New / old Z1R member

wireman,
My mate has a 1200 MTC, wild web cams, 38 carbs, valves sunk into head (2mm oversize) and we are dead level in every department and yet my mods are minor in comparison


I have no doubt the response, fuel economy, is due to these carbies, I had GPZ900R carbs (34mm)before these but the difference was noticeable when I fitted the ZRX1100 (36mm).

I had the adapters machined for the standard rubber inlets (GPZ900R) and matched to ports. there are two bars hold the carbies together, I welded a spacer (forgot how big) to make the space between the centre carbs larger, the plastic T piece can handle the extra spacing as is. The choke actuator is thin and can be more difficult to weld. The standard ZRX carbs had a small 98 main jet and 38 minor jet, I changed the main to 132 and minor to 40 on my first try and it worked straight off (obviously other bikes will be different).

For the street these in my opinion will be better than the racing carbs fitted to my friends Z900, your choice.
Good luck

Gday Bozo...just checked out your thread.

Glad to see another Z1R owner on the site.

Luv what mods you've done to yours...but still retaining the overall old-school look.

All the best ...Dave.

Oz Z1R, can I assume you're an ozzy if so which state
Your Z looks good (from what I can see) have you got
Pictures of it in these forums, if so where?
Thanks for your welcome.

kzrider.com/forum/10-new-members/461778-...tings-from-australia

Thanks Bozo for the detailed pix and drawings.

Just to make it clear, I'm not saying that the CV's are a better carby, for racing with richer mixtures the fixed slide carb is probably better with quick response, but for road/ touring/ economy I have no doubt the CV is better because the slide responds to your motor requirements/ intake.

Bozo wrote: Oz Z1R, can I assume you're an ozzy if so which state
Your Z looks good (from what I can see) have you got
Pictures of it in these forums, if so where?
Thanks for your welcome.

I'm over in rum country mate "Bundy" Queensland.

Here's a link to my resto thread..... kzrider.com/forum/11-projects/461785-oz-zir-mk2-resto-project

Is that Cairns, because once every few months I go to work at the naval base to help the little possums fix/ service equipment.

Bozo wrote: wireman,
My mate has a 1200 MTC, wild web cams, 38 carbs, valves sunk into head (2mm oversize) and we are dead level in every department and yet my mods are minor in comparison

Attachment DSC08462.JPG not found

I have no doubt the response, fuel economy, is due to these carbies, I had GPZ900R carbs (34mm)before these but the difference was noticeable when I fitted the ZRX1100 (36mm).

I had the adapters machined for the standard rubber inlets (GPZ900R) and matched to ports. there are two bars hold the carbies together, I welded a spacer (forgot how big) to make the space between the centre carbs larger, the plastic T piece can handle the extra spacing as is. The choke actuator is thin and can be more difficult to weld. The standard ZRX carbs had a small 98 main jet and 38 minor jet, I changed the main to 132 and minor to 40 on my first try and it worked straight off (obviously other bikes will be different).

For the street these in my opinion will be better than the racing carbs fitted to my friends Z900, your choice.
Good luck

I was referring to the other guy wanting to use same carbs,Im sure your combination can take full advantage of them.
I ran 38 flat slides on my 1327 for a while,they worked really good on the top side but 33s worked better for running around town.

Bozo wrote: Is that Cairns, because once every few months I go to work at the naval base to help the little possums fix/ service equipment.

No mate...Bundaberg is 4 hours north of Brisbane.

I've placed a pic in my resto thread that may help with your rear foot-peg mounts.

Only 1 word for this bike.

WOW !!!!

u have managed to blend the old with the new in an extremely nice manor.

how did u manage to fit the kz throttle cables into the busa control housing? custom Motion Pro cables?

Congrats on a fine build.
Thanks for sharing.

Thanks Mark, this forum is excellent with some really great people, I aso belong to another bike forum (guess)and they seem to be in a bitch mode where they correct spelling mistakes and if you ask a question in a wrong way watch-out.
Anyway, in answer to your question, I think the cables I got were from a VTR250 honda (I'll check tonight), they fit straight in. I did have issues trying to stop them from binding when you turn the steering on full look either way hence a bit of slop on the take-up (but not annoying). But don't forget I have ZRX CV cabies and not the standard type