whos doing there own bore kits? have a 2005 88ci and was thinking of bringing it to a 95ci?then a friend asked why not a 103ci? would the stock lower end hold up to that?

 

YouTube - Radical Cycle - 260 cubic inch custom motorcycle

 

You can't do a 103 without opening up the bottom end. 98" is as big as you can go with just the top end. A 103" would require a stroker crank
4 3/8".

 

thanks, thats pretty much the response i got from SE. just i can get a 98ci?any recomondations where to find these parts?

 

Splitting the cases and/or case boring are the only ways you get from 88" to 103". A stroker crank or case bore will do it and if you go to that much trouble and expense, case bore to fit 4.125" cylinders and go to 117". The power of a 117" makes it a necessity to true, balance and weld the crank. Oh yeah, while your at it you need to have the case fitted for the Timken crank bearing conversion. You are only talking about spending another $2500.

If that's too rich for your blood, have your cylinders bored to fit a set of 3.932" pistons, send your heads to Don Dorfman (Dewey's Heads) for his blue print andstreet port job, machine for compression necessary for SE204 or Andrews 37 cams, install a good fuel management system, good 2:1 exhaust and tune.

Others posted while I was typing. Above build plan will get the job done; very predictiable results 100/100 numbers; dependable build and will run forever if properly maintained and it won't break the bank However, there are other combinations; just depends on what you want and how you ride.

 

A few places offer 98 kits. GMR Performance, HQ, Tman, etc.

 

you can bore your 88 jugs to 95 and save a bunch of cash that way and still build a very strong 95 without cracking the cases.

 

what does one weigh... thats crazy a top fuel makes them numbers. that by all rights should be a 8 sec bike...

 

oh and yes you can have a 103 but would need to bore the cases and have custom pistons made.. so yes pratical way is to stroke it...

 

Might as well bore to a 98", still don't have to split the cases.