Return Caps Rev. 1.0
Thread Starter
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Cargo Master
Joined: Oct 2008
Posts: 3,330
Likes: 13
From: Eaton, CO
Return Caps Rev. 1.0
They've finally arrived...
Sorry about the poor quality Samsung P&S pics... The caps turned out quite well. Revision 1.0 is a material change to brass. After I showed him the last round of backyard TIG welding, my dad decided to change materials and silver solder them himself. I couldn't get the flux off with the non-abrasive scotch brite pads I have.
Sorry about the poor quality Samsung P&S pics... The caps turned out quite well. Revision 1.0 is a material change to brass. After I showed him the last round of backyard TIG welding, my dad decided to change materials and silver solder them himself. I couldn't get the flux off with the non-abrasive scotch brite pads I have.
Lead Driver
Joined: Dec 2006
Posts: 6,496
Likes: 94
From: So. Jersey
I was wondering what happen with the follow up. Nice proto-types. Do you have some Viton #111 o-rings (16) to try them out? They appear pretty thick in the wall, he could probable turn the O.D. down some to save bulkiness which may cause premature o-ring failure from vibration. Keep us updated and see if he's willing to make sets for resale after some testing.
Thread Starter
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Cargo Master
Joined: Oct 2008
Posts: 3,330
Likes: 13
From: Eaton, CO
Yep, 42 viton o-rings left for testing these.
The barbs sit inside a tight clearance hole and the solder runs in after heating creating an air/water tight seal. That's the reason for the thickness. I suppose he could've stepped it down a bit away from the barb holes.
I thought he was going to fin these like he did the aluminum, but he was in a hurry due to all the other work he has. He wants to know if they work or not. He's actually making another few aluminum ones and experimenting with brazing/soldering aluminum. If he can do it, he'll send me a complete set of aluminum caps too.
The barbs sit inside a tight clearance hole and the solder runs in after heating creating an air/water tight seal. That's the reason for the thickness. I suppose he could've stepped it down a bit away from the barb holes.
I thought he was going to fin these like he did the aluminum, but he was in a hurry due to all the other work he has. He wants to know if they work or not. He's actually making another few aluminum ones and experimenting with brazing/soldering aluminum. If he can do it, he'll send me a complete set of aluminum caps too.
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
They look sweet, my concern is heat ...
I would ensure your return line routing leaves no dead headed ends ...
-Enjoy
fh : )_~
I would ensure your return line routing leaves no dead headed ends ...
-Enjoy
fh : )_~
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Postmaster
Joined: Jun 2009
Posts: 3,420
Likes: 1
From: Maryland
use the n/a setup for all motors i hate dead headsjust leav long enough hose to let it sit under the turbo if you have one or get viton lines they are pretty resistant to heat
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Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
Not all the N/A return layouts are the same ... It's specific to the 7.3 N/A.
Basically, it goes from the Filter through the right bank to the Tee at the back of the motor, and from the IP through the left bank to the Tee at the back of the motor ...
-Enjoy
fh : )_~
Basically, it goes from the Filter through the right bank to the Tee at the back of the motor, and from the IP through the left bank to the Tee at the back of the motor ...
-Enjoy
fh : )_~
Thread Starter
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Cargo Master
Joined: Oct 2008
Posts: 3,330
Likes: 13
From: Eaton, CO
Success
Got them installed yesterday after doing the valve cover gaskets, retorquing the rocker bolts, installing new glowplugs & injectors.
No leaks so far. We used the average tolerance between all plastic caps. Installing these was a bit more difficult because they're not plastic and don't give at all when pushing them over the o-rings. So you don't get that snap, but they've been machined so when the fuel lines are tightened, the caps will seat properly. I actually gave them a few taps with a very small brass hammer. You're able to turn them by hand when they're installed. I have not measured their temperature since running them.
No leaks so far. We used the average tolerance between all plastic caps. Installing these was a bit more difficult because they're not plastic and don't give at all when pushing them over the o-rings. So you don't get that snap, but they've been machined so when the fuel lines are tightened, the caps will seat properly. I actually gave them a few taps with a very small brass hammer. You're able to turn them by hand when they're installed. I have not measured their temperature since running them.
Fleet Owner
Joined: Jul 2006
Posts: 20,373
Likes: 841
From: Mi'kma'ki
Got them installed yesterday after doing the valve cover gaskets, retorquing the rocker bolts, installing new glowplugs & injectors.
No leaks so far. We used the average tolerance between all plastic caps. Installing these was a bit more difficult because they're not plastic and don't give at all when pushing them over the o-rings. So you don't get that snap, but they've been machined so when the fuel lines are tightened, the caps will seat properly. I actually gave them a few taps with a very small brass hammer. You're able to turn them by hand when they're installed. I have not measured their temperature since running them.
No leaks so far. We used the average tolerance between all plastic caps. Installing these was a bit more difficult because they're not plastic and don't give at all when pushing them over the o-rings. So you don't get that snap, but they've been machined so when the fuel lines are tightened, the caps will seat properly. I actually gave them a few taps with a very small brass hammer. You're able to turn them by hand when they're installed. I have not measured their temperature since running them.
your going to get a few pms i bet now,with people begging you to make them a set.
Postmaster
Joined: Jan 2010
Posts: 4,319
Likes: 4
From: Elk City, OK
damn, cant believe i missed this post. i think it was when i was heading to boston. those look bad a$$ man. cant wait for them to be proven and you start selling them 
maybe your dad can make me the 2nd set and send them when he quotes you on those pto extender coolers
maybe your dad can make me the 2nd set and send them when he quotes you on those pto extender coolers
