Dyno Disappointment.....

phil x · Post by **phil x** » Fri Oct 14, 2011 7:14 am

Ok, thanks for the info. I'll source some genuine Keihin mains 115/117.5.
At least a dyno run will give us hard evidence of the difference between RO & Keihin jets.

Quick Q - There are two lengths of Keihin jets listed on ebay 8 & 9mm, which are fitted to the NC as I don't want to be back to square one!

Cheers, Phil

Post by **Neosophist** » Fri Oct 14, 2011 12:05 pm

99101-393-1150
99101-393-1180

http://www.wemoto.com/parts/picture/HL-228615_5/

These are what you need.. 3gbp from wemoto they don't seem to list 118's though

http://www.ebay.co.uk/itm/Keihin-FCR-CV ... 3a653fb30c

118's

Just need to go by Honda part numbers above..

while the ebay ad lists diameter as 5mm and wemoto as 6mm i think there just measuring badly... 8mm is the correct height.

amorti · Post by **amorti** » Fri Oct 14, 2011 1:47 pm

Neosophist wrote:99101-393-1150
99101-393-1180

http://www.wemoto.com/parts/picture/HL-228615_5/

These are what you need.. 3gbp from wemoto they don't seem to list 118's though

http://www.ebay.co.uk/itm/Keihin-FCR-CV ... 3a653fb30c

118's

Just need to go by Honda part numbers above..

while the ebay ad lists diameter as 5mm and wemoto as 6mm i think there just measuring badly... 8mm is the correct height.

I still think it'd be a shame to move the goalposts when your jetting really isn't far off on what you have. Another 2 pair of jets from RickO gives you access to 3 combinations, 1 of which would have to be correct.

Post by **Neosophist** » Fri Oct 14, 2011 4:20 pm

Another good point.

For just over 10 quid could get a 118/115 kehin setup and compare it with Rick O jets?

phil x · Post by **phil x** » Fri Oct 14, 2011 5:20 pm

Thanks, all good feedback, the way I see it, I'm a bit lean on stock 110s & a bit rich on Rick O mains. I really fancy trying stock Keihins. At keast then we will KNOW if Ricks jets are richer & if so by how much.....

Phil

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amorti · Post by **amorti** » Fri Oct 14, 2011 11:16 pm

phil x wrote:Thanks, all good feedback, the way I see it, I'm a bit lean on stock 110s & a bit rich on Rick O mains. I really fancy trying stock Keihins. At keast then we will KNOW if Ricks jets are richer & if so by how much.....

Phil

Sent from my HTC Desire S using Tapatalk

It's some excellent community spirit, but still a more expensive way to solve your problem.

If it will pull right through without stuttering on RO's jets, it's only a little rich. If it won't pull through without stuttering on your other set, it's a lot lean.

I will let you to the decision, fingers crossed you get it right with the minimal amount of costly dyno time!

Post by **VFR400+** » Sun Oct 16, 2011 6:35 pm

On Ricks price list he has standard ones and dynojet ones listed.

Will be interested to see your results as im in much the same position at the moment

Post by **Drunkn Munky** » Sun Oct 16, 2011 6:56 pm

Have i missed the boat here or something? what are RO jets? as far as i know he sells keihin and DJ jets

Post by **VFR400+** » Sun Oct 16, 2011 7:22 pm

Drunkn Munky wrote:Have i missed the boat here or something? what are RO jets? as far as i know he sells keihin and DJ jets

Thats what I was thinking,

On a slight tangent, what the advantages/disadvantages of using equivalently matched DJ, or non at all?

Post by **Drunkn Munky** » Sun Oct 16, 2011 7:37 pm

The more common DJ jets (the ones RO sells) are meant to flow more fuel than a equivalent keihin jet, ie 122 DJ is the same as a 130 Keihin. In my experience this is true as i found out the hard way wondering why the various sets of carbs i rebuilt were way to rich as id used DJ mains

Dyno Disappointment.....

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