It's been 3 years, so I'm sure you know this by now, but I'm writing this for others watching. You need 1 1/2 - 2" of play in the chain per the manual. This is VERY important, as a chain that is too tight can do all kinds of damage to a lot of parts: countershaft, seals, bearing, gear box... you name it. If you hit a bump with a chain that is too tight, it can easily trash your seal and countershaft. I know this for a fact, because a guy I go riding with over tightened his chain and trashed the countershaft oil seal, and probably the bearing as well. When we loaded up his bike, we saw that it was dripping oil from the crankcase cover. He has money, so he just took it to the shop and let them fix it, for how much I don't know, but he did tell me that they said it was damaged by the chain being too tight. He was lucky it was only a seal or bearing, because it can do a lot more damage. So, be careful and do not over tighten your chain, it really can do a lot of damage.
As you do more, hopefully you will start to see the benefits of cleaning the parts before assembly. But good on you for having a go. Only way to learn. When changing gearing the front sprocket has way more influence over ratio than rear and if you don’t want to run out of chain, whatever you add to rear, take off front. Also, too tight a chain can damage output shaft bearings.
Good series man. I have a pw80 that I modded a bit as well. Get a impact screw gun with a socket bit in it. It'll make taking apart nuts and bolts like those holding your sprocket on very easy. I use mine all the time working on my bikes and quads. Keep rippin that pDub! Also, get yourself and impact screwdriver too! Those will save yourself a lot of headaches too!
Thanks man! I have an impact screwdriver and screw gun as well, they were just at my dads during this video, lol. But I’ve got a bigger carb on the way so look forward to a new video with it! Hopefully it will get even faster (:
Awesome another thing until then take the stock exhaust off there's a cone in the header pipe that is a restrictor get that out I think it's welded in can't remember
With your help, I was able to get the 13-39 sprockets on my 2003 PW80. I also did a top end replacement and upgraded the shocks. Completely different bike now! Thank you for the video!
So glad I could help! My main goal of the series was to show people around the world both how fast a PW80 can be and also how capable they are with a slight suspension mod! People hate these bikes and would much rather buy a klx or ttr...
Althepal Music Probably gonna need to rejet the carb since the stock air box is crazy restrictive and putting a better filter on it will open it up like crazy.
i'm 65 years young. had 45 bikes. all sizes. watched all 5 vids about this bike. i want one. you should have added 2 links to the chain . never want it super tite. owell. p.s. - it's more fun if you build a small FIRE on the ground after the little jump. just sayin.
Yeah I would. I changed the rear sprocket back to stock to get some top speed back and left the front aftermarket. Other than that still running everything I installed in this series
take off the restrictor it is where the exhaust pipe is connected to the motor if you unscrew and take of the pipe then a spacer looking thing will fall out and then put the pipe back on with out the restricter and then it will make it so much more powerful
I lowered the front sprocket to a 13 tooth for better acceleration and balanced speed. Here’s a link to one: www.ebay.com/itm/294992419657?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=7_Zsl6K5Qu6&sssrc=2349624&ssuid=sdyKtQptShm&var=&widget_ver=artemis&media=COPY
@@mattwells3390 The rear I initially changed to a 39T but later regretted that because of such a low top speed, so I kept the stock rear and put a 13tooth front on
Pretty good ,pdubs boogie I got a 95 and a 2000 both go over 50 on flat with gps I got 53 mph ride the shit out of them every day the original mikuni carb kicks ass when tuned them babies pop
Don't do this people, first of all you need to cut a new chain to the right size. An old chain will wear out new sprockets very fast and vice versa. Also this thing now has the top speed of maybe 20 mph. Quickness off the line is gained at the expense of top speed. I've never heard anyone say a peewee 80 is a top speed monster with plenty to spare
So here is the story in my country we have this bike called yamaha mate v50 or v80 if you ever heard of it. So the engine is the same engine as the pw80 but the pw80 is way faster . In my country they use the pw80 engine and put it on a hand made frame and they drag race it. So in my country the pw80 engine is famous for drag racing . So i have a yamaha made v50 and what i did to make it faster is too boost the ignition and work the cylinder so that you can put a bigger piston my piston is a 52mm piston. But just dont boost ignition the yamaha mate has diffrent ignitions some come with F3 ignition is made for racing and F4 ignition is made for long distance but they come in 6v en 12v everyone uses the 12v is way faster. In the video that you showed us that you put 39 by 13 sprocket right on my yamaha made i use 36by14 specialy for racing. So if you wanna make your pw80 way faster than it is now you have to boost the ignition and work the cylinder (make the hole bigger for bigger pistons) put a bigger piston a 52 mm plus if you put a bigger carborator you need to put a 21 pghb dellorto to make it even faster trust me its gonna be faster . The yamaha mate is made top speed 60km per hour with out tunning the bike .now that i tunned it it goed 70+ km per hour .if you tune your pw80 just like i said it goes 75+km per hour on a open long distance road
Carson Supple I got everything for this bike from EBay. Here are the links to the Sprockets on this bike. Front 13T Sprocket: www.ebay.com/itm/324209986017 Rear 39T Sprocket: www.ebay.com/itm/333104360681
The stock front was a 15 tooth and I dropped it down to a 13 tooth, and the rear was a 32 tooth stock and I bumped it to a 39 tooth. I would suggest lowering the front to a 13 but keep the rear at the stock 32 tooth sprocket so it’s balanced speed and acceleration.
@@EthanHervig where would you insert the spacer? Doing a PW80 build on my other channel and am curious how exactly you lifted it that much with a stock rear shock
@@EthanHervig I have no idea. I put in a new carb, put in clean gas, it would start up and idle pretty good for about a day but would die when i tried driving it, and now it won't even start at all. Next thing I will try is to replace the crank seal because i heard it might have an air leak. Hoping that'll get it to work. I bought it used for 300 and you could tell these people abused this poor bike. i left it for a year and just started working on it again
@@EthanHervig completely understandable I got 12 pups plus the older 3 to deal with rn check em out on my page also I just posted a bunch of old vids I had of old toys
I’m planning on big boring it to a 54mm actually! I’ll probably make a video of it in the future but for now I’m sticking with cheap quads and dirtbikes
You don't get torque from any sprocket. Torque is delivered from the end of the crankshaft. Also, when you use a front sprocket with fewer teeth, you lower the final drive ratio, decreasing overall speed, yet enhancing acceleration at lower speeds.
Bro please wear a helmet. AND If you don't have enough links to run your sprockets you need a new chain. you are ruining your bike and I guarantee robbing horsepower. Try tightening your bicycle chain that much and see how hard it becomes to pedal. Not to mention, new sprockets on an old chain is a big no no for longevity sake
Teeszy I see what you mean! I may be losing precious horsepower... the chain is still rock solid even after riding it for a few weeks... I will definitely have to buy a longer chain for this thing
Legend has it he still is asking to try it till this very day....
Lol yup, I was more interested in revving it up for the camera 😂
😂😂
I just bought a PW80...thanks for posting your video.. now I can upgrade my bike 👍😎👍
It's been 3 years, so I'm sure you know this by now, but I'm writing this for others watching. You need 1 1/2 - 2" of play in the chain per the manual. This is VERY important, as a chain that is too tight can do all kinds of damage to a lot of parts: countershaft, seals, bearing, gear box... you name it. If you hit a bump with a chain that is too tight, it can easily trash your seal and countershaft. I know this for a fact, because a guy I go riding with over tightened his chain and trashed the countershaft oil seal, and probably the bearing as well. When we loaded up his bike, we saw that it was dripping oil from the crankcase cover. He has money, so he just took it to the shop and let them fix it, for how much I don't know, but he did tell me that they said it was damaged by the chain being too tight. He was lucky it was only a seal or bearing, because it can do a lot more damage. So, be careful and do not over tighten your chain, it really can do a lot of damage.
As you do more, hopefully you will start to see the benefits of cleaning the parts before assembly. But good on you for having a go. Only way to learn.
When changing gearing the front sprocket has way more influence over ratio than rear and if you don’t want to run out of chain, whatever you add to rear, take off front. Also, too tight a chain can damage output shaft bearings.
Yup... my front sprocket fell off plenty of times from how tight it was... I replaced the rear sprocket back to stock and it’s good now.
It’s so fast now lol🔥💨
It sure is! Its insane how just a few sprocket teeth can completely transform a slow dirtbike to a rowdy beast!
Sick video! Just picked one of these pw80's up and I LOVE it. Gotta check out your other vids now
Thank you dude! They’re great little bikes
What is the number for this front sprocket I order the wrong one
Good series man. I have a pw80 that I modded a bit as well. Get a impact screw gun with a socket bit in it. It'll make taking apart nuts and bolts like those holding your sprocket on very easy. I use mine all the time working on my bikes and quads. Keep rippin that pDub!
Also, get yourself and impact screwdriver too! Those will save yourself a lot of headaches too!
Thanks man! I have an impact screwdriver and screw gun as well, they were just at my dads during this video, lol. But I’ve got a bigger carb on the way so look forward to a new video with it! Hopefully it will get even faster (:
Send it boy
Customise a yz80 expansion chamber and put two head gaskets in to raise the exaust port
I actually bought a YZ80 expansion chamber off a 1980 YZ80 and I was gonna do that! You’ll see it in a future video
Awesome another thing until then take the stock exhaust off there's a cone in the header pipe that is a restrictor get that out I think it's welded in can't remember
@@Josh-jr1dd No way! I never knew that! I’d have to do some slicing and dicing to remove that...
With your help, I was able to get the 13-39 sprockets on my 2003 PW80. I also did a top end replacement and upgraded the shocks. Completely different bike now! Thank you for the video!
So glad I could help! My main goal of the series was to show people around the world both how fast a PW80 can be and also how capable they are with a slight suspension mod! People hate these bikes and would much rather buy a klx or ttr...
@@EthanHervig I agree the PW80 is a very capable bike! Your air filter mod also looks promising so will tackle that next!
Althepal Music Probably gonna need to rejet the carb since the stock air box is crazy restrictive and putting a better filter on it will open it up like crazy.
Ethan Hervig thank you for the advice!
@@EthanHervig great video. I shall be doing the sprocket mod on my sons pw80. Do you have video for the shock /suspension mod?
i'm 65 years young. had 45 bikes. all sizes. watched all 5 vids about this bike. i want one. you should have added 2 links to the chain . never want it super tite. owell. p.s. - it's more fun if you build a small FIRE on the ground after the little jump. just sayin.
hey man i have a question were did u purchase your exuast from?
It came with the bike but i think they discontinued them years ago. I assume they're hard to find these days
hi buddy just wondering what mm is the uni pod filter?
35/32mm..
Just got one today, with bar raisers and rear shock raiser sits like an 85 lol
Sweet dude! HUGE mods on my PW coming soon
@@EthanHervig nice il follow ya 🤙🏼
Do you know how to put back the garage pw80 brake pedal spring ? Can you send me a video or diagram how to put back?
I don’t know how to.. it couldn’t be too difficult though
After doing this mod, would you change anything now? Thanks
Yeah I would. I changed the rear sprocket back to stock to get some top speed back and left the front aftermarket. Other than that still running everything I installed in this series
@@EthanHervig what did it top out at and was the power band more aggressive?
take off the restrictor
it is where the exhaust pipe is connected to the motor if you unscrew and take of the pipe then a spacer looking thing will fall out and then put the pipe back on with out the restricter and then it will make it so much more powerful
Gotta keep it quiet for when I go through the neighborhood though😂
El eje va metido al revés es decir de la derecha va la tuerca
Thanks for the tip on the sprocket situation. How'd you get that rear suspension up like that. I need to do the same with mine
It’s just the stock shock with a 2 inch spacer on it
@@EthanHervig effet h de sbggtf de q j'y hy
can you send link to the sprockets? thinking about doing this to my pw.
I lowered the front sprocket to a 13 tooth for better acceleration and balanced speed. Here’s a link to one:
www.ebay.com/itm/294992419657?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=7_Zsl6K5Qu6&sssrc=2349624&ssuid=sdyKtQptShm&var=&widget_ver=artemis&media=COPY
@@EthanHervig what about the rear?
@@mattwells3390 The rear I initially changed to a 39T but later regretted that because of such a low top speed, so I kept the stock rear and put a 13tooth front on
@@EthanHervig ok cool thanks bro
Where did you get the shock?
pretty sick
Thanks bro🤘🏼You’ve gotta get a pitbike man they’re so much fun and cheap
Ethan Hervig I gotta 88 truck that’s puking oil on the driveway how about I finish that first 😂
Pretty good ,pdubs boogie I got a 95 and a 2000 both go over 50 on flat with gps I got 53 mph ride the shit out of them every day the original mikuni carb kicks ass when tuned them babies pop
So does this make it better in low speed and top speed or just low speed
This makes it better for low speed because it’s jumpier and quicker off the line
Can i get the link to were u got the fmf from
Gonna have to ask mom and dad for an electric ugga dugga for Christmas
I have a impact drill it’s just at my dads... my moms house has no tools lol
Take your time. You rush through things a little
Let him try it
Don't do this people, first of all you need to cut a new chain to the right size. An old chain will wear out new sprockets very fast and vice versa. Also this thing now has the top speed of maybe 20 mph. Quickness off the line is gained at the expense of top speed. I've never heard anyone say a peewee 80 is a top speed monster with plenty to spare
You should have let your friend try it out - after all he's the one filming you.
How fast it go though?
Pretty slow, probably 30 max
What do you think the top speed is because I don't want to get ride of it all
Well before I did the sprocket adjustment it probably went 45 mph but after I changed the gearing it probably goes 30 mph
whens the next part coming out, im exited cause ive got one of my one pw80 project bikes :)
This was the last part to the PW80 project series unfortunately... I will be making more riding videos on it in the future for sure though!
@@EthanHervig ooh ok but anyway this series got me into ur channel and now ur one of my favourites :) keep up the gd work
Ben Lake Thanks man! I appreciate the support (:
@@EthanHervig u deserve it :)
So here is the story in my country we have this bike called yamaha mate v50 or v80 if you ever heard of it. So the engine is the same engine as the pw80 but the pw80 is way faster . In my country they use the pw80 engine and put it on a hand made frame and they drag race it. So in my country the pw80 engine is famous for drag racing . So i have a yamaha made v50 and what i did to make it faster is too boost the ignition and work the cylinder so that you can put a bigger piston my piston is a 52mm piston. But just dont boost ignition the yamaha mate has diffrent ignitions some come with F3 ignition is made for racing and F4 ignition is made for long distance but they come in 6v en 12v everyone uses the 12v is way faster. In the video that you showed us that you put 39 by 13 sprocket right on my yamaha made i use 36by14 specialy for racing. So if you wanna make your pw80 way faster than it is now you have to boost the ignition and work the cylinder (make the hole bigger for bigger pistons) put a bigger piston a 52 mm plus if you put a bigger carborator you need to put a 21 pghb dellorto to make it even faster trust me its gonna be faster . The yamaha mate is made top speed 60km per hour with out tunning the bike .now that i tunned it it goed 70+ km per hour .if you tune your pw80 just like i said it goes 75+km per hour on a open long distance road
I’ve already got a 54.5mm HX cylinder made and a 54.5mm piston and a 28mm carb and reshaped head ready to bolt up but that’s for a future video 🤫🏁
@@EthanHervig where did you get the kit from
@@jovannygodinamendez9014 I got it from a guy in Suriname, those guys race these things professionally and make them go 100mph
Where did you get those sprockets at I can’t find them
Carson Supple I got everything for this bike from EBay. Here are the links to the Sprockets on this bike.
Front 13T Sprocket: www.ebay.com/itm/324209986017
Rear 39T Sprocket: www.ebay.com/itm/333104360681
link from the sheet on the back
It sounds like a Ktm
Do you have the links to the sprockets you bought
Front 13T Sprocket: www.ebay.com/itm/324209986017
Rear 39T Sprocket: www.ebay.com/itm/333104360681
Sorry the 13 tooth one is sold out, just look up 13 tooth front sprocket
wish i have one
They don’t cost too much you can find them used for around $200-$400
Not designed for top speed but easy ridability for beginners
Well yeah but what I meant was they come with small sprockets which makes them tuned for a higher top speed from the factory
@richie hervig what was the stock front and rear sprocket sizes? Curious how much you changed it
The stock front was a 15 tooth and I dropped it down to a 13 tooth, and the rear was a 32 tooth stock and I bumped it to a 39 tooth. I would suggest lowering the front to a 13 but keep the rear at the stock 32 tooth sprocket so it’s balanced speed and acceleration.
Let your buddy try it lol wtf dude lol 😆
Mine goes 48 with a 160 pound rider... one down on the front sprocket.
I can't remember my tooth count rn but I swear the back one is in the 40s lol
What the top speed
Can i get a pw80 engine?
What rear shock do you have on you pw?
It’s the stock shock, but with an X-Tender 2” spacer on it. Lifts up the rear end a lot!
@@EthanHervig where would you insert the spacer? Doing a PW80 build on my other channel and am curious how exactly you lifted it that much with a stock rear shock
@@julianalatorre-pianosheets3993 It's a metal rod thing that screws onto the shock shaft. I'm sure there's videos om how to install it online.
@@EthanHervig thanks i'll have to look for it, if you wanna see the build, go to A.P. Builds, your videos have really inspired me to get back on it
@@julianalatorre-pianosheets3993 Will do man! Glad I could help you get your build going again (:
Where did you find that exhaust?
It was on the bike when I bought it! I guess they’re rare now...
Did your top speed increase??
bxballa17 sadly it didn’t, The sprockets made the bike quicker off the start with more acceleration, but lowered the top speed a little.
Check out my pw80 th-cam.com/video/b9oBi_zH3SY/w-d-xo.html
If you want top speed you go with smaller sprocket
i love it
Thanks man! New video coming soon!
What suspension setup have you got
All stock suspension. The only thing i've done to the suspension is added a 2" spacer to the rear shock.
I want gas tank of pw80 with cap so can i .?
Becz it's not available in my country.
Tanks are super expensive where I live sadly. They're pretty rare! Good luck finding one though
@@EthanHervig so bro from where i should buy it ..?
@@mobeensajid2497 I would say eBay would be your best bet. Hopefully they aren't too expensive
@@EthanHervig ebay is it a site.
@@EthanHervig thnxx bruh .
Can I get links to these sprockets please :)
Sure! Here are the links:
Front 13 tooth sprocket:
www.ebay.com/itm/392908490438
Rear 39 tooth sprocket: www.ebay.com/itm/143003648338
I wish my pw80 was running so I could start doing stuff like this lmao, I can't figure out what's wrong with it
What’s keeping it from running?
@@EthanHervig I have no idea. I put in a new carb, put in clean gas, it would start up and idle pretty good for about a day but would die when i tried driving it, and now it won't even start at all. Next thing I will try is to replace the crank seal because i heard it might have an air leak. Hoping that'll get it to work. I bought it used for 300 and you could tell these people abused this poor bike. i left it for a year and just started working on it again
@@jonathansimpson3545 maybe it’s the oil injector
Still waiting on the shedding video 🙃. Came back to watch this one again
Thanks man :) Huge mods comign soon i promise! So busy lately...
@@EthanHervig completely understandable I got 12 pups plus the older 3 to deal with rn check em out on my page also I just posted a bunch of old vids I had of old toys
Add a bigger bore maybe 50mm to 52 mm thank me later
I’m planning on big boring it to a 54mm actually! I’ll probably make a video of it in the future but for now I’m sticking with cheap quads and dirtbikes
cool
You know smaller the sprocket the faster it turns and more speed you get bigger is more torque you get.
You don't get torque from any sprocket.
Torque is delivered from the end of the crankshaft.
Also, when you use a front sprocket with fewer teeth, you lower the final drive ratio, decreasing overall speed, yet enhancing acceleration at lower speeds.
@vintagemotorcyclerepair4052 thats what he meant lol 😆 you knew. 😂
Next time make sure to LocTite the bolts on the rear sprocket. ALWAYS LocTite rear sprocket bolts. Good job though.
Bad idea. Zero need for loctite on bolts that have a locking plate under them.
How tall are you?
Gaming Lightlord I am 5’9
Bro please wear a helmet. AND If you don't have enough links to run your sprockets you need a new chain. you are ruining your bike and I guarantee robbing horsepower. Try tightening your bicycle chain that much and see how hard it becomes to pedal. Not to mention, new sprockets on an old chain is a big no no for longevity sake
Teeszy I see what you mean! I may be losing precious horsepower... the chain is still rock solid even after riding it for a few weeks... I will definitely have to buy a longer chain for this thing
A yr+ after the fact. Lol. You could always just add another link to get u going.
Ride ur yz125
Why is that all you ever say?? Sometimes all you have time for is Pitbikes bro 🤷♂️Show some love for the PeeDub (:
Bro i want it urgent.