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Jets / Carbs / Pipes / Dyno - Pt 453 in a series

1827 Views 11 Replies 7 Participants Last post by  crosstie
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Back when I did this to my bike, a few people were curious how much power difference it made from my previous set up. Short answer, not much :???:

I was running:
40 pilots
120 mains
Factory Pro needles (4th clip I think)
Airbox w/ 5x 1.5" holes

Dyno said 74.1 RWHP - a nice jump from stock

Now running:
same pilots & needles
130 mains
pod filters (no airbox)
custom 3-1 pipe

Dyno says: 74.87 RWHP - gaining a whopping .76 over the previous set up. Sigh.

However, I am no longer too rich at low throttle, and I have a significant lean spot between 4-5k rpm... which I *think* means the needles need to come up a notch - more gas earlier.

On the upside, the pod filters do just fine in pouring rain... as I found out on the ride home

I still have some s3 cams to drop in as well. I'll let you all know when the next dyno run comes around...

[ This message was edited by: crosstie on 2007-03-12 12:48 ]
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Don't you think you're overdoing the pilot size a little? :-D

My experence is the same...on my last dyno I got 78 hp rear wheel
and 80 NM of torque. I was still rich though so I can probably get slightly
better figures now that I've leaned her out :hihi:

Edit: In the words of my dyno guru "These CV vaccum carbs respond poorly to "unrestricted" airflow". Sure, you might get half an extra pony but the hassle of getting
it exactly right won't be worth it. He did however continue to say that "Give me 6000 bucks and I'll whip some 130 hp out this little baby."
Ofcourse my eyes and heart went "BLING" :idea: at this...but my wallet instantly jumped up and told me off.

[ This message was edited by: Spooner on 2007-02-09 01:35 ]
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