"help"

[Mike Mayer]

I can't remember if the cylinders have to be beveled after boring . I found a problem with my new Hastings rings the third ring is a three part ring . some of the thin rings were bent . I am sure it was on instillation. should I bevel the top edges of my cylinders?

[KiWinUS]

Yes

[Mike Mayer]

Thank you

[flatrod]

There should be some chamfer there, but no a lot. I would suggest a better ring compressor if you bent the scraper rings over.

[rotorwrench]

The three piece oil control ring systems do require a very good ring compressor. It takes a good bit of force to compress them. Make sure they fit the ring groove on the pistons you have. If they don't fit then you will either have to use different rings or pistons that will work with the rings you have. I like Hastings rings but any quality cast iron ring will work.

Wrinkle band ring compressors work well since they don't grip the piston rings as hard. This can make it easier to get the pistons in. The link will show a wrinkle type compressor set up.
https://regismanufacturing.com/wrink...SABEgKNQPD_BwE
Here is another:
https://www.amazon.com/Lisle-21700-W...a-568793595106

[Mike Mayer]

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thank you all I will now be able to get the job done correctly .

[KiWinUS]

Mike when you are ready to install pistons.Be cure to check all ring gaps in cylinders using a piston to square them in bore. Check all the steel rails of oil rings also. Remember rubber fuel line on rod bolts. Pay attention to order of all components to include clocking of rings.
Once you have piston with rings on in cylinders ready to push into bore. Use a medium sized hammer with long handle. Handle end against piston holding pressure against piston. DO NOT HIT PISTON WITH HAMMER HANDLE. Holding hammer use palm of your hand on hammer head to push piston hitting with palm. Keep handle touching piston at all times until piston is in bore & push home to Moma. Should a ring catch you will feel it through you hand holding hammer. It’s really easy & issue free once you get the hang of it. Good luck.
Cheers
Tony

[Aarongriffey]

I hate it when the machinist bevels the top of the cylinder.
When I have a block bored I tell them not to do that.
It makes it reall y hard to get the rings past the taper without the ring compressor getting stuck down in the bevel.

[Mike Mayer]

thank you all I am ready to go .

[rotorwrench]

Originally Posted by Aarongriffey

I hate it when the machinist bevels the top of the cylinder.
When I have a block bored I tell them not to do that.
It makes it reall y hard to get the rings past the taper without the ring compressor getting stuck down in the bevel.

That's another reason to use the wrinkle type compressor. It has a wider profile due to the wrinkles so it won't try to wedge down into any taper that might be there.