CR250 ignition for the 500 question (pic)

Apollo · Post by **Apollo** » March 20th, 2008, 11:46 am

I had 2001, 2002 and 2003 CR250R's and they did not have the power jet carbs. The 04 CR250R that my friend just bought I beleive does have the jet.

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » March 20th, 2008, 11:53 am

my '02 neither, but bro's '04 4 sure has it. and altho he's lighter than me by 40lbs, my bike (both with no engine mods, but his with a fmf pipe is slower than me on my stocker) his maybee has a little more riding, and both got pistons fresh same week

100hp honda · Post by **100hp honda** » March 20th, 2008, 4:30 pm

Caseys500 wrote:So, this might be a retarded question but the CR250 ignition (stator) I am putting on my bike has a ground wire. Is it supposed to run to the stator plate mounting bolt? Will it be ok if I do that? Just wanted to make sure since the 500 stator doesnt have one on it.

hey dude what year is that 250 ignition/flywheel from??? any chance you could weigh the 250 and 500 flywheels and let me know what the weight difference is??

Caseys500 · Post by **Caseys500** » March 21st, 2008, 8:37 am

I was going to but I dont have a scale that wieghs in grams or ounces to show the difference. The size was a big difference but holding the 2 in my hands felt very close in weight. It's already put back together and I still need some female bullet connectors to finish it up...I did have the wife hold the wires together for me while I checked for spark and got a little shock so I know it works!

Woot Woot!

The entire ignition is from a 1990 CR250, other then the coil isnt the stock one, its a lighting coil from steahly! Only $115 too!

iggys-amsoil · Post by **iggys-amsoil** » March 21st, 2008, 6:30 pm

Caseys500 wrote:I did have the wife hold the wires together for me while I checked for spark and got a little shock so I know it works! Woot Woot!

"Hey Honey can you come here and hold these for a minute? "

aloha450x · Post by **aloha450x** » July 8th, 2008, 7:26 pm

what about using this? http://www.rickystator.com/catalog/prod ... ucts_id=97

PowerFiend · Post by **PowerFiend** » July 9th, 2008, 7:27 pm

LOVEMYCR500 wrote:Did the 02 and newer CR 250's have the power jet carb? If so, I would not buy this ignition nor any years that had this feature. I know that 01 did not and looking at curves has a better over all curve than the years that had the powerjet carb. You take the CR 500 ignition off including the flywheel, and use the 250 stuff inculding the 250 flywheel. I don't know what the weight diff is 250 vs 500 flywheel but looking at them it's going to be pretty insignificant compared to the bottom end response you will get with the advanced timing down low. I have a feeling the curve on 90-01 CR 500's is a bit retarded at first for starting, then probably pretty flat at some point in the rpm's accross the board. The TRX 250r timing curve is at a flat 21 degrees accross the entire curve unlike the CR 250 it retards at a pretty low rpm for starting, then spikes up at a pretty high advance curve for bottom end, then starts to really retard in the upper midrange to top end for overrev. Just looking at the stator, it should just bolt right in. Use the 250 flywheel as well. I know on the TRX this alone picked up 3 HP on top, a overall broader power band and chripser throttle response. Probably have a bit easier starting as well.

I'm interested to know if the TRX250R stator and flywheel bolt up, since Ricky has a 200watt stator and you can get Dyna digital CDI's for them.

aloha450x · Post by **aloha450x** » July 9th, 2008, 7:45 pm

stock cr500 flywheel weighs 20.50 oz. i just weighed mine. who has a 250 flywheel?

4Z · Post by 4Z » July 9th, 2008, 7:48 pm

Piston wash, plug, feel and sound, did I miss anything?

aloha450x · Post by **aloha450x** » July 9th, 2008, 7:57 pm

4Z · Post by 4Z » July 9th, 2008, 8:01 pm

aloha450x wrote:huh?

LOL...please ignore me.....TIA

aloha450x · Post by **aloha450x** » July 10th, 2008, 12:18 pm

I got a 250 setup on the way so ill weigh the flywheel when it gets here if anyone give a fuck. haha

dannygraves · Post by **dannygraves** » July 10th, 2008, 1:00 pm

DO IT

blownbillybob · Post by **blownbillybob** » July 12th, 2008, 7:55 am

I got everything...the flywheel, stator and CDI. This is all from the same year range too, the 89-92 CR250. (quoted)

ive never done this conversion before but have heard about doing it do i need all these parts or can i just plug in a CDI and go i have a 89' & 91' will the 89-92 250 parts work on my 89'

dannygraves!!!you did this on your AFC did you notice any difference in the top end or was it all down low?

dannygraves · Post by **dannygraves** » July 12th, 2008, 10:37 am

all over with tremendous hit! Almost scary. if you ride the trails... DON'T DO IT.

blownbillybob · Post by **blownbillybob** » July 12th, 2008, 11:28 am

its going to be for my hillclimber so sounds good do you know what years will work for my 89' and can i just plug in the CDI and go,did you use the 250 flywheel. thanks danny!!!

dannygraves · Post by **dannygraves** » July 12th, 2008, 11:44 am

I used a '88 cdi on a '86 500 stator and flywheel.

aloha450x · Post by **aloha450x** » July 15th, 2008, 7:16 pm

stock 92 cr250 flywheel weighs 16.3 oz.
stock 91 cr500 flywheel weighs 20.5 oz

hey danny the coils are different. the 250 is much smaller. i assume it's ok to use the 500 coil.

dannygraves · Post by **dannygraves** » July 15th, 2008, 7:19 pm

yes, the 250 and 500 coils for '87+ are the same resistance.

100hp honda · Post by **100hp honda** » July 15th, 2008, 7:26 pm

packard told me yesterday the whole '01 cr250 setup works real sweet. anybody know what that '01 cr250 flywheel weighs ?

ugly1171 · Post by **ugly1171** » July 16th, 2008, 1:28 pm

100hp honda wrote:packard told me yesterday the whole '01 cr250 setup works real sweet. anybody know what that '01 cr250 flywheel weighs ?

I've just fitted this set up. Had to machine the back of the stator plate to make it fit. So that dispels the myth that is a easy fit/straight swap!
As for the weight of the flywheel, i can tell you its noticably lighter. If i can borrow a flywheel puller this weekend, i'll take it off & weigh it for you.
Ugly

dannygraves · Post by **dannygraves** » July 16th, 2008, 1:51 pm

I'm about to try the '03 cr250 setup

the back of the plate will need some grinding to fit, but everything else looks good. that 250 flywheel is pretty light, but also much smaller in diameter which will also greatly reduce the flywheel effect.

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » July 16th, 2008, 1:55 pm

did honda have throttle reference in the '03, or started '04? and something else to throw out there, I had to enlarge the step in my '88 ignition to slip it into my '86 engine. I could have run the '86 setup, but didnt have time to change the cdi bracate.

dannygraves · Post by **dannygraves** » July 16th, 2008, 1:59 pm

TPS started in '04. so '03 is probably the last year you could run without running the 250 carb too.

100hp honda · Post by **100hp honda** » July 16th, 2008, 5:05 pm

ugly1171 wrote:
100hp honda wrote:packard told me yesterday the whole '01 cr250 setup works real sweet. anybody know what that '01 cr250 flywheel weighs ?
I've just fitted this set up. Had to machine the back of the stator plate to make it fit. So that dispels the myth that is a easy fit/straight swap!
As for the weight of the flywheel, i can tell you its noticably lighter. If i can borrow a flywheel puller this weekend, i'll take it off & weigh it for you.
Ugly

sweet man. did you find the whole system on ebay from a blown up bike or what ? was the stator machining easy for a machine shop or who did it ? definatly weigh the 250 and 500 flywheels because i wanted to know this answer for a long time

BannedCR500Riders.com

CR250 ignition for the 500 question (pic)

Re: CR250 ignition for the 500 question (pic)