Keihin CR29mm

[Harveyedward]

Hi

Just fit a set of Keihin CR29mm on my 900, straight out of the box, 120 mains, 17.5 pilot, 240 main air jet. Harris pipe starts fine but doesnt want to rev any advice for a good starting point for set up?

Thanks Neil

[martinz1000r]

Are 29 big enough for a 900? I tried to run mine on them and it would not rev out. Chris at Grumpy advised 33 or 35. I went for CR33 but can't advise jets I'm afraid as it was all set up on dyno at GP Performance

[Pigford]

Surely 29's would be fine as 26's work okay for a Z1000?

[Jay1969]

I bought CR29's for my 900 as Dave Marsden says anything bigger on a standard 900 head is over-fuelling. Mine haven't been set up properly yet either so can't advise at the moment.

[slappa13]

Hi Harvey, I use cr29 with 55 pilot jets and 125 mains and they run lovely

[slappa13]

Best setup for 900

[chrisNI]

29s shoud be perfect for a 900 - they're hardly going to strangle it as they'll be flowing more than the standard carbs . You'd also be better with a bigger tap for that reason. One thing about the CRs I was advised that you can't really set them up on vacuum gauges (and which from my futile efforts before I was told this appeared to be correct) you need to synchronise them up on the bench using the feeler guage/bit of wire method.

[chrisNI]

I faffed about with mine for a good while but made most progress with a trip to a Dyno. Hadn't really got it 100% on the short visit and intended to go back for finer tuning, but the local guy went out of business so have never got round to looking for another one. It was doing 100 brake at the back wheel on 1075 with CR31s so it's not a disaster, but the dyno is a great tool for seeing where it's fuelling - it seems to change throughout the rev range which means you know exactly what to change.

[Fred the Zed]

Anyone got the sizes and settings on CR 29mms for a 1015cc... standard bore and head, just a V&H pipe fitted?

Just for future reference

Fred

[Harveyedward]

Hi
Thanks for the info had a look today the needles were set at 2 instead of 4, the pilots are 65 instead of 60 so will change these and put back on and she how she runs.

Thanks Neil.