Carb Secondary Main Jet Help 1983 kz550 gpz h2

Greetings,
Need help identifying the secondary jet on my 83 kz550 gpz h2. its a slotted head jet thats stamped as #64. The part is long discontinued by KZ and no one Ive spoke with can ID this jet or locate one! Partzilla lists it as 92063A-1122 JET-MAIN that is screwed over a nozzle. I just finished a carb rebuild and rejetted the carbs with a Dynojet stage 1, and found the previous owner had stripped the slotted head off. I was able to spin the jet out with a reverse drill bit and did not damage the carb but just need this one jet to get the bike running smooth! If anyone knows where I can source this part I would appreciate the help after doing a lot of digging I may be missing it online because of the part name(Main jet? Leak jet?) I included the diagram, the jet is 92063A.. And some pics, thanks guys

is there anything on the carb to identify manufacturer ? eg Keihin, Mikuni, TK etc ?

Once you find manufacturer then you could check jetsrus.com

Kinda looks like one of my Keihin jets which I got from Z1Enterprises. Took a quick look and they dont list a #64. Doesnt necessarily mean they dont carry that size.

I believe Mikuni and Keihin use a different numbering system so same # can mean different sizes between manufacturers.
I know nothing about TK carbs. loudhvx is the resident expert on those

Good luck

Thanks, JR. Unfortunately, I don't have any info on those intermediate jets for his TK26 cv carbs.

loudhvx wrote: Thanks, JR. Unfortunately, I don't have any info on those intermediate jets for his TK26 cv carbs.

Ok.
Bummer.
So i just dug out some keihin main jets and measured and get aapox 6.86mm diameter an 8.56 mm length so it looks like TK carbs use something else. TK brand jets.
Try jrtsrus

Are you running stock jetting with these carbs and just looking for a stock replacement? If you change over to the 1984-1986 ZX550 TK27, they don't use a secondary jet. Changing to these carbs is a direct bolt on, No intake, air box(or pods),or throttle cable change needed.

I am just wanting make sure but these are the jets for all the TK carbs?

www.jetsrus.com/a_jets_by_carburetor_typ...eikei_selection.html

khungerf wrote: I am just wanting make sure but these are the jets for all the TK carbs?

www.jetsrus.com/a_jets_by_carburetor_typ...eikei_selection.html

Those are mains and pilots for some TK carbs, but they are not showing the jet you need in that link.

Is it accurate then that you cannot get any Jets for the the TK carbs? I thought those jets worked as replacements for all TK carbs?
My carbs are TK27 and I have not removed them yet to measure the jets.

If I cannot re-jet because of lack of availability I will probably start looking for some replacement carbs.

sorry, if this is a bit of thread-jack, but it seems related.

No, that is not true. You can now get some jets that are swappable with TK jets. Some will look different, but will work, and some will look like exact replacement parts.

The ones he is looking for are the intermediate jets. Jets R us does not seem to have them, at least not in that link.

Jets R us might have mains and pilots, but I'm not familiar enough with the TK26 and TK27 carbs to know if those in that link look identical or not.

Regarding TK22 carbs (not for Kz550H or Zx550A):
For the TK22 carbs, it appears Jets R us now have the pilots (I have not yet inspected them), but not exactly in the original stock size 32. The closest they have is 32.5, which should be fine as a standard replacement for stock.
They don't show mains for the TK22's in the stock sizes of 92 and 94, but you can probably get close replacements from Keihin or Dynojet.
Most TK22 rebuild kits have the stock sizes 32 and 92.

I spoke with Jets R Us and he did not have the intermidiate jet with the slotted head for the TK-26 carbs. Mikuni jets do swap over from TK sizes but thats the main jets, I have a buddy who gave me a huge box of mikuni jets but I could not find one to fit that secondary main.. So last ditch I sent measurments to Jets are us but he was not able to find one in stock, so I looked through his inventory and found a jet that was just about the same dimensions (off by .1 mm length) from keihin. So ill give it a go and see what the verdict is.

I did a dynojet stage 1 kit, and im trying to keep the stock carbs even though CV carbs are slowly making me go insane.

No eBay APP ID and/or Cert ID defined in Kunena configurationIf the slotted head is stripped off, it should still work??? I believe those carbs were only used on the 1982 and 1983 GPz550.

EDIT:
As always Ebay Sellers do not always advertise things correctly. Look at these carbs for sale, and ask the seller some questions about them. These might be the "Droids" you are looking for. :woohoo: Idle knob in the middle, and that fact that they are black carbs to me would be an ID that they are TK26. Maybe the seller will remove one of the bowls and add a picture. If it shows a plug cap that covers that secondary jet, you are golden.

I might have a spare, I'll have a look and report back tomorrow. These jet slots are easy to mash up with a bad fitting tool or PO bodging.

If so pm your adress and you can have it for free ok.

As above, even if the slot is stuffed it shouldn't affect it's airflow characteristics.


p.s. the 27 and 30 mm carbs are the same size, strange but true. Possibly the 26 too. It seems the Japs have a different way of measuring them.