Why would a bigger, heavier cam make my front end lighter??

[250X_project]

I only put a better stock cam and rockers in the 92 250x. Man does she run better! Not to mention sounds better. No more tick-tick-tick. Haha

Sorry for the foolishness. I just wanted to let those 250X/300EX riders out there know.. there is always hope for these bullet proof machines!

Long live the X!:cool:





Also, I am ashamed to say, I just bought an 02 Raptor 660. Does anyone have compression numbers for it? Of course it won't start... :rolleyes:

[dork]

ah, you had the old round lobes...:cool:

yea these motors have really survived, considering they're based off a 33 year old design.

[250X_project]

Oh they were round, alright. You just "eyeball" the cams and see a significant difference. It pulls so much better!

What do you mean these are based on a design from 1974?

[bwamos]

Motor was out of an old retired motorcycle that they already had the tooling for. Add a counterbalancer and put in a reverse gear and wala.. atv motor. As was the trend for most ATV's.

[250X_project]

Oh, no kiddin'. I never knew that. Must have been a good bike! :D

[dork]

i've got some CYCLE mags from 74 with a test of the 'new' xr/xl 250 and they had the topend apart and almost everything looks the same as the 250x/300ex/350x. everything except for the points:eek2: hanging off the side.

here's (http://www.oldrice.com/xl_page.htm) a cool site about the older motors. and they were going crazy with the motors back then. nothings new:cool: after looking at some of these articles, i think the 250 came out in 72.

[250X_project]

I never knew this is where these engines came from! I learn something new every day. Haha.