Oil Passing By Rings

RICK W · 11-24-2007, 11:49 AM

350 Chev Ss With Venolia .060 Pistons. Have Used The R-9941 Ring Set For Years. Now Oil Is Going By The Rings Big Time. The Set Is .065 Over, File The Top Ring To Fit Cylinder And Install Oil Ring. The Piston Will Fit In The Bore With The Oil Ring On It Without A Ring Compressor. I Have Two Blocks, Measured The Cylinders Which Are Ok. Any Comments-thanks

Dick Butler · 11-24-2007, 12:10 PM

Piston Groove height may have opened up? or depth? be sure ring measures what older one did. Maybe slight machining problem?

Dave Goob Cook · 11-24-2007, 01:06 PM

Sounds like the wrong oil rings got thrown into the package.

RICK W · 11-24-2007, 01:07 PM

This Is With A Piston That Has Not Been Run Yet. Seems To Be A Change In The Ring.

RICK W · 11-25-2007, 10:15 AM

Any One Have Any Ring Kit Part Numbers For The 350ss .060 Piston With .031 Dykes Ring? Thanks

Rich Biebel · 11-25-2007, 12:49 PM

Dykes rings are not packaged in full sets from Speed Pro if I rememebr right. We always bought them seperately as an open stock top ring. The oil ring issue sounds like you have the wrong expanders or rails. You can buy rings from other suppliers that will package exactly what you want and they offer some different designs, like a Hastings syle oil ring expander. Total Seal or possibly J.E.

Alan Roehrich · 11-25-2007, 01:14 PM

Correct. If you want a Speed Pro Dykes ring set, you have to "build" it from "open stock" rings.

Total Seal will make most anything you want, but Keith Jones (the guy I work with at Total Seal) is not a fan of Dykes rings. Keith will likely advise you to go metric with spacers, and put a custom low tension Speed Pro SS-50U series oil ring together. But he WILL do a Dykes setup if that's what you want.

RICK W · 11-25-2007, 02:49 PM

Thanks Guys

Mike Pearson · 11-26-2007, 10:37 PM

Rick,

You should have 15 lbs of drag on the piston with the oil rings installed. If you can install the piston without a ring compressor you have the wrong rings. Install the piston in the bore up side down and attach a fish scale to the large end of the rod and pull the assembly up the bore and read the resistance in pounds. You should have about 15 to 18 lbs. Anything less and you will get oil past the rings. Once you find a good set of expanders keep them and only replace the rails on the oil ring when you are freshening your engine

Mike

RICK W · 11-27-2007, 12:39 PM

Thanks For The Info Mike

11-24-2007, 11:49 AM	#1
RICK W Junior Member Join Date: Jun 2007 Posts: 64 Likes: 0 Liked 0 Times in 0 Posts	Oil Passing By Rings 350 Chev Ss With Venolia .060 Pistons. Have Used The R-9941 Ring Set For Years. Now Oil Is Going By The Rings Big Time. The Set Is .065 Over, File The Top Ring To Fit Cylinder And Install Oil Ring. The Piston Will Fit In The Bore With The Oil Ring On It Without A Ring Compressor. I Have Two Blocks, Measured The Cylinders Which Are Ok. Any Comments-thanks

11-24-2007, 12:10 PM	#2
Dick Butler VIP Member Join Date: Oct 2002 Location: Richmond Indiana Posts: 1,196 Likes: 5 Liked 32 Times in 19 Posts	Re: Oil Passing By Rings Piston Groove height may have opened up? or depth? be sure ring measures what older one did. Maybe slight machining problem?

11-24-2007, 01:06 PM	#3
Dave Goob Cook Member Join Date: Dec 2006 Location: Indy Posts: 422 Likes: 0 Liked 0 Times in 0 Posts	Re: Oil Passing By Rings Sounds like the wrong oil rings got thrown into the package.

11-24-2007, 01:07 PM	#4
RICK W Junior Member Join Date: Jun 2007 Posts: 64 Likes: 0 Liked 0 Times in 0 Posts	Re: Oil Passing By Rings This Is With A Piston That Has Not Been Run Yet. Seems To Be A Change In The Ring.

11-25-2007, 10:15 AM	#5
RICK W Junior Member Join Date: Jun 2007 Posts: 64 Likes: 0 Liked 0 Times in 0 Posts	Re: Oil Passing By Rings Any One Have Any Ring Kit Part Numbers For The 350ss .060 Piston With .031 Dykes Ring? Thanks

11-25-2007, 12:49 PM	#6
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,312 Likes: 25 Liked 543 Times in 212 Posts	Re: Oil Passing By Rings Dykes rings are not packaged in full sets from Speed Pro if I rememebr right. We always bought them seperately as an open stock top ring. The oil ring issue sounds like you have the wrong expanders or rails. You can buy rings from other suppliers that will package exactly what you want and they offer some different designs, like a Hastings syle oil ring expander. Total Seal or possibly J.E. __________________ Rich Biebel S/C 1479 Stock 147R

11-25-2007, 01:14 PM	#7
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,066 Likes: 1,487 Liked 1,630 Times in 378 Posts	Re: Oil Passing By Rings Correct. If you want a Speed Pro Dykes ring set, you have to "build" it from "open stock" rings. Total Seal will make most anything you want, but Keith Jones (the guy I work with at Total Seal) is not a fan of Dykes rings. Keith will likely advise you to go metric with spacers, and put a custom low tension Speed Pro SS-50U series oil ring together. But he WILL do a Dykes setup if that's what you want. __________________ Alan Roehrich 212A G/S

11-25-2007, 02:49 PM	#8
RICK W Junior Member Join Date: Jun 2007 Posts: 64 Likes: 0 Liked 0 Times in 0 Posts	Re: Oil Passing By Rings Thanks Guys

11-26-2007, 10:37 PM	#9
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,417 Likes: 597 Liked 1,880 Times in 562 Posts	Re: Oil Passing By Rings Rick, You should have 15 lbs of drag on the piston with the oil rings installed. If you can install the piston without a ring compressor you have the wrong rings. Install the piston in the bore up side down and attach a fish scale to the large end of the rod and pull the assembly up the bore and read the resistance in pounds. You should have about 15 to 18 lbs. Anything less and you will get oil past the rings. Once you find a good set of expanders keep them and only replace the rails on the oil ring when you are freshening your engine Mike __________________ Mike Pearson 2485 SS

11-27-2007, 12:39 PM	#10
RICK W Junior Member Join Date: Jun 2007 Posts: 64 Likes: 0 Liked 0 Times in 0 Posts	Re: Oil Passing By Rings Thanks For The Info Mike