Bus Conversions dot Com Bulletin Board
December 19, 2014, 06:15:24 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: If you had an Online Subscription: It arrives at least two weeks before the First Class printed magazine.
   Home   Help Forum Rules Search Calendar Login Register BCM Home Page Contact BCM  
Pages: 1 [2] 3 4   Go Down
  Print  
Author Topic: Series 60 Bubbling Coolant  (Read 7555 times)
rv_safetyman
Hero Member
*****
Online Online

Posts: 2199


Jim Shepherd


WWW

Ignore
« Reply #15 on: November 20, 2010, 06:48:30 AM »

Wow, lots of simultaneous posting going on here!

You had to look very close to see the migration path of the combustion gases.  Indeed, the mechanic had to show me a couple of times before I could faintly see it.  Not obvious.

Head has not been tested, so it could still be the problem.

I will try to post a PDF of the page from the manual that shows the measuring of the liner height.  (Didn't work, so working on posting it elsewhere).

Jim
Logged

Jim Shepherd
Evergreen, CO
85 Eagle 10/Series 60/Eaton AutoShift 10 speed transmission
Somewhere between a tin tent and a finished product
Bus Project details: http://beltguy.com/Bus_Project/busproject.htm
Blog:  http://rvsafetyman.blogspot.com/
RichardEntrekin
Full Member
***
Offline Offline

Posts: 127





Ignore
« Reply #16 on: November 20, 2010, 06:52:18 AM »

Jim,

I have coolant in the oil. But no oil in coolant.

I don't know exactly where the breach is, but my thoughts are that whent the engine is running the compression in the cylinder is far greater than the compression in the cooling system, hence the exhaust gas pressurizes the coolant. When the engine stops, the coolant system is now pressurized and the engine is not, so the pressure forces the coolant into the cylinder. I just need to find the path.

I do not want to just throw parts at it, and cross my fingers that I fixed the problem. It's too much work just to hope I fixed it.
Logged

Richard Entrekin
95 Newell, Detroit S 60
Subaru Outback toad
Huntington WV

Often wrong, but seldom in doubt
RichardEntrekin
Full Member
***
Offline Offline

Posts: 127





Ignore
« Reply #17 on: November 20, 2010, 06:53:18 AM »

I have the DD manual. I have to fab the sled for the dial indicator to fit on.
Logged

Richard Entrekin
95 Newell, Detroit S 60
Subaru Outback toad
Huntington WV

Often wrong, but seldom in doubt
rv_safetyman
Hero Member
*****
Online Online

Posts: 2199


Jim Shepherd


WWW

Ignore
« Reply #18 on: November 20, 2010, 07:03:15 AM »

Wow, 25 steps later and I have a jpg that I can post and then you tell me you already have the info Grin

I probably need to step back and spend some time reading this thread again.  If you have water in the oil, that would explain the frothing on the rockers.

I will post the jpg for others. 

Right now I am lost, and out of time.  I will take a look at the thread later today and see if anything trips some other thoughts.

Jim
Logged

Jim Shepherd
Evergreen, CO
85 Eagle 10/Series 60/Eaton AutoShift 10 speed transmission
Somewhere between a tin tent and a finished product
Bus Project details: http://beltguy.com/Bus_Project/busproject.htm
Blog:  http://rvsafetyman.blogspot.com/
TomC
Hero Member
*****
Offline Offline

Posts: 6971





Ignore
« Reply #19 on: November 20, 2010, 07:24:03 AM »

Sounds like a cracked cylinder head-since no oil in the coolant.  If a cylinder liner was cracked, the coolant would be contaminated.  Cracked head allows oil and exhaust gases into the valve cover area where your fine mixture was made.  Sounds like it's new cylinder head time.  Good Luck, TomC
Logged

Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.
Dreamscape
Dreamscape
Global Moderator
Hero Member
*****
Offline Offline

Posts: 3322


1968 Silver Eagle Model 01 8V71 Allison 740 #7443


WWW
« Reply #20 on: November 20, 2010, 08:24:46 AM »

Head Gasket 5 to 6



Head 5 to 6



Deck 5 to 6

Logged

Becky and Paul Lawry, On The Road
Travel Blog - http://dreamscapetravels.wordpress.com/
Bus Blog - http://dreamscapesilvereagle.wordpress.com/
______________________________________________________

Our coach was originally owned by the Dixie Echoes.
thomasinnv
Derrick Thomas
Hero Member
*****
Offline Offline

Posts: 751


I may be nuts, but only for buses


WWW

Ignore
« Reply #21 on: November 20, 2010, 08:28:05 AM »

the one combustion chamber on the head shot sure looks clean, like it was getting steam cleaned, know what i mean?  a little rust next to the valve too.  sure looks like a leaky gasket or liner.  but what do I know, I'm just your average shade tree....
Logged

There are three kinds of people in this world....those that make things happen, those that watch things happen, and those that just wonder what the heck is happening. Which one are you?

1977 MCI Crusader MC-8
8V71N/740
95% converted (they're never really done, are they?)
Zeroclearance
Hero Member
*****
Offline Offline

Posts: 523





Ignore
« Reply #22 on: November 20, 2010, 10:38:37 AM »

From the pictures it looks like you have a liner that has "sunk"

Logged
luvrbus
Hero Member
*****
Online Online

Posts: 13126




Ignore
« Reply #23 on: November 20, 2010, 10:47:28 AM »

Richard, are the head bolts the new style (white on top) 



good luck
Logged

Life is short drink the good wine first
RichardEntrekin
Full Member
***
Offline Offline

Posts: 127





Ignore
« Reply #24 on: November 20, 2010, 10:49:01 AM »

Zeroclearance

What do you see in the pictures that tells you that you are looking at a sunken liner.
Logged

Richard Entrekin
95 Newell, Detroit S 60
Subaru Outback toad
Huntington WV

Often wrong, but seldom in doubt
RichardEntrekin
Full Member
***
Offline Offline

Posts: 127





Ignore
« Reply #25 on: November 20, 2010, 10:51:26 AM »

Clifford,

They are not the new style. They are the original head bolts, and the engine has a a 1994 build date.
Logged

Richard Entrekin
95 Newell, Detroit S 60
Subaru Outback toad
Huntington WV

Often wrong, but seldom in doubt
luvrbus
Hero Member
*****
Online Online

Posts: 13126




Ignore
« Reply #26 on: November 20, 2010, 10:55:45 AM »

Richard, that is what I was thinking that looked like the old style head gasket upgrade to the new gasket and bolts and you will be fine I don't see a low liner in your photos 



good luck
Logged

Life is short drink the good wine first
RichardEntrekin
Full Member
***
Offline Offline

Posts: 127





Ignore
« Reply #27 on: November 20, 2010, 10:57:41 AM »

This is a dumb newbie question that perhaps Clifford will humor me and answer. If the liner is sunken, is it as simple as replacing the liner? Does a new liner usually protrude the correct amount? or does a new liner automatically require recutting of the seat to achieve the correct height?

And where do you guys normally source your DD parts? Local shop? or favorite supplier?
Logged

Richard Entrekin
95 Newell, Detroit S 60
Subaru Outback toad
Huntington WV

Often wrong, but seldom in doubt
luvrbus
Hero Member
*****
Online Online

Posts: 13126




Ignore
« Reply #28 on: November 20, 2010, 11:18:24 AM »

Richard, if you do have one sunk they have to be machine out to accept the 0.30 over sized shim under the liner hope you don't have to go that route.    www.dieselpro.com is a good outlet for aftermarket parts I believe the head gasket set cost around 125 bucks I forgot what the new style head bolts cost somewhere around 5 bucks each
Lay a straight edge over the cylinders and use a feeler gauge at each cylinder you can tell real quick if one is low  


good luck
« Last Edit: November 20, 2010, 11:25:04 AM by luvrbus » Logged

Life is short drink the good wine first
Zeroclearance
Hero Member
*****
Offline Offline

Posts: 523





Ignore
« Reply #29 on: November 20, 2010, 12:26:48 PM »

The lower liner looks a hair low.   This issue has plaggued the CAT 3406 "C" and "E" >>  erosion to the lower liner seal.  

Most good shops will have the tool to cut the upper cylinder block liner seat.    Clifford has mentioned the correct method to restore the height with a shim.

Get a good straight edge and a good depth "micrometer"   You can use a feeler gauge to measure around the liner to check your height.   This is a good practice on any engine with the cylinder head removed.
« Last Edit: November 20, 2010, 12:28:37 PM by Zeroclearance » Logged
Pages: 1 [2] 3 4   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!