Discovery II Talk about the Land Rover Discovery II within.
Sponsored by:
Sponsored by:

Slipped sleeve and a little bit of high school science

Thread Tools
 
Search this Thread
 
  #1  
Old 04-15-2021, 10:18 PM
matt3502's Avatar
Winching
Thread Starter
Join Date: Sep 2010
Location: Fairfield County, CT
Posts: 745
Received 141 Likes on 108 Posts
Default Slipped sleeve and a little bit of high school science

As I mentioned in a previous post, I am doing the HG's but ran in to a problem. The sleeve of #4 was pushed out of the block but just under 1mm:

Thru a little high school science I was able to press the sleeve back down. By loading the cylinder with dry ice, and using a 1/2" steel plate with holes drilled to match the head bolt locations I pushed the sleeve down gradually:

First load

First Press

Second load

Second press

Sleeve has gone from being up .83mm to .406mm

Third press

Sleeve flush with block
The super cold dry ice contracted the sleeve just enough to get it to move, just like pro mechanics shrink bearings before installation. In between each press, the balance of the dry ice was removed and the block came back to room temp very quickly. I used the old head bolts with a coating of 3in1 oil. To keep the bolts from going all the way down, each bolt had 10 washers on it. The bolts were put in using a cross pattern and a cheater bar applying a 90* turn to simulate torqueing the bolts down. The trick was to get the plate in place very quickly as you want limited transfer of the cold to the block from the sleeve.
Do I know if this is going to keep the sleeve down long once I get the engine buttoned back up? No clue but this battle plan came from the guy who milled my heads and builds competition racing engines like the Ford 427 he had on the test stand today. Wish I could drop that into my Rover!
 
The following 5 users liked this post by matt3502:
greisinb (04-15-2021), jacobmstein (05-05-2021), JUKE179r (04-15-2021), Richard Gallant (04-15-2021), whowa004 (04-17-2021)
  #2  
Old 04-15-2021, 10:52 PM
JUKE179r's Avatar
Camel Trophy
Join Date: May 2016
Location: Britainistan, UK
Posts: 3,967
Received 851 Likes on 634 Posts
Default

Great job!
 
The following users liked this post:
matt3502 (04-16-2021)
  #3  
Old 04-15-2021, 11:08 PM
Richard Gallant's Avatar
Camel Trophy
Join Date: Sep 2017
Location: Mission BC Canada
Posts: 3,529
Received 1,178 Likes on 815 Posts
Default

Nice ! In theory it should stay with a good quality gasket,properly torqued head and good cooling system
 
  #4  
Old 04-16-2021, 03:31 AM
Extinct's Avatar
Camel Trophy
Join Date: Feb 2013
Location: Lynchburg VA
Posts: 4,568
Received 1,509 Likes on 1,069 Posts
Default

Excellent work!! If you want it to stay you can pin the cylinders - multiple writeups on that.
 
  #5  
Old 04-16-2021, 03:58 AM
JUKE179r's Avatar
Camel Trophy
Join Date: May 2016
Location: Britainistan, UK
Posts: 3,967
Received 851 Likes on 634 Posts
Default

Pinned sleeve pdf...
 
Attached Files
File Type: pdf
Pinning_V8_Liner.pdf (1.58 MB, 139 views)
The following users liked this post:
whowa004 (04-17-2021)
  #6  
Old 04-16-2021, 04:29 AM
mln01's Avatar
Camel Trophy
Join Date: Dec 2009
Location: Charlotte
Posts: 3,762
Received 895 Likes on 646 Posts
Default

Very nice work, but having dodged a bullet I'd do what Extinct said and go ahead and pin the liners.
 
  #7  
Old 04-16-2021, 06:53 AM
mollusc's Avatar
TReK
Join Date: Nov 2015
Location: Staten Island, NY
Posts: 3,431
Received 789 Likes on 655 Posts
Default

Why did you remove the dry ice from the cylinder cavity when you put the plate on top? Wouldn't it have been better to leave it in there so that things stayed cold for a little longer?
 
  #8  
Old 04-16-2021, 07:24 AM
XRAD's Avatar
Pro Wrench
Join Date: Feb 2019
Posts: 1,277
Received 440 Likes on 300 Posts
Default

what did the head gasket metal ring look like for that cylinder vs the others? Block mght have been sent out from factory like that, or liner moved on it's own later.... If the HG shows signs of chronic impact (ie: a dirty indented ring) vs a clean compressed ring(like it's always been that way...)....

Bottom of head dented in at that cylinder?

And finally, anyone know what HG compression thickness is? Compare that to your 'proud liner measurement.'
 
  #9  
Old 04-16-2021, 07:52 AM
Alex_M's Avatar
Camel Trophy
Join Date: Aug 2014
Location: Southwestern Virginia
Posts: 4,734
Received 971 Likes on 646 Posts
Default

Originally Posted by mollusc
Why did you remove the dry ice from the cylinder cavity when you put the plate on top? Wouldn't it have been better to leave it in there so that things stayed cold for a little longer?
I think OP did leave it in place for the press, but removed it between each press so the block would stay as warm as possible.
 
  #10  
Old 04-16-2021, 08:47 AM
matt3502's Avatar
Winching
Thread Starter
Join Date: Sep 2010
Location: Fairfield County, CT
Posts: 745
Received 141 Likes on 108 Posts
Default

I did not remove the dry ice when I put the press plate on. I removed it after each press. The transfer of the cold from the steel to the block happens very quickly so each time I would remove the dry ice, allow everything to come back to room temp. Then drop more dry ice and quickly go to pressing. The main goal is to shrink just the sleeve as quickly as possible.
 
The following users liked this post:
Richard Gallant (04-16-2021)


Quick Reply: Slipped sleeve and a little bit of high school science



All times are GMT -5. The time now is 02:20 AM.