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New CDI

17K views 41 replies 8 participants last post by  acecarlos  
#1 ·
I need a new cdi for a 86. As I see it I have a couple options.

1. Find a old used cdi (which it did) and use it. The one the guy sold me was junk and i got screwed but thats beside the point. A old cdi will only last so much longer and back to square one again needing a cdi that is compatible.

2 Use a aftermarket one

3.Use a aftermarket one and retard the timing.

I have did all my reading on aftermarket CDI's and also wrote down all the honda numbers and cross referenced numbers off all four years of the bikes for their cdi's, stators, flywheel, and wiring. I'm at the cross roads of find or making a cdi compatible and so will everyone else one day because they don't make them anymore and eventually they all will die..... I know sad story. So I'm doing this now and hopefully save some people trouble or myself trouble and we hash this out. Does anyone know of any after market brand CDI's that has worked with NO problems!?? The brands I seen online was Hotshot (which isn't that the same as Rick's?),Rmstator, Dynatek, Rick's, K & L supply, Electra Sport, Arrowhead, and DB electrical (which serial serial number wise and price I believe was just another Unbranded CDI).

My problem is the kick backs and not rev all the way through but then I seen the bike didn't have the right CDI to begin with so that might be half the problem. I also read about a artical about the aftermarket cdi's doing that or other possible problems from a bad head gasket too, or wrong jetting. I'm guessing if you can find a CDI that will idle and rev though all the RPM's then half your battle is done. Then to just address the kickback problem. Which I believe you can buy a timing plate and retard the timing a little to fix the problem then right? Also I read about advance and retarded timing. The advance timing gave you more middle band with less rev but the retarded timing gave you less in the middle but more rev so in the end I believe retarding the timing on a aftermarket CDI might fix the problem? Yes or NO? I mean if its firing too early thats where the kick back is coming from right? I would like people input on stuff they have tried. Like the brands, what they were like, timing with dif brands, kickback problems they solved and what their perticular problem was that was causing it and how they fixed it, etc etc. Maybe not reving all the way through and it was a electrocal problem. Anything to do with the electrical and kickbacks and timing etc etc.

I think I"m just going to get a cdi in the mail tonight and have it by the weekend and start mashing out this process of trial and error and also order a timing plate. I have a 86 trx by the way and I'm assuming 86 flywheel and stator but who knows when you buy a used 250r. Thank you all for your time and help!!

P.S. Carlos I tried writing you buddy and your inbox was full and I even tried replying to a conversation we had a while back and even that wouldn't go though so just giving you a heads up if your reading this I tried to get a hold of you and also clean out your inbox lol.
 
#2 ·
bdt is the only one that sells ones that actually work..he isn't on here anymore.if you need one you have to call bdt and order one from ricardo...as for the rest...I have never checked but imo the problem with the aftermarket cdi
s is too much initial timing,and not enough total so with that being said an adjustable timing isn't going to fix the problem.
 
#3 · (Edited)
Thanks for the tip. I called BDT and Ricardo just happen to answer but when i talked to him he said 86 was discontinued which i told him i knew that but I read online from carlos that they carried CDI's and also you had said something. He then said he had a cdi for a 88 and 89. I asked him about it working or not and the timing curves and wiring etc etc. He said he didn't know that kind of info but that the cdi's was on back order. I asked by back order as in they don't make them no more so they never will come back in. He said no that they will be in about 2 to 3 weeks. I then was puzzled and asked if they don't make them anymore how are you still going to get more in 2 to 3 weeks. He said they don't make 86 but that honda makes 88 to 89. I found that weird because my understanding is they don't make any of them. I even looked up shindengen and honda and trying to get contact numbers and email people the problem and find a work around is hard.

What do you meaning initial timing is too much but not enough total? If its to much initial timing at start and idle then it only gets more advanced as the rpm's speed up which would be more total timing. I appreciate the help man! I know there has to be a leget cdi out there somewhere that will work with these bikes. I mean what happens if bdt never gets them in or they do but they eventually quit carrying them? I ask him the brand or model number or something and ricardo said he didn't know so I kinda in the dark about this cdi they have.

P.S. what happen to carlos?

P.P.S. I also called my local world of powersports and they said both years 88 and 89 was discontinued so I guess whatever the cdi bdt has isn't OEM.
 
#4 ·
I just looked at the parts numbers and 88 has the same stator as the 86 so the difference is in the cdi and flywheel. 88 and 89 have the same cdi and flywheel just different stator and wiring (because the connections are different on the 89). So I'm guess if I can find a HB9 cdi and the 88 or 89 flywheel with it then it should work on my 86 because they have the same stator as 88 and it worked. I just tired of using old parts because a guy already got me for a 100 bucks on a used HA2 already. Also how long will this HB9 last me?...
 
#5 ·
IMO Don't ever pay over $40-$50 on a used one. The K&L HB9's are GTG, that is what Carlos told me. That said the only other way to get a good one for sure is from BDT. Now I have bought 2 on the marketplace in the past couple of weeks and both members sold me great working ones, which I tested.

Im pretty sure all year CDI's work with all wiring harness's, so it doesn't matter what year cdi you get. Opel correct me if i'm wrong.
 
#6 ·
carlso was ordering dozens of them at a time.that's the only way they would make them...as for timing..yes too much initial timing.thats why they kick back...but they don't have enough timing in them to have enough total....as for 88-89 all oem cdi's have been discontinued for many years.carlso is having same co make them for him.but has to make a large purchase to get them to make them.
 
#10 ·
Don't listen to this guy, these people you have to just tune out and act like they don't exist.

K&L im pretty sure are good to go, next thing is to buy new from bdt. Other then that, buy used. Everything you tell them just goes through one ear, and out the other.


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Sorry we disagree, BDT is no longer a site sponsor here. I gave good advice, buying a used one that is truly OEM is much better then buying something from BDT which may or may not be legit.
 
#13 · (Edited)
OP, I have gone through Carlos for a dozen things on my bike and about to send him 2 motors. He's already done work before on them. He's taking my calls on Sunday nights to help me figure things out. He is a good solid man. You have to take these things people say about him with a grain of salt.


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#14 ·
Because its ridiculous you people are still going after Carlos for all that he's done for the R community, and that whole flow bench thing was debunked a long time ago. Im not going to argue with.

OP, I have gone through Carlos for a dozen things on my bike and about to send him 2 motors. He's already done work before on them. He's taking my calls on Sunday nights to help me figure things out. He is a good solid man. You have to take these things people say about him with a grain of salt.


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I'm done with the argument over bdt.
Thread jack; Michael were you the one that had the CT graphics 250r with the arched swing arm?
 
#22 ·
i did business with carlos and his claim to the work he did was a lie. i called him out on it then there was a buch of bullcrap that followed. the post that i started got closed. if it was not for another member on here who was at the time spending a lot of $$$ with carlos i would of been not been able to recoop my loss. even though i did receive compensation it was not what i paid for. these are facts not made up not fiction. speaking for myself i would not ever trust what he said.
 
#25 ·
For sole purpose of the thread being hijacked to hell and back, and curiosity really. If you want to put it out there publicly please do, but this thread is not the place. If you made one concerning it as a thread by itself then people could find it more easily.


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#26 ·
skiddy83 there is no hijack here you are trying to purchase a cdi from a bdt. your questions were that you seamed like something funny is going on when you called other parts vendor. you learned that the part was is no longer being made frome the manufacture. you questioned what was bdt selling then. i only gave you skiddy83 my personal experience with bdt is that i would not trust his service. thats all. pretty simple
 
#29 · (Edited)
I can read it just fine, you are all the same. Respect for Rex being a man and taking it to pm's to have a constructive argument. Im a level headed guy, but you are acting just like all the others. Insulting people and won't back it up, why?
 
#30 ·
you are the one who is blowing up this thread. with all your back and forth crap. my story only needs my word. oh wait you are the one with all the great customer service and motors being built so now its your turn back that up you got photos pics video receipts of your bdt service. if you do i don't need to see it. i don't need to call you out. you are the one calling people out. i don't pm behind peoples back about the truth. maybee you are a politician ? because thats what they do deals and talk behind your back and cover up crap. or is that what you call an insult ? sorry if you are thin skinned bdt gave me a bum deal and you want me to keep my mouth shut when ther is someone else who freely asks a question about him . hell no son you cant push my freedom of speach around. i remember the last post that i repied to and you were involved you poked at me on that to. let the op get free information on here we all differ but you are annoying. you call every one out and through them under the bus. so you let your input be heard thats great let others be heard as well. and be respectfull to all.
 
#31 · (Edited)
I am not trying to infringe on your speech, Douglas. I even recommended you make a thread about it so its easier to be seen by future possible customers when they search such a thing. I wasn't PM'ing behind backs here, Rex messaged me so we wouldn't do what we are doing now. I never asked you to keep your mouth shut id like to here it.

I have always respected you and you have helped many times over in the past years. This thread is the first time I have joined in a BDT bash, ever. I've had enough of keeping my mouth shut, but what the hell do I know im just a kid.

If BDT is screwing people over, making fake deals and lying id personally like to know so I can lookout for it and avoid if need be, but nobody ever says how they got screwed or this or that. So I don't know what to look out for, and neither do others that look at this stuff in the future.

Im not here to "call people our" or go "behind doors." But its the same thing every time BDT gets bashed. People start insulting, but they never say exactly what happened. Every single one that I have seen.

So call me what you want, its not going to hurt my feelings.

You need to chill the hell out.


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#32 ·
what I can say is I needed a cdi due to I had 9 aftermarket ones and thought I still had one oem one left..well I must have used it.all the crappy aftermarket ones sucked,kickback,ran like crap,and acted like it was too rich...I ordered one from bdt and it worked perfect...about 6 months later I got another one and it also worked perfect..it is now the one I use with a race cut harness I check every new 250r I get.....sooooo I can personally say the cdi's bdt sells actually work just like oem...that's not what I have read its what I have personally learned.
 
#33 · (Edited)
Dang I missed a lot the last couple days lol. Anyway we are back on subject it seems. The main point of this post is we all work together to find out a solution to mine and soon to be everyone's problem. What to do when the old stock OEM cdi's goes bad or in my case it didn't have to proper one on it when i bought it. I'm going to check BDT and ask them but worst case if the CDI doesn't work then I should be able to send it back and be out a few bucks on shipping but that doesn't fix our problem. I the cdi's at BDT does work its not going to last long.

I see a few options but only a few are do able.

1. Use a whole system off another bike like the cr250's which I haven't even looked into that yet but I doubt they still make the cr250 system still ether. Or a electrical off a totally dif bike. A lot of trial and error and work and fails but anything can be done.

2. Use a used CDI. Which to me is like putting a bandaid on a problem. Yeah its a quick fix but you still are going to continue to have the problems and there aren't enough old cdi's laying around for everyone years from now.

3. I did read a post that a guy posted about K&L cdi's and carlos said to not use any aftermarket cdi's (which a lot of you all have confirmed) but K&L. Now not to start another argument about carlos but he isn't making money off or work for K&L and others have said good things so besides the BDT cdi's (if they ever get them back in and who knows how long that lasts), K&L cdi's, and old OEM cdi. Those are the only 3 options unless you want to try the 4 which would be putting another bikes whole entire electrical on a 250r. Here is the link from the other forum i read about K&L.

http://www.trx250r.net/forum/engine-transmission/36810-anyone-ever-tried-k-l-hb9-cdi-kickback.html

I have heard all the arguments about the timing, cdi's, harnesses, stators, etc etc and even carlos in a thread said you could use any cdi on any bike as long as it was the right harness and stator that went with it. I spent about a hour or two going through honda numbers and charted all the 4 main numbers for CDI,Harness,Stator, and Flywheel for all 4 years and I looked at the differences and similarities. From what I got I believe its the cdi and flywheel that matters. Now i'm going to test this idea myself asap. I read on another thread a guy had a 89 and used his buddy's 89 cdi and nothing but after a lot of kicking when he was doing it would spark once. He knew the cdi was good because it came off his friends R. So he then put his buddy's whole electrical on and boom it ran! So something in the years don't mix. Looking at the honda numbers i said before. I noticed the harness changed every year and most the other parts didn't so I ruled out the harness. The 86 and 87 are the same except the harness. 88 they changed the cdi, flywheel and harness (but the harness is out remember) The 88 still used the 86 stator and so did 87! Only year dif stator was 89 and that I'm sure is because they changed from the two barrel plugs to the two prong plug. So harness out, stator out. Only thing left was the flywheel. Just so happen the 86 and 87 had the same flywheel and cdi and 88 and 89 had same cdi and flywheel. So judging by the threads I read and honda numbers I'm guessing the problem lies in the cdi and flywheel matching. Which kinda makes since because the flywheel has the timing on it and the cdi electronics work together with it to time everything just right.

I bought a 86 electronics off a guy a while back that was parting out the whole bike and said it ran. I had the wrong cdi on my 86 to start with and it ran and idled but would kick back once in a while and then it got real bad, like worse. It was also miss firing in the mid to high rpm's. I looked at the electrical and then noticed it didn't have the right cdi. It was from a honda XR200 4 cycle lol. Anyway I put the guys 86 HA2 cdi on and nothing, but one time after I got done kicking and kicking about a second after out of the middle of no where it just made one backfire sound. I was like what the hell i'm not even kicking. Didn't make since till I read that guys post about his 89 and his buddys 89 cdi. So I'm sure if I do the same thing and put this whole 86 electrical on the guy gave me it will work and I will let you guys know but I want to find out where the problem is. Mine is a 86 too so shouldn't be a problem but the person before me already change the cdi so who knows what else and It has a 88 or 89 tank on it too so maybe it is mix and matched parts. I'm going to try the 86 HA2 cdi and put the new used 86 flywheel on and see what happens. If nothing then try his stator he sent me too and see what happens. Ether way I'm going to probably order 1 or 2 cdi's for future because this whole test may be a waist of time. I'm going to look into the cdi's at K&L and BDT while at the same time trying to figure out the compatibility problem with the R's electrical. If it turns out we know what two parts need to match it will save others future problems getting them to run on old OEM parts.

Sorry guys if I got off subject a little but I hate to just throw this stuff away and assume its bad so I might as well try to weed out the problem of what is compatible too on top of getting a new cdi. Whats the point of a new cdi we find works if we don't find out what components need to be with it too. Like i said all harnesses changed every year and they all ran plus all the stators was the same except the 89 which we know had dif plugs so I'm leaning toward the cdi and flywheel matching.

If anyone has tried a K&L cdi and has some input that would be really awesome!!! Or anyone else that has tried these new cdi's BDT is putting out that we don't know what company makes them. Just any possitive input would be awesome. Or maybe some of you have messed around with dif flywheel's, stators, or cdi's etc etc and can put two cents in also! Thank you all very much for your help!!
 
#35 · (Edited)
I agree with Opel. Also any harness will work with any stator/cdi if you make new plugs.

When you say the guy tried a 89 cdi and nothing happened but then switched his whole system and it ran, well that doesn't mean it was the cdi, he could have had a bad ground, bad coil, bad stator, bad harness, etc.

From what I heard the HB9's had the best power curve. Don't be stuck on thinking you have a cdi problem, wiggle some wires, clean plugs and grounds, and put a good known cdi in there.

I had a spark issue for a long time, had an aftermarket cdi and it would kickback like hell, I got a oem used cdi off here and nothing still. Finally got a wiring harness and tried the cdi and bam first kick fired right up, the kick was almost effortless. My bike has mix mixed everything, from cases, to electrical system, but it runs pretty good.


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#36 · (Edited)
Yeah i went and talked to an old cat that runs a local dirt bike atv shop and fixes stuff. Been doing it since the 70s and a admin on one of the honda forums. Anyway he kinda knows whats going on. Long story short he looked through his catalogs and found K and L made a cdi for the 88 to 89. So he called his distributor and the guy said they no longer make them that the last 3 they just shipped out to a BDT. Then my friend that has the shop held the phone away and told me "don't make them anymore and the last three got sent to some place called BDT" i started laughing I told him that was the place that couldn't tell me the brand or who the cdi's was coming from. So the K and L person himself told my buddy that BDT was getting cdi's from them. I called BDT back and the guy didn't act like he knew anything about it lol. Anyway I looked online and sen one guy had one K and L cdi left and ordered it. So what I'm going to do like you said michael is I am going to put the whole 86 stuff that I bought off that guy and see if it runs. I don't know what all was changed on my bike when i got it so I'm going to try to get as back to stock as possible and go from there. If it doesn't work then I'll try the new cdi I bought but I don't know if it will work but I will find out. I know 88 had the same stator as 86 but dif harness and flywheel so I'll see. Long story short I found a guy that has a beautiful R and upgraded to the cr setup and is selling his whole 86 setup and its in mint condition. Also tonight got to looking around on the net and seeing people parting out CR's or blown up CR's and there is a optioin there too. Before I go blowing more money on that whole 86 setup or a CR setup I'm going to see with all these other parts and new ones I can get this going. In the end I might still buy the 86 setup or a cr setup just to have a back up ya know. I got parts coming in this weekend so I will see if I can swap out the crap on mine and get it going by the weekend.

P.S. do you guys know what years will work with what? I read a guy used a 88 wiring harness fom honda on a 86 and like I said 88 has the same stator as 86. I don't know I guess i will find out huh lol. That guy with the 89 said in the end he bough a 89 cdi and stator and then it was fixed. So i'm guess it could have been a bad stator on his too and very well my problem too why its all running funny and then not running. I will let ya know what I find out.
 
#39 · (Edited)
Sorry its been so long but I got a new CR250 ignition last week and had to order flywheel puller and other parts. Im going to try this 86 ignition I bought off this guy first to see if it works before i put the cr ignition on. He sold me the whole setup so im going to switch flywheels first then try to start it. If nothing ill switch stators. Last then try the wire harness. The guy said it all was off a running bike so we will see and then im going to put the cr ignition in. Im going to match serial numbers and such and write all this down as i go so ill report back with anything I find out.
 
#40 ·
P.S. all the research i have done and talking to dealers is that K&L cdi do work but they are discontinued now so there may be a couple floating around some where but not many and the guy on ebay i tried to order one weeks ago and it was on back order and to come find out they didnt even have them in stock so i was refunded my money and since then bought a cr250 2000 ignition.