To start off I have a 07 street Bob with the 96 motor. A buddy of mine upgraded his 2014 Dyna to a 110 so he wants to sell me his stock 103 top end and I could get a deal on it. Question is would it be worth the work going from the 96 to 103? Of course I would go ahead and change my cams to get more torque out of the deal. Just curious if anybody has done it on there Dyna before I go spending money on all the parts and a tuner. Thanks

 

Unless you're getting his stuff for 200 or less you would be better off doing a 107 with your own parts or go right to 110 from boardtracker.com @ $950 Far more and better cam options at 107 or 110 as well assuming the plan is to leave heads alone

 

This^

 

The only benefit to this are the acr's in the 103 heads. Your going with new cams. Have to get the cylinders at looked at with rings and at least a hone. Like dave said it would have to be a pretty low dollar transaction to make it worth it.

 

Go 107".just taking used parts & putting them on your bike with a ball hone is a crap shoot to weather your going to have a oil consuming nightmare,and pistons are set to such tight tolerances,that any fixed honing will most likely put them over spec

 

Thanks for the advice. Yeah I think he was wanting to try and get around 500 for all his parts. I'm sure I will just end up going 107

 

It would bump your compression up a bit and you could put the .030 Cometic gasket in to get a bit more, but it looks like you would go from around 9.3:1 to 10.1:1 so it doesn't seem to be worth it. You could get new pistons with higher compression and the boring to 107 for about the same money.

 

I paid $300 bucks for my 103 heads pistons and jugs, with 15,000 miles. Checked the valves for leakage, all good, honed the cylinders, new rings, new ACRs, because I didn't get them with the motor. .030 head gaskets SE204 cams. Plus 30/70 sprockets. It moves nice.