Whose heads? What pistons? Re-worked HPI TB?

If you were doing the HQ Sport Touring 107, you could expect 110-115 hp and 120-125 tq. It would use the HQ 575 cams and 10.5:1 CR.

Good luck with your project. At least a couple of guys have done this build on HDF and are very pleased with it.

 

smitty'.s out of wheeling W.V. is doing the build and head work. he had done the heads on the 95 build a couple of years ago and i believe the bike was at 98 hp and 107 torque that was with the HD fueler. now weve installed the thunder max and the fatcat and never dynoed sense.

relibilty is a must but also would like a little stump pullin power as well. the numbers like has been said don't mean alot but was just wondering what i should expect. didn't mean to start a pissin match. just lookin for some insight.

 

What's the Axtell cylinder bore that gets you to 107" with a 4" stroke like your '06 has? I don't have my displacement calculations with me here or I would figure it out on my own.

Or are you replacing your 4" stroke crank with a longer set?

Zach

Edit - Nevermind. I remembered the calculation. I'm assuming then the Axtell cylinders are 4.125"?

Displacement = Pie/4 x bore squared x stroke x # of cylinders