Banshee porting 101 simple start
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- เผยแพร่เมื่อ 2 ต.ค. 2024
- The simple first step to making power on the Yamaha Banshee. Surprise, its not the intake that makes the real power. If you are going to port one tunnel on the jug make it the exhaust. It yields the most power of any part of the cylinder.
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Love watching your videos, been following you on FB & IG for a while now and now on here. Would love to see more videos of bikes after you’ve worked your magic on them. Running, riding, racing... that type of thing. Keep it coming!
I personally tried this out and oh boy let me tell you, this did a major change on my 4mill stock cylinder stock bore no intake porting stock carbs , just with exhaust porting it woke up like it never did , I rode my buddy’s 4mill same setup and it was no where the same , this is really good when it comes to making power , and keep in mind this was my first time picking up a cylinder and triying to do some port work, my bike rides solid no issues at all and it’s true you don’t have to be specific with it.
Glad you tried it. I try and tell people what works but the internet is hard to battle with. Everybody is a keyboard expert.
@@herrjugsracing7816 where are you located
Excellent advice. I learned a lot ! Thanks !!!
Worked with Kev when he got started... Using flap wheels and such. Rode the first bike (his) and it was alarmingly fast!
I recently received my HJR 4 mill kit with the Mx hardcore port on my stock cylinders domes and all..very well packaged and everything looks amazing !!I can’t wait to build it and rip up the trails here in Michigan...gonna be a long winter lol
Thank you so much,máster!
Just to be sure I’m understanding you correctly, you are only doing the top of the port with out getting into the sleeve Right?
Don’t do any of the bottom of the port Right?
Correct, you are raising the roof but not dropping the floor. Watch the video closely. You can see how the work is done.
Just got my first banshee love it wish i would've found this video 2 months ago just put a whole new top end in. Now i can do it and see the difference. You ever run any banshees with the chariot 2-1 carb setup that's what this is paid 700$ for the quad just had broken reeds lol
I do not like the single carb setups. If you want that top end power you have to run 2 carbs.
Can this cause the main jets to go up a size or 2?
Yes
Why don't you champher the port after you finished machining it will give better ring life ???
Always, always, always all ports. That is a big rule in 2 stroke life. Why would you think not?
Same type of cylinder as a niche brand one? If yes, how reliable are they?
They do fine when the quality control is checked before using.
Thank you I’ll be trying this on a spare blaster cylinder and a Rt100 cylinder
Wow,, rt100 was my first bike,, 1992,,, I just went back in time
Hey I bought a athenas 370 cc kit and it says triple ported cylinders so I’m kind of confused can someone tell me why it says or what’s triple port???? Thanks
Fancy talk meaning that it has 3 exhaust exits.
In 1999 I had what was called a mild race port. Cost me $350.00.
Would want to see the power curve and torc difference form before and after the port widening/adjustments.
💯👍💯👍💯👍💯👍🤗
Great Video! If done on a stock Banshee with T5's what would you recommend on jetting?
It depends but 330 mains it what I use here in Glamis with 30 pilots, air screw 1 turn out.
I’ve been trying to get a hold of you on STB. Would love if you could answer a couple questions of me.
I'm sorry. Try kev@herrjugsracing.com
Will this work on Yamaha RDs too ?
Yes it will
This may seem like a fun question but do you have to at least hone the cylinder when your done or is it fine left alone?
You don't have to but its a good time to measure and bore if needed.
I have a question What do you do first the porting and then do the bore?
It just depends on the work flow. If you are porting yourself and someone else is doing the bore always port after the bore and finish chamfer.
Waooo, that easy nice
How do I get to see more of your port work
On IG and FB. If I wasn't so busy I would make more videos.
What do your 350's make for power with stock carbs and cpi's?
Race ported
70 hp pump gas.
Can I do this on my stock cylinders with out bore them
You sure can.
I’ve been watching for a while now did you ever beat you PB in the demon?
Not yet, I keep getting slower : (
@@herrjugsracing7816 One day you’ll have to port my Lt250r jug🤘
@@lbproductions8354 I'm ready, bring it!
Can you port and bore my stock banshee cylinders?
Yes, herrjugsracing.com
Wouldn't this lower the compression Having the exhaust port higher up in the cylinder?
The more you raise the less the swept compression is. This lowers it just slightly.
Thank you.
You're welcome!
what brand of cylinders is it? thx
Best teacher is it💪🏽💪🏽💯🫡
Great videos ,I really appreciate it
Thanks for watching!
Good and clear describtion
Thanks a lot
Awesome video Kevin can you make a crankshaft repair video?
I’ll do it, I have stocks jugs 👍
Thanks
No problem
Kevin whats a good exhaist timing degree when only trying to help your topend without changing the transffers ? 188-194 ?
I wouldn’t go over 198, 194-196 is plenty.
Always start low 188 to 190 will increase it a lot.
Great videos you make! alot of knowledge iv watched them all. I just built my first not stock motor. Picked the assassin 4 mil. Haven't ran it yet but wish I seen this before I put it together I need to port them.
Good job Keep posting video they are great.
Glad to help