Stroke or bore?

[cannondalerhino]

I have a timbo stroker with stock bore,hot cams and kibblewhite springs. this thiong is a monster. I ride mx and it pulls 13-39 gears like mad!and i can lug 4th in the turns

[chigger81]

QUOTE

Originally posted by jesshamner
If you're needing a key, a yamaha dealership should have one.  If you already have one, you know where to get the next one.

Thanks, that is handy to know. I got the measurements from timbo and ground a standard one down to fit this morning. lol

[theJeStEr1340]

QUOTE

Originally posted by cannondalerhino
I have a timbo stroker with stock bore,hot cams and kibblewhite springs. this thiong is a monster. I ride mx and it pulls 13-39 gears like mad!and i can lug 4th in the turns

think it would pull a 15-41?

[Cdale_racer_669]

Farrar runs 15/39 gearing with his timbo stroker:head:

[Jaybr]

QUOTE

Originally posted by theJeStEr1340
think it would pull a 15-41?

Yes

I'm running 14-38 (same ratio) on my Falicon quad and it pulls it fine. Even pulled fine with 20" paddles at Glamis.

[theJeStEr1340]

Good, I wil probably only run 18in tires seeing as I put a moto axle and a +2 frotn end on my bike, I don't fit through the trees like I used too.

[theJeStEr1340]

I have another question, do we have to use a different piston, or can we stick with our stocker on the stroked cranks?

And can you still run pump gas with a timbo stroker?

[jesshamner]

Yes you can stroke it and still use the stock piston.

[kdeal]

QUOTE

Originally posted by theJeStEr1340
I have another question, do we have to use a different piston, or can we stick with our stocker on the stroked cranks?

And can you still run pump gas with a timbo stroker?

Timbo mills the top of the piston to gain the needed clearance for you. You can even state fuel requirements (race fuel or pump gas).