Dale Sweger
Dale Sweger
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Yamaha Gt80 GT1 Chamfer ports, replace condenser
In this video I address what I believe is piston rings catching on the ports. So, I pull the head and cylinder and indeed you can see that is exactly what was happening. So chamfering was done to the ports, and the edges of the rings were lightly sanded. I also replaced the condenser that was causing the points to be very sparky. After this work the engine ran much quieter, and the sparky points disappeared.
Переглядів: 1 585

Відео

2 stroke Leak down tester, make your own, DIY
Переглядів 1,2 тис.21 годину тому
In this video I make a two-stroke leak down tester. I bought all the parts from Amazon and even had some parts left over. All for 49.05. www.amazon.com/dp/B082V8FJQJ?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 www.amazon.com/dp/B07W5TGX8B?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 www.amazon.com/dp/B07VJK7KML?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 www.amazon.com/dp/B0823ZVWFB?ref=ppx_yo2ov_dt_b_fed_asin...
Yamaha GT80 assemble, adjust, Will It run
Переглядів 1,7 тис.День тому
In this video I finish up engine installation. While doing so I have to troubleshoot why the engine will start and die immediately. The finding is a bad coil. This was noticed during kicking the engine over multiple times while looking at the spark plug. The coil was replaced with a used one I had on hand. The engine did start and ran very well. While running engine and putting the microphone c...
2 Stroke Leak Down Check, how to, DIY
Переглядів 2,4 тис.14 днів тому
In this video I show you how to perform a leak down test on a two-stroke motorcycle.
Yamaha GT80 GT1 Top end assembly
Переглядів 2,4 тис.14 днів тому
In this video I build the top end on the Yamaha GT-1, I check the piston and cylinder clearance, check the points, and assemble the magneto.
Boring a 465 Yamaha
Переглядів 13 тис.21 день тому
In this video I bore a IT465 Yamaha from .25mm to 1mm, using the Jet milling machine.
Yamaha GT80 GT1 lower end assembly
Переглядів 1,6 тис.21 день тому
In this video I do a complete lower end build up of the 1973 Yamaha GT-1.
Suzuki TS185 Crankshaft assembly and true
Переглядів 1,3 тис.Місяць тому
In this video I finish inspection, then start the assembly and truing of the 1972 Suzuki TS185 Crankshaft. I go over all details start to finish.
Suzuki TS185 Crankshaft disassembly and inspection
Переглядів 1,4 тис.Місяць тому
In this video I discuss flywheel pullers and talk about how the incorrect one can damage your crankshaft. I then inspect and disassemble the crankshaft.
New Project introduction, Honda SL 70
Переглядів 1,9 тис.Місяць тому
In this video I introduce a new project, the Honda SL-70 build, using a Lifan 125 engine.
Yamaha GT80, GT 1 crankshaft build
Переглядів 1,8 тис.2 місяці тому
In this video I build the crankshaft for the 1973 Yamaha GT-1, GT-80 mini enduro. Runout is checked on the Jet metal lathe, along with axial play and big end bearing clearance.
Yamaha HS1 90 twin, timing and tuning
Переглядів 2 тис.2 місяці тому
In this video I install new points and condensers and set the timing using a dial indicator and a light bulb. Then I pull the carbs again and install one new float and two new float bowl gaskets. This has fixed the constant seeping of the float bowls, and the new float replaces the one that was compressed.
Machining crankshaft, Yamaha GT1 Yamaha GT80
Переглядів 2,7 тис.2 місяці тому
In this video I machine the crankshaft for the 1973 Yamaha GT1 to accept thrust washers. This is done on the Jet Lathe using a homemade turning adapter that performs off center turning operations. Once the material that is required to be removed (.040 per half), then the top of the halves are milled off in the Jet milling machine so the axial measurement can be made at the big end pin location....
Will it run, Yamaha HS1 90cc twin
Переглядів 2,2 тис.2 місяці тому
In this video I go over some problems and solutions, and the Yamaha HS1 fires up for the first time in months, after a complete lower end crankshaft build and top end bore. End up having some ignition and carb issues but get them sorted out for the most part, parts on order and will revisit the timing and condenser issue and carb problems.
Yamaha HS1 90 twin top end build part 2, install in frame
Переглядів 1,5 тис.2 місяці тому
In this video I get the new piston and finish the top end build. Then install in the frame and assemble most of the frame and engine parts. Getting ready for the will it run video. Yamaha AT-90 Twin assembly video ua-cam.com/video/mIjmuAko4qo/v-deo.htmlsi=XRZUq9g7OXaxYbr_
Yamaha GT80 New cases, crankshaft and case measurement
Переглядів 1,8 тис.2 місяці тому
Yamaha GT80 New cases, crankshaft and case measurement
Yamaha HS1 90 twin top end build
Переглядів 1,3 тис.2 місяці тому
Yamaha HS1 90 twin top end build
Yamaha GT80 lower end tear down, GT1
Переглядів 2,4 тис.3 місяці тому
Yamaha GT80 lower end tear down, GT1
Boring Yamaha's smallest twin, HS1, 90cc twin
Переглядів 2,6 тис.3 місяці тому
Boring Yamaha's smallest twin, HS1, 90cc twin
Yamaha GT80 first look and teardown
Переглядів 3,8 тис.3 місяці тому
Yamaha GT80 first look and teardown
Yamaha HS1 90 twin lower end build part 2
Переглядів 1,5 тис.3 місяці тому
Yamaha HS1 90 twin lower end build part 2
Yamaha HS1 90 twin lower end assembly
Переглядів 1,5 тис.3 місяці тому
Yamaha HS1 90 twin lower end assembly
Will it run, Kawasaki F7 Bushwacker
Переглядів 2,1 тис.3 місяці тому
Will it run, Kawasaki F7 Bushwacker
Kawasaki F7 Bushwacker assembly and repair
Переглядів 1,3 тис.3 місяці тому
Kawasaki F7 Bushwacker assembly and repair
Kawasaki F7 Bushwacker install engine, assembly
Переглядів 2,2 тис.4 місяці тому
Kawasaki F7 Bushwacker install engine, assembly
Ride Montana on a Suzuki TS250, Big Sky Country
Переглядів 2,8 тис.4 місяці тому
Ride Montana on a Suzuki TS250, Big Sky Country
Yamaha 360 MX top end build and other repairs
Переглядів 2,4 тис.4 місяці тому
Yamaha 360 MX top end build and other repairs
Boring a motorcycle cylinder Yamaha 360MX
Переглядів 6 тис.4 місяці тому
Boring a motorcycle cylinder Yamaha 360MX
Yamaha AT 2 125 Enduro Top end build and timing
Переглядів 1,6 тис.4 місяці тому
Yamaha AT 2 125 Enduro Top end build and timing
Boring and honing Yamaha 125 Enduro AT2
Переглядів 6 тис.4 місяці тому
Boring and honing Yamaha 125 Enduro AT2

КОМЕНТАРІ

  • @IbuFany-o1p
    @IbuFany-o1p 5 годин тому

    This engine like yamaha rx king 135, same contribution

  • @dougmackinnon8636
    @dougmackinnon8636 День тому

    Great video, I’m restoring a 1972 Yamaha U7E that’s been sitting since 1976. The engine was full of water for at least the last year. Upon reassembly of the transmission, I found the oil pump seized. I removed the input gear and gently worked the shaft BKWD/FWD. it seems to spinning freely now. My better judgement says to disassemble to inspect it but are parts available? I’ve already replaced the seal on the input shaft. I’d hate to abandon it.

  • @dermotmcloughlin9609
    @dermotmcloughlin9609 День тому

    Hi Dale, it's great to see you take pride in your work. Slightly related, i got caught before where i fitted a refinished head and barrel, it rang like hell untill i figured out the little rubber damper blocks had not been refitted. They make a huge difference. All.the best

  • @sutrotka3828
    @sutrotka3828 День тому

    Hey dale thanks for the great video. I’ve been watching for a while and just a couple weekends ago got a ‘74 f7 175 blue in color. For the life of me I cannot find the name or part # of this specific part, it’s the metal tube with a 45ish degree bend in it that the oil pump cable runs through. It threads into a hole when the oil pump cable enters the compartment with the oil pump. It’s right in frame at 5:00. Can you or anyone else help out with a name or part number so I can replace my broken one? Thanks 😁

    • @montana2strokeracer
      @montana2strokeracer День тому

      It is part of your oil pump cable. If it's missing you will have to find a new cable. Thanks for watchin, hope to see you back on a regular basis.

  • @jamesws3
    @jamesws3 2 дні тому

    Another great video. Learned how to identify rings catching and how to solder a condenser back in. Even to my untrained ears I hear less noise from the cylinder than in the last video. Way back in the day I knew a kid with what looks like this same bike. Well done!

  • @MrJmattr3
    @MrJmattr3 2 дні тому

    I get smarter with every one of your videos..

  • @Rick-ro8bf
    @Rick-ro8bf 2 дні тому

    I just finished a 74 GT80 a couple weeks ago. Full engine rebuild just like the one you're working on. I put one of those $9.00 ebay coils and barley had any spark. Put it on the meter and the primary and secondary were way way of factory spec. I ordered an Emgo Coil 24-72400 and it ohmed dead on factory specs and works great, hopefully it stays that way. HAHA Yam has OEM but they want $80+..... Emgo was $20 off the jungle site.

  • @nicholasslone7815
    @nicholasslone7815 2 дні тому

    Are these engines the same as the MX175

  • @VintageGearMan
    @VintageGearMan 2 дні тому

    Boy am I glad you are covering this cylinder. I am sure I will have to do the same de-burring scenario. What is the head bolt torque settings for the Yamaha 1970 AT1 E 125? I do own a new inch pounds toque wrench. I also have a foot pounds torque wrench.

  • @petermckee1061
    @petermckee1061 3 дні тому

    Finally got here! Another fine video Dale. Nice work diagnosing that noise. Always a pain fixing the neglect of another. Have a great NYE and all the best for a happy and healthy 2025. Cheers, Peter.

  • @gregslair4278
    @gregslair4278 3 дні тому

    Great job as always and great video 👍

  • @cainbeeping8480
    @cainbeeping8480 3 дні тому

    Nice job brother catching that problem. A very cool bike.

  • @SeanCramer
    @SeanCramer 3 дні тому

    What grit ball hone Do you recommend?

  • @bigmurr725
    @bigmurr725 3 дні тому

    Thanks Dale great video . She still sounds a little noisy to me . Thanks for all your hard work Dale .

  • @markhicks9545
    @markhicks9545 3 дні тому

    Looks like the piston doesn't have enough support when it to the bottom of its stroke maybe or maybe not

  • @leepeffer1304
    @leepeffer1304 3 дні тому

    I have never heard you mention timing and modern fuels. Here in Tucson I really only have access to 91 octane ethanol fuel. Should I be retarding the timing on my vintage 2 strokes to account for this? I think the RD400 manual said 2.3 and the CS5 is 1.8. Thanks.

  • @LarryJohnson-tc7xc
    @LarryJohnson-tc7xc 3 дні тому

    Good morning Dale, I'm ready to investigate just to see what you find.

  • @BRP-u7t
    @BRP-u7t 3 дні тому

    Great catch Dale! A less experienced/less caring person wouldn’t have caught it or would have just let it go. I really appreciate your attention to detail, the experience,and passion you put into your work it really shows in your videos. Have an amazing 2025!

    • @montana2strokeracer
      @montana2strokeracer 2 дні тому

      Thanks for the kind words BRP. Hoping to have lots more classic motorcycle videos in the new year. Happy new year.

  • @richb419
    @richb419 3 дні тому

    Hi Dale, good catch! that is the problem with more than one person working on the same machine. one person thinks that the other person did what needed to be done, therefore something always goes wrong.

  • @retromechanicalengineer
    @retromechanicalengineer 3 дні тому

    You shouldn't have to double check other people's work, but sometimes you do! Great diagnosis and recovery Dale. I'm lucky as the people that do my rebores seem to be as diligent as you are. Hope you had a wonderful Christmas, here's to another year of two stroke fun. Best wishes, Dean.

    • @montana2strokeracer
      @montana2strokeracer 2 дні тому

      I agree Dean, you really need to use shops that know motorcycles, most of the Job shops in my area will not bore a two stroke. Think they have had too many returns because they just didn't know. It's up to the customer to tell them the clearance they want and that it needs chamfered. Otherwise, they just give it a WAG. It's not that they are not diligent, they just don't know.

  • @debbiewillis1302
    @debbiewillis1302 3 дні тому

    Hi Dale, with your new camera your videos have gone to another level. Really enjoyed the GT80 videos as I do all of them. Keep them coming. Got my shed extended and a new motorcycle lift, having fun too. I must have been a good boy for Christmas. Barry

    • @montana2strokeracer
      @montana2strokeracer 3 дні тому

      Hey Barry, thanks, this GT80 is cool indeed. Thats great now you have more room for more bikes. LOL, you will never know how you ever worked on bikes without a lift. I couldn't do it without these days, my old muscles and bones ache too much. What you are working on these days any new bikes, mustangs?

  • @luismelero6198
    @luismelero6198 3 дні тому

    Good job Dale! Anyway, what is your dog name?

    • @montana2strokeracer
      @montana2strokeracer 3 дні тому

      Thanks Luis got two dogs the one that is white, brown and black is Rascal, the solid black one is Zip.

  • @RDEnduro
    @RDEnduro 3 дні тому

    I went back to the other video there is a ringing, its kind of monotone but gets alittle louder sometimes. Maybe that was it, i never knew rings could make that.

    • @montana2strokeracer
      @montana2strokeracer 2 дні тому

      I did the same thing, there was something just not right about the sound, it needed to be investigated further.

  • @vintubeable
    @vintubeable 3 дні тому

    Nice video Dale ... 👍 Gives an insight into developing an eye for detail and use of the right tools and the right amount of usage.

  • @johnreid2837
    @johnreid2837 3 дні тому

    She really sounds great.

  • @chadpyett6441
    @chadpyett6441 3 дні тому

    Great video good job on the finish

  • @frankdillon6127
    @frankdillon6127 3 дні тому

    very important that the wires don't touch the metal edge of the condenser can.

  • @frankdillon6127
    @frankdillon6127 3 дні тому

    anyway to describe what the sound was you heard that was caused by the ring clipping the port edges?

    • @montana2strokeracer
      @montana2strokeracer 3 дні тому

      more ringy dingy than usual, and louder than just piston slap

  • @geraldsgarage4100
    @geraldsgarage4100 3 дні тому

    I always thought the GT80 was the coolest little bike built!

  • @frankdillon6127
    @frankdillon6127 3 дні тому

    good evening Dale!

  • @leepeffer1304
    @leepeffer1304 3 дні тому

    So if the timing light doesn’t agree with the TDC? My bike has really obvious timing marks because the advance is on the outside, but only the left cylinder lines up when the cylinder is as the 1.8mm TDC when it is timed (manual says to pin the advance for timing). The right cylinder is probably 2 scribe widths off.

    • @montana2strokeracer
      @montana2strokeracer 2 дні тому

      I would trust the dial indicator more than the marks. I'm not sure what you are referring to (pin the advance). My machine is nonelectric start, so it has no flyweights to retard timing for the electric start. Otherwise, my machine is full advance all the time. Most nonelectric start Yamahas of this era are.

    • @leepeffer1304
      @leepeffer1304 2 дні тому

      @ I just meant that the CS5 does have the flyweights for the electric start, but the manual says to pull the weights out to full advance and wedge “a matchstick, a bent spoke, or something similar” in there to hold the advance mechanism at full advance and time from there. The spec I have is 1.8mm (.0708”) and both cylinders are timed at .0695”-.070”. I have heard mention of using altered timing to compensate for ethanol, but I don’t know about that since this bike has a claimed 7.1:1 compression. Maybe it is time to start making non ethanol or buying aviation gas for the vintage parts of my collection. Regardless, thanks as always for the great videos. Super helpful. Lee

  • @MrDigital9
    @MrDigital9 3 дні тому

    wher can i get f7 parts bud

    • @montana2strokeracer
      @montana2strokeracer 3 дні тому

      Hard to find my friend, Ebay is likely your best source.

    • @MrDigital9
      @MrDigital9 20 годин тому

      @@montana2strokeracer THANK YOU

  • @nicholastighe8450
    @nicholastighe8450 4 дні тому

    Hi Dale , have you had experience replacing the fuel inlet pipe on mikuni carburetors? I was asking because i currently have a mikuni carb i am fixing up but it needs a new fuel inlet fitting and not sure whether to press fit ? I have not had good experience using jb weld to glue/seal so was wondering if you had any suggestions ? Thanks , Nick.

    • @montana2strokeracer
      @montana2strokeracer 3 дні тому

      Yes, I have had to repair or replace them when they fall out. I try to swell the tubing slightly and tap back in place, no glue used by the Mikuni as far as I know.

    • @nicholastighe8450
      @nicholastighe8450 3 дні тому

      ​@@montana2strokeracerHi Dale , thanks! do you normally just apply some heat with a brazing torch then tap into place? Thanks again

  • @MrDigital9
    @MrDigital9 4 дні тому

    THANKS FOR THESE VIDEOES! Do you know the best place to get a top end rebuild bot this year and model?

  • @customgaragemoto7590
    @customgaragemoto7590 4 дні тому

    Top 👍👍👍👍👍👍👍👍👍👍

  • @paulkelly4900
    @paulkelly4900 5 днів тому

    Would you have a link for the plugs

    • @montana2strokeracer
      @montana2strokeracer 4 дні тому

      Are you talking about what you use to plug the exhaust or intake? Those vary from bike to bike; you have to make or find things that fit. The hardware store has rubber plugs and plastic pipe fittings, and you can make a steel plate or aluminum plate to bolt to intakes after carb is removed. If you need to plug the sparkplug hole and add air there, break off the porcelain of an old plug find a steel tube that fits your plastic hose of your tester and JB weld it in the plug adapter. Just use your imagination you can find stuff that will do the job or make it. You can check this video out to see what I did to plug holes. ua-cam.com/video/f2Ca8Lv1xRg/v-deo.html

    • @paulkelly4900
      @paulkelly4900 3 дні тому

      @ cheers Dale

  • @VintageGearMan
    @VintageGearMan 5 днів тому

    This has been massively helpful. Thanks!

  • @whs386
    @whs386 5 днів тому

    Great vids! Can you just bolt on a 175 cylinder piston and head to a stock 125 bottom end? Think the electric start from the 125 would turn over the 175 top end?

    • @montana2strokeracer
      @montana2strokeracer 3 дні тому

      Yes you can, electric start will probably not cut the mustard.

    • @whs386
      @whs386 2 дні тому

      Thanks Dale, you’re an incredible resource

  • @VintageGearMan
    @VintageGearMan 5 днів тому

    Huge thank you on this oil pump! My bike bring back will be over time but this will be my very first and foremost scenario checkout no doubt! Sure, I could pre-mix gas but that is no fun at all and just a hassle. Thanks a bunch!

  • @VintageGearMan
    @VintageGearMan 5 днів тому

    Cool on lathe. I can easily do the same on my German Unimat lathe.

  • @VintageGearMan
    @VintageGearMan 5 днів тому

    Thank God for this video because I am scared to death my pump is not working correctly and I am in the process of ordering a new piston, rings, gaskets, clutch plates etc for a 1970 Yamaha 125 AT1E,,, I have had since I was 16 years old. The bike is in still great shape. I am 62 now. I am the second owner only of this bike. It had maybe 400 miles on her when my dad bought it for me. It has 4000 on it now but the last time it ran would have been about 1997 for a brief time.

    • @montana2strokeracer
      @montana2strokeracer 5 днів тому

      Those pumps are very reliable, I have worked on them for over 45 years and only seen one go bad and that was because the owner forgot to put oil in the tank and ran it dry. This will verify whether it is or not. If everything is good be sure to go back and adjust your throttle and oil cables and then check the adjustment on the pump. Right in the front of the service manual.

    • @VintageGearMan
      @VintageGearMan 5 днів тому

      @@montana2strokeracer Wonderful to know. I have misplaced my original owners manual. Do you happen to know what the points gap should be on my 1970 125 AT1E? I also do not remember what size the original main jet is supposed to be in the carb. I think I went a a bit bigger years ago so I do not know if that will cause a running issue or not. Years ago I took my cylinder to Yamaha to be bored out and they gave me the wrong piston. It was a shorter length so apparently it through the port timing off,, then life happened and I never did get the correct piston back in it.

  • @garyh4458
    @garyh4458 6 днів тому

    This guy sounds like Hank Hill.

    • @montana2strokeracer
      @montana2strokeracer 5 днів тому

      Ok....don't know who Hank is.

    • @garyh4458
      @garyh4458 5 днів тому

      @@montana2strokeracer You don't know who Hank Hill is and you are watching a UA-cam video involving man stuff?

  • @davekeehn8388
    @davekeehn8388 6 днів тому

    Merry Christmas Dale. All the best.

  • @peytonmaterne2970
    @peytonmaterne2970 6 днів тому

    Thank you, my recent purchase rt3 had the float arm with tang pointing toward float bowl. I will change it to point toward carb body but still unsure its purpose.

    • @montana2strokeracer
      @montana2strokeracer 5 днів тому

      Peyton, it keeps it from falling too far down into the float bowl.

    • @peytonmaterne2970
      @peytonmaterne2970 5 днів тому

      Ok thanks, I'll study it next time I'm in the garage.

  • @jamesws3
    @jamesws3 6 днів тому

    Merry Christmas, Dale!! Great video for something many of us have often wondered. Thanks!

    • @montana2strokeracer
      @montana2strokeracer 5 днів тому

      Merry Christmas Jim, you got to make one for your shop. Worth their weight in gold when you need it.

  • @MrDogtown22
    @MrDogtown22 7 днів тому

    Like an underlying knocking sound. Same problem with my CR80. If you rock the crankshaft on the drive side whilst holding the flywheel you can feel it all sligthly rocking. And if you look closely you can see the inner bearing race moving

    • @montana2strokeracer
      @montana2strokeracer 5 днів тому

      Sounds like you have it diagnosis correctly to me. Pretty unmistakable. Good luck with your repair. Its not too bad a job.

    • @MrDogtown22
      @MrDogtown22 5 днів тому

      @montana2strokeracer Yeah, it slightly moves in a circular motion, I believe it's called Radial movement. There's no in/out movement but up/down and side to side. This also causes the crank seal not to seal correctly and gearbox oil gets into the cylinder, and you end up with a big milky mess of oil in the exhaust.

  • @gregslair4278
    @gregslair4278 8 днів тому

    Merry Christmas Mr Thrifty 🤣. Love the stuff you do.

  • @CK-Cycles
    @CK-Cycles 8 днів тому

    Nice work Dale. Merry Christmas! Where did you get your 1/4" handled bit driver? Is it a Craftsman? Nice tool.

    • @montana2strokeracer
      @montana2strokeracer 5 днів тому

      Hi Chris, thank you very much, Merry Christmas to you folks too. I have had it probably 40 years, it is a Proto 4769 and its still made, I found one on eBay about a year ago.

  • @stevehopkinson4871
    @stevehopkinson4871 8 днів тому

    Just stumbled on your channel very interesting I’ve subscribed happy Christmas

    • @montana2strokeracer
      @montana2strokeracer 5 днів тому

      Thanks Steve, I sure appreciate the sub and hope to see you back every week to see what I have going on in the shop. Merry Christmas.

  • @nickamb4236
    @nickamb4236 8 днів тому

    Your other video on doing the test taught me a lot. I never could quite process it until I saw it done. Thanks and Merry Christmas!