crf450 motor?

[go_chrisg]

i hear that the 450's piston only lasts a bit longer than a 250 2-stroke's?is this b.s or is it true?

[Narly R]

I dont think thats true, but I heard that you have to redo them quite often.... my friend has had hsi new 03' since about last fall, and has a lot of time on it, and it runs perfect still...:confused: The guy that I bought my engine from said he put a new piston, or atleast rings in it, like every 20 hours or sumthin...

[go_chrisg]

anyone else that knows for sure?

[team_450_88]

:D new rings every 4 months and Piston every 6 or 7 months...depends on how much ya ride !!

[ReconRider25]

the piston is so thin and like a pancake with such high compression that it dosent last nearly as long as the piston out of say a 300ex. so yes they do have to be rebuilt more often.;)

[Mikey]

There are no real piston problems with CRF450s. It is the titanium valves that wear out and should be replaced every 100 hours per Honda. Most guys are replacing them with stainless valves and replacing the piston while the head is off. Some people have gotten 300 plus hours out of the valves without any problems. Just keep the airfilter clean. Go hunt around www.thumpertalk.com in the CRF450 section for more info.

[team_450_88]

:D If you want a crf450 quad I got one for-sale $6,500 ( national ready ) hell I think the crf motors are running about 2 grand and I got a whole bike set-up ready to race for $6,500...I mean its still new!!

[go_chrisg]

team_450_88 i wish i could buy ur quad.....but i live in canada and i cant be going down there :p

[team_450_88]

haha yea