Thanks Al the Mikuni 34's are the ones i have seen for J's on ebay but no Keihin and google search sows nothing. They are 34mm internal bore so the mystery remains.
May have to ask on vintage site or message Keihin directly.

Thanks for the offer warren but i have vm26 carbs fitted and running.

The only z1000j carbs i have see have a pull choke not a lever like my Keihin ones and similar to mikuni vm26/28 carbs.

Any one have any idea which bike these 34mm Kehin carbs were fitted to??

These 34mm keihn carbs were fitted to a very poor condition Z900 A4 inport purchased from a company that says "runs on easy start" (year right!). Which z if any are these from or bike as the only 34mm carbs fitted to zeds i have seen have a pull choke not a leaver. Cams are standard and pi...

Could be ignition timing, have you checked it using strobe at full advance when revved if it wont idle at low revs.

Did it idle and rev ok before rebuild?

I have everything ready for getting UK reg for 1976 Z900 US import (inc dating letter) but not sure what to enter for type approval on the V55/5. It does ask if its exempt from type approval and to state full reason for exemption. Were these ever type approved if so what is it or do i just state the...

Larger main jet may have been fitted due to exhaust and if air filter has been removed with velocity stacks fitted. You might want to check if air corrector jets have been fitted to carbs on the side of air filter, search on here for air corrector jets for more info. I dont know what marks Z1R cams ...

Oil coolers were often fitted with engine mods such as bigger and or high compression pistons with hot cams which can increase engine temps. When bored out to about 1050 or 1100 for example with standard liners they get a little thin so dont dissipate heat quite as well. If stripping engine would be...

Its different and stands out so like it.

Number plate is a bit pissed tho

There are different lengths of clutch cable depending on the type and rise of your handle bars.

Do you have cable runnung up between headlamp ears?.

Looks like a Henry Abe front wheel to me

Did you short the probes together first before measuring to get 0 ohms as leads and connections can make a difference to readings at low ohm measurments though they normally add a little due to small resistance on connections and leads.

20 years is a long time to have been standing.

Does adding choke make any difference.
Some idle fuel/airways could have been gummed up by stale evoparated fuel. Were the carbs ultra sonic cleaned with all jets and air screws out.

I always time mine on full advance as this is where engine spends most of the time. To me its more accurate and stable strobing at full advance rarther than tick over.

How often and when does it click?

Every revolution of wheel, going over bumps pot holes etc, cranked over round bends?

Could put it on main stand start engine and put into gear to hear it