PW80 Rebuild First Fire

Finish up reassembling the engine and go ahead and give it a rip.

[@liftedmike7415]

Hey just wanted to let you know that this pw 80 build series has really helped me tackle the case splitting on the pw I just bought!!! I dont have a manual so I appreciate you taking the time to film and upload so others can see. Hopefully I get mine running within the next 2 weeks. Im at the step of applying the yamabond and sealing the cases together lol. Thanks again!!!!!

[@dirtbikedadgarage4662]

Glad this was a little help. Thanks for watching.

[@alazanjoe]

Very informative and helpfull videos bro, Thank You.

[@soer826]

can you make a whole video from start to finish pw80 rebuild pls

[@zykotic6649]

Very useful for my rebuild thank you very much!!

[@chadacker6630]

Did you have any issues with the flywheel key being machined in the wrong location? I've been looking into the Niche Amazon crank but noticed a lot of reviews have stated it's keyed wrong. Wondering if it's only some or all of the stock. Awesome video btw very helpful. I'll be using this for reference when I do the project.

[@iamvenom.2.060]

How much would a full rebuild cost my buddy has one he will sell for $10 but it has 0 compression

[@dirtbikedadgarage4662]

That kind of depends on what the actual issue is. If it is just no compression could be bad gaskets on the cylinder and head(cheapest) all the way to need new piston rings or piston or cylinder/head(most expensive). But 10 bucks I would have snapped it up no questions haha. Thanks for watching!!

[@gixmoxxx832]

Sell it to me sir

[@ktmshane4504]

Great project I'm working on one myself

[@dirtbikedadgarage4662]

Awesome. Should be posting videos again soon. Thanks for watching!

[@LL-wc4wn]

Please upload next vid in series. Interested in how chinese top end and crankshaft goes and tuning

[@dirtbikedadgarage4662]

Will be uploading again soon. Thanks for watching!

[@LL-wc4wn]

@@dirtbikedadgarage4662 i got your video confused with another. You didnt use chinese one, you used niche parts

[@LL-wc4wn]

@@dirtbikedadgarage4662 looking forward to it love your vids

[@morgannolen8954]

I've got a pw 80 and it only moves slightly when I give it gas in gear and also the oil is light brown and really liquidy dp you know what that could be

[@tyler.redpath]

good video man looking for a project bike to start my channel off love from tasmania

[@dirtbikedadgarage4662]

What are you going to choose? Thanks for watching.

[@tyler.redpath]

@@dirtbikedadgarage4662 what ever comes up for the right price. i live in tasmania and not many bikes r sold here for a good price

[@truongmichel3524]

Thank you man, super vidéo merci 👍👍💪💪

[@dirtbikedadgarage4662]

Thanks for watching!!

[@leescoey]

hi been watching a lot of your vids and noticed everyone as a lot of problems with aftermarket carbs including myself a nightmare to be honest i have recently put a dellorto phbg 19.5mm carb on my sons with a k&n style mushroom airfilter and the bike is running a lot better and quicker and does not bog at the end of revs ie it revs to maximum and also you can get jets for that carb to actually tune it to its full potential

[@dirtbikedadgarage4662]

I have since gotten an OEM and swapped out the jets to match the air filter and we are running just fine. Bout to swap it for a yz85 since we are outgrowing it.

[@leescoey]

@@dirtbikedadgarage4662 ps i just sold the lads pw80 last month as got a taj small for him i bought him a rfz 110 semi auto pitbike £700 brandnew delivered to the door i made the silencer quieter as very loud the bike as been faultless so far it gets up a lot of big hills but hes only 10 and not ready for that next big step to the 85 2stroke yet only trouble with the small 2stroke engines very problamatic i hope you put some vids on when you get one i enjoyed watching your pw80 vids they helped me a lot

[@Jerry-oq2ej]

What is the compression of your pw80 because I put a new jug head and piston and rings and new seals and gaskets and I get 80psi for compression

[@dirtbikedadgarage4662]

There isn’t a listed compression for the 80 but it should be closer to 100. You could check all your seals and your head and base gasket to make sure you aren’t losing air anywhere. Also good to measure the cylinder and piston and rings to make sure you have a good seal.

[@Jerry-oq2ej]

@@dirtbikedadgarage4662 I think it might be my crankshaft causing the piston from sealing wrong it doesn’t spin smoothly and the connecting rod was pretty sloppy

[@LL-wc4wn]

What is the name of the book you referenced at 2:45 doesnt look like yamaha pw80 manual?

[@dirtbikedadgarage4662]

It’s a clymer manual. Thanks for watching

[@jawadhammou2079]

Where did you find the plug for the oil pump ? Thanks

[@dirtbikedadgarage4662]

Check out eBay or Amazon by typing pw80 oil injection plug. There’s also a site out there called pw80only.com they sometimes have them in stock too. Thanks for watching!

[@jawadhammou2079]

@@dirtbikedadgarage4662 Perfect, thank you 💪🏼💪🏼

[@Bthaman69]

Adding torque specs would make these videos epic bro

[@dirtbikedadgarage4662]

I have one more 80 engine I’ll post a full rebuild with torque specs and hopefully limited mistakes haha. Thanks for watching!!