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Keihin CR Special Smoothbores
Posted: Thu Nov 05, 2020 7:17 am
Author: rpeters
Anyone happen to have a set that they want to part with??
Thanks
Rob
Re: Keihin CR Special Smoothbores
Posted: Thu Nov 05, 2020 1:12 pm
Author: RALPHARAMA
Having had my fingers burned by a set of CRs on a mates ELR I would strongly advise against them. Myself and the Dyno guy gave up in the end and fitted a set of 34mm flat slides - worked straight out the box and were straight forward to set up perfectly on the dyno.
CRs - never again. My mate was recommended to have CRs on a forum, probably this one. I have talked to a load of professional tuners since and they all sign from the same hymn sheet! When I told Tim Blakemore what my mate had ordered he warned me of the pain and grief I was about to endure and he wasn't wrong!
Cue the massive torrent of folk telling me I'm wrong
Re: Keihin CR Special Smoothbores
Posted: Thu Nov 05, 2020 5:13 pm
Author: chrisNI
RALPHARAMA wrote:Cue the massive torrent of folk telling me I'm wrong
I have a set and they weren’t that hard to set up
Re: Keihin CR Special Smoothbores
Posted: Thu Nov 05, 2020 5:41 pm
Author: Robw
Got crs on two of my bikes, Lawson and endurance bike, never had any problems with them. Worked well from the box.
Rob
Re: Keihin CR Special Smoothbores
Posted: Thu Nov 05, 2020 7:39 pm
Author: rpeters
Is that 34 mikuni flatslides Ralph?... what was the engine spec?
Rob
Re: Keihin CR Special Smoothbores
Posted: Thu Nov 05, 2020 10:13 pm
Author: RALPHARAMA
rpeters wrote:Is that 34 mikuni flatslides Ralph?... what was the engine spec?
Rob
Hi Rob. I have fitted RS34s to quite a few bikes from a 1325 with really lumpy cams .... all ran really well from the box. The ELR (1000R2) we fitted the CRs to was stock save a straight through Harris pipe and stock airbox with K&N filter.
I have a set of RS34s on order for my 1075cc A4 with medium lift Kent cams. I just want an easy life. They're also appreciably cheaper than CRs
Re: Keihin CR Special Smoothbores
Posted: Fri Nov 06, 2020 9:29 am
Author: Ultim8pc
Someone I know in Germany has a brand new set he's selling for £800.
Re: Keihin CR Special Smoothbores
Posted: Sun Nov 08, 2020 8:19 am
Author: rpeters
Ok so the RS34s have a larger inlet diameter than the head port inlet so does this not disrupt the airflow, or is it best to fettle out the head ports to the same diameter as the RS34 carbs. Also larger diameter adaptor rubbers, are these easily available?
Re: Keihin CR Special Smoothbores
Posted: Mon Nov 09, 2020 1:38 pm
Author: RALPHARAMA
The RS34s use the same rubbers as the Js which are still available, both new and pattern. Buzzard tells be that it is best to open up the ports to the same diameter as the inside of the rubbers, which I will be doing on my A4.