z400 big bore kit
#1
im lookin at buyin a wiseco 440 big bore kit for my Z.......has anyone had any problems with these?? is it worth the money? are there other things that can deliver more bang for the buck?!
#5
JUST THE PISTON IS NOT A KIT AND JUST THE PISTON WILL HARDLY MAKE A DIFFERENCE. Sorry about the caps. To get power out of a motor you need to make it breath. I would recmoned doing a set of cams and an ignition rather then a piston. Then if that is not enough then do a big bore and carb. That is where its going to make a difference. I would recomend a prt job if you do a big bore since the motor will be apart anyway if you have the money a set of larger valves. Then you could do a clutch ect ect ect. Oh damn then you end up with my motor lol.
#6
I have the yoshi. bigbore wich is a 450cc beast. I was at silver lake dunes over the weekend shooten up some sand hills aswell as drag racing on the beach front of lake michagan. I raced a banshe with dc pipes, a yfz-450 stock, and a modded yfz-450. No problem at all, especially after 2nd gear i was smoken. i love this kit.
#7
hey MURDR, how much $$$ did it take to get 450, it doesnt sound like it would make much of a difference compared to 440, but im just wondering...
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#9
Well im sure that 10cc makes a differance some where on the power pand, going threw yoshi set me back 1900.00 , but that includes, piston change, big bore, rebalance the crank, new clutches, new bearings, two titanuim valves, ported and polished, along with smaller springs in the clutch basket to add 2 rmz clutch discs(i forget what there called) and stronger driven plates for n02. oh, ya that includes labor. I saved a little money by being out of state, i didnt have to pay taxes.
#10
the 440 revs faster then the 450 yoshi kit. I also have the friend that has the yoshi kit in his kawasaki kfx the power is different on both the 440 revs faster and pulls better up high. The 450 is easier to ride. So yes the 450 is different then the 440 yeah the 10 cc is huge lol. Both can give power gains you could always half a$$ your motor and do nitrous.


