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Building a rack for CR's

Posted: Wed Mar 11, 2015 6:40 pm
by jkotsi
I haven't had any luck finding a set (2 or4) of used 31mm CR's so I'll be buying a pair from Sudco.

Does anyone know the recommended jets/needles/clip height for CR's?

79 intake cam, 6-2 header, Dyna ignition, V-stacks, otherwise stock.



Cheers Jim

Re: Building a rack for CR's

Posted: Fri Mar 13, 2015 8:50 am
by jkotsi
Looking at what others have built there is a choice, either follow Honda's layout and use same size carb boots and angled rack or assemble a straight bank of carbs and use 3 different sized boots.

Talked to Bill at TIMS yesterday, he can provided the 3 size boots, the spigot will need to be sized to fit.

Alternately I will need to find straight boots and the rack will follow the stock angle. Varying the lenght of velocity stacks should even up the intakes.


Is there a preferred layout? Would you expect to see any difference in performance?


Jim

Re: Building a rack for CR's

Posted: Fri Mar 13, 2015 11:45 am
by EMS
The main problem with the angled set-up for CR carbs will be the throttle linkage. All that I have seen were done in a straight line with different boots.

Re: Building a rack for CR's

Posted: Fri Mar 13, 2015 12:14 pm
by jkotsi
Didn't correct for the unequal intakes but it shows the idea.



Image

Re: Building a rack for CR's

Posted: Fri Mar 13, 2015 3:28 pm
by EMS
:text-bravo: Really nice!

Re: Building a rack for CR's

Posted: Fri Mar 13, 2015 3:52 pm
by jkotsi
They look great, not my work but one version I am considering.

This is the other layout. An easier build but more money for the carb boots and matching spigots.
Image

Re: Building a rack for CR's

Posted: Mon Mar 23, 2015 7:18 pm
by r48
Just bought FCR33 from Japan.

Re: Building a rack for CR's

Posted: Mon Mar 23, 2015 8:18 pm
by EMS
Interesting set-up! Reminds me of the old XKE Downdraft SU carbs... :lol:

Re: Building a rack for CR's

Posted: Mon Mar 23, 2015 8:45 pm
by steve murdoch icoa #5322
r48 wrote:Just bought FCR33 from Japan.

r48, you gotta give us a bit more info on your bike than just a pic of the new carbs. Please!

Re: Building a rack for CR's

Posted: Tue Mar 24, 2015 12:34 am
by NobleHops
That fuel line is making my eye twitch.

Re: Building a rack for CR's

Posted: Tue Mar 24, 2015 9:22 am
by jkotsi
Very nice set of flat sides. Uniform boots and stacks, are you planning on changing he stacks to match the intake lengths?

Re: Building a rack for CR's

Posted: Tue Mar 24, 2015 10:02 am
by EMS
jkotsi wrote:Very nice set of flat sides. ?
..slides... :shhh:

Re: Building a rack for CR's

Posted: Tue Mar 24, 2015 10:06 am
by jkotsi
LOL, using my phone without glasses.

Re: Building a rack for CR's

Posted: Tue Mar 24, 2015 1:19 pm
by EMS
jkotsi wrote:LOL, using my phone without glasses.
Oh man, I know what you're saying. :roll: Cannot do anything anymore without reading glasses.... :doh:

Re: Building a rack for CR's

Posted: Sat Mar 28, 2015 4:45 am
by r48
My 1979 CBX first time fire up with FCR33
http://youtu.be/qiErgS9kN2A