Author Topic: CR carbs for the CB750  (Read 1063 times)

Offline captaink

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CR carbs for the CB750
« on: April 19, 2017, 05:20:59 AM »
Hi, I was looking for suggestions for CR carbs for my CR750 replica.
Engine is 1977 836cc big bore kit but standard cam.
How would they perform as compared to the original carbs performance wise although I'm not looking for more speed they would be cosmetic.
Is there a CR carb model range ?
Regards Keith
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline Bryanj

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Re: CR carbs for the CB750
« Reply #1 on: April 19, 2017, 07:03:52 AM »
As I remember CR carbs there is NO tickover provision and they are a pain to tune correctly

Offline CR21

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Re: CR carbs for the CB750
« Reply #2 on: April 20, 2017, 09:52:53 PM »
Interested in this thread  :D

Offline philward

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Re: CR carbs for the CB750
« Reply #3 on: April 20, 2017, 10:58:48 PM »
I've looked into this question - theres a lot of info on the .net site - I concluded that unless your using the bike for racing (constant high revs), they don't work well at lower/middle rev range. If you are using the bike on the road (like I will be), with the cr replica exhausts fitted, you won't be riding at constant high revs - have a listen to the sound level at high revs and you will see why I say that - great sound but not for too long!
Current Bikes:-
Honda CB750K2 (1975)
Honda CB500K2 (12/1972)
Honda CR750 Replica (1972)
Honda CB350K0 (1969)
Kawasaki ZZR1100D3 (1995)
Kawasaki ZZR250 (1990) Project (Going on eBay ASAP)

Offline captaink

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Re: CR carbs for the CB750
« Reply #4 on: May 01, 2017, 01:25:23 PM »
My other CR replica has CR carbs and seems to run ok but the bike is an animal to ride, 4000 rpm tickover and the through pipes are a ear defender job.
Not something as a daily ride  ;D ;D
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

 

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