curtis sparks 465 national seriously thinkin bout it any reviews?

[hondaboy400ex55]

im really thinkin bout gettin a 465 national kit made by curtis sparks for my 400ex any bout ever seen or heard about this kit?

does anbody know any body that has one?

http://www.sparksracing.com/frame_1.htm

click 400ex then 465 Pure Power

sounds like something that will tear up the track! i bet its really bad ***!:devil:

[K_Fulk]

I have a 400ex cylinder that is already bored for the 465 sleeve if your interested. Needs a new sleeve though.

My 465 motor runs very strong, its diffrent then sparks kit. But I am sure theres runs plenty strong as well.

[tdsongster]

I am thinking of doing the 465 kit with 13:1 compression and an additional oil cooler. Who has experience with this set up in woods racing (harescrambles)???

[honda92]

i know a guy who has one, i believe it is right at 50 hp. he even trail rides the thing, i don't think he has ever had a problem with it.

[fitethesystom]

<font color="brown">hey if you have 13:1 compression did you upgrade your crank & connecting rod???

[tdsongster]

If I go with the 13:1 compression then I will certainly upgrade the connecting rod and head bolts, etc

[fitethesystom]

tds - i would think that's a good idea i hear of alot of people blowing the rod shortly after upgrading/boring high comp pistons

[K_Fulk]

I would look into getting the crank balanced as well with the 465.