ok so im going to be swapn my tc88 for a big motor...... I really wanted a 120r but ive been told they wont fit .......... what is the best bang for the buck ?????

 

S&S make a twin cam 124" that bolts straight into the 99 frame. Get the catalogue at sscycle.com

I had a 1997 king and I can tell you for a fact that this 124 motor in the 99 frame would be bordering on suicide without some serious brakes, suspension upgrades and a stabiliser. A wide rear tyre might be a good idea too.

If you were being sensible you would go for a 98" S&S motor. You will live longer.

 

you can get a a S&S T-111 with a three year warranty for a decent price (you will have to call a lot of vendors) -- do not much about JIMs; they had some problems years ago but I think they have been corrected

 

+1 on what KingKingKing said. Needs serious brake and suspension upgrade unless it's a show only bike. The '99 swing arm woudn't stand up to all that torque and horsepower as that's a weak point on it.

 

I made do with an S&S 107 in my old Evo (replaced by the 111"), but have replaced my swingarm and rear wheel with 2007 parts. I also have a True-Track stabilizer, 13" front rotors and 6-pot calipers. R&R make a nice little 131" billet motor that will bolt right in. Above that the frame needs some serious work to get in the taller rear cylinder.

 

ok so a 110 would be more reasonable....... what will i need to do to swap the swingarm or what parts are needed to strengthen up the rear

 

You can build your stock motor to 120 cu. in. or even larger with flywheels, and boring the cases for larger cylinders. That way you can choose the cams and headwork and still have your stock case numbers. I know two guys with JIMS 120s. From their experiences, and they're both excellent wrenches, JIMS makes great tools. Motors? A little to be desired.

 

To swap the swingarm you will need a 2002 to 2007 swingarm, preferably with complete wheel, axle and brake caliper, plus a swingarm bushing kit to adapt your 5/8" diameter swingarm axle to fit the different design of swingarm bushing. My thread covers the swap in greater detail, as it unfolded. It is essentially a bolt-up job, once you have assembled all the necessary parts.

 

any other suggestions?

 

I've looked at bigger engines and I reckon you've covered all options here:

1. pay a specialist to rebuild your motor to whichever size/budget you prefer,
2. build a bigger motor from off-the-shelf parts,
3. buy a ready-built bolt-in motor.

Ain't much left you can do except make your choice! At times like this I find a spreadsheet with detailed options can help, but you should get out there and put in some leg-work. There are engine builders who sponsor HDF you could talk to, and I mean pick up the phone or visit, plus you may have some where you live? But essentially you've asked us an open question, so you need to start reducing the options, not ask us for more!