Do SR models have a different cdi box?
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Do SR models have a different cdi box?
Just wondering if the SR models have a different CDI box with a different timing curve then our bikes since they're designed for street use.
Last edited by Roadhazardguy on 11:04 pm May 16 2013, edited 1 time in total.
Tony
1988 KDX 200
1980 KD 80
1989 ATK 406
1984 RM 500
1980 KZ 1300
2008 SM450R
1988 KDX 200
1980 KD 80
1989 ATK 406
1984 RM 500
1980 KZ 1300
2008 SM450R
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Do SR models have a different cdi box?
Yes they do!Roadhazardguy wrote:Just wondering if the SR models have a different CD box with a different timing curve then our bikes since they're designed for street use.
I have the Australian version of a 1989 KDX200SR - it's called a KDX200F1 - and according to the owners handbook the ignition timing is 17°BTDC @ 1300 rpm ~ 22° BTDC @ 4000 rpm.
The E series ignition timing according to the service manual is fixed at 21° BTDC @ 6000 rpm.
I have fitted the E series CDI to my bike (I had to extend the wiring as the CDI is mounted on top of the air box lid on my bike) but when I checked the timing of both CDI's by strobe light, I couldn't see any real difference in the advance or timing!
It's probably psychological, but I think that my bike goes a bit better now with the E series CDI!
Cheers
Last edited by Dodger on 02:32 am May 17 2013, edited 1 time in total.
I may be old, I may be slow, but hey I'm still getting my leg over - a dirt bike!
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Do SR models have a different cdi box?
Dodger wrote:Yes they do!Roadhazardguy wrote:Just wondering if the SR models have a different CD box with a different timing curve then our bikes since they're designed for street use.
I have the Australian version of a 1989 KDX200SR - it's called a KDX200F1 - and according to the owners handbook the ignition timing is 17°BTDC @ 1300 rpm ~ 22° BTDC @ 4000 rpm.
The E series ignition timing according to the service manual is fixed at 21° BTDC @ 6000 rpm.
I have fitted the E series CDI to my bike (I had to extend the wiring as the CDI is mounted on top of the air box lid on my bike) but when I checked the timing of both CDI's by strobe light, I couldn't see any real difference in the advance or timing!
It's probably psychological, but I think that my goes a bit better now with the E series CDI!
Cheers
Thank you for that post, good info there!
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Re: Do SR models have a different cdi box?
Thanks for the info! I got to wondering this because I want to convert my ATK over to Sumo/Street use, and while doing so I want to get rid of the motoplat stator on my ATK and use a bosch stator from a Can-Am. Then I can rewind it for for better lighting and ignition, so i'm trying to figure out what the best CDI box would be to use. I figured the timing curve might be a deciding factor while picking a box and its looking more and more like it should be, any ideas?
Tony
1988 KDX 200
1980 KD 80
1989 ATK 406
1984 RM 500
1980 KZ 1300
2008 SM450R
1988 KDX 200
1980 KD 80
1989 ATK 406
1984 RM 500
1980 KZ 1300
2008 SM450R
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- Joined: 09:12 pm Nov 27 2010
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Re: Do SR models have a different cdi box?
Sorry but I'm afraid I don't have any ideas!Roadhazardguy wrote:Thanks for the info! I got to wondering this because I want to convert my ATK over to Sumo/Street use, and while doing so I want to get rid of the motoplat stator on my ATK and use a bosch stator from a Can-Am. Then I can rewind it for for better lighting and ignition, so i'm trying to figure out what the best CDI box would be to use. I figured the timing curve might be a deciding factor while picking a box and its looking more and more like it should be, any ideas?
I've never swapped a CDI from one make of bike to another.
Good luck with your project.
Cheers
I may be old, I may be slow, but hey I'm still getting my leg over - a dirt bike!
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Re: Do SR models have a different cdi box?
Does anyone have an SR box they want to sell me or something with similar timing curve. That is pretty darn close to what I need if not just a few degrees higher at the bottom with about the same curve.
Edit: Never-mind that wouldn't be right, I misread it. It needs to be pretty much backwards from that. That is a really weird timing curve for a 2 stroke from everything ive seen, and that''s probably why you felt an improvement when you switched.
Edit: Never-mind that wouldn't be right, I misread it. It needs to be pretty much backwards from that. That is a really weird timing curve for a 2 stroke from everything ive seen, and that''s probably why you felt an improvement when you switched.
Tony
1988 KDX 200
1980 KD 80
1989 ATK 406
1984 RM 500
1980 KZ 1300
2008 SM450R
1988 KDX 200
1980 KD 80
1989 ATK 406
1984 RM 500
1980 KZ 1300
2008 SM450R
- Jaguar
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Do SR models have a different cdi box?
There are basically two types of CDIs, one that uses a trigger voltage and one that doesn't. The KDX doesn't. If you want a KDX CDI then you can buy one from me. Here is my page about it: http://www.dragonfly75.com/moto/KDXCDI.html
Performance CDI -- KDX motocross mods -- the SR KDX -- expansion chamber analysis---> http://www.dragonfly75.com/moto/
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Re: Do SR models have a different cdi box?
Yes you can the E and SR 200 CDI is interchangeable. only difference is the extra wiring on the sr model cdi.
A true KDX customizer!!