Rebuilding a Quad Using The CHEAPEST Top End Kit. How Long Will It Last?

I rebuild a Polaris Trailblazer 250cc quad with the cheapest piston and cylinder top end kit off of Ebay. How long with the top end kit last? #Polaris, #Test, #Cheap,
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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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[@2vintage]

How long will this cheap top end piston and cylinder kit (NICHE) last? Need help fixing an ATV or Dirt bike? Check out this Facebook group: facebook.com/groups/356304232071539/ Please LIKE and SUBSCRIBE if you enjoyed the video! It really helps me out a lot! Check out my Instagram: 2_vintage_ Thank you for the support!

[@_T_R_E_V_O_R_]

Always wondered how long cheap engine parts would last and what would break first but have never tried it 😂 Could last 5 hours, could last 5 years ya never know

[@2vintage]

@@_T_R_E_V_O_R_ yeah exactly

[@mrkevmulusa]

@@2vintage Hello , do You have any street legal Dirt Bikes 4 sale ?

[@2vintage]

@@mrkevmulusa no sorry I don't

[@kanerichard1279]

@@2vintage the outlaw gone I'm guessing?

[@louisjohnsonjr.4934]

That bike looks to be in great condition and that is rare where im from. Most are thrashed!! Good buy.

[@michaelthomas788]

Said the rings are worn out is why you're getting blow by could be the cylinders worn out or the person that you bought it from could have cheaply replaced the top in by just putting rings instead of replacing the piston and having the cylinder bored out to the next size piston cuz the city I live in is pretty big more than a million people and nobody cuts cylinders here they have to send it out to another state

[@corporalclegg914]

I would’ve liked to’ve seen a Compression Check after the new’ish top-end was assembled & brief break-in. we’d be able to measure the gain, though it sounds great to my Ear Meter. we can’t effectively manage what we can’t measure. there’s still time…that info could benefit those considering this product, etc…

[@mikemoses1009]

Yeah I have one I'm looking at $600 for 500 sportsman 4x4 said something like break pressure switch not letting it switch in to high gear any thoughts

[@corporalclegg914]

@@mikemoses1009 - unfortunately, I’m No Help here…maybe I/we could with more info, though. what trouble(s) are you experiencing?

[@James-sir]

Wear eye protection whenever using wire wheels sometimes the little wires fly off and will stick in your eye and it’s not a good day

[@yobro4423]

I agree . I got hit by a wire in the lip and had a hard time getting it out

[@dznuttzonyachin7499]

@@yobro4423 don't ever give a wire wheel some lip 😂

[@lorollinls]

I can confirm that this is true, from experience.

[@yobro4423]

@@dznuttzonyachin7499 I most definitely will not. She'll bite ya back😄

[@TheAwmartin]

They don’t call them “cheek pokers” for no reason.

[@jd0316]

Ritter Cycle Racing is the go to for the Polaris 250, 400 and 500. FYI.

[@highlightzilla9581]

If u wanna wait weeks for parts ya definitely but if u dont wannna wait dint go to him 😂 he always backed up think he needs hire some employees

[@Erix7810]

@@highlightzilla9581no doubt, you call him now and he says your order will be shipped at Easter time. I’m good.

[@layton9950]

These Polaris four wheeler videos are my favorite ones you do

[@gavinsholar8502]

I have a niche cylinder and piston in my 300ex and it’s held up just fine

[@yosoytdut]

how long you been running it?

[@braydenjennings4822]

is it the 330 big bore kit

[@romper4444]

Hey man any update on that 300ex big bore kit from niche? I'm looking to buying one

[@gavinsholar8502]

@@romper4444 yeah it still runs great and still has a lot of power and I’ve beaten on it pretty hard

[@manfo6577]

Bought a 90$ kit for my 400ex (piston, cylinder gaskets..) Never had issues for two years, dogged it around. Wheelies you name it. You can even see my channel I had it wide open many times. Not one bit of compression lost. Took it apart for a 440 kit, rings still in spec, cylinder no scores. service after every 10 hours..

[@2vintage]

Good to know!

[@andrewjackson6986]

body and frame wise best ive ever seen for what is it nice find man!!!!!

[@Dada8050]

I have a complete Niche top end with their 440 big bore kit on my 400ex and it runs amazing.

[@magee16749]

My brother had niche cylinder on his blaster and surprisingly it's made it almost a year no issues. How long they last depends a lot on being installed and broken in correctly

[@TypicalGuy84]

A year isn't very long at all.

[@jasonjones460]

My son and I are fixing to do the same thing to a 04 trailblazer great vid

[@willcrosbie8806]

I have one of those kits on my banshee and has been fine for the last 2.5 years

[@ionredline2006]

I have used one of these on a $300 400ex. It has actually held great. I was afraid to spend too much if the quad would never run.

[@BitcoinYooper]

Running the $76 shipped Niche top end kit in my 400ex right now. stock bore,stock comp,, stage 2 hot cam and slip on been ripping good for 2 months. Cylinder piston kits are okay. The Niche heads are kind of questionable, machining is not consistent and softer aluminum from what I hear.

[@citabria4804]

I have a niche cylinder on my 400EX with wiseco piston and rings it has lasted like 20 hours so far

[@2vintage]

Keep us updated on how long it lasts!

[@citabria4804]

@@2vintage will do!

[@sammcintire4466]

I had the same setup I had a niche 416 cylinder and a Wiesco 11.1 piston and it lasted 3 years and was still running good when I sold it

[@owenmiddlecamp6984]

Just installed one on my 400ex runs great so far

[@owenmiddlecamp6984]

@@sammcintire4466 that’s crazy , gives me a lot more confidence haha

[@Gladiatorguy1998]

That’s a clean bike.

[@frankdodson3534]

Hay youngman if you would take a boxed end wrench and slide it over the open end of the wrench you are banging on with the hammer and use it for Leverage I think you may find that some what easier try it. I believe you can figure it out.

[@kurtyoung6769]

I stopped at one minute to say "I hope you cleaned the carb. too!" That wheeler is running lean! A high quality top end wouldn't last long under those conditions.

[@mmaaddict78]

Yeah, I didn’t see any smoke coming out of the exhaust when he fired it up.

[@2vintage]

@@mmaaddict78 pump wasn't working.

[@mmaaddict78]

@@2vintage Ah, that’ll do it!

[@broo_shs]

My Buddies Polaris Trail Boss 325 Got Also Low pressure, But Reason Didn't Was In Piston Or Rings,There Was soot & Scum Between Valves And Valve Ring, So Valves Did Not Close. And some Times Just Taking Piston Out And Clean Rings

[@bradysmith5969]

I have a 1987 polris cyclone 250 and got one in so far has not blown up lasted 1 month of every day riding the old piston had a broken intake skirt it was bad but luckily did not ruin my crankcase an the cylinder sleeves were chipping too luckily caught it early

[@Davido50]

Great! Keep gas fresh /use good premix. These oil injected..into fuel? Or traditional premix?

[@bradysmith5969]

@@Davido50 it is oil injected but I pluged it I use 40:1 mix

[@falconmotorsports8323]

wow that paint looks amazing!

[@destruct61]

I had a namura piston in my Suzuki Eiger that was bored 40 over and I gave that thing hell everyday only gave it like a 30 minute break in period and it was full throttle off in the woods full time after that and it ran great no problems

[@richardkey4289]

I put in a 1mm over Namura piston (67 mm) in a suzook LT230s, it runs fine , oil control ring was a pain to slide into cylinder , but 20 hard rides so far, no problem. - I make sure to warm up.my engines before hammering, fresh fuel, fresh m/c oil & filter , & fuel filter , always

[@Ateyoshmoes]

Sometimes i think polaris makes some of the weirdest quads ever... Like who makes a 250 2 stroke trail and sport quad with reverse, electric start, and an auto transmission. Probably convenient but i think would just go with a race quad

[@2vintage]

Yeah it's pretty weird lol

[@claytongowin9897]

They are very fun tho for what they are

[@reggiexp69]

yeha them trail boss are wierd 2 stroke automatic quads.... very odd i find them and often broken for sale :)

[@nicksmith-rz2dl]

Lol gotta remember they started out make snowmobile so they kinda just slapped the engines in the quads or should say the three wheelers that where the grandfather and frankly the only ones that where automatic.

[@Nate_Allen26]

You actually listend to me when i said get a trailblazer 250

[@chrisharriman9017]

Need to use piston to push ring down and square it up . Ring gap is off you can file them to what u did in spec.

[@thelakecommander7632]

Wow that Polaris sounds like it’s ready to race a Banshee. Great video and content.

[@wecanfixit9342]

Idk about a banshee,lol but a pw80 sounds about right lmao but no it does sound good though

[@captaindeadpool1640]

2 stroke

[@brycehickman6841]

I did that same kit on the same motor fired instantly! Then rode it around the yard for about 20 mins then it ran away a top speed turned the ignition of and never started it agin lol sold the next day!

[@tpghl5225]

Air leak is probably what it was

[@jozsef6453]

Well i bought my bike with a 50$ big bore kit half a year ago and still works fine

[@mikestowe6136]

hell that looked like a quility top end kit but like ya said put a few hrs on it n see

[@TheSavvyCouple]

Nice quad and loved the video. Super helpful as I replace the top end on my 1990 Polaris Trail Boss.

[@quadman9293]

Have u herd of coparts look it up it’s so nice priced of broken down Atvs

[@milesspangler2957]

they never made a trailblazer 4x4 only 2x4 your probaly thinking of the scrambler 400 or 500 4x4

[@Yamaha350w]

Dam i miss my 500 ho scrambler 4x4 thing was a beast!

[@scottmiller3025]

I'd have put a set of rings in it and been done, unless I missed something in the process...good video

[@youngbuck3535]

Nice quad bro very clean

[@larrywarner9314]

My opinion I'd just buy a new oem or pro x piston kit hone the original cylinder and put it back together instead of using inferior parts .

[@2vintage]

Yeah not my quad. The guy who owned the quad wanted me to install the kit.

[@actual_brog]

You may still need to re-jet the carburetor for higher compression. Nice looking quad!

[@motomedic72]

How does jetting affect compression? I think this is bad information.

[@travisbellew7485]

@@motomedic72 lower compression runs leaner

[@yungBitta291]

My ocd would never let me put that rusty dirty head pipe on it and that side of the motor would be wire wheeled to and painted

[@tomatoknuckles]

One of my pet peeves about this channel is he never cleans stuff he's about to work on. I bet alot of shit falls down to the crank and in cylinders. Very messy "mechanic"

[@lt-z-quadnation6644]

You must have some cool neighbors with you running those 2 smokers all the time ? 😂 Except for the Karen that called the cops on ya for riding on the street that one time . 🤣🤣

[@2vintage]

Yeah she just sits and waits for me to test ride down the road lol

[@Bri-tg6xr]

I've done top ends on these without taking the clutch off, it's tough but it can be done. Same top end setup on the trail boss also. Please do a compression test, would like to see the change before and after.

[@DJswope73]

How?

[@geopioneergsxr5357]

​​​@@DJswope73's not even tough.. The nuts are no harder on the left side than the right side to take off.. 14mm wrench takes them all off. 100% pointless to take off the clutch. I just did it without touching any of the clutch stuff or foot rest in 5 minutes..

[@MotoDoc304]

I used a niche piston in my trailboss 250. Compression was at high 60s, took apart the top end piston and rings were shot and there was a pretty good scratch on the jug. I had got the quad for less than $400 so didnt want to put too much into it. Ended up keeping that cylinder Bought the niche kit for like $40 compressions at 102 now so not high but high enough to start run and drive. Ive probably only put like an hour or two on it but its running and personally because of how easy it was to swap (took me under 2 hours) i would buy again but basically only for testing purposes. If i was going to take a long ride id swap to a wiseco. Cast pistons are too hit or miss

[@j-beatsimaginationstudio1987]

Sounding great!

[@jonnyonwheels]

Is this a customers bike or one you bought?

[@connersnow298]

Awesome vid and edits and filming and bikes

[@2vintage]

Thank you!

[@mrblaze8191]

I got this kit in my trail blazer and I got 2 long rides on trails in sand and no issue so far but there are cheap quality

[@kurtyoung6769]

I stopped at 30:13. Did you wash the cylinder with soap and water several times before installation? If not the top end will not last as long as it should.

[@Guadzilla459]

😂first time I heard of that after you wash it with soap and water you don’t put brake cleaner or oil to not make it not rust

[@andrewstahl6916]

Duuuuuudeee my family used to have one, it was white and yellow. First 2 stroke full sized bike I ever rode. We named it the monster, but we ended up selling it to buy a better bike for trails

[@ZaidenGoltry]

I want to thank you. taday has not been a good day. I was riding my polaris scrabler 400 2 stroke, and my cylenter and piston ate the shiter and.this video gives me hope my Atv will still last:)

[@FPVSlacker]

I used a niche top end kit on my raptor 660 and the head gasket failed after less than 10 hours of riding because the cylinder sleeve dropped. This is a very common issue in these kits.

[@thetwostrokerebuilder]

Those have double crank bearing on clutch side that go bad . I've done alot of these engines with that problem over the years. Causes air leak won't run right and top ends won't last long. Not saying yours is just saying 🔧🔧

[@Davido50]

Good pt!

[@ericsmith9988]

He should vacuum and pressure check before and after a rebuild to check for leaks

[@joshuacoyle6584]

So close to 200k

[@m8fusion712]

Awesome video man

[@jonbaggarly6969]

Man I got a whole kit identical to that for my sport 400 and I did everything per manual instructions and I've had to work on it since there too soft

[@2vintage]

Yeah I used the oem top rod bearing off the quad. I hear the bearing is the fail point on these kits.

[@jonbaggarly6969]

@@2vintage oh yea no matter how much oil or assembly lube they heat up sooo quick I've put 3 together in the past couple years and I have 3 junk wrist pin bearings all heated on first start up

[@fullmetaljacket7]

21:20 that's a cast iron cylinder. It can be bored over. There was no need to buy a new one unless you can't find oversized pistons.

[@2vintage]

New one was cheaper than boring it over and buying a bigger piston.

[@kernelbadness]

@@2vintage just please keep the oem cylinder and parts for the next owner.

[@BitcoinYooper]

Pretty much where it's at for me as well. No machine shops in my area, and would have to send out. Closest shop to me is Wisconsin looks like U.S. Chrome or Manitowoc Machining. And want $100 a punch. Got a whole shelf full of cylinders that need boring for my 400ex and snowmobile.

[@kernelbadness]

The main issue with these "kits" is the wristpin bearing and piston are crap. They are prone to premature wear and when they let go they take out your cases leaving a much more expensive fix. Not to mention casting flaws. Cases for older machines are getting harder to come by for this reason. Not saying these kits are all bad. Typically it's the installer and a tuning issue.

[@samael3223]

Nice quad

[@project4stroke876]

what do u do for the heat??? do u have a AC in your garage? dumb question. but I live in Minnesota and cannot be in my garage for long to work on my bikes cause its so damn hot.

[@ElectricityFearsMe]

What are those plactics?

[@orionwarren4244]

'Gotta get DEEZ NUTZ on now' 31:41 LoL

[@jeremyhanick1475]

What is amazing is I watch all your new stuff and just got this quad and wanted info on it and what do you no it's you fixing the quad I have now that's fantastic

[@rabbyredpath3598]

Those are getting hard to find, polaris trail blazer 250 2 smoker

[@broo_shs]

Daam that sound like metal banging tik tok machine

[@busarider9244]

It’s not gonna last better check the oil injection. I don’t see any smoke it’s not getting enough oil.

[@magee16749]

Need to invest a spring puller Buddy or cut a notch in a junk flat Head.

[@Wonkawiz]

If your point was to test the durability of the cheap kit for your viewers, why would you reinstall OEM parts?

[@brian395]

that's normal for Chinese quality control some last years some last minutes

[@gazclayton787]

If your going to feel for scratches top tip take your gloves off 😜😂😂

[@shartne]

when I suggest you paint the plastics with auto paint I got downed in comments saying it would be a shit job. but I can see now I was right it looks really nice.

[@christopherburton4623]

Where does the vent from the new head go?

[@wisecampmotorcycles8258]

Still pumping that throttle I see, while your trying to start a cold engine with the choke on, lol man, don't you ever read the comments?

[@wecanfixit9342]

Yeah he doesn't know that opening the throttle defeats the purpose of using the choke lmao 🤣😆

[@wisecampmotorcycles8258]

@@wecanfixit9342 he would know, if he reads his comments. I've mentioned it to him several times. He's just not interested in learning from people more experienced than himself. His videos are comedy to me, I always get a laugh from things he does. 😂 He could do better, but he just won't take advice.

[@DM-te3cj]

Bro dont use blades to take old gaskets off u can take away the metal doin so use a propa tool

[@ericsilverware4561]

Sharp quad gonna be a good resale for you

[@txplumcrazy]

I would like to see u do the carb rebuild

[@Aidan-xy8jq]

Hi @2vintage I’m looking at a 99 KTM 200exc and I saw u once had one just wondering if it’s a good bike to buy thx

[@2vintage]

Mine wasn't that great. It depends how the previous owner cared for it.

[@Aidan-xy8jq]

@@2vintage ok thanks

[@ttvpuresimp0428]

200k here we come!

[@royhenson3379]

Let's Go 200k

[@calinmanasturean9774]

I really want to see you on a yamaha wolverine 450

[@0001Noah]

I know it's an old video but I wanted to ask anyway. When you're running it before the rebuild you can hear a rattling type noise, and after the rebuild it goes away. Do you know what this sound is? Is it piston slap? My machine makes the exact same noise before and after I replaced the piston but not the cylinder, I just lightly honed it.

[@CarlosC77]

It's your cam chain, I have a 00 trailboss I am replacing because of that right now. Same exact sound

[@0001Noah]

@@CarlosC77 The one in the video and mine are both 250 2 strokes. I continued to ride mine but it had running issues and wouldn't start hot. I had to get the cylinder bored over. Noise gone, so it was piston slap from a worn out cylinder in case anyone else wants to know.

[@CarlosC77]

@@0001Noah Oh I totally forgot they made 2 stroke trailbosses lol! Thanks

[@grandpa-of-3898]

Good job you where right on that bearing but do your self a favor go by a car warsh and clean some of them up before you work on them but great video 📹

[@hectorsanchez2146]

What type of oil or fluid go in the front container?🙏🏻

[@chaddowns4680]

Be cool to see ya get some old school shit. Like Rm370,PE250 etc..

[@drmoretz]

I’d like to know what kind of paint they used on the plastic, it looks really good

[@JUNKERBABY]

Thumbs up for the video thumbs down for the commercials

[@Davido50]

That thing sounds an runs soooo badly . Look great tho. Chassis needs greasing badly. Worth fixing right ✅

[@colestella7856]

Hey your almost at 200k subs

[@sneakersoliver275]

How do you compare the trailblazer to the ATC 250r? I can’t find a ATC 250r for sale in my area so I’m thinking 2 stroke dirtbike or a trailblazer.

[@sheldonbollenbach2075]

2 stroke rings dont float.they stay fixed by the pins in the piston grooves.i would think ring gap would be irelevant.

[@tpghl5225]

Most rings come pre gapped on top end kits but it’s always a good idea to check.

[@SuperBigdanno]

They still need room to expand at the ring tips, sometimes you have to file them a little to make the gap correct. BTW he did not check the gap the proper way any how, need to square the ring in the bore with the piston skirt not by eye

[@traveling_country_ranger_]

First! That thing is sweet!

[@jeredalmeida1880]

When are you gonna pick up a Cannondale 440? Would love to see you do a video on that one!

[@Erlov71]

Thats basically me everytime i go on ebay for parts for my bikes lmao

[@jaejae7420]

NICE QUAD! WHERE DID YOU GET THE YELLOW GUARD COVER THATS ON THE FRONT??

[@GYPSY400]

I would have replaced the rings with OEM and honed the cylinder then Sent it!!

[@austindial4572]

Where’d you get the plastics from?

[@marcos22571]

Where did you buy the stickers?

[@heathgrisham500]

Where can I find that brush gaurd?

[@johnnyjohnson2942]

Suspension bearings and bushings are roached.

[@ty717atv4]

thanks for the content

[@410fishing5]

I like these vids like your most recent one but is there vids I’m missing more recent on if there still holding up?

[@coloradodirtbike5930]

You buy a knock off piston with a ton of bad reviews to save $20-40 dollars.. But when it shatters or throws a ring and blows out your cases, or ruins the cylinder and heqd bare minimum, you will be wondering why you did that. Take a lesson kids DON'T SKIMP OUT ON MAJOR COMPONENTS AND BUY CHINESE MADE PARTS FROM THE 10 YEAR OLD USING RECYCLED METAL TO MAKE THOSE PARTS IN CHINA! And its better to have too much gap between the rings (you lose a little compression) but too tight of a gap and you will blow up the bike in short time as the bike heats up. Your supposed to file the ring end until your in proper spec if the gaps too small...

[@ronrichards2691]

Some people just dont get it they get new piston an rings never file for ring gap never plug chop just look at the tip of plug an say its fine by the looks he didn't bleed the oil injection pump idk thats just my thoughts

[@coloradodirtbike5930]

@@ronrichards2691 there are real mechanics and then there are butchers 😂.

[@2vintage]

@@ronrichards2691 yes I did bled the oil injection pump

[@ronrichards2691]

@@2vintage what happened to it oil stop pumping or cable was to slack idk i just do shit a lil different from others i dont like playing with shit 10 times

[@zaneclark5226]

sounds like it's running rich, try coming a quarter turn out on the air/fuel screw

[@BiggieEighth]

It’s lean lmao

[@worldrage619]

I’m not certain but it looked like you had both ring gaps on the same side. Aren’t they supposed to be facing opposite sides?

[@quadman9293]

Look up coparts good Atv prices