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View Full Version : i was wondering 85 to 86 250es differences



rcurtis16
12-28-2012, 08:15 AM
i can go for a ride on my fathers big red 86, and she picks up speed great, with a worn cam, she does good, weak on the hills unless you have her in a high rpm, but when i get on my 85 big red, she seems slugish, and shes set to a 300 with a 300 fourtrax cam, i can get my dads to rev out, but mine cant, and would carb having anything to do with it, my dads has never been adjust, taken apart, or anything, the carb, timing, and all that is still left factory settings

dustrunner
12-28-2012, 10:01 AM
ive got both years and never noticed any performance differences.. what do you mean " shes set to 300 with a 300 cam ? and yes if your carbs gummed up that will cause poor performance...

kebby28
12-28-2012, 09:32 PM
I also am curious what you mean by "shes set to 300 with a 300 cam."

rcurtis16
12-29-2012, 01:21 PM
haha, i mean, when the 300 fourtrax came out from honda, everyone things, hmm, bigger piston, now shes a 300. hell to the no, a 300 fourtrax motor is the same as a 250 motor, the differences is a bigger cam shaft, and its what i have in mine

rcurtis16
12-29-2012, 01:30 PM
i dont think my carb is gummed up, i think its completly set outta whack, i got a few carbs, im going to try the one i used for a year and see how she is

rcurtis16
12-29-2012, 03:17 PM
but what im really wondering is, i havent had my 85 rev out, i've tried, my fathers does, i figured out the rev limiter is in the cdi box, and someone told me the ones with rev limiter have more power

dustrunner
12-29-2012, 08:21 PM
ive never heard of a rev. limiter on an atc... did i just learn something ?

kb0nly
12-29-2012, 10:46 PM
Yes you did... There is two types of CDI's with and without the limiter. I found that out engineering a replacement for some.

rcurtis16
12-30-2012, 02:54 AM
soo is with limiter faster?

dustrunner
12-30-2012, 02:33 PM
[QU OTE=kb0nly;1182518]Yes you did... There is two types of CDI's with and without the limiter. I found that out engineering a replacement for some.[/QUOTE] did a factory 85-87 big red have one of these rev. limiters ?

rcurtis16
12-30-2012, 04:31 PM
85 didnt have it factory, but i do know 86 did, im just wondering is it faster with the rev limiter?