421 4mil serval banshee 90hp

Walk around of my 421 4mm serval on pump gas and the mods done to the quad. Dyno sheet in video. I did forget to mention the stainless brake lines and a DRW case saver
#yamaha #yamahar1 #yzf # yzfr1 #r1 #r1m #4xv #5jj #5pw #5vy #4c8 #r6 #r3 #bmw #bmwmotorrad #s1000rr #s1000r #m1000rr #hp4 #k46 #k67 #hp4race #honda #hondacbr #cbr600rr #cbr1000rr #cbr1000rrr #cbr1000rrsp #f1 #f2 #f3 #f4i #Suzuki #Suzukigsxr #gsxr #gsxr600 #gsxr750 #gsxr1000 #Kawasaki #zx6r #zx10r #zx10rr #rr #ninja #banshee #yamahabanshee #banshee350 #421 #serval #421serval #cub #421cub #superserval #supercub #dm #pwk #shearer #cpi #led #fmf #procircuit #elka #fox #cpindustries #offroad #sanddunes
#lsok #yzf450 #trx #trx250r #atv #atc250r #motomillion #akra #akrapovic #arrow #twobrothers #gytr #scproject #amsoil #ohlins

[@sniglib1]

Damn that banshee sounds right👌 great job on that engine build and the bike overall i like how its not overdone and using the O.G parts i always try to do the same

[@ctadrenaline]

Thanks! She’s a ripper for sure! Not sure if your gonna like the bigger bikes lol I went all out on them. You’ll see them in a video coming up soon. Thanks for viewing and please subscribe!

[@cxbra]

Thats my dream build, stock frame.. 4 mil stroker with all that torque! 90hp is insane on pump gas what a beast!

[@ctadrenaline]

Honestly your best bang for your buck with that set up. Or if you need a few more hp/trq go 10mm crank. You can still run stock carbs and current pipe on both the 10mm and 4mm

[@baycitybanshee5238]

I used to have that same seat with graphics in black/white. I know you said it’s just a beater but you can take the seat to an upholstery shop and get just the middle section replaced for cheap.

[@ctadrenaline]

I may just do that!

[@joeyholthusen6495]

I love the idea of staying on pump gas. I'd like to do a banshee build soon. I do have a Yamaha raptor, I have a full Hinson clutch basket, plates, springs, ect... Plus 5mm stroker crank, 3mm intake valve and plus 2mm, stage 3 cam, 105.5mm piston and cylinder with EFI controller freed up the exhaust system and air intake. Changed gearing up for top end. At 75mph in 4th gear I can pull it up, then shift in 5th and it's stupid. You think it's going to stop pulling, but nope it don't. It still bounces off the rev limiter in 5th. 23" up front and 22" tall out back. Compression I kept at 11:1 to be able to be at 91 octane minimum. Aviation gas is affordable and 100 octane. I ride a lot of trail riding and woods. Not into nerf bars always got them snagged up on tree's ect.... quad looks very nice!

[@ctadrenaline]

Thanks for viewing and if you havnt already subscribe and share with friends!

[@sethanderson9931]

How much hp do you think it’s putting out?

[@ctadrenaline]

@@sethanderson9931 are you talking about the raptor you have? I’ve seen a turbo raptor 700 make around 80-100hp with full boost. Not sure what other mods the guy had though

[@sethanderson9931]

@@ctadrenaline I was talking about the raptor. But how close do you think his raptor build would compare to your banshee?

[@joeyholthusen6495]

@@sethanderson9931 I'm not sure of the hp number? But the torque is stupid on my built 770cc Yamaha raptor. Dramatically more than stock, plus 3mm intake valve and plus 2mm exhaust valves. Paired with higher compression piston, and 105.5mm piston. Minimum of 80hp plus.... But it's the torque is where it truly shines! It pulls extremely hard from down low idle, then shifting threw the gears, you think it's going to stop pulling? Nope it don't! Soon your bouncing off the rev limiter in the lower tripple digits.

[@Z24300hp]

Wicked nice bike!

[@ctadrenaline]

Thanks! Please subscribe and tell your friends to do that same!

[@SVTBansheeman]

Redline ported pump gas serval, elkas, white fullbores, did we just become bff's🤷‍♂️

[@ctadrenaline]

Anyone who’s good people that ride are friends in my book 👍🏻 I’m gonna have videos of my 10mm Dm and 20dm at some point soon. Subscribe, hit notifications I would appreciate it!

[@SVTBansheeman]

@@ctadrenaline I'm glad you posted a graph. I sometimes wish my powerband came on earlier but I love how far the shearers rev. I think I'll go with cpi instead of snipers since the snipers come on nearly as late as my shearers do.

[@ctadrenaline]

I feel like the snipers do hit a little bit earlier then the shearers do. I had them on a 4mm ported stock cylinder. You can see in the graph where he was on the throttle for a half second let off then went on the throttle again

[@SVTBansheeman]

@@ctadrenaline at 8200ish rpms?

[@ctadrenaline]

No look at 5-6 rpm

[@BansheeBoyz100]

I bought and built my 421 4mil serval myself and my brother, I regret not sending my cylinders off to redline for cylinder port dune, I did port match my case top for cylinder

[@ctadrenaline]

Cast isn’t bad. But of course a proper dune port would be a really nice touch. You can always send the cylinder out. However there is a possibility that you may need to replate it. Definitely contact Cam see what he can do for you. Happy thanksgiving! 🦃

[@danieltinsley8462]

Love the video

[@ctadrenaline]

Thanks for watching much appreciated! Gonna do some videos on the other banshees I have as well. The bigger motors

[@Floridawoodsbanshee]

Nice video. Took the time to discuss all of the upgrades. What sprockets are you running with this setup? And I'm going with round housing setup next. Going with stock swing arm length as well. 4mill stock cylinders. Long travel elka front and back Bikes are very similar. Nice banchee!

[@ctadrenaline]

Thanks for viewing! I’m running stock gearing and make sure your cylinders get ported. It will be a nice engine. I had a 4mm ported stock cylinder before I got the 10mil made

[@danielzettina9300]

Great video man! Ok so having 90hp.. is that considered stock length swing arm? How does it do in the trails with all that power? I’m thinking of upgrading to a +2 ? Would you say stock length works just as fine?

[@ctadrenaline]

Thanks! For dirt trails yes run a stock length arm with that motor. It’s great and a ton of fun! Some even run a -1 but that’s more mx oriented. I wouldn’t do a +2 to be honest but I would suggest a roundhouse style stock length swingarm

[@claudeperron780]

Nie Shee, Cam did my 521 too!!

[@ctadrenaline]

Thanks! And yea I know lol. I’ll be doing a video on my 611 and my 706 as well 👍🏻

[@karenypedroalmaraz8182]

Nice 90

[@ctadrenaline]

Yea it’s a turd 😂

[@skydog71]

Just curious what type of porting you got done on the motor? Play port, dune, drag??

[@ctadrenaline]

I would say it’s maybe close to a dune port. I had redline racing build the whole motor for me. He said he would port it to not loose any bottom end by reshaping or whatever he said can’t remember exactly but it’s a great motor as you can see in the graph. If you havnt already please subscribe! I’d appreciate it!

[@BostonBanshee]

🔥🔥🤟🏼🤟🏼

[@mike0chek]

sweet bike man! where did you buy the chrome gas tank cover that is around the gas cap??

[@ctadrenaline]

Thanks! And I got the cover from redlineracing.biz I’m not sure if they have any more left but you can always email to find out

[@mike0chek]

@@ctadrenaline nah they dont even list them anymore, thanks tho. i got them building me a 465 right now cant wait!

[@ctadrenaline]

@@mike0chek very nice your gonna love the motor! Cub or serval?

[@mike0chek]

@@ctadrenaline yep ive read so many good things about cams motors i had to have one. 465 cub, dune port 39mm carbs on race gas :)

[@ctadrenaline]

@@mike0chek oh yea he’s definitely one of if not the best banshee builder. Your gonna love that motor it’s gonna rip

[@damianc7569]

I tried to get one of those chrome Gastank covers but no can't find em where they aren't sold out

[@ctadrenaline]

Maybe try making a “in search of” post on Facebook in the bansheehq group. Someone might have one

[@AndresPerez-gf9ur]

What type of problems did u had or are they really reliable? I'm trying to buy a build 4mil

[@ctadrenaline]

They are very reliable. Just make sure to do a leak down test to make sure it has no air leaks and jet a tiny bit fat it should last for a long time. Only issue you may have is if your really just spinning the tires and not getting air though the radiator it can get hot and you may have to let it cool down. But as long as you keep moving it should be fine. I do suggest on any build a over sized ebay radiator, engine ice coolant and oversized impeller. Also runs a temp gauge

[@Lafortune89]

that dyno sheet is from 2016. are you still running the same motor in that bike ?

[@ctadrenaline]

Correct still running strong as the day I got it. A motor with no leaks that’s jetted a tiny bit fat goes a long way

[@sethanderson9931]

@@ctadrenaline did you ever have to put a new top end on it?

[@ctadrenaline]

@@sethanderson9931 nope she’s running strong as the day I got it. When a motor has no air leaks and is jetted properly ( a prefer a little rich) they will last a long time with good parts when it’s built 👍🏻

[@sethanderson9931]

@@ctadrenaline that’s awesome!

[@rideordie2736]

@@ctadrenaline what's your jetting

[@adamg9518]

WHY have the airbox with a ported machine???? Leaving hp on the table

[@ctadrenaline]

Yes you can have some some gains with running pods and then dialing in the air fuel ratio with jetting. The air box has a purpose with this bike though. It’s a trail beater that will see some mud, water ect. If riding conditions wasn’t a issue like mentioned above then I could just ride my 10mil bike. Point of this machine is to be wallet friendly using pump gas and having a air box for those types of conditions. Thanks for viewing! If you havnt already please subscribe! I’d appreciate it

[@ctadrenaline]

Also to comment on the porting. It’s definitely recommended to get more power and more usable power as well. It’s a win win even on stock cylinders with stock carbs

[@averycossio1169]

Do u have a 4mm or 10mm stroke

[@ctadrenaline]

The one with the white plastics is a 4mm

[@karenypedroalmaraz8182]

I have a 7 mil 443 non port it 90.30 hp and 52.11 torq

[@ctadrenaline]

Nice that should be a fun motor 👍🏻 what cylinder?

[@MrDfrancis11]

How much was the engine build from redline?

[@ctadrenaline]

Prices have gone up since I had this motor built. Your best bet would be to call him and get a quote. Depending on exactly what parts you use will help save money or be more expensive

[@averycossio1169]

Wat size pistons are u running

[@ctadrenaline]

68

[@Envashion]

what does the 4mm refer to?

[@ctadrenaline]

It’s a +4mm stroke ( stroker crank meaning it’s bigger then stock)

[@Envashion]

@@ctadrenaline thx

[@Noslo_559]

What jetting are you running on this build?

[@ctadrenaline]

152 main, 55 pilot 1 turn out on air screw, CEL needle mid clip. Carbs are 35mm pwk’s. Jetting will differ a lot on setup, port timing, shape and mods

[@Noslo_559]

@@ctadrenaline Yes understood. It’s a pretty nice setup. Always curious about the specifics so thank for being so detailed.

[@ctadrenaline]

@@Noslo_559 absolutely thanks for viewing! Make sure to subscribe if you can for more cool videos coming soon!

[@Noslo_559]

@@ctadrenaline Just subscribed. I normally do mild stock banshee builds and own several but am looking at building a street drag style 421. Something with street tires, a mild upgrade to the swing arm and a 421 engine so just doing some research and asking questions on others who have built one and their preferences/experiences. Thx.

[@ctadrenaline]

@@Noslo_559 nice. If you have any questions feel free to ask. If your gonna do just street drags on one of them would do at least a 10mil cub or serval and run it on alcohol. With the 3 banshees I currently have and the ones I’ve had over the years you gotta figure out what you wanna do with the bike. You can’t have a one motor/ chassis setup for everything. You gotta build it for a intended purpose like drags, dunes , trail ect

[@andrewmaclean6144]

Sounds like my ex Latina wife

[@ctadrenaline]

😂😂 thank you for viewing!

[@SukiInDubai]

What is engine ice 🧊?

[@ctadrenaline]

Type of coolant

[@SukiInDubai]

@@ctadrenaline how much would a 2009 Banshee almost new In stock form be worth

[@ctadrenaline]

Depends on the market where you are and condition. I’ve seen 2006 models ( last year in the USA) go around $6000 usd. Market is high though right now

[@xfdfff2620]

Which ones are more reliable servals or super servals

[@ctadrenaline]

Both are reliable as long as your motor has no air leaks ( need to - leak down test) , has good quality parts and is jetted correctly a little bit on the rich side 👍🏻 on a 421 and up I would suggest a temp gauge or some sort

[@xfdfff2620]

@@ctadrenaline is the meintance same in both and is there difference in how much gas they use?

[@ctadrenaline]

@@xfdfff2620 they won’t require much maintenance if done right. Just normal stuff like clean carbs when needed, use a good synthetic premix, make sure filters are clean ect. The bigger the motor and the bigger the carbs the more fuel it’s going to consume. Remember it’s about smiles per gallon, not miles per gallon with these motors. If fuel economy is a concern there is things you can do like use a bigger fuel tank, use smaller carbs depending on motor size, and bring fuel with you. More power is going to use more fuel can’t do much about that

[@xfdfff2620]

@@ctadrenaline alright thank you

[@xfdfff2620]

@@ctadrenaline btw how reliable they are in general? Like do you really have to change nothing in a year if its well used or?

[@yojoe2715]

😂 75hp. Not 90hp.

[@ctadrenaline]

Maybe your 4mm stock cylinder 😂 but if you look at the Dyno charts it’s right at 89hp close enough to 90. With some more porting, race gas, little more timing and pods easy 95-100hp