1972 Norton Commando Combat Rebuild (15) - Fitting piston rings

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In this video, Dave is fitting the piston rings to the pistons and then inserting the pistons into the barrel. We use an alternative approach to fitting the pistons, but it works really well.
Thanks a lot to Jim Comstock for his terrific videos. As you will see from his videos below, Jim makes it look a wee bit easier than Dave and my efforts!
Jim fitting the pistons into the barrel:
• Norton piston and barr...
Jim cutting sections of the piston expander ring to reduce friction in the bore:
• oil ring
Here’s a link to the Playlist for this project, which also contains videos that Dave has made with some of the interim steps:
• Feature | 1972 Norton ...
Here's a link to Dave's RU-vid channel where you will find his other videos on this project as well as other interesting videos:
/ @swooshdave
Here's a link to the AccessNorton forum thread on Dave's rebuild:
www.accessnorton.com/NortonCo...
Theme Music: CRASH by Ikson
@iksonofficia
/ ikson
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2 авг 2019

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Комментарии : 22

@mitchburk5112 5 лет назад

Did you check the ring gaps? I've found that the gap often needs to be opened up a bit on factory fresh rings. Push them into the barrel with a piston and measure gap with a feeler gauge. Better a smidge more gap than too tight. I only use the ring expander on the compression rings, just spiral the scraper rings on. I do Jim's method but use a ring compressor. Easy peasy.

@andovernorton-thesource Год назад

You did a great job getting the rings on there 👌

@johnb5519 5 лет назад

Can't wait to here it roar to life again. My buddies used to call my bike the snort'n Norton. I never liked using a ring expander, and always do it the old fashion way. It always seemed like they were on the verge of snapping.

@swooshdave 5 лет назад

John B They actually expanded just fine. But there was some puckering occurring. Apparently the danger of winding them on is scratching the piston.

@johnb5519 5 лет назад

Yes, you are probably right about that. You guy's are doing a great job there.

@TheDavey333 5 лет назад

Piston rings can be a pain, looks like you got it sussed. Can’t wait for the next part 👍

@tadpoles10 5 лет назад

Sometimes those pesky blue gloves just get in the way, well done Dave. atvb t ..

@gremmann 4 года назад

Yeah..unless you're a concert violinist or hairdresser you might want to ditch the gloves. I've tried them, get a better feel without, especially doing this.

@supercomp7078 2 года назад

You know the guys who had done that and had shit fly away, they were the ones yelling at the tv to put your thumb over the clip to stop it flying away

@TheMightyGarage 2 года назад

😄

@sf940477 5 лет назад

I agree with tadpole throw those gloves away ha ha . Well done 👍

@nicksmith633 5 лет назад

Hi I would have checked the ring gaps before fitting them , if they are too tight it’s not worth the risk. I think you allow 3 to 4 thou per inch of bore dia if my memory is correct . The gaps on the pistons ideally should be 120 degrees apart and not on the thrust side of The piston ie right at the front , hope this is of use to somebody.

@swooshdave 5 лет назад

nick smith No, I did not check the ring gap. Probably should have. I asked about where to put the gaps, if you watched Jim’s video he mentions that the rings rotate on their own so it doesn’t make a big difference.

@motorcyclegarage2307 5 лет назад

Good to see the Isle Of Man legs flag !

@swooshdave 5 лет назад

MOTORCYCLE GARAGE Even if it’s backwards!

@Frightningman 5 лет назад

Somewhat surprised that you didn't know how to fit those oil control rings.

@swooshdave 5 лет назад

Frank Todd It’s been years since I rebuilt an engine. And this was the first Norton. Keep in mind I’m showing people how to do things the wrong way so if you don’t know you can follow along and learn the right way to do it. We could have edited it all out but then no one learns. These videos aren’t for the people who have done it a million times rather to show that someone with a modicum of experience can do it. I hope that makes sense. If you thought I was an expert then we did something wrong. 😜

@p.h.983 2 года назад

@@swooshdave This is brilliant ! It is giving me the confidence to tackle my first engine rebuild ... on my late fathers 1954 Dominator (not started and off the road since 1963) Slightly different I know but great to see all the engine internals in real time :)

@swooshdave 2 года назад

@@p.h.983 The engines are basically the same and all of the techniques will be similar. If I can do it then anyone can!