LS1TECH - Camaro and Firebird Forum Discussion

Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Piston Ring Compressor for a 6.0L ?s.

Thread Tools
 
Search this Thread
 
Old Jul 21, 2017 | 09:02 PM
Share
  #1  
Stampede4ever's Avatar
Stampede4ever
Thread Starter
TECH Fanatic
20 Year Member
Photogenic
Photoriffic
 
Joined: Dec 2005
Posts: 1,414
Likes: 28
Default Piston Ring Compressor for a 6.0L ?s.
I'm working on LQ4, and I need to know what the Piston Ring Compressor inside diameter is?

Thanks.
Reply
0
Old Jul 21, 2017 | 09:10 PM
Share
  #2  
07NBSChevy's Avatar
07NBSChevy
TECH Enthusiast
iTrader: (1)
 
Joined: Apr 2013
Posts: 607
Likes: 7
From: Las Vegas, Nevada
Default
That will depend on the Brand and Type of Piston Ring Compressor you are using or going to use.

Metric
English

General

Engine Type
V8

Displacement
6.0L
364 CID

RPO
LQ4

VIN
U

Bore
101.618-101.636 mm
4.0007-4.0014 in


Cylinder Bore Diameter
101.618-101.636 mm
4.0007-4.0017 in

Cylinder Bore Taper - Thrust Side
0.018 mm
0.0007 in

Piston - Piston Diameter - Measured Over Skirt Coating
101.606-101.640 mm
4.0002-4.0016 in

Piston - Piston to Bore Clearance - Production ****************
0.022-0.03 mm - interference
0.0009-0.0012 in - interference
*************************
Piston - Piston to Bore Clearance - Service Limit with Skirt Coating Worn Off ************************************************** *******
0.07 mm
0.0028 in
*******
Reply
0
Old Jul 21, 2017 | 09:31 PM
Share
  #3  
Stampede4ever's Avatar
Stampede4ever
Thread Starter
TECH Fanatic
20 Year Member
Photogenic
Photoriffic
 
Joined: Dec 2005
Posts: 1,414
Likes: 28
Default
It's a 4.0" Bore, the piston diameter is 3.970" I think. My question is do I use one that is 4" inside diameter or one that is couple of thousandths over the piston diameter?

Thanks.
Reply
0
Old Jul 21, 2017 | 11:54 PM
Share
  #4  
07NBSChevy's Avatar
07NBSChevy
TECH Enthusiast
iTrader: (1)
 
Joined: Apr 2013
Posts: 607
Likes: 7
From: Las Vegas, Nevada
Default
Use one that is slightly smaller than the cylinder bore itself.
Reply
0
Old Jul 22, 2017 | 08:02 AM
Share
  #5  
KCS's Avatar
KCS
Moderator
20 Year Member
Liked
Loved
Community Favorite
iTrader: (20)
 
Joined: Mar 2005
Posts: 8,859
Likes: 323
From: Conroe, TX
Default
Originally Posted by Stampede4ever
It's a 4.0" Bore, the piston diameter is 3.970" I think. My question is do I use one that is 4" inside diameter or one that is couple of thousandths over the piston diameter?

Thanks.
The piston should be more like 3.996-3.999" depending on the manufacturer and material. Usually the piston ring compressors are designated for the bore size and will have a reduced ID to accommodate the piston.

This is the one I've used for 4" bore blocks.

https://m.summitracing.com/parts/sme-904000
Reply
0
Old Jul 22, 2017 | 08:58 AM
Share
  #6  
64post's Avatar
64post
TECH Fanatic
Photogenic
Liked
Loved
Community Favorite
iTrader: (5)
 
Joined: Nov 2011
Posts: 1,710
Likes: 228
From: Sonoma Co. Ca.
Default
One piece fixed diameter or one piece split adjustable, about $40 from Summit or Speedway, very easy to use. For the OP, 4.00 fixed or 4.00-4.070 split
Reply
0
Old Jul 22, 2017 | 09:03 AM
Share
  #7  
cookseyb's Avatar
cookseyb
TECH Resident
 
Joined: Apr 2010
Posts: 926
Likes: 18
From: Central Texas
Default
ARP, tell them what you got and they will provide the correct size 62 bucks but they are the best.
Reply
0

Trending Topics

Old Jul 23, 2017 | 06:43 PM
Share
  #8  
jayyk31's Avatar
jayyk31
Launching!
iTrader: (2)
 
Joined: Nov 2014
Posts: 207
Likes: 0
Default
I used the 1 piece ARP ring compressor for my 4.030 bore LQ4. They have them for the 4" bore as well.
Reply
0
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-1

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-2

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-3

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-4

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-5

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-6

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-7

10 Camaros You Should Never Buy

 
story-8

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
story-9

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

 Brett Foote
Old Jul 26, 2017 | 02:58 PM
Share
  #9  
LS1MCSS's Avatar
LS1MCSS
TECH Junkie
iTrader: (18)
 
Joined: Jan 2006
Posts: 3,831
Likes: 8
From: Dover, Arkansas
Default
Summit
Attached Thumbnails Piston Ring Compressor for a 6.0L ?s.-ring-compressor.jpg  
Reply
0
Old Aug 2, 2017 | 08:53 AM
Share
  #10  
Stampede4ever's Avatar
Stampede4ever
Thread Starter
TECH Fanatic
20 Year Member
Photogenic
Photoriffic
 
Joined: Dec 2005
Posts: 1,414
Likes: 28
Default
Is it tapered the whole length?

Thanks.
Reply
0
Old Aug 2, 2017 | 11:02 AM
Share
  #11  
BlwnLs1GTO's Avatar
BlwnLs1GTO
TECH Enthusiast
15 Year Member
Photogenic
iTrader: (12)
 
Joined: Mar 2006
Posts: 577
Likes: 8
Default
I believe the taper stops a little ways towards the bottom. But that will allow your piston to slide right into the cylinder with ease. I use the same product above.
I always make sure the machine shop tapers the top of each cylinder to help with this too.
Just buy it...
Reply
0
Old Aug 2, 2017 | 12:49 PM
Share
  #12  
cookseyb's Avatar
cookseyb
TECH Resident
 
Joined: Apr 2010
Posts: 926
Likes: 18
From: Central Texas
Default
If everything is "Right" you can push the piston and rings with your thumbs no need for a hammer...
Reply
0
Back to Subforum
Generation III Internal Engine
View Next Unread
Buying Ls6 heads Questions.




Advanced Search

All times are GMT -5. The time now is 05:23 PM.

story-0
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-1
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-2
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-3
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-4
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-5
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-6
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-7
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-8
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE
story-9
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE