Overbore sizes (700+?)

[SMF]

ok, so i'm curious, i've heard if we go bigger than 700cc's bad things happen. what is the limit for overbore on a race-hawk? can you go bigger than 700 and still run it reliably? (reliably = complete teardown once a season, 8 race weekends).

i'd guess this is really a question for JD, but if anyone else knows chime in

(sorry, not looking for speculation unless you've been in big hawk motors a _lot_)

[SMF]

this might be important as well: figure 2 races/weekend and 4 15min practice sessions. there might be the odd trackday thrown in but that's rare.

looks like about 12hrs of time if i did the calculation correctly (wow... i just realized how expensive this sport is!)

[Doc]

If you go bigger it wiil frag quicker than a Ducati motor. :twofinger:

[SMF]

If you go bigger it wiil frag quicker than a Ducati motor. :twofinger:

(sorry, not looking for speculation unless you've been in big hawk motors a _lot_)

I know you bought a Ducati, and Ducati people are supposedly like harley people when it comes to loyalty, etc, but I assumed unlike harley people you can read... guess I was wrong



Mod edit.

[MrDude_1]

If you go bigger it wiil frag quicker than a Ducati motor. :twofinger:

(sorry, not looking for speculation unless you've been in big hawk motors a _lot_)

I know you bought a ducati, and ducati ppl are supposedly like harley ppl when it comes to loyalty, etc, but I assumed unlike harley ppl they could read... guess I was wrong

hey! harley people can read..... hell, you have to be a doctor or a lawyer to be able to afford one made this decade

[jaysun0ne]

If you go bigger it wiil frag quicker than a Ducati motor. :twofinger:

(sorry, not looking for speculation unless you've been in big hawk motors a _lot_)

I know you bought a ducati, and ducati people are supposedly like harley people when it comes to loyalty, etc, but I assumed unlike harley people they can read... guess I was wrong

[Doc]

If you go bigger it wiil frag quicker than a Ducati motor. :twofinger:

(sorry, not looking for speculation unless you've been in big hawk motors a _lot_)

I know you bought a ducati, and ducati people are supposedly like harley people when it comes to loyalty, etc, but I assumed unlike harley people they can read... guess I was wrong

I sooooo saw this coming I READ IT!!

For the record. I had a Ducati BEFORE I had a Hawk. I STILL have a Hawk.
I have NOT been in the motor. Yours WILL blow up if you go bigger (since you keep telling me mine will)

Why do you need BIGGER anyway? Afraid of the big Bad DUC. muhuhaha!

[SMF]

Why do you need BIGGER anyway? Afraid of the big Bad DUC. muhuhaha!

I'm american, bigger is better!!

seriously though, i now have 2 motors and am wondering what to do with the stocker

...now bump already and play w/ the fast guys

[Doc]

If your going, I'm going... Your not leavin me all alone in Novice.

I don't think I can Bump until next year...

Can't Hurt to ask though.

[fabitappi]

Thiele Motors here in Germany offer big bore up to 840ccm

[nt650hawk]

Thiele Motors here in Germany offer big bore up to 840ccm

[Hordpower]

There's no "easy" way to go more than 700cc on a Hawk. You can, but it takes custom pistons, sleeving the cylinders, boring cases, etc. The 840cc thing is 750cc Africa Twin based.

[MrDude_1]

There's no "easy" way to go more than 700cc on a Hawk. You can, but it takes custom pistons, sleeving the cylinders, boring cases, etc. The 840cc thing is 750cc Africa Twin based.

and isnt that still hampered by the same "break the crank at high power" problem the stock hawk bottom ends have?

i mean, yea, you'll have more torque getting there, but if it still breaks the crank...

[Hordpower]

Yup. That's what I always argue with people about. They want 750 kits and this and that, but if we can create crank-busting power with 700cc or hell even 663cc's, then what is the point? More torque? That's even harder on the crank.

[MrDude_1]

Yup. That's what I always argue with people about. They want 750 kits and this and that, but if we can create crank-busting power with 700cc or hell even 663cc's, then what is the point? More torque? That's even harder on the crank.

thats why i keep looking at diffrent bike motors.
i want a vtwin.
i want to keep the hawk chassis.

i dont mind welding and such... but i want the RIGHT motor for it.


so far, im not having much luck finding what im looking for...