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Mikuni HSR42 TC95" Jetting

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Old 02-21-2016, 12:35 PM
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Default Mikuni HSR42 TC95" Jetting

Looking for some baseline jetting suggestions for my Dyna. I just pulled the stock CV40 off and replaced it with a Mikuni HSR42 carb.

Here's my engine specs:

95" big bore with Wiesco flat top pistons, measures around 10.2:1
Underground Performance 78cc heads, shaved, step milled, high velocity ports
1.9" intake valves, high lift springs
SE adjustable rods
Feuling lifters
S&S 585G easy start cams
S&S stealth intake
Bassani short road rage 2-1 exhaust
Crane Fireball Hi-4tc ignition

Elevation is around 2000' , plans are to eventually get it dyno tuned but I'd like to have some baseline jetting in place so I can at least ride it.

Right now the carb is all stock, 160 main, 25 pilot, 70 acc pump jet.

What do you recommend for a baseline?

Thanks!
 
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Old 02-24-2016, 05:59 AM
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That should certainly allow you to ride it, as that jetting combo covers a broad spectrum.
You may see a 165 main after all is said and done.
Scott
 
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