Is it in a structural area that could fail and cause other problems?

 

No this is not structural point It is strictly to hold the O'ring in position for a seal on the orig oil bath /chain primary

 

Thanks. I guess I assumed my mechanic would have mentioned it or just didn't think about it I was so distracted with the new primary belt drive change over.