Announcement Block
As of 12/1/2021, a major update of the forum software was accomplished

Update: 4/20/2024: The Eagles email account at GoDaddy no longer works. I have set up a gmail account as a workaround: eaglesinternational.email@gmail.com (This link seems to work for my outlook email, but may not work for other email platforms. If it does not load, copy and paste the link in your platform.)

Registration is open to the public (*) and free from any cost or obligation. Please allow up to 36 hours for your application to be processed. If you have problems registering, please email me at: eaglesinternational.email@gmail.com
(*) spambots will be deleted -- only legitimate public applications will be processed.

Reminder: the "quick links" menu offers you the best navigation of this forum -- you need to be registered and logged in to see that menu.

Front 8V71 leak identification

This is a public forum to discuss Eagle related technical issues. If you are having a problem with your Eagle, this is the place to find help.
User avatar
darryl97420
Posts: 105
Joined: Sun Nov 01, 2015 3:50 pm
Bus Model: 1978 Eagle 05
1986 Eagle 10
Location: Coos Bay, Oregon

Front 8V71 leak identification

Post by darryl97420 »

While looking at the engine for the ID tag, I found this
20160202_092111.jpg
and believe its my main oil leak.

Here is another look further out.
20160202_092104.jpg
I would think there should be a cover of some sort and do see bolt holes.

To give perspective and clear location.
20160202_092118.jpg
Thoughts?
Darryl
1978 Eagle 05, 8V71, Jake Brakes, Alison HT740, Original caps front and back
1986 Eagle 10, Cummins NTC-300, Alison HT740
davido
Club Member
Club Member
Posts: 81
Joined: Mon Jan 17, 2011 2:37 pm
FMCA #: F419796
Bus Model: 1970 Model 05. VIN8284. 8V71N. Voith 4 Manual.
Location: College Station, TX

Re: Front 8V71 leak identification

Post by davido »

Did you ever get this figured out? I could take a few pics of mine and look tomorrow.
DavidO - 1970 Model 05 #8284 - http://www.tinyurl.com/1970silvereagle" onclick="window.open(this.href);return false;
User avatar
darryl97420
Posts: 105
Joined: Sun Nov 01, 2015 3:50 pm
Bus Model: 1978 Eagle 05
1986 Eagle 10
Location: Coos Bay, Oregon

Re: Front 8V71 leak identification

Post by darryl97420 »

I've heard several theories but nothing solid as what it is. One member send me a cover but its too small so the opening is still open.

One DD mechanic said it was the intercooler connection but that would mean I have a turbo engine without a turbo.

Any thoughts would be appreciated.
Darryl
1978 Eagle 05, 8V71, Jake Brakes, Alison HT740, Original caps front and back
1986 Eagle 10, Cummins NTC-300, Alison HT740
User avatar
luvrbus
Club Member
Club Member
Posts: 2981
Joined: Mon Oct 13, 2008 12:50 pm
FMCA #: F262917
Bus Model: 05

Re: Front 8V71 leak identification

Post by luvrbus »

If it is on top of engine under the governor it is for the aftercooler tube just means you have a aftercooler block fwiw I have that also
User avatar
darryl97420
Posts: 105
Joined: Sun Nov 01, 2015 3:50 pm
Bus Model: 1978 Eagle 05
1986 Eagle 10
Location: Coos Bay, Oregon

Re: Front 8V71 leak identification

Post by darryl97420 »

What does having an aftercooler block mean and what do I cover the hole with?
Darryl
1978 Eagle 05, 8V71, Jake Brakes, Alison HT740, Original caps front and back
1986 Eagle 10, Cummins NTC-300, Alison HT740
User avatar
luvrbus
Club Member
Club Member
Posts: 2981
Joined: Mon Oct 13, 2008 12:50 pm
FMCA #: F262917
Bus Model: 05

Re: Front 8V71 leak identification

Post by luvrbus »

Just means you can install a after cooler for a turbo engine you can cover the hole with a plate I am out of town so I cannot send you a plate
User avatar
darryl97420
Posts: 105
Joined: Sun Nov 01, 2015 3:50 pm
Bus Model: 1978 Eagle 05
1986 Eagle 10
Location: Coos Bay, Oregon

Re: Front 8V71 leak identification

Post by darryl97420 »

Since this is an after cooler engine, what are the odds that this engine has the lower compression needed to run a turbo? It would be cool to have an engine ready to bolt on a turbo kit.
Darryl
1978 Eagle 05, 8V71, Jake Brakes, Alison HT740, Original caps front and back
1986 Eagle 10, Cummins NTC-300, Alison HT740
thomasinnv
Posts: 22
Joined: Mon Mar 05, 2012 10:44 am
Bus Model: 1998 MCI 102-DL3
11.1 Series 60 w/ Allison B500

Re: Front 8V71 leak identification

Post by thomasinnv »

darryl97420 wrote:Since this is an after cooler engine, what are the odds that this engine has the lower compression needed to run a turbo? It would be cool to have an engine ready to bolt on a turbo kit.
Pretty slim. Lots of these blocks out there put together as na.

Sent from my SM-G920T using Tapatalk
davido
Club Member
Club Member
Posts: 81
Joined: Mon Jan 17, 2011 2:37 pm
FMCA #: F419796
Bus Model: 1970 Model 05. VIN8284. 8V71N. Voith 4 Manual.
Location: College Station, TX

Re: Front 8V71 leak identification

Post by davido »

What dawned on me is that I don't know if you were talking about the front of the bus or front of he engine (which may face the back of the bus).

But this is what I took pics of and it doesn't have anything like what yours shows.

Image

Image
DavidO - 1970 Model 05 #8284 - http://www.tinyurl.com/1970silvereagle" onclick="window.open(this.href);return false;
User avatar
luvrbus
Club Member
Club Member
Posts: 2981
Joined: Mon Oct 13, 2008 12:50 pm
FMCA #: F262917
Bus Model: 05

Re: Front 8V71 leak identification

Post by luvrbus »

It should be blowing air when running but I cannot tell from his photos, if he can find a bus with a 6v92 or 8v92 he can see the coolant pipe going from the after cooler to t stat housing on the right side feeding the cooler the return is under the cooler it has no return piping so don't try to find one.

His engine could be a military issue they used that entry to install the diesel fired heater inside the engine block for cold weather starting,they may have left the flame burner inside the engine and just removed the fuel inlets if it is a military engine who knows without seeing it in person
Post Reply