the holy grail of carbs

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30 Jul 2010 09:55 #387008 by cobura
Replied by cobura on topic The holy grail of carbs is EFI
if u are interested, i can get u any of the parts u mentioned. I'm just not sure how to go about making transactions safely. i dont have a credit card, so paypal is not an option.

1979 KZ650B3

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  • ready2ryde1985
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  • got to love these kzs
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30 Jul 2010 11:50 #387030 by ready2ryde1985
Replied by ready2ryde1985 on topic The holy grail of carbs is EFI
I will pm you !!! thanks in advance.

84 kz 700 a1
82 kz550 ltd

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  • porchev914
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  • Whats that? Half of my swingarm is missing?!?!?
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30 Jul 2010 14:26 #387058 by porchev914
Replied by porchev914 on topic The holy grail of carbs are Keihin FCR?
So the general japanese consensus is that the FCR carbs are better than CR specials but only marginally, AND $300 more expensive..... and no matter what, the keihins are better than the Mikuni RS series?

FRANKEN Z!
1978 KZ1000 A2A with 08'Speed Triple SSSA and '06 GSXR1000 front end

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  • muddy1
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  • 1980 Kz1000 LTD B4
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30 Jul 2010 17:18 - 30 Jul 2010 17:25 #387085 by muddy1
Replied by muddy1 on topic The holy grail of carbs are Keihin FCR?
Poor peoples Holy Grail

1970 SL-70
1972 CB 750
1973 Z1
1976 YZ 125
1976 KZ400
1979 KZ400 LTD
1980 KZ1000 LTD B4
1984 YZ 490
1989 750 Ninja
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Last edit: 30 Jul 2010 17:25 by muddy1.

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30 Jul 2010 18:30 - 30 Jul 2010 18:36 #387104 by Patton
Replied by Patton on topic The holy grail of carbs are Keihin FCR?
Mikuni VM29 Smoothbores

Picture is courtesy of Z1 Enterprises.

Good Fortune! :)

[Click on image to enlarge view.]


1973 Z1
KZ900 LTD
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Last edit: 30 Jul 2010 18:36 by Patton.

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30 Jul 2010 18:33 - 30 Jul 2010 18:35 #387106 by Patton
Replied by Patton on topic The holy grail of carbs are Keihin FCR?
To find the carb info at Z1E website:

Go to Z1 Enterprises website --- Click > www.z1enterprises.com/

Then go to Reference Info, and click on Kawasaki;
and next click on Z1 KZ900 Carb I.D. Guide.

Scroll down to "Mikuni 29mm smoothbore carbs" to enjoy and learn from the pics and info.

Good Fortune! :)

[Click on image to enlarge view.]


1973 Z1
KZ900 LTD
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Last edit: 30 Jul 2010 18:35 by Patton.

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30 Jul 2010 18:37 #387108 by cobura
Replied by cobura on topic The holy grail of carbs are Keihin FCR?
porchev914 wrote:

So the general japanese consensus is that the FCR carbs are better than CR specials but only marginally, AND $300 more expensive..... and no matter what, the keihins are better than the Mikuni RS series?


The general consensus is that FCR carbs provide more power than the CR specials, but which is overall better is split 50/50. As far as Mikuni carbs, i have yet to actually see a set of mikuni's except for stock carbs on stock bikes.

1979 KZ650B3

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  • larrycavan
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31 Jul 2010 20:42 #387345 by larrycavan
Replied by larrycavan on topic The holy grail of carbs are Keihin FCR?
cobura wrote:

porchev914 wrote:

So the general japanese consensus is that the FCR carbs are better than CR specials but only marginally, AND $300 more expensive..... and no matter what, the keihins are better than the Mikuni RS series?


The general consensus is that FCR carbs provide more power than the CR specials, but which is overall better is split 50/50. As far as Mikuni carbs, i have yet to actually see a set of mikuni's except for stock carbs on stock bikes.


I use the FCR on ATV builds and the CRS on KZ 4 builds.

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  • porchev914
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01 Aug 2010 02:54 #387365 by porchev914
Replied by porchev914 on topic The holy grail of carbs are Keihin FCR?
Excellent Larry. Now is that because the FCR carbs only come in one size (35mm) from Sudco, or is it because they don't offer much of a performance over the CR Specials for the additional cost?

FRANKEN Z!
1978 KZ1000 A2A with 08'Speed Triple SSSA and '06 GSXR1000 front end

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01 Aug 2010 04:45 - 02 Aug 2010 09:29 #387369 by Polar_Bus
Replied by Polar_Bus on topic the holy grail of carbs
Downdrafts "the holy grail" ? I think that's a little over-ratted, virtually every drag racer/performance nut runs RS Flatsides

Bikes:
'84 GPz1100
'06 HD Fatboy
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Last edit: 02 Aug 2010 09:29 by Polar_Bus.

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  • larrycavan
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01 Aug 2010 06:45 - 01 Aug 2010 06:47 #387376 by larrycavan
Replied by larrycavan on topic The holy grail of carbs are Keihin FCR?
porchev914 wrote:

Excellent Larry. Now is that because the FCR carbs only come in one size (35mm) from Sudco, or is it because they don't offer much of a performance over the CR Specials for the additional cost?


The FCR singles are generally 41mm. No flat spots, no bog...just nail it and hang on :)

Drag Racers usualy use Lectrons. Awesome carb for that but not much good on the street.
Last edit: 01 Aug 2010 06:47 by larrycavan.

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