Manifold plug thread pitch needed (1 Viewer)

[love2fly]

Just looking for the information of the thread size that fits the side of my 1982 FJ40 manifold. My thread pitch gauge does not have this pitch.
I believe this is a 16mm but not sure if its a 2 or 4 thread pitch.
I am prepping to install a hose barb in place of the plug for the installation of a dash vacuum gauge.
Anyone know the pitch or even have an old manifold hose barb.

Thanks

 

[Dizzy]

Vintage Teq might have a simpler vac kit @ToyotaMatt

Earlier manifolds have a plug on the firewall side. The internals of the earlier (mine are Federal '75) PCV/VCV barb have what looks like a flame arrestor which might be a vac drop akin to an orifice - I imagine that you could drill it out, but I don't know what is in there.

In a past discussion about the oil sender unit, or BVSV, I forget, Toyota used British Pipe Threads. Metric pipe threading is limited to the spark plugs.

 

[love2fly]

Dizzy I believe you are right, they did use British Pipe thread standards, I to completely forgot about that.
I will focus on that.
Thanks much

 

[Skeet]

I used this:

Pair 1/8" BSP BSPT Pipe Thread Allen Head Plug Chrome Plated Brass | eBay

Find many great new & used options and get the best deals for Pair 1/8" BSP BSPT Pipe Thread Allen Head Plug Chrome Plated Brass at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[love2fly]

Appreciate that but I am looking for a hose barb whit the same thread size as the plug I removed. I will try Ebay, Thanks

 

[ToyotaMatt]

Appreciate that but I am looking for a hose barb whit the same thread size as the plug I removed. I will try Ebay, Thanks


View attachment 2178363 View attachment 2178364

Another option is to install one of these in you manifold , and use as a splitter or in place of a delete plug in some cases

also , i offer a Very simple threaded Plugs and Fittings FREE Modifications Free Solution , that incorporates only NOS Plug and Play Parts ..............

please See attached Link to My NOS OEM TOYOTA Parts Vacuum Gauge SST Hose and Fittings install Kit ...........

this Kit is custom tailored to install any common vacuum gauge in as little as

5 Metric Minutes !

NOS OEM TOYOTA Genuine Parts 3mm VACUUM HOSE KIT w/ metal Union or Y / T Fitting 04000-11120 " AKA Vacuum Gauge Install Kit "" - VintageTEqParts.com

NOS OEM VACUUM HOSE & Metal Union or Fitting KIT - AKA Perfect Vacuum Gauge Install Kit , Due...

vintageteqparts.com

 

[ToyotaMatt]

Also , TOYOTA did not use BSP thread pitches , all toyota threads regardless of type or location are J.I.S. or " Japanese Industrial Standard "


My Radiator Drain Tube kit are made By hand By me using a JIS Tap and Dye set i had to source from Japan , a BSP tap and die produced the incorrect
results needed for a FACTORY OEM type end product ...........


this has been my experience regarding all that

Genuine OEM SKUNK-WORKS Parts Radiator Drain Tube & Petcock F & 2F engines J.I.S. Tread Pitch FJ40, FJ55, FJ60 96431-03873-R - VintageTEqParts.com

Reproduction radiator drain tube & petcock 96431-03873 Correct JIS thread Pitch & Diameter Fits 1964-1987 F & 2F engines ,...

vintageteqparts.com

 

[love2fly]

Thanks for the offer but I do not have any available opens for one of them on the manifold that small.
You maybe right about the Japanese Industrial Standard
Thanks

 

[Steamer]

Also , TOYOTA did not use BSP thread pitches , all toyota threads regardless of type or location are J.I.S. or " Japanese Industrial Standard

OMG Matt. you blew my mind. I thought I had all these pipe threads figured out on my rig. Never heard of JIS threads before.
Doing some quick research just now, it seams JIS and BSPT are identical "thread wise". It seems the JIS tapered have 30 deg angled seats on the ends.
Here's where I got my quick look info. Third box down on the page. "THREADS"
Gotta dig into this some more.

 

[71FFJ40]

Brass Male BSPT x Hose Barb - Cut and Couple

Brass Male BSPT x Hose Barb Fitting Size:

www.cutandcouple.com

If the thread on the manifold plug measures 16mm the equivalent bspt would be 3/8" (15.8mm).
BSPT and JIS (NT) threads are identical and interchangable.The only difference is a 30* chamfer on the male end and a 30* chamfer on the seat of the female thread-neither of which is going to make a difference in the manifold application.No JIS taps or dies needed....just use some teflon tape or thread sealant on the thread and it will be fine.

 

[love2fly]

Found these fittings last night at the local hardware store. The bushing installs into the manifold only about four thread turns. It would work with some sealer but I would really like yo get at least 9-10 thread turns for a better seal. 3/8" MIP x 1/4" FIP
Will check out that Brass Male BSPT x Hose Barb.
Thanks

 

[rkymtnflyfisher]

Is this what you're searching for? Pulled it from an intake manifold just now.

 

[love2fly]

Yep that maybe the monster. Looks as that only had 3-4 threads holding that in also .
I did find a few on line thanks to the help of you guys.

Amazon product ASIN B015E2NL36

Straight 6MM ID Barb x 3/8 BSPT British Male Fitting Brass Water Oil Gas Air | eBay

Straight 6MM ID x 3/8 BSPT Barb Male Fitting Brass Water Oil Gas Air FasParts. Thread 3/8 BSPT BRITISH TAPERED R Male. resistance is desired. Product Category Hose Barb to Male Thread Straight Fitting.

www.ebay.com

 

[rkymtnflyfisher]

Where do I mail it?

 

[love2fly]

PM sent to rkymtnflyfisher

 

[Dizzy]

That won't work, he is busy practicing the highest level of his art, wading in a half frozen Montana river of undisclosed identity.

 

[Hugh Heifer]

Lengthy discussion about thread pitch here:

Sending units?

Who knows the correct size and thread pitch for the Oil Preasure and Water Temp sending units on a 2F. Just to clarify i'm looking for the size of the hole on the block not the sending units themselves Thanks N

forum.ih8mud.com

 

[love2fly]

Nipple plug on order -