modified cdi and cr 80 coil

[the42ndoffense]

Received mine from jnmotorsbikes.com two days ago, noticeable increase in performance, still working with the selectable timing curves to find what works best. So far not sure its worth the $80 price tag. does fire very smoothly through rpm range. some increase in top speed overall however I had to go back to the stock exhaust because the internal parts in the expansion pipe that came with the chrome night kit broke(they advertised one, and sent me another, cheaper one). plug cable is not the one photographed either.

WTB:Expansion chamber

 

[decoherence]

i think the best application for this is with a high compression head.

so what kind of plug cable was sent?

 

[the42ndoffense]

Using ManicMechanic high compression head (amazing).

not quite sure what plug cable, its not the red MSD cable pictured, but a black cable with a large metal boot. i'll post photos and some information on the settings im using when im done testing.

 

[kojak]

Are those high compression heads in stock anywhere?

 

[the42ndoffense]

Re: kojak

High Comppression Billet Head for GT5 and PK-80

 

[kojak]

He hasn't had those for months.

 

[decoherence]

when i checked a few months ago they had them in stock.
the website doesn't say they are out. they are good about saying they don't have any in stock.

 

[buck0]

The stock CDI runs like a dinosaur compared to the modified one sold by Jnmotors. Well worth the 80 bucks. Next is to see how it'll run with the manic head.

 

[Tohri]

You guys can always use the puch head at Treatland.tv
Puch 50cc Hi compression head
Bolts right on to 6mm studs, might have to drill for 8s. Fantastic head, and cheap.

 

[mapbike]

You guys can always use the puch head at Treatland.tv
Puch 50cc Hi compression head
Bolts right on to 6mm studs, might have to drill for 8s. Fantastic head, and cheap.

Do you run one of these heads yourself?

If so pics please........I would like to see it in place on these engines.

Peace

 

[Venice Motor Bikes]

This is my newest review on these...
So- far, I've installed two of these custom CDI boxes & (CR-80 coils); & I've found that the internal electronics don't hold up to the heavy vibrations from high speed riding.

Both of the CDIs that I installed ended up failing several times & needed repeated re-soldering of the electronics inside.

These CDIs did what they were advertised they would do... but they quickly break.

 

[mapbike]

This is my newest review on these...
So- far, I've installed two of these custom CDI boxes & (CR-80 coils); & I've found that the internal electronics don't hold up to the heavy vibrations from high speed riding.

Both of the CDIs that I installed ended up failing several times & needed repeated re-soldering of the electronics inside.

These CDIs did what they were advertised they would do... but they quickly break.

I wonder what a more shock proof mounting of some sort would do for them......

Or


Just do these CDI's like we do some of the other stuff on these MB's, go into it and make it better right out of the box before it is even installed..... for the price though this thing should be very well made IMHO...!

Peace

 

[headtrama]

I laid down some silicone on the bottom of the box . And used some foam on top of it . I have been running mine like this for about a month now .

 

[mapbike]

I laid down some silicone on the bottom of the box . And used some foam on top of it . I have been running mine like this for about a month now .

Can you honestly tell a difference in how the engine runs with it compared to the stock CDI?

Just curious, I plan on getting a couple of them but I want more fed back from people who are alreadu running them to help me decide if they are worth the $80 or not..


Thanks, Peace

 

[headtrama]

It smoothed out the vibrations for sure . You get to run a real coil that's a plus . And you have four timing curves to choose from . I have done a lot of work to my motor besides the Cdi box , I built a pipe for it cleaned up the ports and changed the head the bike has picked up some mph and runs real good with no four stroking at all . The only thing left is for it to blow up now lol .

 

[mapbike]

It smoothed out the vibrations for sure . You get to run a real coil that's a plus . And you have four timing curves to choose from . I have done a lot of work to my motor besides the Cdi box , I built a pipe for it cleaned up the ports and changed the head the bike has picked up some mph and runs real good with no four stroking at all . The only thing left is for it to blow up now lol .

Oh My.! we dont want that............!

Did you upgrade the upper needle bearing?

this is what i'm doing to all my engines as soon as I get them in, I may put an offer in the swap & shop on these bearings so others dont have to chase them down if they would like to replace theirs also, I think this is a very good mod on these engines myself, I had an engine that was running great with maybe a slight clicking on the top end, I put a new head on that engine that I had shave down a few 0.000's and it started rattling pretty bad on top afterwards because the top bearing wasnt up to the increased compression, seems people have had failures with this bearing many times so from now on I'll be making this upgrade to all my engines..........


well I guess before long I'm gonna have to try one of these upgraded CDI units from JNMotors, the smoother part sounds good for sure and the increased rpm for a bit more MPH isnt bad either, I've done all kinds of other things to them might as well give this a shot too, these little boogers can use all the help they can get............!

Peace

 

[Venice Motor Bikes]

The CDI boxes that I used were from the forum member 'Jaguar' from Ecuador, NOT the new ones that JNMotors is selling!

 

[DuctTapedGoat]

As far as I know, Jaguar isn't making them anymore, as his site for CDI purchase links over to JNMotors.

 

[pasheil]

Does anyone have the Modified CDI Schematics Diagram so i can build it myself?? I live in Argentina, and the CDI's i can buy are for engines with a sensor wire.

 

[mapbike]

As far as I know, Jaguar isn't making them anymore, as his site for CDI purchase links over to JNMotors.

I had direct email conversation with Michael "jaguar" and he told me that he was giving the retail rights over to JNMotors exclusively but I was under the impression that he is still the manufacturer of the CDI and then JNMotors is just upgrading the package with the coil and the nice plug wire......

This is what I gathered from what he told me..........I could be mistaken on some part of it but I think this is right, please correct me if I'm wrong.

Peace