6066 (1960-1966) GMC Truck Club Bitcoin now accepted here! 
Pay Dues
Pay Dues or become a Site Supporter
 



Go Back   6066 (1960-1966) GMC Truck Club > 6066 GMC Truck Club Forum > GMC V6 and V12 Engines


GMC V6 and V12 Engines Engine repair and rebuilding

Reply
 
Thread Tools
  #21  
Old June 15th, 2016, 10:22 PM
ilvracn's Avatar
ilvracn ilvracn is offline
-= Dues Paid =-
 
Join Date: Nov 2013
Location: atlantic iowa
Truck: 1966 gmc 1500
Age: 59
Posts: 215
Rep Power: 123
ilvracn is on a distinguished road
Default Re: Removing stuck pistons

I BOUGHT A 29 MODEL A A WHILE BACK. GUESS I'M A GLUTEN FOR PUNISHMENT. ANY WAY, ENGINE WAS LOCKED UP. I POURED 6-OZ OF EVAPORUST IN EACH CYLINDER, WAITED 15 MIN. AND WAS ABLE TO TURN ENGINE OVER AFTER WORKING IT BACK AND FORTH FOR ABOUT 5 MINUTES
Reply With Quote
  #22  
Old June 16th, 2016, 01:01 AM
bobdylan bobdylan is offline
Senior Member
 
Join Date: Mar 2015
Location: mclouth kansas
Truck: 64 Gmc suburbann 305e, 4speed. v12 truck engine, v12 irrigation,2-305e,305a,305d
Age: 68
Posts: 373
Rep Power: 152
bobdylan is on a distinguished road
Default Re: Removing stuck pistons

Has anyone ever tried Ultra One rust remover?
Reply With Quote
  #23  
Old May 22nd, 2018, 01:52 AM
Michael S. Wilson Michael S. Wilson is offline
-= Dues Paid =-
 
Join Date: Dec 2015
Location: Casa Grande,AZ
Truck: I don't own one - YET!
Age: 67
Posts: 17
Rep Power: 56
Michael S. Wilson is on a distinguished road
Default Re: Removing stuck pistons

I recently bought a 401M long block that was never used. It ended up outside with no covering except a hub cap over the intake. It was very stuck. I pulled the heads and found that only two cylinders were in trouble and was able to remove the other four along with the crank. Pistons were brand new standard size. Cylinders where sleeved. I cleaned the two rusty cylinders as good as I could and rotated the block so these were level. I covered the pistons with muriatic acid which is available at Home Depot for cleaning swimming pools. I soaked for an hour and then cleaned everything up. One piston came out and looked reusable. The other needed and additional hour and it came out. I'm not seeing anything wrong with the pistons but I haven't removed the rings and inspected the lands yet. I have them soaking in cleaner right now. Both sleeves need to be replaced. I think Ill try to locate two new pistons but I wouldn't be surprised if these two could be reused.
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Stuck clutch 62 4 speed Ancientx Transmissions and Rear Ends 2 July 3rd, 2015 03:57 AM
stuck 478 abus319 GMC V6 and V12 Engines 56 May 14th, 2015 03:53 AM
Stuck spark plug jagarra GMC V6 and V12 Engines 27 December 6th, 2014 09:25 PM
Rear Drum Stuck adjuster frozen Schroer1962v3000Dump Wheels, Tires, Suspension and Brakes 2 May 8th, 2014 12:12 AM
Stuck 'em Archiver Previous Forum Posts 0 October 11th, 2002 01:36 AM


All times are GMT +1. The time now is 04:46 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd 681711554703|1710431170|0