morning all.

R1_pete has been kind enough to lend me his balancing kit. Which im very thankful for. (although he has just come back from greece which im well jealous about)

Anyway.

I have got some new carbs for the zzr1100 as i had a damaged diaphragm and it worked out cheaper.

i have fitted the carbs and it starts and runs....

It needs balancing then i need to fit the air filter which im going to do when the balancing is done.

how do i balance these carbs?

the balancing kit i have is simular to these here.

http://www.hydroponicsonline.com/store/Carburetor-Synchronizer-carb-sync-Gauge-CB-550-650-750_220434242707.html

i dont know how to balance the carbs on the zzr1100 c model carbs.

anyone know what i need to do?

I have uploaded a video of it the engine running. (i know it dont sound perfect but it is running better than b4.)

http://www.youtube.com/watch?v=WC00r_RI3vo



cheers



Dave

Hi Dave

Download the service manual from http://www.blackbears.ru/index_en.php?get=manual

It looks like all the info you need is in there.

One carburettor is not adjustable so the others are balanced to that.

It doesn't matter what the readings on the gauges are as long as they are all the same (or as close as you can get)

HTH

Neil

on mine it went something like this.


Connect up the gauges to the 4 carbs.

Get engine to around 2krpm.


Twiddle the little valves on the hose to the gauges so that the needles twitch and are clearly dynamic, but not flying all over the place.

By this time the engine will be warm, which is a good thing.

Twiddle the balancing screws to get 4&3 balanced.
Adjust the idle back to 2k
Twiddle the balancing screws to get 1&2 balanced
Adjust the idle back to 2k
Twiddle the balancing screw to get the two pairs balanced.
Adjust idle back to 2k.

It is worth reving the engine a bit, not just to annoy the neighbours, but also to let the adjusters settle a bit.

Then repeat all the above steps to higher precision.


One more thing to bear in mind: There is some interplay between the idle mixture screws (one per carb, normally on the underside) and the balance. So, before you do all the above you might want to make sure the idle mixtures are where you want them.


You might want to drop the RPM to nearer your standard idle and repeat. Its difficult to get poorly balanced carbs to balance at low RPM without stalling, so first round should be at 2k or so.




This same method works for TBI's as well. If you have the manual then that will be better than my attempts at explaining.



It is quite a gratifying job,


Matt

might sound silly but where do i attach them to?

:O)


dave

On my gsxr Mikuni carbs there was a rubber cap (8mm o.d.) on top of a breather on the black cover.

Like as the top left of this picture

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In my case they were wire-locked on.

I don't know about how you do it with zzr1200 carbs, but there is likely to be something similar.


Did you manage to get hold of the manual, I think that would make best sense.

Matt

On the zzr1100 you have 4 x small brass vacuum take offs situated between the carbs & the head, can't remember if they are actually on the front (head side) of the carb or on the rubber joininers to inlets but certainly in that area

ill go have a look.

so thanks all.

i downloaded the manual but its not in english so doesnt make that much sense :O)

ill go have a look and let you all know.

cheers guys.

PS. im spraying my car soon and im practising on some ali. i kid you not its bloody hard :O)

dave

On the ZZR11 the vac take offs are on the rubber connectors.

On the installation I did I drilled the manifold runners and tapped them m5, then screwed hobby mig welder tips in, and connected the gauges to them.

I also used those take offs for MAP MJLJ, but no reason not to take them out and put short m5 screws in, with either fibre washers or a blob of gasket gloop, to blank them.

I can't remember which carb has the idle adjustment on, I think it was number 2, but you balance out from that one using the spring loaded screws on the throtle shaft connectors.

The Greek tan is fading along with the holiday memories.....

[Edited on 6/11/10 by r1_pete]

You've downloaded the wrong version.

I downloaded the english version just before my previous post.

Neil

cool ive found them and im sorted... thank you all.

dave