Wildcardracing

Measurements need to be from the top (deck). Also measure from the bottom (base) to the deck, stock is 4.035". A good set of reeds will yeild a noticable gain in throttle response and have the ability to flow more air to support more horse power. As far as the spacer, you should only run them if needed to clear bigger carbs over the clutch arm. Most of the billet intakes have the spacer built into their dimensions so you shouldn't need spacers to clear your carbs with them.

Your head is milled and the cylinders are ported...for what it's hard to say. Post up some measurements from the roof of the exhaust and transfer ports to the cylinder deck and I can give you some durations and an idea what they are ported for

Depending on transmission setup it can work, you'd need to keep 1st gear and set it up for a first gear launch. With the ratio's you'll be running for sand you'd be rapped out to the moon in sixth by the end of the 1/4. Most dedicated asphalt bike run overdriven drive gears so the setup is quite a bit different, but with the motor we've discussed and stock drive gears it can be a fun play bike at the strip with a few changes. So, yes...with some gearing changes you'd be ok. -Brandon

I'll make some calls to my distributors tomorrow and see if I can get you a price on some. Rocky Mountain can do special orders through their suppliers if you know who to ask, we are a dealer for them aswell. -Brandon

Nice work!

Tim's caclulations are based on a zero deck, not factoring in the .050 deck work on the base of the cylinder...I get 198 ED and 135 TD with that deck height (.070 base gasket or gasket/spacer combination). With just the use of a .020 base gasket you should see right around 193 ED and 128 TD. But it will require custom domes. -Brandon

I source billet crankshafts through crankworks, they build them from raw stock and available parts

Looks to be on a set of 4cylinder Mattoon cases with CP cylinders...not a production oem engine

Depending on the porting you will probably benefit from a +2 or +4 on a good 350...but, you can probably get away with your stock swingarm just fine. My advice is to take it out and ride it, see how hard it is to dune on the stocker and go from there. -Brandon

Rod length will affect the port open duration so yes it does matter.

I wouldn't go any larger on your setup.

I'm quite sure the engine described in this thread will make more "impressive" numbers on a crank dyno at 700' with 180psi compression as compared to his pump gas 5000' rear wheel pull. Apples to oranges.

You'll see approximately 2% loss per 1000 ft of elevation because of the loss of atmospheric pressure. At sea level atmospheric pressure is about 14.6psi here at 4500 ft. we have about 13.2psi atmosphere for about 9% power loss. Reno area where badasshee is at is somewhere between 4500 and 5000 feet so he's seeing between 9 and 10% loss as compared to sea level. Basically there's less oxygen available to burn the higher the elevation.

Whoever you decide to do the porting for you should be able to recommend a setup. I personally never use the spacer plates on the strokers. I prefer to port them for the stroke and use a billet head with stroker domes or rechambered stock head for the stroke. The base spacer plate will raise your ports more than a standard trail type port. Those PC pipes are a great trail pipe and would work ok with the 4mil. With the 4mil longrod you are going to want to run Wiseco 795 series pistons for anything between 64 and 66mm bore. Best advice is to make some calls and go with who you feel the best with. -Brandon

Fouledout421 had one for sale on here I think. If you can't find any used ones hit me up and I can get you a new one. -Brandon

I'll have to check my dealer pricing on them, but I have both the clear and the colored hoses available.

Hurry!! Only a few days left to lock in on these great deals. You can check out our other sales for non-banshees here: My link My link

Worn internal parts. Several things can cause engine noises, the most common being piston slap, worn clutch baskets and worn crank bearings. Some noises can be caused by modifications: open filters will be noisier than an airbox setup, straight cut gears are noisy ect. ect.

There is some power to be had by modifying the piston skirts, but I don't feel it's worth the reliability lost. I've seen dozens of broken pistons from enlarging the intake windows. I add a third window centered above the intake windows (boost port) on some of my builds to aid in crankcase filling, wristpin lubrication and crown cooling. It's placed higher in the meat of the piston so the piston looses less of its integrity than with window mods. What your uncle was likely refering to was trimming the skirts on the old piston port motors to change the intake timing rather than cutting the window/s of the jug. Your intake timing is controlled by your reed valves on a banshee engine. -Brandon

Who did your port work? They would be the best person to ask on the jetting for their work.

If you're basing your porting decision solely on price you're not doing yourself a favor. There are a lot of hacks around that will do them for next to nothing. Make sure whoever you choose to do your porting asks you some very basic questions such as your mods, weight, fuel, altitude and very importantly about your riding style. They should be able to help you with base tuning and give you suggestions on setup ect. I recommend shops that specialize in Banshees or at least two strokes for that matter. The site sponsors on here will do you a good job...F.A.S.T., Herr Jugs or myself. -Brandon

87sheerips is the guy who makes the grills, his name is JD...He'll hook you up with a nice one!

There are several camping areas, depends on what type of camping you want to do. Oasis is a little far from the mountain, but it offers the most improved camp grounds with trees,running water and outhouses. There are outhouses and such right at the mountain but no trees or RV dump. Mid April is spotty at best if you'll catch a nice weekend. I'd recommend late May or early June, then you are more likely to catch great weather without the summer heat.

You're going to need to step up to CPI or Shearer pipes and likely some more aggressive porting to get into that range. It will need timing advanced, good reeds and headwork or a good billet head to compliment the porting/pipes. Case porting is also a must to achieve the best possible performance. Carb size will depend on the use, fuel, porting and pipes. While the cases are split you are going to want to have the crank trued and welded to help keep it reliable. What fuel do you plan to run? What are the intended purposes of this bike? What is your weight? And lastly what is your budget for the build? These are questions you will need to answer to put a good motor package "built for you" together. -Brandon

I'm not sure how you all can say it doesn't have any porting done just by looking at a couple pics of the intakes. There obviously isn't any work done in the intakes but what about the exhuast and transfer ports?? Would need more pics/measurements to answer the question.