Hastings rings for my cast iron pistions

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Model T Ford Forum: Forum 2012: Hastings rings for my cast iron pistions
Top of pagePrevious messageNext messageBottom of page Link to this message  By Gary Melton on Monday, May 21, 2012 - 09:22 pm:

The instructions clearly state to make sure the dot is installed up. What isn't so clear is which of the two compression rings goes on the top? One has the bevel up and the other has the bevel down? Thanks for any help or insight. Gary


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kerry van Ekeren (Australia) on Monday, May 21, 2012 - 10:36 pm:

As a rule, rings with an inside bevel face up and the rings with a out side bevel face down, the inside one would be a top ring and the out side bevel is the second ring.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Gary Melton on Monday, May 21, 2012 - 11:11 pm:

Kerry, thanks so much for replying. Sorry I wasn't too clear, both bevels are on the inside. One bevel faces the dot and the other bevel faces away from the dot. The one with the bevel facing the dot is more pronounced, the bevel,facing away from the dot, is much smaller. I attempted to take pictures without much success. Gary


Top of pagePrevious messageNext messageBottom of page Link to this message  By Gary Melton on Monday, May 21, 2012 - 11:23 pm:

This is my attempt at drawing the rings.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kerry van Ekeren (Australia) on Tuesday, May 22, 2012 - 01:03 am:

OK, your first drawing ring, dot and bevel is top ring, second ring dot to the top, with that type of second ring with a small bottom bevel should also be slightly shamford down to be thicker on the out bottom side,you may not see it by eye.


Top of pagePrevious messageNext messageBottom of page Link to this message  By James Michael Rogers on Tuesday, May 22, 2012 - 06:40 am:

If you look at the top or bottom tab on the box, it should have the rings and their position listed by the section of the box they are in.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Tuesday, May 22, 2012 - 11:49 am:

Look on the small end tabs of the box. Hastings likes to put the info there.


Top of pagePrevious messageNext messageBottom of page Link to this message  By John Cassara Long Island, NY on Tuesday, May 22, 2012 - 11:53 am:

The rings amy also be provided in pouches 1-2-3 per piston.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Roar Sand on Tuesday, May 22, 2012 - 12:16 pm:

The purpose of the I.D. chamfer is to induce "twist" in the ring when it is compressed as installed in the bore.
Roar


Top of pagePrevious messageNext messageBottom of page Link to this message  By Gary Melton on Tuesday, May 22, 2012 - 12:23 pm:

Thanks so much for the help! I now see the tabs mentioned above, but of course, I have removed them from the box. Well now I know what to do. Model T drivers are the best!


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Tuesday, May 22, 2012 - 09:02 pm:

I have run into this 2 times, remembered to look at the tab after pulling the first set of rings out of the box the 2ed time. I wish they would print the slot number on the wrapper or inside of the tab.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Roar Sand on Thursday, May 24, 2012 - 01:09 pm:

Gary,
In your drawing the "A" should be your top ring
The chamfer, or removed metal, at the top ID corner causes the ring to twist when compressed because there is less metal at the top to resist the compression. That twists the ring so that the lower OD edge bears harder against the cylinder wall than the top. This will facilitate the ring "surfboarding" on the oil on the cylinder wall when moving up, and it will help "scrape" the oil off the cylinder wall when descending.
Roar


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