gusto

The wife and kids and I are looking to go down the west coast highway in October and I am strongly considering taking the Banshee. I have never been to any sand dunes and don’t know shit about sand tires or gearing. I would like to hit the usual spots in Oregon. I would love to find some used extremes but I mostly see sand stars and geckos (which I know are junk). what’s the optimum tire for a 421 serval and a 250lb rider? What kind of front tire ? Size and gearing?

Those are big main jets for your engine. Sure your not rich?

Curious about your cylinders at 68mm. Where did you buy them? im goi g to say 77 hp

VF4 or 2s would be my pick

411 kit? Where did you buy this? i would run 28 pwk

72mm for sure. Possibly can go bigger but I usually see billet cases on those big engines

New additions are top shelf!

That’s a fresh build. Let’s see some pics

100% do what is mentioned above.

Best bet it contact westcoast atv parts his name is builder on here. He carries good used parts. yes I think 340 is not a bad price. Have them throw in jets and a cable if you can.

Keihin PWK are the best carbs for a banshee. Crisper throttle response, changing jets are a breeze also. Sent from my iPhone using Tapatalk

28s

You took more off in this pic. I hope you throw it on a dyno to see what you ended up with.

I’m impressed with your tool selection. Did you buy that as a kit? i would recommend you make a template for your porting. Show your exhaust port. I’d like to see how much you’ve hogged out. You can safely remove more at your transfers and intake also, but I like that your playing it conservative. concentrate on your port angles at the transfers

Of those two Mattoon

Why are you changing pipes you just bought? Unless your strictly a trail rider or want big bottom end I just keep them.

re-measure your squish. Also, with the stealth head option from Driveline (sending in your core) its hard not to go that route and have custom domes cut or the ability to change out domes/squish/compression.

Nice job! What was the hardest part of the build? Did you buy an engine mount kit?

No. You port your cylinders. The intake, outtake, and transfer ports. cool head allows you to change your domes and compression.

The guys at Fast know their shit. Start rich and work down. They will ball park you. Lots of guys here run 35s and can give you an idea. If you bought the top end from Fast have them port out the castings. Excellent pipe choice, your going to fly

Buy wiseco pistons. bore your stock cylinders consider a port job mows the time and the difference is huge go through your bottom end and check seals etc done! If you have the money send the whole engine to a sponsor

You have the carbs already? I’d go PWK and a smaller size. Weld your stock crank. Good choice on pipes. Have FAST send you the jets you’ll need. They will know

Sold 7.5 years ago

JL Sells a plug in unit battery/rectifier that’s real slick. I have one. And it fits infringe of my Clarke tank. Also he can float your ground for 25 and if you need he sells a 200 watt stator. yes a 392 is stock stroke crank 68mm bore. CP serval or Driveline Assassins would be my choice.

Start it in the garage, adjust your air screws first out and see if it makes a difference. Then dial them in and see if that makes a difference when you take off