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VM33 smoothbore 01 Aug 2020 19:46 #832063

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Ok, kinda embarrassed to put this out there, but I picked up a set of 33 smoothbore Mikuni. I think my money would have been better spent on a set of RS34, to late. Dissembled them the other night and they look really good, clean inside no varnish, no stripped threads, with all the internals complete. Here’s the issue and aslo my embarrassing problem. The throttle cable bracket is cut off, the carbs are really no good the way the bracket is cut. I need to locate a bracket. I’m thinking I’m going to rebuild these if I find the throttle cable bracket, and see how the work. I didn’t get hurt to bad on the price so I have room to rebuild and still be less than what I’m seeing them go for. Here’s the bracket I need. Mikuni part number VM33/43.




Red arrow shows where Bubba did the dirty deed.
1976 KZ 900 A4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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Last edit: by Mikaw.

VM33 smoothbore 01 Aug 2020 21:14 #832074

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I would try to rebuild the missing part of the throttle cable bracket.

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VM33 smoothbore 02 Aug 2020 06:55 #832096

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Pics of what you have?
Steve
Z1b1000 1975 Z1b
Opinions expressed by me do not reflect those of the the staff or members
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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VM33 smoothbore 02 Aug 2020 09:34 #832101

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SWest wrote: Pics of what you have?
Steve


I see the pictures, didn’t they post?
1976 KZ 900 A4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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VM33 smoothbore 02 Aug 2020 11:07 #832106

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I see. So he cut off the L where the cables attach? Might be able to make some out of bracket metal.
Steve
Z1b1000 1975 Z1b
Opinions expressed by me do not reflect those of the the staff or members
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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VM33 smoothbore 10 Aug 2020 08:03 #832555

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I know this is not the way a "restore" is done but man. I would get a dremel look through the steel parts pile and rebuild what bubba cut. looks like about 4 hours of work to make it nice or an hour to make it work. I know I'm a bastard chop guy though !

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VM33 smoothbore 10 Aug 2020 16:09 #832598

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Shankkole wrote: I know this is not the way a "restore" is done but man. I would get a dremel look through the steel parts pile and rebuild what bubba cut. looks like about 4 hours of work to make it nice or an hour to make it work. I know I'm a bastard chop guy though !


The bracket and a case of beer are in my possession and I’m heading your way. :woohoo:
1976 KZ 900 A4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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VM33 smoothbore 10 Aug 2020 16:54 #832611

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Rains on the way! hurry! but seriously we can attack that this weekend/friday if your motivated on it.

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VM33 smoothbore 21 Aug 2020 08:02 #833395

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Fairly easy fix for a fab guy. Once you get them going, I'm sure you can get your investment out of them if you don't like the way they run for you. Depending on your state of engine tune, 29s, or the RS carbs would probably be a better choice.
Had 33s on a cammed 1015 once, didn't like them as much as the 29s. They worked much better on a 12.5:1 1260 engine. They were on the verge of being too small for that engine, but had excellent torque. RS36s, or 38s would have woken that one up considerably.
Did y'all get it done yet?
Kawasaki


Someone once told me to marry that motorcycle I was riding ......there's times I wish I hadda listened .

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VM33 smoothbore 21 Aug 2020 15:24 #833433

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BlackZ1R wrote: Fairly easy fix for a fab guy. Once you get them going, I'm sure you can get your investment out of them if you don't like the way they run for you. Depending on your state of engine tune, 29s, or the RS carbs would probably be a better choice.
Had 33s on a cammed 1015 once, didn't like them as much as the 29s. They worked much better on a 12.5:1 1260 engine. They were on the verge of being too small for that engine, but had excellent torque. RS36s, or 38s would have woken that one up considerably.
Did y'all get it done yet?


Thanks BlackZ1R. No i haven't fab anything up yet. I got a good deal on another mostly complete set. Once I have the throttle cable bracket I'll pattern one up. The plan for them is on an 1197 Wiseco kit. with some Norris 407 lift cams. I shopping around to find a good cylinder head guy to do some porting. I have a set of VM26 that were bored out to just under 30MM if the 33's don't work. or are to much. Honestly still acquiring parts of this endeavor. Current my main focus is the 1976 Kz900
1976 KZ 900 A4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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VM33 smoothbore 21 Aug 2020 16:45 #833446

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10-4. That's a damn good idea you got there on fabbing the cable bracket.
Those 33s won't be too big for the 1200, but you're right, you need a good head to flow enough to feed it with the .407s. The bored 26s will just make you stare at the wall on a motor like that. Like putting a Holley 600 on a 12.5:1cr 468 BBC, with a healthy roller cam.
How did the bored carbs run on a stock 900, or 1015?
Kawasaki


Someone once told me to marry that motorcycle I was riding ......there's times I wish I hadda listened .

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VM33 smoothbore 21 Aug 2020 17:24 #833449

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Have never mounted them I bought them from a member here.
1976 KZ 900 A4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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