1997 CR250 Ignition

robertg · Post by **robertg** » January 17th, 2009, 12:30 pm

Complete ignition from 97-99 CR250. I bought it but never used it, and I have no way of testing it. The seller said it came off a running bike. $60.00 US funds, plus shipping.

100hp honda · Post by **100hp honda** » January 17th, 2009, 12:40 pm

i wonder if thats a digital cdi ? what do you think that stuff is on the back of the cdi ?. why didnt you try to run it atleast once ?

Ported&Polished · Post by **Ported&Polished** » January 17th, 2009, 12:57 pm

That looks like it is the rectifyer for the lighting coil.

robertg · Post by **robertg** » January 17th, 2009, 12:58 pm

100hp honda wrote:i wonder if thats a digital cdi ? what do you think that stuff is on the back of the cdi ?. why didnt you try to run it atleast once ?

It's supposed to be digital from what I know. I haven't even had my bike running yet, it's still in pieces. I don't know what that stuff on the CDI is, Maybe a voltage regulator?

To make this fit on a 500, the center hole in the stator plate has to be made bigger.

MICK · Post by **MICK** » January 18th, 2009, 4:20 pm

I suppose there's going to be a surplus of 250 ignitions for sale

If it's a '97 it should be digital. Sure looks like it to me...

97af · Post by **97af** » January 19th, 2009, 9:19 pm

100hp honda wrote:i wonder if thats a digital cdi ? what do you think that stuff is on the back of the cdi ?. why didnt you try to run it atleast once ?

Its the regulator....For the electronics on the carb......

dannygraves · Post by **dannygraves** » January 20th, 2009, 8:26 am

ya, '97 was digital and all that extra crap is for the electric powerjet and to regulate the input voltage for the cdi since it is digital.

Post by **AlisoBob** » January 20th, 2009, 8:45 am

97af wrote:
100hp honda wrote:i wonder if thats a digital cdi ? what do you think that stuff is on the back of the cdi ?. why didnt you try to run it atleast once ?
Its the regulator....For the electronics on the carb......

I thought it was for the turnsignals...

hoofarted · Post by **hoofarted** » January 20th, 2009, 9:33 am

...but will it work on a 500? I dont think there was any certainty in Mick's thread. If it will work, I am interested. Shipping to 90024?

south central hoon · January 20th, 2009, 1:51 pm

Its the regulator....For the electronics on the carb......[/quote]

X2

robertg · Post by **robertg** » January 20th, 2009, 3:37 pm

There is a spare set of wires that go to a sensor on the carb. I don't know if the throttle position changes the timing or the RPM changes something on the carb.

I was thinking if the timing is varied by the throttle position, it wouldn't take much wire in a switch and a couple of resistors to change the timing curves.

If anyone is interested, I'm sure $10.00 will cover shipping.

dannygraves · Post by **dannygraves** » January 20th, 2009, 6:04 pm

damn it, how many times do I have to say it, '97 and '98 had an elecric power jet, TPS didn't come in until '04

robertg · Post by **robertg** » January 20th, 2009, 6:16 pm

dannygraves wrote:damn it, how many times do I have to say it, '97 and '98 had an elecric power jet, TPS didn't come in until '04

What is a power jet? I am assuming those two extra wires open a valve to give it extra fuel under certain conditions?

dannygraves · Post by **dannygraves** » January 20th, 2009, 6:20 pm

I have a vacuum powere power jet on my mikuni, during extended periods of WOT it lits more fuel in to avoind a lean condition. a 2 stoke can't be held WOT for very long without seizing unless you have a powerjet.

Post by **AlisoBob** » January 20th, 2009, 8:27 pm

Thats not true at all......

I've gone 1/2 the length of El Mirage dry lake.... pinned.

Get the right main, and needle, and your all set.

fastkart · Post by **fastkart** » January 20th, 2009, 9:31 pm

AlisoBob wrote:Thats not true at all......

I've gone 1/2 the length of El Mirage dry lake.... pinned.

Get the right main, and needle, and your all set.

x2... I ran 1.5-2 miles pinned at 8500-9000 rpm and the motor lived to tell about it.

dannygraves · Post by **dannygraves** » January 20th, 2009, 9:42 pm

well, let me rephrase that... to run an ideal main jet for the best possible throttle response would leave to lean as all fuck by a certain rpm and sustained WFO, a powerjet allows you to run a %20 leaner main, so she is crisp as fuck even at super low rpms being slapped open and the powerjet starts delivering when vacuum is created after the slide.

My gen-4 runs wfo like crazy on a 170 but she'd run freaken awesome on a 135 main with a powerjet

dannygraves · Post by **dannygraves** » January 20th, 2009, 9:44 pm

but, both of you do realize that you may not have gotten dangerously lean, but you are leaning out any 2 stoke holding her open... it really takes a lot of abuse to damage them though.
I'm not pulling this out of my ass, DeWayne and I had a 2 hour long conversasion about it and I have a feeling he knows a thing or two

britincali · Post by **britincali** » January 20th, 2009, 10:07 pm

Lean is mean period

It does fuk stuff up tho

dannygraves · Post by **dannygraves** » January 21st, 2009, 8:30 am

britincali wrote:Lean is mean period

It does fuk stuff up tho

yeah, that is the problem... they always run the best right before they squeek

hoofarted · Post by **hoofarted** » January 21st, 2009, 10:07 am

dannygraves wrote:
britincali wrote:Lean is mean period

It does fuk stuff up tho
yeah, that is the problem... they always run the best right before they squeek

talking from your 125 experience - lol

So back on topic - will this setup work on a 500?? Or would it just be better to get a 94-96 setup?

MICK · Post by **MICK** » January 21st, 2009, 1:29 pm

Nothing is going to be as easy to swap than the 94-96 stuff. And provided how well it works it's hard for me to entertain the thought of using anything else?

However...

I haven't read a good review on the digital systems. It could be those 97+ ignitions work sooo good it's worth the pain in the ass to mount them. I've read a number of guys say they run the digital systems, but don't have much to say about them? So I say someobody try it already and provide us with decent feedback. I'm a grunt so I like looking at pictures, if whoever would be so kind as to make a graph like I did, it would be greatly appreciated

robertg · Post by **robertg** » January 21st, 2009, 4:07 pm

http://cr500riders.com/cgi/yabb/YaBB.pl ... 205070/9#9

I found this on the other site, but it doesn't say much.

MICK · Post by **MICK** » January 21st, 2009, 4:23 pm

Exactly...that was one of them I was thinking about. I guess I'm just stupid, I need lots of pictures and drawings etc. That thread just doesn't tell me anything. Actually, I'm a little confused haveing just read it now

100hp honda · Post by **100hp honda** » January 21st, 2009, 5:00 pm

i think it was that ugly1171 guy here that installed complete '01 system on his. he installed it but never posted about the results

BannedCR500Riders.com

1997 CR250 Ignition

1997 CR250 Ignition