Where to source Carb rebuild in Europe for xj 650

Hi,
So i've searched the forum and can see a l0t of comments on Xj4ever but i can't find any info on where to source carb rebuild for my xj 650 1982 4ko.
I also these kind of kits from ebay from china for under 40€, i cant post links though

Are these any good?

My xj650 was working ok but hard to start cold, also was keeping the revs high which i believe is air leak and i thought i'd just remove the carbs, clean them and rebuild what's necessary and adjust

Manu

 

Manu don’t touch the eBay Chinese stuff, it will cause you grief.
I’d suggest you don’t need a lot for your own rebuild - float valves, mixture screw o rings, and throttle seals should be about it. There is a guy in the Uk who does mixture screw o rings, cmsnl may do the float valves, but I haven’t been able to find anyone selling the throttle seals. Imported from @chacal - probably €80 to €100... but, ultimately, if you need them, you need them. If you do find a European supplier let us know?

 

Here we are:
https://www.xjbikes.com/forums/forums/xj4ever-supporting-vendor.23

Carb parts are at:
https://www.xjbikes.com/forums/threads/xj-parts-catalog-section-c-fuel-system.44642

No problem with shipping to Europe, except if you are in a European Union country, in which case there is a minimum order value that must be achieved:

06/29/2021 SPECIAL NOTE FOR EU COUNTRY CUSTOMERS: please note that due to recent changes in EU import rules (VAT collection by the exporter and remittance to EU Member States), we are no longer able to ship directly into EU Member States unless the order is greater in value than Euro 150 (parts prices) until this situation is better understood and/or resolved. We are not set up to collect these taxes from customers and until this situation is resolved will not be able to export directly to the EU on small-value shipments:

https://ec.europa.eu/taxation_customs/business/vat/ioss_en

 

Thank you guys, i also found this from wemoto (can't insert as it says it's a spam) but i guess it's missing the throttle seals.
Thanks XJ4ever, yes i am in Finland so 150€ would be minimum order, plus i would have to add tax etc... I'll take apart my carbs over the weekend and inspect what else i would need

Manu

 

NRP carburettor spares in England should have the throttle shaft seals for around £32
NRP motorcycle carburettor repair specialist (nrp-carbs.co.uk)
if phoning, have the carburettor model number (BS32) or whatever yours are. and the bike model
give them a try

 

sweet thanks, i was also told a suzuki part can also be a substitute

Manu

 

So, i have taken one carb apart and it's not pretty... I will attach some pictures and i hope you can tell me what needs replacing and what doesnt.
Also, this is the not the first time these carbs were taken apart and the screws that mount everything were in terrible shape so i will have to replace them for new ones. Maybe hex?

the throttle shaft seals on this carb don't look too bad, but one looks like it could be reused, the other one looks dry. In all honesty i'll just replace them all anyway but my question is what do i replace inside the actual carb?
I'm gonna soda blast them, ultrasonic clean them etc...

Also my main air jet and pilot jets are 55 and 195, i read on Church of clean it should be 50 and 195.

i also didnt have any washer on the main jet, and it didnt want to come out of carb just yet... will have to push it

Any advice is greatly appreciated, i will continue tomorrow (i'm in Europe)

 

If all 4 air jets are size 55, then that may be correct. The #55 jets were used from the factory on some XJ650 Police (37G models, sold in Spain only), and although yours is a 4K0 model, the carbs may have been swapped at some time in the past? If so, you would also likely find #45 pilot FUEL jets, #110 main FUEL jets, and Y-11 needles (the image of the needle is too small to read the size).

Or, it could be that other models bikes came with the #55 air jets that we have not previously identified. There are quite a few "sub-models", intended for very specific markets, that we don't have accurate (or any) information about in regards to jetting. The information that we do publish is verified via factory service or parts manuals, or actual experience in handling those carb sets.

 

Thanks For the very detailed answer on that, i will do more digging, i'm doing one carb at a time cause i don't want to be loosing parts. once they are all cleaned and in bags i will look into it, but to me it seems this was once rebuilt as carburator 1 has number #2 written inside... interesting.

Regarding the other parts, Would you replace the jets? there seems to be a lot of oxydation on the brass parts

M

 

No, oxidation doesn't really affect the jets, if you want them to look pretty just scrub them really well with your favorite cleaner (Brasso or the like; BTW, "modern" epa-approved Brasso is almost useless, the original stuff can still be had over in the UK and possibly the rest of Euroland; it's the good stuff) and a brass or steel bristle-wire toothbrush and they'rready for another 40 years of service.......

 

Thanks, honestly i don't care how they look, i want the bike to run perfect. I am also redoing the valve clearance with the deep carb cleaning.

 

I managed to get these pretty cleaned up

One question is that hole at the bottom. I can make light go through, is it supposed to pass something?
I might try a guitar string

Otherwise I'm happy with the results, I believe with the right seals these should be fine.

 

Ok that wasn't the best pic, here is another one

 

The hole at the bottom is so fuel can go up the brass tube on the carburettor body to enrich the mixture for cold starts. There is a small jet in there. @chacal has a write up on it l believe. Spray carburettor cleaner through the four of them pointing the bowls away from you. You don't want that in your eyes.

 

Great, I managed to clean one. Light goes through. That hole is soooo small.

Will persevere

 

Yes just take your time you don't want to enlarge the float bowl jets. You can boil the float bowls in hot water too if you want, then once cool spray through the jets with carb cleaner.

 

Franz thanks for the help, i have managed to clean 2 out of 4... one of them is gonna go in the boiling pot next.

Could someone give me the yamaha part number for the shaft V seals and also the fuel rail o ring?
I am afraid my order would be below 150dollars so ordering from chacal is at the moment a no go... trying to contact yamaha here directly

Much appreciated
Manu

 

what about NRP carburettor spares, i suggested earlier, probably below £35GBP
they are very helpfull and will know the seals you need

 

I contacted them, but they never got back to me. Ill try again
Manu

 

I couldn't see them on their website? Have you bought some from them?

 

yes, i couldnt find mine (xj600) so i phoned and they had them, my carbs are BS32's.
ive got 3, xj600's , and have ordered 3 sets, over the last10 years

 

They finally reached out, they are out and have stock back in february... too late for me

 

I have an xj650 on bs32s, and haven't felt the need,to replace the seals - yet.
However, the 650 seca I have on Hitachis might be more in need of a set.
Job for next year then.

 

I read on this forum about the "X" rings from McMaster Carr. $8.00 for 100 of them. I used them in my carb rebuild and have no vacuum leaks or sticking throttle on an XJ650k with Hitachi's carbs. https://www.mcmaster.com/90025K135/
BTW I also boiled all my carb parts in lemon juice. It left them a bit dull but very clean all varnish was removed.

Jeff

 

very cool, did you use these as o rings for the fuel ramp of throttle shaft seals?

 

Could someone be so kind to give the dimensions of the throttle shaft seals and o rings for the fuel ramp?
I can only measure the ones i have pulled off but some have dried and i was hoping with the right dimensions i could try to source this to my local o ring dealer.

Thanks a lot everyone

 

what exactly are you calling "fuel ramp"?
the throttle shaft seals are either "v" ring or "x" ring, but maybe good quality "o" rings might be ok

 

I measured the ID of the fuel supply pipes by measuring the the diameter of the groove then I measured the diameter of the fuel inlet in the carb casting subtracted and divided by 2 to get the thickness of the O-ring then just speced the ID and thickness to find suitable O-rings for the fuel supply. I believe I ordered 3 sizes to what I speced just to make sure I would get what I needed. I do not know exactly what the sizes are for your carb's are so just read the spec it will give you the ID and the OD. They were like $8.00 for 100 of them much less than the original V seals and I did not have any vacuum leaks using these.

 

Great ok, that makes sense ! Has anyone measured original v shape throttle shalf seals on their hitachi carbs for xj 650 4k0

just to reference