Technically it's the rocker shaft hitting the rocker tower bolts..

I really don't see anything wrong with going to a 95 ci motor. IIRC the HD cast pistons are a bit cheaper than 98 ci as the 98s are typically forged. Don't know if you can still get the SE pistons tho..

BTW WFO larry can get you good KB forged pistons 0.040 over 95 for a good price. You can get them along with the new lifters.. Not sure KB is doing 98s yet..

 

06 dyna don't have outer cam bearings..

 

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Max is right; my terminology is wrong but visit the Rocker Locker website to understand the issue.

I don't see anything wrong with a 95" motor but why, when an extra 3" is almost free? CP has a variety of pistons for the 98" configuration; flat top and domed.

 

I first did 98" nikal sil. Would not do it again. After 50k it had scaring, and the cost to replate is about the cost of new. So I bored orginally over to 95". When they get worn it will be cheap to bore.010 over. I did it over the winter, so if there is a diffrence, I can't tell. Maybe it I drove them back to back.

IMO bore 88, to whatever you choose, is a great option. Non epa has more power than many factory bikes. 95" is tried and true.

Its cheaper to bore stock too.

 

Boring to 98" was not your problem; nikasil was the problem and many experienced the same thing.; the fad didn't last long. 98" is also tried and true. Been around for at least 10 years IIRC and all the naysayers have been proven wrong.

"Cheaper to bore stock"? What does that mean?

No disrespect intended and I agree that the OP can make his own choice but I just don't see any downside to bore to 98 as you seem to. JMHO.

 

So no outer cam bearings on my dyna just inners? So if the 98” is just as reliable and proven as the 95” with more hp I might as well just go that route then. I read a bunch about the 95” being best bang for the buck so that’s why I originally wanted to go that route. I definitely will look further into the rocker lockers and check out that website

 

My first build was nikal sil 98". It was to expensive to replate. So I bored stock cyilnders to 95" This give plenty of meat to bore again.

I didn't want to bore over 95". Though I realize people do it now, and as acceptable, I guess.

 

I have not had a hydraullic apart. But isn't there the needle bearings at the end of the cam, as it goes into the block, and front and rear cam bearins in the cam plate?