I would like to add ACR's and while the heads are off the bike I might as well do some mild porting.

What kind of work would go well with 48H cams? Would .030 head gasket to bump up CR be a bad idea with 48's? Not trying to do anything big just want to put the best combo together.

I'm assuming ACR's will help with hot starts? Already upgraded to SE compensator but hot starts still have something to be desired.

 

I cant tell you about the head work but i can give a little about a compression release. My chainsaw has one. I know its not a bike but its still an internal combustion engine. If i forget to hit the release i can barely get it to pull. If im fully committed and do get one cycle out of it, im not getting the second. I think the release is awesome. If i think its awesome, im sure your starter will too.

 

 

Lol, watch out for burns.

 

It may actually be cheaper to get some used 103 heads already set up for ARCs and sell your heads than having your heads machined for them (S&S easy starts are another option). Either way I would think about more cam if ya are getting the heads worked. Talk to a few good head guys and listen to them.

 

 

If you're that far you could have a 103 for about $400, probably a better bang for the $ than head porting, or due both. I'd just do manual CRs should be about $200, gaskets about $100 & mild porting about $500 would make a sweet running ride.

 

I Know Not, but ….

Having my heads drilled for ACRs, the valves reseated, and new valve seals installed cost me about 5 bills. (no porting, but they installed the ACRs too.)

That does not include the wiring.

I chose ACRs because I don’t think it is cool to push on manual CRs, just cheaper, and it is not old school, just old technology.

But some are so used to manuals that it is second nature and would not have it any other way.
That is their choice and I am not knocking it.

If I were to do it again I would look at picking up a set of good 103 heads and send them off to be ported and new valves, springs, seals, etc. installed. That could be done with the bike still on the road.
(BTW, I had a problem with a weak stock spring which showed up a while after putting everything together, which is why I would suggest changing them while everything is apart.)

Just keep in mind, a lot of people have their bikes laid up for the winter and are doing similar things before riding season, so it make take a while for the heads to get back to you.


And BTW, as my friend kept pointing out to me when we pulled my heads to do the ACRs, those jugs come off real easy at that point …now I have a 107 ... Just saying.
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Ya, but why do 90% of the work amd the money for 50% of the end result.