Add EZ-Oil valves to 3126 Coolant J-Pipe

@dtfeld you must have cleaned amazon out of those 6405-04-04-o-ss male to female converters...none left.

I think I have come up with a work around.

finished.png
 
David, one thing you might want to do is change the o-ring out for a Viton o-ring. There may only be a cheapie o-ring on there which could crack and leak in short time. Or, at least, find out the composition of the o-ring.
 
Lazy Daze said:
NPT is NPT. NPTF is simply just NPT "Female". NPT is the designation for a particular tapered thread. National Pipe Taper... often just referred to as "pipe".
Click to expand...
NPTF is different than NTP; the F is not a designation for Female - a higher tolerance thread for critical functions. Same pitch and taper but the thread formation is different.
 
ttmott said:
NPTF is different than NTP; the F is not a designation for Female - a higher tolerance thread for critical functions. Same pitch and taper but the thread formation is different.
Click to expand...

Interesting - learn something new everyday! :)

David, did you use "NPTF" in your original thread with the idea that "F" was for Female to mate to the oil drain valve? That's how I read it, anyways.

But... end result would be that regular 'ol NPT is more than up the challenge in this situation? Thanks for the new info for my brain, TT!
 
Lazy Daze said:
Interesting - learn something new everyday! :)

David, did you use "NPTF" in your original thread with the idea that "F" was for Female to mate to the oil drain valve? That's how I read it, anyways.

But... end result would be that regular 'ol NPT is more than up the challenge in this situation? Thanks for the new info for my brain, TT!
Click to expand...
From my aerospace shot glass.
 
ttmott said:
NPTF is different than NTP; the F is not a designation for Female - a higher tolerance thread for critical functions. Same pitch and taper but the thread formation is different.
Click to expand...
NPT need pipe tape or dope to complete the seal as the crests and the roots of the threads do not mate creating a small “tunnel” which allows a leak. Only the flanks of the threads compress together because the crests are truncated. The tape or dope fills that gap.
NPTF threads do not have that truncation in the crests so the extra material compresses at the root and the flanks and the root mate together creating a “dry seal” with no need for tape or dope. This only works on the initial mating. If the NPTF parts are disassembled, they functionally become NPT threads and should be replaced if an NPTF thread is required.
An NPTF tap can be used for an NPT tap but not vice versa. Technically the thread tolerances are the same, it’s the lack of thread truncation on the crests leaving extra material to compress to fill those gaps. Previously, I have posted pictures in other threads. I can post them again when I’m on my CPU not my phone.
For 40 years I have been selling and training people on taps working for a tap manufacturer.
 
It was going so well, and then I realised (again) that port and starboard are not a mirror image of one another!

EZ-Drain-stbd1.jpg


ez-drain-port1.jpg


Ordered a 90 degree elbow...:mad:
 
Installed both sides today. I left the expansion tank cap on and removed the plug/oring. Inserted EZ Oil and tightened down. About 2 cups spilled into a waiting pan as I got the valve installed. Its under a little bit of vacuum so very easy swap. Still need to add a plug to the end of the tube to keep it clean.

Hooked up to my transfer pump and 7 gallons later all done.


Going to flush and refill today.

20240327_134436.jpg
20240327_134417.jpg
 
How did you go with your Port side?
Did the J-pipe overlap the engine mount stringer like mine or were you clear?
 
Magic said:
How did you go with your Port side?
Did the J-pipe overlap the engine mount stringer like mine or were you clear?
Click to expand...

Mine overlaps, just like yours - 450 DA

Thats wht I set it up the way I did.

BEST !

RWS
 
I take it you used an elbow on the port side?
I am struggling to source a stainless elbow 7/16-20 SAE ORB male to 1/4-18 NPT female.
Probably get a 7/16-20 SAE m-f elbow and then use a straight to convert to NPT.
 
Magic said:
How did you go with your Port side?
Did the J-pipe overlap the engine mount stringer like mine or were you clear?
Click to expand...
Mine was clear. I have enough room to get a 2 or 3 qt pan underneath both sides.

I went back with the CAT plugs, and will just keep the valve for future service.
 
Here's photos of my install on a 1996 450 DA:

Note: For redundancy, I am leaving the plug in, just in case a valve gets bumped.

So, remove plug, screw in nipple, open valve.....

Simple :)

STARBOARD:

IMG_6116[1].JPG




PORT:

IMG_6115[1].JPG
 
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