Sending units?

[Hugh Heifer]

Exactly. I have not even begun to address the Japanese fuel line fittligs.

We are accomplishing much in this thread hijack, Grasshopper

 

[Hugh Heifer]

Here is a place that sells adapters and an example of a Brass Metric Adapter Type: Adapter Internal Thread Size: 1/4-18 External Thread Size: 1/4-19 Thread Type: NPTF/BSPT :

http://www1.mscdirect.com/CGI/NNSRIT?PMPXNO=4629538&PMT4NO=26857269

 

[Mace]

I want to know how many engineers are posting in this thread

 

[Coolerman]

I want to know how many engineers are posting in this thread

Only one that I am aware of , however we non-engineers DID answer the original question AND researched to find the correct answers to some non-asked questions.

 

[Mace]

so what thread pitch is the temp sender??

 

[Coolerman]

Just measured two sending units One from my F engine and one from my 2F engine they are identical as far as threads go: 5/16-19 BSPP (NOT Tapered)

(Keep reading....)

Forgot to add that the adaptor that threads into the block has a tapered sealing seat that matches the sending unit.

 

[bsevans]

so what thread pitch is the temp sender??

on my 78, I believe it is M16x1.5

The photos shows the factory temp sender and the unit from VDO for my new gauge cluster

 

[Hugh Heifer]

Very nice VDO set up.

 

[Coolerman]

Ok so no one got my joke? (Or bothered to look it up?)







There is no such thing as a 5/16-19 BSPP


bsevans is correct the fitting size is a 16mm x 1.5 pitch

 

[Hugh Heifer]

Ok so no one got my joke? (Or bothered to look it up?)







There is no such thing as a 5/16-19 BSPP


bsevans is correct the fitting size is a 16mm x 1.5 pitch

Suttle

 

[Hugh Heifer]

In my continued quest for a BSW/BSPT to NPT solution I ran across this. Bottom line. Won't work.

The NPTF male has tapered threads and a 30° inverted
seat. The NPTF female has tapered threads and no seat.
The seal takes place by deformation of the threads. The
NPSM female has straight threads and a 30° inverted
seat. The seal takes place on the 30° seat.
The NPTF connector is similar to, but not interchangeable
with, the BSPT connector. The thread pitch is different in
most sizes. Also, the thread angle is 60° instead of the
55° angle found on BSPT threads.

 

[Hugh Heifer]

Now I did find this (Remembering that BSPP and BSW are the same the gas tank is 1/4 BSPP):

converting 3/8" JIC x 1/4" Female BSPP and at $14.08 it is a steal for the conversion to then run "AN" fittings and tubing from the gas tank.
#9009-06-04

Also:

Just $5.36 to convert 5/16" JIC x 1/8" BSPP (Fuel pump to flared hard line)
#9005-05-02


They are at www.discounthydraulichose.com who have a bunch of this stuff.


It will convert the nipple on the gas tank to SAE 37 degree flare. Now, I know nothing about "AN" fittings (Jegs makes a s*** load and they are cheap and good) I do not know if the "AN" flare fittings are regular SAE 37 or not. I also do not know what the sizing is like (-8AN for instance is Greek to me)

Anyone have a conversion to metric or standard ID/OD sizes for AN?

 

[Hugh Heifer]

Took me some searching but I found this:

AN stands for "Air Force-Navy Aeronautical Standard" and was an aviation fitting standard developed around WWII. The fitting featured a 37 degree mating angle which provided superior sealing compared to the common 45 degree fittings. The fittings also utilized a higher class of thread quality. Eventually the AN fittings saw widespread military use and a multiple manufacturers began producing the fittings, leading to quality problems. The Joint Industries Council (JIC), an industry organization, sought to standardize the specifications on this type of fitting and created the "JIC" fitting standard, a 37 degree fitting with a slightly lower class of thread quality than the military AN version. The SAE went on to adopt the JIC standard as well. As a result JIC or SAE 37 degree fittings are perfectly interchangeable with AN fittings, and while this may not be acceptable for military aviation use, for automotive use there is no downside other than perhaps mismatched color coordination as JIC fittings are not available in the pretty anodize aluminum colors. However this may be a worthy tradeoff considering the JIC fittings are a fraction of the price of their true "AN" counterparts. We mixed and matched in this article to show you their interchangeability.

3 key facts about AN fittings.
Flare angle is 37°, not 45°
Interchangeable with JIC fittings
Divide AN # by 16 to get inches

Good site on AN flares:
FITTING FLAREUP

And now that I have completely hijacked this thread I am off...to bed

 

[Hugh Heifer]

This just came up in discussion. Threads can be confusing. Educate yourselves.

This might be a FAQ

 

[Hugh Heifer]

I want to know how many engineers are posting in this thread

If I did not do it before, here it is now

 

[nspctr1]

on my 78, I believe it is M16x1.5

The photos shows the factory temp sender and the unit from VDO for my new gauge cluster

OH, OH, Oh, how is that cruiser placed on the cluster? is it stamped in? that's cool...

 

[Mace]

The 40 is engraved in the AL dash..

Always loved the look of that style.

 

[Coolerman]

Now I did find this (Remembering that BSPP and BSW are the same the gas tank is 1/4 BSPP):


converting 3/8" JIC x 1/4" Female BSPP and at $14.08 it is a steal for the conversion to then run "AN" fittings and tubing from the gas tank.
#9009-06-04

Also:


Just $5.36 to convert 5/16" JIC x 1/8" BSPP (Fuel pump to flared hard line)
#9005-05-02


They are at www.discounthydraulichose.com who have a bunch of this stuff.


It will convert the nipple on the gas tank to SAE 37 degree flare. Now, I know nothing about "AN" fittings (Jegs makes a s*** load and they are cheap and good) I do not know if the "AN" flare fittings are regular SAE 37 or not. I also do not know what the sizing is like (-8AN for instance is Greek to me)

Anyone have a conversion to metric or standard ID/OD sizes for AN?

Did you actually try the 1/4-19 fitting on the gas tank? I ordered a 1/4-19 male to 1/4 NPT (to adapt the marine fuel filter I bought to the OEM soft lines) and they did not fit at all. After much research I came to the conclusion that the OEM gas tank and hard line fittings are in fact 13mm x 1.5. Talk about unobtainium! If you got that to work please let us know!

 

[Coolerman]

Bump for answer to the last question: Did it fit the tank?

 

[Trollhole]

are you talking about something like this?

I just took the nut off a carb and it screwed right on. This was on an early 55 tank but I believe it is the same fitting.

Nuts and ferrells are still available from Toyota.