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cr750 Replica Carb settings starting point

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Greebo:
Mine has a rebuilt stock motor K6 with K7 PD carbs, I am running 138 mains, stock idol jets, needle on last notch [highest point]

When we first fitted the bigger main jets it was still lacking fuel & it was jumping & jerking like a Kangaroo, we gradually move the needle a notch at a time but it finished up on the last notch & then Bingo cracked it.

with your big bore kit K&N's & straight through exhaust I am guessing you will be playing with it for a while before you get it near enough spot on

 

philward:
I am expecting that too Greebo - it will probably be next summer before I get to run it on the road but just need a starting point while building carbs. There's loads of info on the set up with CR Keihin race carbs (matching the exhaust I'm using) but very varied views on how they work effectively for road use - and they are bloody expensive! This will be a ride to biking venues type bike and so won't be used in real anger on the road - you wont be able to with those open exhaust!

Greebo:
Phil I do hope you get those CR carbs sorted, from what I have heard from guys who have tried them they are only good for the track & even then can be a pain. apparently & again from "hear say" the adjustment screws are very difficult to get at unless you take the carbs off.
you may find that you will be going to more venues with it on a trailer rather than riding it.

Good Luck with it & keep us all posted

philward:
I will be sticking with the standard carbs - too much uncertainty on how the CR type carbs perform on the road - especially when you have to spend a 1000 squid!
Next is getting the exhausts welded up in correct position - unfortunately, they are not just 'bolt on'
Cheers

Greebo:

--- Quote from: philward on March 22, 2017, 11:45:11 AM ---I will be sticking with the standard carbs - too much uncertainty on how the CR type carbs perform on the road - especially when you have to spend a 1000 squid!
Next is getting the exhausts welded up in correct position - unfortunately, they are not just 'bolt on'
Cheers

Quote "I will be sticking with the standard carbs"

Good Call Phil
--- End quote ---

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