Buying The Cheapest Honda 400ex To BIG BORE

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I buy a very cheap Honda 400ex quad with plans to install a big bore kit on it. #Honda, #BigBore, #Quad
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The following video features activities performed in controlled environments by knowledgeable persons. DO NOT attempt to duplicate, re-create, or perform the same or similar activities at home, as personal injury or property damage may result. 2vintage( Joe Weber, the persons shown in this video and ANY CONTRIBUTOR, ARE NOT LIABLE FOR ANY such injury or damage. ALL 2vintage( Joe Weber) CONTENT IS FOR ENTERTAINMENT PURPOSES ONLY.
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Опубликовано:

25 июл 2024

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Комментарии : 144

@2vintage 2 года назад

Any recommendations for cams, big bore kits, and silencers? Please SUBSCRIBE and LIKE if you enjoyed the video! It really helps me out a lot! Instagram: 2_vintage_ Thank you for all the support!

@MrAlex3250 2 года назад

do big bore 426, stage 2 hot cam, some head porting, UNI air filter with no lids, a exhaust pipe and re-jet the carb. Would be nice to see that !

@mikeschlup5279 2 года назад

I have heard from 2 or 3 guys hot cams can be junk...these do not take a radical big bore kit...without a new crank etc...a little more power will not be a problem.i ran into a guy who had a 440 kit and his bottom end shortly after rebuild.

@robertackerman5314 2 года назад

My 2000 400ex had a HRC 440 big bore kit with cam and a Curtis sparks pipe and silencer it was an absolute beast I regret selling it !!!!

@Dada8050 2 года назад

I've got a 440 big bore, stage 2 hotcam, ARP style HD head studs, port and polished cylinder, DG silencer, flathead FCR carb and a K&N filter on my bike and its retardedly fast for what it is.

@klxzay1115 2 года назад

Hey man I really like your vids but what happend to the wooden dirt bike build? I really want to see it built.

@N3LP 2 года назад

2vintage uploaded todays going to be a great day

@j-beatsimaginationstudio1987 2 года назад

lol basically no compression, wind hits a wall at 20 psi prob lol but you will have this 400 purring like a kitten soon enough my friend. Be safe :)

@Jerry-dk8se 2 года назад

The garage updates are looking great, Joe! 👍 You might need a parts washer. Then all of the work you put into these machines will reflect the work. That 400 is going to be a BEAST when you're finished.

@2vintage 2 года назад

Thank you! Yep looking to buy one soon

@2acres933 2 года назад

I had one of those back in the day. For an air cooled quad they are surprisingly fast! Classic quad!

@mikeschlup5279 2 года назад

They handle nicely too.

@jacob8770 2 года назад

I had mine up to 60 mph before, and it stayed straight

@paull.9563 2 года назад

It’s probably just low on blinker fluid if not then it would definitely be The cotter pin on the knuckle buster probably loose or missing. Just slap it rub it down and twist the throttle that would be my advice

@lifeononeweel3008 2 года назад

I got my braincells back and then lost them again with this comment

@Trxwhippa 2 года назад

i had a 2004 bug eye edition 400 ex, 440 big bore, stage 3 hot cams, bigger jets, and had a high compression piston in it, thing was a beast for sure!

@powerbomb400 2 года назад

I have a 2005 Honda 400 ex that I put in the 88mm piston and a Hot Cams Stage 2 hotcam. Still retains the low end grunt but the cam helps alot with mid to upper power range. As you bulletproof motors. As for the 450r they have a much higher compression which is what it was made for the track.

@austinsoderberg8216 2 года назад

I swear so many ATV RU-vidrs are doing 400ex builds!! Wish I had that when I had my 400X!

@ShiningRevolver 2 года назад

Completly oem, I love it. And mine is identical, already did a 440 stage 3 cam flat slide carb port polish lightened flywheel, can’t wait to see what you do

@TwistedTriggerEnduro 2 года назад

Another amazing video!! Your a mechanical wizard and editing expert. Thanks for posting!! 🔥💪

@reesegaster1611 2 года назад

Very excited for this one just got my motor parts in and frame back from powder coat for my titled 01 400ex build

@CaydenBurgei 2 года назад

Love these 400ex builds keep up the good work.

@erichemmelgarn4623 2 года назад

Just keep it stock bore or a 416, you’ll ruin your crank doing a 440

@peteraitken6494 2 года назад

Great job so far joe doesn't look too bad good luck with it 🔧🔧🔧👍👍

@justinm6110 2 года назад

I just bought a yellow 05 , the guy i bought it from knew nothing about it ,tore it apart and it was a 440 big bore with 11.1 wiseco piston with stage 2 Hotcam, i put a new cylinder and rings and cam chain and bigger header pipe with a HMF muffler and its just as fast as my 450, they get fast bro, i also have a bone stock super clean 06 so i can get a feel on how much faster they get when you start modding them, it sounds awsome.

@nalyd6386 2 года назад

Love the videos man, favorite RU-vid by far, keep it up. Not sure why but I’m absolutely addicted to your videos, watch these things when I’m pooping and everything 😆.

@Sum-wk5li 2 года назад

I have 99 400ex. Just this past summer I bought a brand new 426 big bore kit and crank. Had a 426 kit when I bought it. It has a web stage 2 cam and a wiseco crank and a keihin 39mm carb. It's pretty fast and lots of fun. The top end speed is where the big bore shines. i noticed when searching for a 426 kit were hard to find. I wouldn't go 440.

@rotex380 2 года назад

Love the video's man🤘👍 thanks for sharing with us..

@Aklegend25 2 года назад

Man I’ve always wanted a 400 ex to build but even the ones in my area that are blown up or need serious work you are paying at least 1500 bucks for it

@2vintage 2 года назад

Man that sucks. Hopefully you find one soon!

@fullmetaljacket7 2 года назад

27:48 You can dissolve and remove the aluminum on the cylinder wall using muriatic acid. If the coating isn't chipped, you can sometimes get away with it.

@vwsandvettes3253 2 года назад

I made my own piston pin puller with a threaded rod, 2 washers and 2 nuts. It works great and doesn't stress the big end bearing or crank.

@Gladiatorguy1998 2 года назад

I had an 04 with a 416 kit, high compression piston and silencer and it clocked 82 on the gps.

@deltafreshrelics1660 2 года назад

The 426 kit with a stage 2 hot cam and pro circuit pipe was a blast of a machine.

@jacob8770 2 года назад

I got my 2003 400ex for $400, it was missing a carb and a air box. Now I have it running and it’s amazing, I need a stock muffler for it though because it’s too loud with the aftermarket one.

@jeffreyalejandre9306 2 года назад

$800? Dang that’s more what I paid for mine! I paid $650 for my 2000 red 400ex that is pretty much stock with new tires and fmf exhaust and power bomb headers! It runs & drives great and all it needed complete rear end replaced except the Axel since I was able to salvage it! I must of got a smoking deal! I just got in to riding these quads man and I Love watching your videos! Keep it up!

@jacob8770 2 года назад

I paid 400 for mine, it’s a 2003 and was missing a carb and air box

@Hanky_Bannist8r 2 года назад

I got to ride my brother's 400ex with a 440 kit and it was spicy ! Definitely heaps of a different machine than his stock one. You can't overbore the stock cylinder too much without overheating issues and or not running right on pump gas if you get over 10:1 compression. If anything, go 20 thousandths over on the stock cylinder with a forged Piston and bigger cam the big bore kits aren't cheap.

@Davido50 2 года назад

Truth! Good advice for Joe. I would rebuild to stock form myself. Athena top end kit..new maier plastics an sweet gripper seat cover. Be worth 2800.

@chase8545 2 года назад

Bro do a 426 13:1 they haul ass and pair it with just a regular hotcam stage 2 and I know what everyone says about head studs but you really don’t need them.🤙👍 and a 4” spal cooling fan goes a long long way. You get more power from compression than from cc’s

@c0munguyforcaz 2 года назад

now thats a clapped out bike! great video!

@rhiantaylor3446 2 года назад

The valves did look OK but to be sure I would have applied pressurised air to the spark plug hole to see where it comes out - or - after taking head off, replace plug, set it on bench on its back and fill combustion chamber with kerosene or gas to see if and where it leaks out - ilet port or exhaust. That rod looked like it had gotten very hot.

@NorthFloridaOutdoorsman 2 года назад

Got that heater ready , shop is looking good

@2vintage 2 года назад

Thanks!

@fuzexninja1292 2 года назад

Please do the build I rebuilt one from the ground up and still have yet to ride it and it’s been like 3 months it’s been sitting

@BWADaniel 2 года назад

I did a 10:1 Wiseco piston on the stock 397cm bore, stage 2 hot cams & new valves and springs along with 2 four inch spal fans on the oil cooler. My baby is scary fast lol. You don’t need a big bore kit. It becomes unreliable at that point.

@THEDUKELOVER 2 года назад

Ive been wanting to try rebuild a 4 stroke

@destruct61 2 года назад

I big bored my Suzuki Eiger 400 and it was a pretty nice improvement I went .40 over.. for cams I'd recommend either hotcams or web cams and go with an hmf silencer for it

@Yamahabanshee66 2 года назад

Yoshi pipe and silencer

@myguitaryourface5160 2 года назад

If it sucks up water wile running it will do that I have a 400ex also and have had it happen to me from having no air box lid

@larrywarner9314 2 года назад

Use muratic acid and que tips and that aluminum transfer with wipe of then either bore it or hone it and new piston

@dropkickking4289 2 года назад

Sweet I got a 05 raptor 660r for 500$ from under a tree and started after some attempts

@JustSomeGuy38790 2 года назад

Yep 3500$ is about the norm don’t go crazy on the bore people say 440 overheats I got a 416 kit with a stage 3 cam and it rips! It has been running good since February 2020. I bought my kit from BP Racing on eBay. I haven’t gone to 426 but haven’t heard anything bad about them

@chuckaiosa1193 2 года назад

Garage looks great! Can you do a video on Chinese carbs for ATV’s these carbs are killing me!

@acerig4675 2 года назад

That intake boot look real sketchy, I would definitely inspect that for a lean condition

@roryk.3568 2 года назад

Looks like you bought one from the same people as I did, don't like to run air filter. Looks like dirt on the piston. Mine was full of dirt and the cylinder was as smooth as a babies but. Had to do a complete rebuild.

@rico6249 2 года назад

Put a big bore 440cc kit on it with a stage 3 cam, it was like 600$ on ebay and a slip on yoshimura silencer is 400$ for it, i think i would be a great combo

@superslow7609 2 года назад

I love 400ex man i wish i would’ve came across that but badass quads

@BillWilliamson420 2 года назад

aye man i love the 400 ex videos

@bighomieJ5X 2 года назад

Big Bore Kit FTW ,she's gonna fly 👏🏾👏🏾

@27Zangle 2 года назад

Used ATVs are stupidly expensive now, including here in Alaska. They are also getting harder to find in good used condition and not clapped out. Starting on January 1st, 2022 it will be legal to drive ATVs on public roads that are 45mph and under. Of course, this is with them being licensed and registered accordingly. My local coastal is not allowing ATVs in town sadly.

@c0munguyforcaz 2 года назад

quick tip for your garage, use the kids mats. they are cheap and easy to clean

@ejtakach 2 года назад

Like the fancy carpet!

@salocin2124 2 года назад

A bore kit would be epic but also don't see a lot of yamaha warrior 350 would love to see another

@shanefarmer7193 2 года назад

Taking the plastics off was an aprovement for this quad

@joshuacoyle6584 2 года назад

Made my day

@gtisid 2 года назад

you skipped past the little end bearing but it looks like it was welded to the con rod judging by the heat marks. is it still intact? does the crank turn over? hope its an easy fix

@brian395 2 года назад

Valve seals are a issue with 400's good idea to replace

@martyl7709 2 года назад

Garage looks great

@atvseatexchange2176 2 года назад

416 is the optimum size for that motor. Let me know if you need a custom seat cover, no charge, to help with the cause. When you got jammed up with that Warrior seat I couldn't believe people conduct business that way but I'm old school. Let me know if you're interested and good luck with the project.

@alexkentner5647 2 года назад

sparks racing exhaust, stage 3 hot cams , high compression piston

@johnnytwotimes7831 2 года назад

Just grab a 426 with stage two cam and a HMF exaust . Trust. Yes it will keep up with the 450 maybe even smoke it. The 440 will definitely smoke it depending on the weight of the riders on each bike. Also if you want to enjoy it alittle more widen the rear axel a half inch on each side don't really need to do the front a arms but... It would corner so much better.

@Neworleansickk 2 года назад

What was that compression test method you do there bro

@mealex303 2 года назад

Paint the nerfs yellow and maybe if possible replace the rear tyres with that spare set you got with that crazy banshee that also had wheely bar that time . I'm sure you are a glutton for punishment aren't you lol but still u kick ass eventually always. I look forward to seeing you doit again. 👍

@OGKILLa9365 2 года назад

Those nerf bars are hideous. I'd take them off and toss them in the trash

@blasterman5063 2 года назад

Is it rare to have blue a arms on a 2006 Yamaha blaster because I saw that banshee had that and it was rare

@rolfvuorinen2025 2 года назад

More and more I wach these quad vids I want to buy a quad but they are way too expensive for something desent in finland.

@antoniomancini1794 2 года назад

Great video

@user-fi3fx5my2s 3 месяца назад

Compression release stuck open, smashed piston?? Just a thought.

@DJswope73 2 года назад

Do a big bore blaster to run with the 250 2 strokes lol

@josephcarino5829 2 года назад

Thats aluminum from the piston in the bire on the one side. Brush muriatic acid on it. It will come iff

@austinmcd5933 2 года назад

I got mine mint with a 440 just a bit of rust for 1,200

@zbigniew7584 2 года назад

Big bore and silencer 👍👍

@matthewtaylor4079 2 года назад

What jump box and battery do you run?

@braaptv6838 2 года назад

Damn she looks rough, I’m sure you’re the man to bro g it back to life

@handsolo6241 2 года назад

I got a 440 ex, cam, Alien duel exhaust. Almost a match for my 450! Don't get the super high compression (Like me) piston cus buying race gas sucks. F.y.i. Almost never ride it because of that.

@RealLifeSim 6 месяцев назад

The nerf bars were a pain to get off

@kylerwilson1092 2 года назад

Do a tacate 4 vs quadracer vs trx250r

@user-fi3fx5my2s 3 месяца назад

Probably gonna need magneto cleaned up to really spark good.

@edwinsundquist8072 2 года назад

You should put a 440 kit in it.

@larrywarner9314 2 года назад

Look Joe use a heat gun on those stubborn cylinders when they don't want to come off

@megamindtvsydney3967 2 года назад

Does this motor have a oil screen? Maybe blocked

@aydancochran3321 2 года назад

Man wish you could find a Honda mt 125 Elsinore

@dereknewberry9457 2 года назад

440 kit with stage 2 hot cams kibble white vavles you’ll be fast lol

@kylebrent9720 2 года назад

I have a question I bought a yamaha raptor 660r 02 from a guy he told me all it needed was a starter and a starter relay so I tested the relay and it was buzzing so I bought a new starter and a new relay and a new battery but after I got all new stuff for it the relay is still buzzing idk what it could be maybe the cdi box but idk anyone know who can tell me what's going on with

@luixzzzz 2 года назад

If I was you mate I would sell the Junk I had an 04 660 and everything went wrong on it my bike done why same thing had to get a new battery new startor moter and cdi box also the clutch went and all this over shit I had it 2 months and it cost me £2000 in the end I sold it for £1000 even tho it was £3000 I regret not getting the wheels and tires but hey ho I have a raptor 700 now and it’s sickk iv had it longer than the 660 no problems yet .

@MM_in_Havasu 2 года назад

Tight or bent valves.

@shoes121255 2 года назад

Get one of those plastic repair tools that melts the little wire into the plastic to reinforce the repair

@LiveFreeOrRIP 2 года назад

the thing about a clapped Honda is that you can UN clap it and its worth doing it. Thats why they are awesome bikes!!! Some bikes are NOT worth the fuss they are still junk even fixing them up..

@johnbeaudette583 2 года назад

I have been curious for over a year now so I gotta ask. Does anyone on RU-vid check spark plug gap ? No channel has even mentioned it in over a year of watching these types of videos. And isn't the vehicle's stock jetting based off sea level elevation ? I haven't messed with engine's for over 35 years, so may be out of the loop or forgetful. But, i don't think they sell different spark plugs for every engine. And I have never put a plug in any type of vehicle that didn't get it's gap checked or adjusted. Just curious. Cheers

@titletownclowns1545 2 года назад

Well I do, but also index them and some other stuff (secrets). I don't just drop them in, there's power to be made if you know what you're doing. Pops

@johnbeaudette583 2 года назад

@@titletownclowns1545 Interesting. I wonder if that is why channels don't mention it. They think it is some secret sauce. Lol. Last time I really worked on small engines was when I was 12 ish years old, as far as I knew all this was basic knowledge. I guess having multiple mechanics in my family was more beneficial than I knew. Cheers

@titletownclowns1545 2 года назад

@@johnbeaudette583 Racing dirt track you have to know a lot of tricks to get by the tech inspections, subtle but sometimes closely guarded secrets from racers to give them an edge. Indexing plugs has been around for a long time but knowing the combustion flame fronts and how to get the air/fuel mixture to "swirl" in the combustion chamber (more important in auto racing engines) is a science that includes porting, angle of ports, squish clearances, height of ports to change the timing, the timing itself and type of fuel. So in conclusion there's more to the type of work done to a spark plug and what you do to it that effects the power than just "what the book says". Pops

@johnbeaudette583 2 года назад

@@titletownclowns1545 I agree. Never did any racing but, knew about some of that. Thanks for the info.

@wisecampmotorcycles8258 2 года назад

Spark plug gap is set at the factory. Unless the spark plug has been dropped, or handled badly, I've never had to adjust any new spark plug gap. If the spark plug is old, and has done a lot of miles, the gap will increase with wear.

@MarcHord-mk5ff 2 года назад

Well the tires are on it.

@alexkentner5647 2 года назад

put a kicker on it that would be cool

@aroncurtis7874 2 года назад

I got a 03 400ex and it has the 420 big bore in it...frickin thing is cherry and beets a stock 400ex buy mabye 2 quads...no cam in just the big bore.

@lildrew5516 2 года назад

How much?

@other_brother_darryl4714 2 года назад

Is it just me or does the small end of that connecting rod look like it got real hot? Almost looks black or dark blue on that end. Go for the big bore kit, might as well at this point… good luck

@wisecampmotorcycles8258 2 года назад

Nah, it's just you.

@joshuaurban2007 2 года назад

I just bought a mint one for 2800 bucks 04

@VRafaZ 2 года назад

U didn't show the piston up close

@user-fi3fx5my2s 3 месяца назад

Be a bout a 420, should be nasty, that big bore with stock head gonna make power. Trust me.

@sandmanbub 2 года назад

@Whoop!

@theboogieman401 2 года назад

Dope ! I just got the kx85 2014 going to touch her up ⬆️ my last video got 2k out of no whereeeeee ABG ANY BIKE GANG GANG BUZZ BUZZ 🐝

@EMSPROVIDER-dg4ss 2 года назад

Where's the katana quad?

@xxgtanobot12xx39 2 года назад

I found a guy selling one running just missing a battery for only 300

@dallasstepto8409 2 года назад

That thing got red hot

@m8fusion712 2 года назад

It's not a bad looking quad just needs tlc

@joetaverna5264 2 года назад

loooooksss can indeed be deceiving. Nerrrrfffff bars garbaggggeee it's obvious this quad was road extremely hard and damn it the hell put away Weeettt