Top End Rebuild-run into piston ring problems! - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Top End Rebuild-run into piston ring problems!

Building a Bumper?Ruffstuff Axle Simple Swap Kit!~Artec JK 1 TON SWAP~

Reply
Unread 06-21-2010, 06:12 PM   #1
grimjeeperyj14
Registered User
1990 YJ Wrangler 
 
Join Date: Sep 2009
Location: Northampton, PA
Posts: 229
Top End Rebuild-run into piston ring problems!

Im am rebuilding a 1990 4.2 and need advice on what to do. I honed the carbon and such out of the cylinders and plan on putting standard size rings back in. My problem is all the cylinders measure the correct bore diameter(maybe .001 over) but the #1 cylinder measures .003 over. due to a broken ring ,can I still use the standard ring or will this screw it up? I really dont want to have it bored over at this time, can I make it work?

-I plan on using a rebuilt 4.0 head on the 4.2 block. I have read it increases compression if that matters.

__________________
Driving my Jeep is uncomfortable, loud and drafty.... and I love every minute of it
grimjeeperyj14 is offline   Reply With Quote
Unread 06-22-2010, 10:35 AM   #2
grimjeeperyj14
Registered User
1990 YJ Wrangler 
 
Join Date: Sep 2009
Location: Northampton, PA
Posts: 229
Any suggestions, Im sure someone has fixed something like this before?
__________________
Driving my Jeep is uncomfortable, loud and drafty.... and I love every minute of it
grimjeeperyj14 is offline   Reply With Quote
Unread 06-22-2010, 10:55 AM   #3
pasinbuy
Registered User
1994 YJ Wrangler 
 
Join Date: Feb 2007
Location: florida
Posts: 3,836
I do not think that .003 will make a differance. Take a piece of regular notebook paper and measure it. Notebook paper is .003 inches thick.

.030 is a differant matter.
pasinbuy is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.