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Old 01-25-2017, 11:13 PM   #21
Coleydog
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Default Re: piston rings?

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Originally Posted by Mike Miljanovic View Post
Trying to get back in Stock after a 15 year lay-off (shifter-kart/stock car racing with my son), so I am a little out of date. I used to use discarded standard bore oil spacers with .030 over rails, giving 8-9 lbs vertical pull(wet), with no smoke. On LS6's, using deck plates did not make a difference on the pull. Is that still acceptable today?
Also, has anyone tried installing empty heads & hand-honing from the bottom with the block upside down? I experimented with that once long ago & ended up smashing my hone (gave up!).
What is the current upper ring combo today, or is that a big secret? Last time, I used a Dykes upper ring with a back-cut 2nd backed up with a spacer.
Thanks for any help.
Funny you should mention honing with the head on. I've contemplated taking a hole saw to a junk head, cutting all four holes right through the head. To me this would be better than a hone plate
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Old 01-26-2017, 01:44 AM   #22
carl hinkson
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Default Re: piston rings?

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Originally Posted by older racer View Post
I find you have to use a napier second ring with lower tension oil rings. you can run 6 # oils with napier and engine will run dry. without vac pan setup. breathers only. been using this in small block mopars last number of years. wall finish can impact results also.

DING DING DING We have a winner.

Some of the Mahle pistons I have been using have a 1MM 1MM 2 MM ring pack with very low tension ring pack, So far all my engines seem to like this ring pack.
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Old 01-26-2017, 10:16 AM   #23
Jeff Stout
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Default Re: piston rings?

Any knowledge of ET differences from all the different oil ring tensions. Also I just Had Carl Hinkson prep my new Dart Little M block and the fit and finish was spot on perfect. Thank you Carl
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Old 01-26-2017, 11:24 AM   #24
randy wilson
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Default Re: piston rings?

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Originally Posted by Larry Hill View Post
What is the correct procedure to check drag from the ring package? Cylinder vertical or horizontal, dry cylinder wall or lubrication on the wall, if lubricated with what and how much, just piston with pin and oil ring or is the rod on it too. Is it the breakaway number or the dynamic pull reading?
Dynamic pull reading what I use. And I leave the rod on, and put a Zip tie around the big end of the rod, and hook the fish scale to that.
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Old 01-26-2017, 11:28 AM   #25
randy wilson
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Default Re: piston rings?

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Originally Posted by high winder View Post
How do you remove the tension on your oil ring ?
The old style rings we used to crimp with needle nose pliers till we got the desired amount of tension. I've also ran a smaller bore expander then the actual bore. Others may have better ideas, but I was happy with my results.
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Old 01-26-2017, 11:31 AM   #26
randy wilson
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Default Re: piston rings?

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Originally Posted by carl hinkson View Post
One thing that is over looked using a fish scale was the block plate honed or was the scale test done on cylinders that were not plate honed ??

If the block was not plate honed once the heads are installed not its a whole different ball game as you dealing distorted cylinders ( Not Round cylinders )

I plate hone all my blocks which is more important with OEM blocks as they are pretty frail.

Do a search on Torque plate honing.

I have seen circle track engines that were not plate honed and even after 2 or 3 years running still no ring seal and poor leak down numbers.

Ring can never break in when cylinders are not round.

Fish scale tests depends on cylinder finish.
I use a torque plate to test ring tension.
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Old 01-26-2017, 01:00 PM   #27
carl hinkson
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Default Re: piston rings?

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Originally Posted by Jeff Stout View Post
Any knowledge of ET differences from all the different oil ring tensions. Also I just Had Carl Hinkson prep my new Dart Little M block and the fit and finish was spot on perfect. Thank you Carl

Thank you !
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Old 01-26-2017, 01:02 PM   #28
carl hinkson
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Default Re: piston rings?

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Originally Posted by randy wilson View Post
I use a torque plate to test ring tension.

What are you using for a hone and what finish do you use ?
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Old 01-26-2017, 08:33 PM   #29
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Default Re: piston rings?

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What are you using for a hone and what finish do you use ?
Beats me. Al Parker does the honing, and I just trust him for the ring package. Never been wrong so far. I still check the tension. We had one 0.060 over 283 that literally was air tank tight. Zero leak down on 8 cylinders. Zero, nada, zilch, nothing.
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Old 01-26-2017, 10:08 PM   #30
carl hinkson
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Default Re: piston rings?

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Originally Posted by randy wilson View Post
Beats me. Al Parker does the honing, and I just trust him for the ring package. Never been wrong so far. I still check the tension. We had one 0.060 over 283 that literally was air tank tight. Zero leak down on 8 cylinders. Zero, nada, zilch, nothing.
Interesting !!! I know of Al Parker does some nice sprint car engines.
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