BIG BORE KITS!!!

[adam4by4]

Which one do you have and was it worth it? Please chime in everyone! Also what was the price after all parts/machining needed? I got about $850 to blow on a kit I ordered one yesterday but the place said 8 weeks for turn around. I could build a steam engine with the same power in that amount of time!(joke) Also what have you beat in a drag race after the kit was installed?

 

[boxhead]

All you need is a cam, piston, springs, gaskets. Even with the bore job it shouldn't be near to the amount of money you can spend. A wet nitrous kit runs for 550 on the other hand, much more bang for the buck!!! ;D ;D ;D

 

[imtarnished]

►366cc Big Bore Kit

Includes piston, rings, pin & clips
$185

►435cc/446cc Big Bore Stroker Kit

Includes piston, rings, pin & clips, sleeve, head gasket and stroked crank.

(Strokercrank is on customer's core)
$649

►Cam (*=exchange on stock cam)
$165*

►Valve Springs
$95

►Clutch Springs
$20

►Oil Cooler kit
$95

Those are the current prices from the Four Stroke Tech website on thier strokers/big bore kits, check them out.
http://www.fourstroketech.net/
I'm not sure if the 446 kit would be up for the rigors of a wet shot, or any even a dry shot (if they are available) of nitrous. But undoubtably the 446 kit would yeild some big results, not sure how it would stack up to a shot of nitrous though...
~Bill

 

[boxhead]

The problem with strokers is they don't rev up nearly as quickly and they tend to not like going much over 9000 revs. That's why I would rather build the motor as tough as I can with the stock bore and run a larger shot of nitrous. With the nos you'll get a **** ton of torque and the motor will rev through gears about as fast as you can shift. My friend is running the dry boondocker on his z and he can't keep the front end down with his weight over the bars. The wet kits such as the NX one hit much harder and are a bit safer as well. Many of the trails I ride are fairly tight so I want the power to be there only when I want it, such as on hillclimbs and long straights, that's why I went down this road. A sleeper motor is a nice thing to have. The 400 strokers out there don't even need a new clutch, so unless you have quite a bit of wear on it I wouldn't bother to spend the money on it.

 

[yamarider]

I've been toying around with the nitrous idea for a while, but what do you do to get your bottles filled up? I know most drag strips have filling stations, but there's none close to me since the last one closed.

 

[adam4by4]

Look for any high performance store for parts they will have or know someone close that has it!

 

[adam4by4]

What about the alba 400 kit?? And if I order a kit does the cylinder need to be bored or do I need to have the piston resleved or is it the stroked crank that the extra displacement comes from?

 

[boxhead]

It's a bore and stroke, I don't believe they resleeve the cylinder.