sycoticbanshee00

I have a 421 cub with a similar setup, high compression, +7 on the plate. I run VP110 which is 107 motor octane with no issues, Sunoco standard 110 is 106 motor octane which will work as well. VP C12 is 108 motor octane and Sunoco supreme 110 is a true 112 motor octane. Any of those will work just fine. If you run an oxygenated fuel then you might need to jet fatter on the main, but that’s about it.

I got tired of dealing with the key switch, so I ended up bypassing it with the adapter from south Texas banshee, it plugs into your harness. I have an 01, but I believe he makes one for your year as well, one less thing to worry about.

Stock radiator on my 421 cub, +7 timing, high compression build, no issues with cooling at dumont dunes.

I like the 42mm UPP racing rollers, really well built, they also make a good chain slider and guide, I recommend them.

175-180 degrees, anything over 200 I would shut it down.

Can't go wrong with +4, I'm running +6 on mine, but on race fuel. Not sure on the jetting, but I heard to check your plugs to make sure it's not lean or anything.

I currently have 440 mains, 30 pilots, needle in the middle on my stock cylinder 4 mill, stock carbs, shearer sb, pod filters. 77rwhp, 40rwtq. Everyone says that I'm jetted beyond fat and should be in the 340 range more or less. The afr on the dyno showed that my engine wanted more fuel. Maybe they jetted it fat so that I could be on the safe side? Should I experiment with some 340, 350 mains? Also what would require an engine to have such a fat main jet? It just doesn't make sense that similar setups out there are in the 340 range for the most part.

Originally all I wanted was your stock stroke dune ported setup, shaved head, advanced timing. Your typical 65hp setup on stock carbs. I dropped off my bike at his garage, he said alright I'll have it done soon. I told him to check if I need a new top end and all of that, he calls me a couple of days later and says yeah you don't need a new top end, you're good. I was like ok. So the day comes up that I pick it up, he said I ported your cylinders, milled your head, advanced your timing to +4, I jetted your carbs with a 330 main, I didn't have the pilot jets so I drilled them out to a 28, and the needle is in the middle clip. To make a long ass story short, the cylinders wouldn't fire evenly and the thing had practically no low end power, my top end ended up being shot, also my timing was only at +2 not +4, the head wasn't even cut and rechambered correctly, wrong jetting. Just a lot of mistakes by this guy, also he wasn't willing to stand by his work, so I was like screw him I'm going somewhere else.

I agree with what you have to say about Kevin. I called a few other builders and they all gave me a similar answer to what my problem was. At the end of the day, they were right. Kevin simply said "check timing" "change your premix ratio" "change your spark plugs" "keep playing with the jetting" "make sure your fuel is fresh", etc. circles, circles, circles. Not cool at all.

Pretty much what this guy said. The guy works too fast, and doesn't take the time to do it right. Cuts corners, not the way to build engines if you ask me. Drilling jets, not rebuilding the top end when it clearly needs one, he just puts everything together and sends it out hoping you won't catch the problem. Once I dropped off my bike to allen, the next day he told me what was wrong with it and what needed to be done to make it right. I went with the 4 mill stroker and the thing is running stronger than ever. Hjr is a hit or miss, I'm definitely not taking the risk. I'm glad some of you have had luck with him, It's your hard earned money.

I did read on the shoutbox that someone had problems with his transmissions, but that might have been a joke considering the place where it was said.

Damn dude it all makes sense now. I had a horrible experience with him also. He knew that he messed my shit up, but wouldn't stand behind his work. Ended up going with allen knowles at ct racing. My stock cylinder 4 mill made 77rwhp 40tq on stock carbs. I'm happy with it, plus he's less than 10 miles from my house. He even dyno tuned it and everything for free once it was broken in. If I were to do it all over again though, it would be redline. If I ever upgrade to a cub or serval, it will be Cameron at redline racing that will do it. Hjr was a definite miss for me. I don't recommend him.

i heard it was because the newer banshees came with 20 inch tires vs the older ones came with 22s? Either way everyone on here gears according to power, weight, etc.

I checked my plugs and they were a brown, caramel color all around the white area, not black or anything like that. CT built my motor and set it up. I'll have to double check on the mains because he might have told me they start with a 400 main and then lean them down accordingly. I know a lot of you are going to pick on me now because I mentioned "CT". Lol

Damn I was there on Saturday. I was finishing up my break in for the greater part of the day, you probably saw a black and white banshee in the evening make a few runs when things started dying down. My fatass kept bogging off the line. Lol

On my engine it was low compression and totally off jetting. Got that fixed and it runs way better now. Now my fatass keeps bogging off the line, but that's another chapter.

Regardless his baseline jetting was all wrong to the fullest. Bike was running worse than before, way worse! Also he didn't even remember how much he milled on my head, he simply said what he generally does to banshee heads. "I mill this much when I port them and this much when I don't." Most builders that I heard put jets in there and don't start drilling shit just because they're too lazy to order them. He also charged me for a jet kit, which he obviously didn't even use. He was like "those numbers on the jets aren't the ones you have, I drilled them out to match what should've went in there." Who knows what the heck he did. He also put on the paper that he cleaned the carbs, yeah right! Those things were all dirty.

You see here's more proof that he fails. What builder drills out stock jets just because he doesn't have them in his garage? Kevin! Obviously you're a hjr fan and want to defend him to the fullest, I'm simply sharing my story. Yeah your hjr motor is probably faster than mine, like I care since being the fastest is one of my least concerns, especially since I weigh over 280lbs which puts me at a big disadvantage anyways against all of you lighter dudes. I'm simply looking for something that's fun and reliable, Kevin couldn't even do that.

I was upset because I paid for something that ran like shit and he wasn't very helpful in determining my issue. Once I called another builder and told him my issues, he had a really good idea what was the problem and sure enough he was right. Why couldn't Kevin do that instead of saying adjust airscrews, check timing, lean out your mix to 40:1, change spark plugs, adjust your jetting. Circles circles circles. I have also heard that his dome setups and stroker setups have failed many people big time.

Dual pods with outerwears! I ditched my air box and couldn't be happier. Everything is so easy to clean now in the carburetor area, not to mention jetting is way easier to do since the carbs are like there ready to go. You ride sand anyways so that's a plus.

I dropped off my bike to him and asked him to do a dune port setup, shaved head, advanced timing, etc. one week later it was done, so we test it out and the thing had very weak power and pathetic low end. Couldn't even launch in first, etc. he simply drilled the jets and didn't even put the right ones in there, the head was only decked not rechambered, etc, timing was only set at +2 instead of the +4 he told me. Very very weak setup and a waste of money unfortunately. He also wasn't very helpful in determining my problem, he simply drove me in circles, told me to bring it back, but he was going to charge me, I was like nah I'll pass buddy. Ended up being my top end was shot jetting was way off. Long story short his work sucked, my new builder set me up with a stock cylinder 4 mill that runs way better beyond night and day difference. I simply need to set it up perfectly to get it to it's maximum potential. Right now though I'm happy. I believe hjr needs to do more testing and riding on his engines so that he can see what works and what doesn't, all he has is his garage and that isn't enough. All true builders have a dyno, machine shop, etc. I guess you don't need all those things, but you have to know what works and what doesn't. He simply builds stuff and sends them out hoping they're all perfectly setup. Things simply don't work that way in my opinion.

Well I've had Kevin set me up before and he failed big time, bike ran like total shit. My new builder fixed me right up and bike runs strong now. All I need to do is work on my setup for launching and I'll be good.

True that on the psi, I had them at like 4-5 psi. My tires say 5 psi operating pressure, 15 psi max to seat the bead. With my fatass on it I'm going to need all the traction loss I can get. Lol

I have those also. Have you ever had any problems?

Yeah I'll see when I can go out riding again and See how everything works out. Thanks for the help guys, I appreciate it.