06 engine experience needed

[eganracing]

who has done some serious engine work to there 06 and what did u do? i want to up the compression on mine and port and polish the head. i mainly want to know if any of u guys have run into any problems with modifing the 06 engine. o and what is a good piston company? i ran a wiseco in my 440 and have had no problems but i have heard that they break or something.

[xc400ex]

JE is a good brand of piston, I recommend them over wiseco because there comp ratios are right without decking any heads or cylinders. With a wiseco you cant just drop in a 13:1 and actually be 13:1 like a JE, you gotta do some mill work. Put a 13:1 Je piston in it, hrc or hotcams whatever cam you want, get a good foam air filter rejet the carb and you will notice big gains, if you have an exhaust already especially. You may be wanting more than this, if so ask around some shops for some high velocity head porting, dont screw with port and polish and someone dremeling out the head, thats not where its at. The 06 should be better for motor work considering the early 04's had crank bearing failures.

[lumi]

black widow has a 14:1 if im correct and is suppose to be a top quality one, they have alot of info on trx450r.org. alot of people have put them in there quads, and a couple in there 06 as well.





-lumi

[chad502ex]

I've build 450Rs

DRG porting is all about high velocity porting

:macho


here is a picture of a stock 06 450R port with NO PORTING

[eganracing]

Originally posted by chad502ex
I've build 450Rs

DRG porting is all about high velocity porting

:macho


here is a picture of a stock 06 450R port with NO PORTING

what about a picture with porting?

[chad502ex]

go to my website