Oil Expander Ends - Positon/Phasing on Piston Important? - Page 2

Tom keedle · 08-16-2011, 04:45 AM

just throwin' this out there, way back when i re-rung a 400 IT yamaha and it had pins in the ring lands to keep the rings where ya put 'em....

Ed Wright · 08-16-2011, 07:52 AM

Didn't want to snag a port in the cylinder wall with the end of a ring, right?

Ed Wright · 08-16-2011, 07:56 AM

Quote:

Originally Posted by Adger Smith

GM spent millions trying to figure that one out. Remember the problems with 307 and 396 oil useage? Ring placement and rotation speed during break in was part of the problem. Some engines rotate the rings at a real slow rate, others faster. The method of placement GM found is now put in every Mahle/CP/Clevite ring box on a little green piece of paper. I could get Real Technical, but for time sake... Just use their little paper. It works.

I've never bought a set of those rings. Total Seal doesn't send that paper. :-)
It tells you how to stop them from moving? I'd like to see that. Do you know if it can be found on line?

CraigG · 08-16-2011, 09:14 PM

Hey Guys,

Thanks for all your help!

It has been 10 years since I could save the money to build this motor.

Sorry - I have been working to use the best practice techniques I can and to check everything - but I have to be careful Not to get too ANAL or it will never get put together! LOL!

Thanks Again, Craig

Adger Smith · 08-17-2011, 12:22 AM

Ed, They all move (rotate) except the ones that are pinned in place. The trick is to locate the rings where they will not rotate past one another during the early stages of break in. GM spent big bucks figuring out that problem. When they line up during break in it is a form of "hyd. lock". Where one ring won't rotate through the small oil path left by the other ring. After break in they will rotate past one another because the oil line, at the end gap, is reduced to nearly nothing. I'll try to scan the piece of paper with the placement in tomorrow night. I think there is something similar in the How to Hot Rod BB Chevies publication.

Ed Wright · 08-17-2011, 08:15 AM

Thanks Adger.

Ron Gusack · 08-17-2011, 05:36 PM

From How to Hot Rod a Big Block
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08-16-2011, 04:45 AM	#11
Tom keedle Senior Member Join Date: Dec 2008 Location: Berthoud, Coloraduh Posts: 695 Likes: 13 Liked 8 Times in 7 Posts	Re: Oil Expander Ends - Positon/Phasing on Piston Important? just throwin' this out there, way back when i re-rung a 400 IT yamaha and it had pins in the ring lands to keep the rings where ya put 'em....

08-16-2011, 07:52 AM	#12
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Oil Expander Ends - Positon/Phasing on Piston Important? Didn't want to snag a port in the cylinder wall with the end of a ring, right? __________________ Ed Wright 4156 SS/JA

08-16-2011, 09:14 PM	#14
CraigG Junior Member Join Date: May 2007 Location: Iowa Posts: 37 Likes: 0 Liked 8 Times in 7 Posts	Re: Oil Expander Ends - Positon/Phasing on Piston Important? Hey Guys, Thanks for all your help! It has been 10 years since I could save the money to build this motor. Sorry - I have been working to use the best practice techniques I can and to check everything - but I have to be careful Not to get too ANAL or it will never get put together! LOL! Thanks Again, Craig

08-17-2011, 12:22 AM	#15
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Oil Expander Ends - Positon/Phasing on Piston Important? Ed, They all move (rotate) except the ones that are pinned in place. The trick is to locate the rings where they will not rotate past one another during the early stages of break in. GM spent big bucks figuring out that problem. When they line up during break in it is a form of "hyd. lock". Where one ring won't rotate through the small oil path left by the other ring. After break in they will rotate past one another because the oil line, at the end gap, is reduced to nearly nothing. I'll try to scan the piece of paper with the placement in tomorrow night. I think there is something similar in the How to Hot Rod BB Chevies publication. __________________ Adger Smith (Former SS)

08-17-2011, 08:15 AM	#16
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Oil Expander Ends - Positon/Phasing on Piston Important? Thanks Adger. __________________ Ed Wright 4156 SS/JA

08-17-2011, 05:36 PM	#17
Ron Gusack Member Join Date: Feb 2009 Posts: 244 Likes: 1 Liked 7 Times in 6 Posts	Re: Oil Expander Ends - Positon/Phasing on Piston Important? From How to Hot Rod a Big Block [IMG][/IMG]