RS34's on KZ750 ?

  • M357.5
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07 Aug 2011 15:52 - 07 Aug 2011 15:53 #467509 by M357.5
RS34's on KZ750 ? was created by M357.5
Hey carb gurus, I have a set of Mikuni RS34 flat slide carburetors and was thinking about using them on my 750 project. How well would a stock 750 deal with a carb this large/radical on it ? Or would I be looking at aftermarket cams and a big bore kit + porting the head to make these work ?

I'd love to use them, but dont want to put a ton of money into the engine just to be able to.

83 KZ750L X2 + goodies = Project
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Last edit: 07 Aug 2011 15:53 by M357.5.

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  • mark1122
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07 Aug 2011 16:30 #467516 by mark1122
Replied by mark1122 on topic RS34's on KZ750 ?
Pretty simple answer, since u already have them.:)
Theoretically the specs would say these are too big, but Mikuni does recommend them for 750cc’s.
a lot of guys use them when they got with 810cc kits. i would go ahead and try them since u have them anyways. Nothing to loose, lots to learn.
what u will experience is a loss of low end power :( and a gain in top end power :evil: . if that makes u say wow :woohoo: ! then your good. if it make u say , this sucks :angry: then u know what to do.

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09 Aug 2011 19:02 #468063 by zed810
Replied by zed810 on topic RS34's on KZ750 ?
i ran rs34s on my z810 (now run bs34s) should be fine as long as you can ride them properly don't snap the throttle at low to mid revs as it will just bog you have to "feed" the carbs in, but for high end performance can't beat them! and they look so god damn cool!

1981 z750e1 gpz 750a1 tank and side panels 810 bore kit web cams mikuni bs34 vance and hines pipe

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09 Aug 2011 20:09 #468073 by otakar
Replied by otakar on topic RS34's on KZ750 ?
WAY TOO BIG. RS34 and BS34 are not the same throat size. BS34s only have a 31mm throat opening. I doubt you will produce enough vacuum to make them run properly. Normally they would be way too big for even a stock 1000cc motor.

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10 Aug 2011 07:42 #468168 by zed810
Replied by zed810 on topic RS34's on KZ750 ?
RS34S will WORK ON A 750 BUT NOT SUITED TO A STANDARD ENGINE YOU WOULD NEED QUITE A RADICAL TUNE TO USE THEM PROPERLY.

1981 z750e1 gpz 750a1 tank and side panels 810 bore kit web cams mikuni bs34 vance and hines pipe

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