Yep intro first ;)
You need to work out your long term engine upgrade goals, 103, 107, 110 and build from there.
The S&S 583 cam was what I was recommended, but with stock 110 heads, if I was staying with a fairly standard 103.
However doing the compensator and primary chain tensioner before doing any other mods, (the Timken bearing upgrade is also highly recommended) is recommended, the stock compensator will fail if HP is increased to much.
Also are you converting the cam drive to gear drive ?
Upgrading the oil pump ??
I'll let the more experienced guys weigh in, as I'm not well up on these engines yet, however I have built a lot of engines of many different designs and types, and from my research so far the items I mentioned are a must before increasing the load on them, by increasing HP, otherwise you will have problems latter on.
Cheers
Ken
Yeah about my thoughts too mate.
My first port of call will be the compensator as the stock one is a known weak point and replacing the stock primary tensioner, as they apparently over-tighten the primary chain and cause bearing failure.
Then I'll do cams, and if I can find them for a good price some 110 heads.
Good luck :)
The 110 head are too hit and miss IMO. Some are crazy good and then others are like stock 103's with huge valves and too much spring pressure.
If you find a set of CNC'd heads like some MVA's or something off a 120R jump on them, but having your stock ones ported to the cam spec best bet. Finding a set of used 103ci heads is easy and relatively cheap then you can sell yours when you swap them over so not to be off the road too long.
If you are not afraid of the aftermarket, I'd consider one of the 110ci kits from S&S or Fuel moto, combine that with some nice heads and you will have a reliable weapon.
Well good to hear that your compensator and oil pump can be left alone and should be OK as is, does that mean I can leave mine alone too fellas ?? 2013 model ??
I thought they were a weak point, and needed upgrading as did the oil pump.
See both learning something already here Lowrider :)
And good to know about the 110 heads being hit and miss too.