Oil control ring questions - Competition Diesel.Com

SCHMITTY · 07-10-2019, 10:30 AM

I started grinding my ring gaps but noticed the spring in the oil control ring doesn’t want to compress at all by hand. They are Mahle .020 pistons stock bowl, chrome top ring.

Do you guys ever trim the spring that holds the oil control ring ?

Rich dzl · 07-10-2019, 11:15 AM

I Never seen it trimmed ,if rings are for your bore spec

joefarmer · 07-10-2019, 11:28 AM

I've not seen the spring trimmed. Even when I had to use +040 rings in a +020 bore I did not need to trim the spring.

SCHMITTY · 07-10-2019, 02:06 PM

I called Mahle. The guy said that I shouldn’t be able to compress the oil ring by hand. He was telling me to run the middle ring with a wider gap than the top ring though.

What would you guys recommend for gaps ? The book I’m using is for a military crane truck with a p pump 12 valve. It says .016-.028” top ring, .010-.022 middle and bottom ring.

I also read somewhere to add .003” gap per .01” over bore

Just a stockish build for an older power wagon , 5x12s , 215 pump, ats 3000

SCHMITTY · 07-10-2019, 07:08 PM

Piston to wall is .005

Cflanery88 · 07-10-2019, 08:17 PM

I didn’t shave mine when I put .020 rings in my standard bore

07-10-2019, 10:30 AM	#1
SCHMITTY Name: SCHMITTY Title: Not enough time Status: Not Here Join Date: Jun 2012 Location: K beach, AK Member`s Gallery Posts: 1,183	Oil control ring questions I started grinding my ring gaps but noticed the spring in the oil control ring doesn’t want to compress at all by hand. They are Mahle .020 pistons stock bowl, chrome top ring. Do you guys ever trim the spring that holds the oil control ring ? __________________ stock 94

07-10-2019, 11:28 AM	#3
joefarmer Name: joefarmer Title: MR. Supreme Overlord Status: Not Here Join Date: Jul 2006 Location: ohio Member`s Gallery Posts: 6,137	I've not seen the spring trimmed. Even when I had to use +040 rings in a +020 bore I did not need to trim the spring. __________________ brandon'); DROP TABLE Users;-- 1948 Dodge 1.5t 12v RH swap \| 99 F250 12v RE test rkt \| 11 X5 'no soup' \| 08 F250 CR RE swap \| 05 2500 CR 68 standalone firepunk.com

07-10-2019, 02:06 PM	#4
SCHMITTY Name: SCHMITTY Title: Not enough time Status: Not Here Join Date: Jun 2012 Location: K beach, AK Member`s Gallery Posts: 1,183	I called Mahle. The guy said that I shouldn’t be able to compress the oil ring by hand. He was telling me to run the middle ring with a wider gap than the top ring though. What would you guys recommend for gaps ? The book I’m using is for a military crane truck with a p pump 12 valve. It says .016-.028” top ring, .010-.022 middle and bottom ring. I also read somewhere to add .003” gap per .01” over bore Just a stockish build for an older power wagon , 5x12s , 215 pump, ats 3000 __________________ stock 94

07-10-2019, 07:08 PM	#5
SCHMITTY Name: SCHMITTY Title: Not enough time Status: Not Here Join Date: Jun 2012 Location: K beach, AK Member`s Gallery Posts: 1,183	Piston to wall is .005 __________________ stock 94

07-10-2019, 08:17 PM	#6
Cflanery88 Name: Cflanery88 Title: Too Much Time Status: Not Here Join Date: Feb 2016 Location: Shelby, MI 49455 Member`s Gallery Posts: 536	I didn’t shave mine when I put .020 rings in my standard bore __________________ 06 Dodge Ram 2500 6.4L, Wagler +.080 rods, Hobbit tuned, Exergy150% injectors,Polished s475/87 1:0 A/R Engineered Turbo Billet Wheel,arp625s,14mm main studs,PPE dual fuelers,Hamilton 188/220,extreme pushrods,Fleece bypass/drains/distribution block,110#springs.

07-10-2019, 11:15 AM	#2
Rich dzl Name: Rich dzl Title: 12v guru Status: Not Here Join Date: Mar 2011 Member`s Gallery Posts: 741	I Never seen it trimmed ,if rings are for your bore spec