vent hole ? or plug it
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Laughing Gas
Joined: Nov 2010
Posts: 915
Likes: 1
From: oriental NC.
vent hole ? or plug it
has anyone pluged the hole in the back of the vally that leads into bellhousing ,i have had two clutch baths oil and fuel ?since i got it accessible now it would be a good time . also ithought about extending the hole with a tube above the hieght of the manifold. if i needed it to vent. any ideas? its along way to the clutch in 4x4
wes
wes
Cargo Master
Joined: May 2010
Posts: 3,047
Likes: 10
From: Snohomish, WA
How about making a drain tube instead. You could get a piece of Tygon tubing that will fit in the hole. Route it down the back of the block, and out the bottom. It would still allow a drain path and wouldn't kill a clutch. Just do a fillet seal of high temp RTV around the tubing at the hole.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
You want that drain to remain there, otherwise you'll end up with a huge puddle between the cylinder heads.
Extending the drain with a tube is a great idea, but it would be much better to fix the source of the leak.
Extending the drain with a tube is a great idea, but it would be much better to fix the source of the leak.
Thread Starter
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Laughing Gas
Joined: Nov 2010
Posts: 915
Likes: 1
From: oriental NC.
How about making a drain tube instead. You could get a piece of Tygon tubing that will fit in the hole. Route it down the back of the block, and out the bottom. It would still allow a drain path and wouldn't kill a clutch. Just do a fillet seal of high temp RTV around the tubing at the hole.
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Laughing Gas
Joined: Nov 2010
Posts: 915
Likes: 1
From: oriental NC.
once for fuel lever oring and once for hpop line oring . wes
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
I still like the idea of a drain tube.
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
I started another thread without even looking at the list... I promise, I WILL be doing something different while my engine is out. Pics to come! 
We'd all like to fix our leaks the moment they happen - but it only takes a little oil/fuel to contaminate a clutch. I have lost 2 gals of oil a couple times before I knew there was a problem...
This was a stupid design flaw IMO. In the 220k miles I've had this truck, I have enough experience to know that sooner or later the damn things gonna leak something again... 
We'd all like to fix our leaks the moment they happen - but it only takes a little oil/fuel to contaminate a clutch. I have lost 2 gals of oil a couple times before I knew there was a problem...
This was a stupid design flaw IMO. In the 220k miles I've had this truck, I have enough experience to know that sooner or later the damn things gonna leak something again...
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Laughing Gas
Joined: Nov 2010
Posts: 915
Likes: 1
From: oriental NC.
if motor is out it makes since to run a tube of some sort down the back of motor / bell housing to help because some day it will leak agian and at least you dont need to pull trans no fun in my 4x4 . i think for now i will still try something to stop from going in bellhousing. im thinking extending up to a level above the manifold.mabey an epoxed short tube ? wes
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Cargo Master
Joined: May 2010
Posts: 3,047
Likes: 10
From: Snohomish, WA
I am pretty sure there is enough meat there to support a NPT pipe thread. If I ever decided to do it, I would thread it an insert a 90 degree fitting to route it down to below and out the bottom. Depending on the access I would use Tygon tubing or hard-line bent to follow the contours better.
Once installed you could always shoot air through it to keep it cleaned out.
Once installed you could always shoot air through it to keep it cleaned out.
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
Wes, this is not a 'vent' its just the drain for the valley. Stick a piece of cork in it and be done. The only worry I have about that is submerging wires, sensors, etc in the valley in HOT oil or fuel.
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Laughing Gas
Joined: Nov 2010
Posts: 915
Likes: 1
From: oriental NC.
you know ive been thinking that in my 30 years of building cars and trucks i have never seen a bellhousing that had a hole on the top ! only a access cover on bottom . ford / chevy / dodge / every other trans ive worked on! i just looked at this agian this morning the level would be very low, below turbo pedestal bolts no wires or sensers just fuel lines and oil lines would be lower . the back of the manifold is steped down in the back . i guess you could have about a 3 in in vally worst case . im gonna plug it!!
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