New owner, but a familiar problem!!
 

Hi to all, looks like a very well informed and organised forum.

I've just bought a "project-Ha!" 1984 43F XT600. No real problem other than at some point the 43F motor was replaced with a 3AJ motor. I didn't pay too much attention at the time of sale when I noted the lack of a drive chain, but after reading the threads from Rob XT600 and Redroadster, and after squinting down the line of the chain run, I now know why. DOH!

Redroadster, could you please send me some pictures of the work you did with the output shaft? I would be most grateful for anybody's comments in this area. By the way, it's definately a 43F frame.

From what I can tell from the detailed stripdown today, I don't think the motor transplant was ever successfully completed. I have a mish-mash of 43F components and some 3AJ components.

The loom looks like the original 43F but I do have the 3AJ right hand control and associated wiring and solenoid. Does anybody know which of the following componenets I should have, and are any interchangeable between the different motors?

Rectifier - I have a 34L - A0 which I think is a 43F component
CDI - Marked up as 34L-50 - Again I think this a 43F component

Carburettors, currently marked up as 43F together with the airbox. Although I do have a complete 3AJ airbox as well. Does this fit into the 43F frame?and does it work with the 43F Carbs?

Is the revcounter on the 3AJ electronic? as I cannot see where the mechanical revcounter cable/drive attaches to the 3AJ motor?
If so, What else am I going to have to find to get the rev-counter working?

Loads of questions, I know, and this is only my first post!! what a cheeky git I hear you say?

Thanks in advance

Fatbloke:helpsmilie:



I

Good luck with your little project.:thumbup1:
These bikes are generally fairly easy to work on and sort out - if you know what you're doing.

There's lots of info on here - if you can't find what you are looking for just ask!!!

the airbox wont fit but the rectifier should be ok
if it still got the 43f main loom its going to need modifying to use the electric starter switch on the handle bar.
i've put a completly different rear end on my 97 bike wheel spacing can cure a lot of alignment issues:thumbup1:
the rev counter is elecrtonic

Thanks for your comments, looks like it's going to be quite a project. does anyone know where the feed for the revcounter comes from? is it the cdi?

yes its fed off the cdi box

If its a 3AJ motor the rev counter is cable driven from the cam. There will either be a drive on the rocker cover on the right hand side or it may be blanked off.
Is it a 3AJ engine or does it just have 3AJ stamped on the cylinder?
All air cooled XTs from about 89/90 use the 3AJ cylinder and usually a 2KF head.
To find out what engine you have you need to read the first letters from the long engine number.

Thanks Bolla, the main engine number has mysteriously been filled with filler at some point?, the number on the side is 3AJ, and there does appear to be a 2p sized black plastic plug on the top right of the rocker cover. does this unscrew?

Rev counter drive pic
 

Hi fatbloke,

I've taken a photo of the rev counter drive unit on my 3AJ. Hopefully i can get the link to work.

http://i208.photobucket.com/albums/b...o/IMG_0011.jpg

oops my bad i was thinking about the rev warning light i changed my dash to electronic so long ago i forgot about the rev counter drive on the cam i'd taken mine off.

Roamer, thanks that clears up loads.

Wolfzero, that's just porn.

thats nothin compared to the rest of my bike :yes:
those bars you can see are magura fat bars :drool:

EEEK

Sounds dodgy !

Wolfzero,

for the love of god don't show us any more.

Tedmagnum,

Yeah, when i found that I just looked away and pretended it never happened. The V5 does say engine number - not known. So yeah, I don't know.

better not show you the r6 swingarm or the WP front forks i fitted then :thumbup1:

me thinks u should :eek3:

You may have problems crossing certain borders with that engine number issue.

It all sounds very fishy, and you don't want to be connected to any form of bike thievery whatsoever.:thumbdown:

the v5 doc might not have an engine number on it anyway as the bike sounds like it was previously registered outside of the uk.:rolleyes2:
i have a couple of bikes that are grey imports and they are the same,
both bikes are completely legal and legitimate. :thumbup1:

Caminando, I feel I must reply to your post, and absolutely agree with you regarding bike theft. However, without an engine number, there is no way I can verify if the engine is "fishy" or not. Given the chap had a valid registration document, and had owned the vehicle for over two years, I can only assume it's as legitimate as it's going to be.
As for border crossings, I'm not that adventurous off road, and certaintly not on a bike over 25 years old, and as a clincher, the border crossing between England & Wales is fairly easy these days!!:thumbup1:

Anyway, back to the engine. I need help in identifying exactly which engine it such that I can get the correct ignition. It is gunmetal grey in colour, has a blanking plate where the kickstart is, has a blanking plate where the mechanical tacho drive is, and is fitted with the oil pipe bracket at this location. I do have some other spares that came with it including an engine protector which is tubular in grey and not like the 43f plate version. As said before, the barrell is a 3AJ00.

Does anybody have any ideas? If anyone does know, what CDI/rectifier/coil do I need? and does anybody need 43F spares of these as I have a complete set, unless of course they will work with whatever i've got.

Congratulations on reading this far.

Thanks

Don't know if anyone's even remotely interested anymore, but after spending the evening looking at various wiring diagrams and the wires coming out of the motor, i'm now fairly convinced that the engine is a 3tb, in which case i've deduced that i now need to find a TCI to replace the CDI i'v got, together with the applicable rectifier. Can anybody help?

yes its a 3tb motor.went to wales a few years ago to do the cambrian rallye, i managed to sneak past the border gaurds while they were cleaning their guns :rofl:

Sounds identical to my engine - 3TB.

They have now removed my favourite sign on the Wales/England border (A449 near Monmouth):

Welcome to Wales
Croeso y Gymru
Brits Out! (in spray paint)

As the Welsh were the original British, it seems a bit self-defeating.

Thanks, for your advice, anyone know where there is a good source of second-hand xt spares?

CDI's
 

Sorry I'm late - the CDI's on the older XT's and the newer ones are identical in the sense of ignition mapping. What rests now is to find out whether the stator in the engine is one for TCI (3TB) or CDI. If it is the last, you can make the CDI /stator combination work. If not, consider to install a CDI suitable stator. You will probably have to change the alternator cover for that.
The beauty of the above solution being that you do not have to chnage the wiring loom from CDI to TCI ignition.

To identify stator: the TCI ignitions have one coil, the alternator, and one pickup (TCI owners please confirm). The CDI stators have an alternator coil (3 white wires), a charging coil for the ignition (red and brown wires coming out) and two pickup coils (three wires coming out).

Good luck
Auke

Thanks aukeboss, it is a 3TB.