Banshee 421 serval 95hp

Redline racing build
Dyno 95hp @ 63 lb torque
421 serval
24cc domes
+4 timing
Shearer's small bore
38mm pwk airstriker
Promod trans
20" tires
14-38 gearing

[@Yamahabanshee66]

Awesome build your the only guy on this app that actually showed the dyno sheet

[@jeromehoward2783]

Nice awesome dyno numbers

[@buckchurch1551]

I have two of these engines (1 by CAm) and have never seen 63 tq out of a 421 serval.

[@richyfishy5120]

@hot sloppy I’m pretty sure it’s because of the 2 into 1 with a 38mm carb

[@Lafortune89]

Hey guys, of course it's a different dyno , numbers can change from one dyno to another especially the torque numbers. And no this is not a 2 into 1 carb setup

[@coreychelko2872]

Is this ported? I have similar build just with 35mm pwks and vforce 4s. Never dynoed. I have 23cc domes too. I'm at 1300ft. What fuel are you using and elevation are you at?

[@Lafortune89]

Yes it is CNC machine Ported. I run 38's and VF3 with 24cc Domes @ sea level

[@jonathonbuchnoff8194]

Wow did Redline CNC port your heads, race mx port, dune port, on what fuel

[@jevtec2286]

@@Lafortune89 38mm mikunis or keihins? What type of fuel ?

[@Lafortune89]

@@jevtec2286 i run 38mm air Striker carb , this dyno run was not very accurate it's a Mustang Dyno so numbers aren't real , not any 421's put more than 51-52ft pounds kf torque and power band doesnt come in in the 4000's rpm. check my most recent Dyno runs , that a real ATV chassis Dyno's with Air fuel sensor , EGT readings

[@jevtec2286]

@@Lafortune89 i just build a 421 serval non ported. But im still debating wich carbs to use. I know everybody said keihin is the way to go. But what will be the difference in power if I mount 36mm or 38mm mikunis flat side ? Is there any specific difference in betwen toose two besides mukinis are sheaper ? Can you please guide me to the righ way to go before i spend my money. Thanks

[@xfdfff2620]

Race or pump gas?

[@oojeezy]

What’s your jetting?

[@Lafortune89]

Go check out my most recent Dyno videos with LED inframe pipes

[@oojeezy]

Ok got a similar set up can’t get the jetting rightj

[@Lafortune89]

List me your Setup. Motor, domes,fuel carbs and pipes.