bore kit?

[ethan]

what is a good big bore kit for alot of power and comes ported and with head. i would like somthing over at least 400cc

[jbooker82]

I will be running 66mm blaster pistons, with a 4 mill long rod crank at 400cc. Had the cylinders resleeved starting out at 66mm and can go all the way up to 68mm wich is 420cc.

[dajogejr]

Look for a Vito's monoblock 404 cylinder used in good shape. By the time you resleeve and port your OEM cylinders...you could probably bolt on a Vito's motor for about the same..

 

What is your budget? And where do you ride?

[badassbanshee479]

be careful with stock cylinders with a big bore kit in them.

The sleeve that is installed to make the big bore kit cuts the transfers way down and its hard to make power with them without a bunch of porting! I had a tyson 404 kit on my bike for a little bit and I was not happy with it. Made good power, but was not enough for me!

[jbooker82]

By the time you resleeve and port your OEM cylinders...you could probably bolt on a Vito's motor for about the same..

 

Yea your pobably right. I just happen to come across a pair of 4mill ported cylinders that needed resleeved. They were ported by patriot racing. I sent them back to him and figured might as well have bigger sleeves installed since they were getting resleeved any way. I only got about 400 in the cylinders. I wouldnt have done it if the cylinders were not alread ported for the 4 mill crank.