|
01-25-2017, 04:08 PM | #11 |
Junior Member
Join Date: Nov 2002
Location: usa
Posts: 14
Likes: 0
Liked 0 Times in 0 Posts
|
Re: piston rings?
How do you remove the tension on your oil ring ?
|
01-25-2017, 04:34 PM | #12 |
VIP Member
Join Date: Mar 2007
Posts: 2,320
Likes: 546
Liked 1,629 Times in 502 Posts
|
Re: piston rings?
Total Seal can sell you oil rings in several different tensions. To fine tune the tension you bend the end of the expander to either tighten of loosen the tension
__________________
Mike Pearson 2485 SS |
01-25-2017, 05:16 PM | #13 |
VIP Member
Join Date: Nov 2001
Location: Florida
Posts: 1,538
Likes: 34
Liked 132 Times in 48 Posts
|
Re: piston rings?
For reference for the OP, I found "standard" tension rings to be in the 18-24lb range.
I've also used the fish scale gauge to check the drag of the oil ring using the "dynamic" method. Like most gauges, weather stations, etc., the calibration will vary, plus other factors. So I use the same one for my comparisons. "Your results may vary."
__________________
LOCOMOTION Racing |
01-25-2017, 05:31 PM | #14 |
Veteran Member
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 8,132
Likes: 896
Liked 389 Times in 168 Posts
|
Re: piston rings?
I may do it wrong, but I use a fish scale, hooked to a zip tie around the rod cap, oil the cylinder wall, turn the block so the cylinder tested is level, parallel with the floor. Put the piston in upside down (rod toward me), with only the oil ring on it. Pull it with the fish scale. I do it a couple of times to make sure it repeats. Steady pull. My backwoods Okie method. Gotten by with it for over 50 years. There are likey better ways to do it.
A rep for Speed Pro told me many years ago that their "low tension" oil rings simply had expanders for a.030" smaller bore. May not be that way now. That was probably 20 years ago. I can tell you .060" smaller expanders pumped oil & smoked in my old '56 Chevy Jr Stocker. LOL
__________________
Ed Wright 4156 SS/JA |
01-25-2017, 06:24 PM | #15 |
Live Reporter
Join Date: Oct 2004
Location: Hickory, Ky
Posts: 10,277
Likes: 1,635
Liked 9,453 Times in 1,956 Posts
|
Re: piston rings?
Thanks Mr. Ed.
|
01-25-2017, 06:44 PM | #16 |
Member
Join Date: Feb 2007
Location: NORTHEAST
Posts: 287
Likes: 1
Liked 18 Times in 10 Posts
|
Re: piston rings?
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. |
01-25-2017, 06:45 PM | #17 |
Member
Join Date: Nov 2016
Posts: 194
Likes: 47
Liked 68 Times in 22 Posts
|
Re: piston rings?
keith at total seal said he had 3 packages. 5lb,11lb, and 13 pound. for the 4mm oil ring that lt1s have to run i might have to go with the 11lb ones. any thoughts anyone?
|
01-25-2017, 07:58 PM | #18 |
VIP Member
Join Date: Nov 2001
Location: Florida
Posts: 1,538
Likes: 34
Liked 132 Times in 48 Posts
|
Re: piston rings?
With my limited experience, I believe that anything much lower than 11 lbs would probably work better with vac-u-pan system or vacuum pump, which aren't legal for Stock. As mentioned earlier, ring seal and life is influenced by the precision of machine work and maintaining round cylinders.
__________________
LOCOMOTION Racing |
01-25-2017, 09:33 PM | #19 |
Junior Member
Join Date: Jan 2006
Location: Ancaster ON Canada
Posts: 12
Likes: 3
Liked 5 Times in 5 Posts
|
Re: piston rings?
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. |
01-25-2017, 09:52 PM | #20 | |
Member
Join Date: Aug 2010
Posts: 204
Likes: 2
Liked 57 Times in 23 Posts
|
Re: piston rings?
Quote:
|
|
|
|