Fitting Pitch thread. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

McRussellPants · 04-07-2008, 11:15 PM

The wrong fitting sizes get posted alot. These are all I've found.

Water Line Fittings
Block 14x.15
Water Neck 14x1.5
GT Series Turbo 14x1.5

Oil Feed Fitting
Block 12x1.25 Fitting, 12x1.25 to -3 is kinda rare but pegasus can get it.
Ball Bearing Turbo 7/16ths Inverted Flare
Non Ball Bearing Turbo 1/8th NPT.

Power Steering
Return 16x1.5 O ringed
Rack High Pressure 14x1.5 O-ringed
Pump High Pressure 16x1.5 Crush Washer.

Other
Brake Booster Intake Manifold 14x1.5
Oil Block 1/8th BSPT
DEFI Water Temp Sender 1/8TH BSPT (only Juran has right pitch rad hose adapter)
Greddy Intake Manifold Ports 1/8th BSPT.

CAPoweredS14 · 04-07-2008, 11:18 PM

Cool thanks, I actually need this for new power steering lines. And these are for any specific motor?

McRussellPants · 04-07-2008, 11:22 PM

shouldn't be.

HalveBlue · 04-08-2008, 12:27 AM

Where were you earlier today, dammit? I needed to to know the thread pitch on the S14 waterneck. Luckily I go the right adapter.

One thing on the Defi water temp sensor. According to Defi's website it's listed as 1/8 NPT, not BSPT. There may be a difference between imperial and metric gauges, however.

http://www.defi-shop.com/product/met...parts_imp.html

Good thread BTW.

jobestudios · 04-08-2008, 01:06 AM

Nice, I've been wanting to figure out this in a list for a while now, what size line would you recommend running for water line and oil line on a gt series turbo? What about a powersteering setup?

da8o8santaclauz · 04-08-2008, 03:57 AM

anyone know the thread pitch of s13 brake master cylinder?
and
the other thread pitch on the back of the greddy mani aside from the brakebooster vac one? and also the smaller vacs under the mani too hah

Wiisass · 04-08-2008, 01:52 PM

Pretty sure the little vaccuum ports under the greddy mani are 1/8" BSPT.

timlush · 04-14-2008, 07:56 PM

Quote:

Originally Posted by da8o8santaclauz

anyone know the thread pitch of s13 brake master cylinder?
and
the other thread pitch on the back of the greddy mani aside from the brakebooster vac one? and also the smaller vacs under the mani too hah

IIRC, all the brake fittings are 10X1.5.

Someone please correct me if I am wrong.

timlush · 04-14-2008, 08:02 PM

Quote:

Originally Posted by McRussellPants

12x1.25 to -3 is kinda rare but pegasus can get it.

More info on this? I couldn't find it on their site...

edit: I found this
http://www.pegasusautoracing.com/pro...asp?RecId=5936

**ThatGuy** · 04-14-2008, 08:05 PM

Well done Russell.

Thank you for providing this information.

bwake 5 · 04-14-2008, 08:09 PM

man i couldnt find the 12x1.25 to -3an fitting for the oil line block....tried pegasus or whatever and nothing.....i found one that i think might be it on takatamotorsports but it isnt specific.....i need that thing bad

McRussellPants · 04-14-2008, 09:09 PM

http://www.pegasusautoracing.com/gro...=BRAKEADAPTMET

8$

Technically it needs a crush washer.

I just used Teflon Tape.

timlush · 04-14-2008, 10:20 PM

A crush washer from a Nissan drain plug works perfect FYI.

da8o8santaclauz · 04-28-2008, 02:23 AM

Quote:

Originally Posted by timlush

IIRC, all the brake fittings are 10X1.5.

Someone please correct me if I am wrong.

can anyone verify this? i've been getting all kinds of respones, from 10x1.0, 10x1.25, now 10x1.5 etc.

**mrmephistopheles** · 04-28-2008, 09:57 AM

This is a great thread with great info, but it's better off in Tech.

murda-c · 04-28-2008, 09:58 AM

what about small and big o2 sensors?

yarou · 04-28-2008, 01:50 PM

What's the size of these two sensors right here? My old HKS water temp sensor seems to be the same but still possibly different, after tightening the HKS sensor in there it left a few small shavings. It looks dead on though when I compare both the threads

here's the HKS sensor end

Wiisass · 04-28-2008, 04:44 PM

You guys know they sell thread pitch gauges. They're really cheap and they will tell you what pitch anything is. They have them for standard and metric.

Or another way would be go to the hardware store that has a good selection of bolts and nuts. And buy one of each of the different threads you think you will encouter. Then mark these carefully and use them to test the threads. Just don't be stupid and try and tighten them too much or this will not work very well as a way of figuring out threads.

And the brake line fittings look like m10x1, but I'm not 100% sure on that.

And those water fittings, if I remember right, they're M12x1.25.

But again, both of those could be easily measured. Most threads are different enough where you won't run into problems unless you're the type of person that shouldn't really be touching a car anyway.

The worst one is probably the difference between BSPT and NPT. 1/8" NPT is 27 threads per inch. 1/8" BSPT is 28 threads per inch. And you will be able to thread BSPT stuff into NPT holes and vice versa and it will screw up the threads or the fitting, depending on the materials. A lot of the ports on the motors and even aftermarket parts look like they're NPT, but they're really BSPT. So be careful about that one.

But other than those, everything can be measured pretty easily. Or you can use known nuts/bolts to measure stuff as well.

cronux · 04-28-2008, 05:16 PM

here's a strange one, 15/16ths male flare for EGR block off.

timlush · 04-28-2008, 06:00 PM

Quote:

Originally Posted by da8o8santaclauz

can anyone verify this? i've been getting all kinds of respones, from 10x1.0, 10x1.25, now 10x1.5 etc.

Now that you say that, I think it is 10X1.0.

Just search, shouldn't be too hard to find.

burnsauto · 04-28-2008, 08:34 PM

ok....question.

why did nissan/greddy/ etc decide to use BNPT thread pitch? Is that a standard thing to use in japan?

Rizzo · 04-28-2008, 10:16 PM

www.anplumbing.com will have most fittings you wil need.

metric ones are here

http://www.anplumbing.com/shop/index...p=&dept=Metric

nice thread, +1 for you.

Wiisass · 04-28-2008, 11:28 PM

Quote:

Originally Posted by burnsauto

ok....question.

why did nissan/greddy/ etc decide to use BNPT thread pitch? Is that a standard thing to use in japan?

It's British Standard Pipe Thread versus National Pipe Thread. I think it's just a metric thing or something else. I don't know why, but they did. I'm not sure if other Japanese Manufacturers used it as well, but I would assume that they did.

turtl631 · 04-30-2008, 04:07 AM

What's the best way to seal the 16 x 1.5 mm fitting on the power steering pump? Just a regular 16mm crush washer? I looked into Stat-O-Seals and Dowty seals, but they don't come in metric equivalent sizes, and getting something that's "close enough" to 16mm seems ghetto.

Other question: is it advisable to tap a 1/8" BSPT port to 1/8" NPT? I don't like running adapters if possible.

claymans13 · 04-30-2008, 07:22 AM

Quote:

Originally Posted by Rizzo

www.anplumbing.com will have most fittings you wil need.

metric ones are here

http://www.anplumbing.com/shop/index...p=&dept=Metric

nice thread, +1 for you.

FTW, I LOVE that site.fast shipping and better prices that summit or jegs.

burnsauto · 04-30-2008, 11:24 AM

Quote:

Originally Posted by Wiisass

It's British Standard Pipe Thread versus National Pipe Thread. I think it's just a metric thing or something else. I don't know why, but they did. I'm not sure if other Japanese Manufacturers used it as well, but I would assume that they did.

yeah i know it was BNPT...its just a little odd, always made me wonder if they (nissan) got a good deal on oil sending units...but they were BNPT.

Wiisass · 04-30-2008, 11:24 PM

Quote:

Originally Posted by burnsauto

yeah i know it was BNPT...its just a little odd, always made me wonder if they (nissan) got a good deal on oil sending units...but they were BNPT.

BSPT not BNPT.

codyace · 05-01-2008, 01:00 AM

Quote:

Originally Posted by turtl631

What's the best way to seal the 16 x 1.5 mm fitting on the power steering pump? Just a regular 16mm crush washer? I looked into Stat-O-Seals and Dowty seals, but they don't come in metric equivalent sizes, and getting something that's "close enough" to 16mm seems ghetto.

I did mine last night...9/16 Statoseal works perfect

HOWEVER using two of them next to each other will require some very careful trimming of both (don't screw up the rubber o ring thingy) in order for them to sit flush.

Quote:

Other question: is it advisable to tap a 1/8" BSPT port to 1/8" NPT? I don't like running adapters if possible.

Some may have gotten it to work, but I say no. Threads are tooooo close for my comfort. Adapter it is

turtl631 · 05-01-2008, 01:09 AM

Why would you use two of them next to each other?

Wiisass · 05-01-2008, 01:11 AM

Cody, you mean 5/8" statoseal? 5/8" = 15.875mm

And I 100% agree with you on the tapping a BSPT hole to NPT. You would just end up with a mess. They're 1 thread per inch different. Run an adapter or hunt down a sensor with BSPT threads. Or weld on a fitting or drill it out to something bigger and tap it. There are ways to not run adapters.

04-07-2008, 11:15 PM	#1
McRussellPants Nissanaholic! Join Date: Oct 2005 Location: Austin, Tx Posts: 2,168 Trader Rating: (0) Feedback Score: 0 reviews	Fitting Pitch thread. The wrong fitting sizes get posted alot. These are all I've found. Water Line Fittings Block 14x.15 Water Neck 14x1.5 GT Series Turbo 14x1.5 Oil Feed Fitting Block 12x1.25 Fitting, 12x1.25 to -3 is kinda rare but pegasus can get it. Ball Bearing Turbo 7/16ths Inverted Flare Non Ball Bearing Turbo 1/8th NPT. Power Steering Return 16x1.5 O ringed Rack High Pressure 14x1.5 O-ringed Pump High Pressure 16x1.5 Crush Washer. Other Brake Booster Intake Manifold 14x1.5 Oil Block 1/8th BSPT DEFI Water Temp Sender 1/8TH BSPT (only Juran has right pitch rad hose adapter) Greddy Intake Manifold Ports 1/8th BSPT. Last edited by McRussellPants; 04-14-2008 at 10:48 PM..

04-08-2008, 01:06 AM	#5
jobestudios Zilvia Junkie Join Date: Sep 2005 Location: Bellingham Posts: 349 Trader Rating: (1) Feedback Score: 1 reviews	Nice, I've been wanting to figure out this in a list for a while now, what size line would you recommend running for water line and oil line on a gt series turbo? What about a powersteering setup? __________________ -Jackson.Vaughn.Photography-

04-08-2008, 01:52 PM	#7
Wiisass Zilvia Junkie Join Date: Aug 2002 Location: Philly Posts: 486 Trader Rating: (0) Feedback Score: 0 reviews	Pretty sure the little vaccuum ports under the greddy mani are 1/8" BSPT. __________________ TIP Engineering R/T Tuning Drift and RWD Sport DriftAssNation

04-14-2008, 08:05 PM	#10
ThatGuy Admin Asshole Join Date: Mar 2002 Location: Retired Age: 45 Posts: 20,394 Trader Rating: (0) Rides Gallery: ThatGuy Feedback Score: 0 reviews	Well done Russell. Thank you for providing this information. __________________ "Speak softly,..." -Pres. Teddy Roosevelt "Be polite, be professional, ..." -Gen. James Mattis

04-28-2008, 09:58 AM	#16
murda-c Post Whore! Join Date: Jan 2007 Location: Montgomery County, MD Age: 36 Posts: 3,198 Trader Rating: (1) Feedback Score: 1 reviews	what about small and big o2 sensors? __________________

04-07-2008, 11:18 PM	#2
CAPoweredS14 Zilvia Member Join Date: Feb 2007 Location: League City Age: 40 Posts: 209 Trader Rating: (0) Rides Gallery: CAPoweredS14 Feedback Score: 0 reviews	Cool thanks, I actually need this for new power steering lines. And these are for any specific motor?

04-07-2008, 11:22 PM	#3
McRussellPants Nissanaholic! Join Date: Oct 2005 Location: Austin, Tx Posts: 2,168 Trader Rating: (0) Feedback Score: 0 reviews	shouldn't be.

04-08-2008, 12:27 AM	#4
HalveBlue Zilvia FREAK! Join Date: Mar 2004 Location: I'm somewhere where I don't know where I am! Posts: 1,549 Trader Rating: (0) Feedback Score: 0 reviews	Where were you earlier today, dammit? I needed to to know the thread pitch on the S14 waterneck. Luckily I go the right adapter. One thing on the Defi water temp sensor. According to Defi's website it's listed as 1/8 NPT, not BSPT. There may be a difference between imperial and metric gauges, however. http://www.defi-shop.com/product/met...parts_imp.html Good thread BTW.

04-08-2008, 03:57 AM	#6
da8o8santaclauz Leaky Injector Join Date: Sep 2005 Location: Hawaii Posts: 127 Trader Rating: (3) Feedback Score: 3 reviews	anyone know the thread pitch of s13 brake master cylinder? and the other thread pitch on the back of the greddy mani aside from the brakebooster vac one? and also the smaller vacs under the mani too hah

04-14-2008, 08:09 PM	#11
bwake 5 Zilvia Member Join Date: May 2007 Location: victoria tx Age: 36 Posts: 256 Trader Rating: (0) Feedback Score: 0 reviews	man i couldnt find the 12x1.25 to -3an fitting for the oil line block....tried pegasus or whatever and nothing.....i found one that i think might be it on takatamotorsports but it isnt specific.....i need that thing bad

04-14-2008, 09:09 PM	#12
McRussellPants Nissanaholic! Join Date: Oct 2005 Location: Austin, Tx Posts: 2,168 Trader Rating: (0) Feedback Score: 0 reviews	http://www.pegasusautoracing.com/gro...=BRAKEADAPTMET 8$ Technically it needs a crush washer. I just used Teflon Tape.

04-14-2008, 10:20 PM	#13
timlush Zilvia FREAK! Join Date: Aug 2005 Location: Louisville, KY Age: 40 Posts: 1,169 Trader Rating: (12) Feedback Score: 12 reviews	A crush washer from a Nissan drain plug works perfect FYI.

04-28-2008, 01:50 PM	#17
yarou Zilvia Addict Join Date: Sep 2006 Location: Bay Area, CA Posts: 661 Trader Rating: (8) Feedback Score: 8 reviews	What's the size of these two sensors right here? My old HKS water temp sensor seems to be the same but still possibly different, after tightening the HKS sensor in there it left a few small shavings. It looks dead on though when I compare both the threads here's the HKS sensor end __________________ jumbosandbox.blogspot.com

04-28-2008, 04:44 PM	#18
Wiisass Zilvia Junkie Join Date: Aug 2002 Location: Philly Posts: 486 Trader Rating: (0) Feedback Score: 0 reviews	You guys know they sell thread pitch gauges. They're really cheap and they will tell you what pitch anything is. They have them for standard and metric. Or another way would be go to the hardware store that has a good selection of bolts and nuts. And buy one of each of the different threads you think you will encouter. Then mark these carefully and use them to test the threads. Just don't be stupid and try and tighten them too much or this will not work very well as a way of figuring out threads. And the brake line fittings look like m10x1, but I'm not 100% sure on that. And those water fittings, if I remember right, they're M12x1.25. But again, both of those could be easily measured. Most threads are different enough where you won't run into problems unless you're the type of person that shouldn't really be touching a car anyway. The worst one is probably the difference between BSPT and NPT. 1/8" NPT is 27 threads per inch. 1/8" BSPT is 28 threads per inch. And you will be able to thread BSPT stuff into NPT holes and vice versa and it will screw up the threads or the fitting, depending on the materials. A lot of the ports on the motors and even aftermarket parts look like they're NPT, but they're really BSPT. So be careful about that one. But other than those, everything can be measured pretty easily. Or you can use known nuts/bolts to measure stuff as well. __________________ TIP Engineering R/T Tuning Drift and RWD Sport DriftAssNation

04-28-2008, 05:16 PM	#19
cronux Zilvia Junkie Join Date: Oct 2006 Location: wI Posts: 300 Trader Rating: (0) Feedback Score: 0 reviews	here's a strange one, 15/16ths male flare for EGR block off. __________________

04-28-2008, 08:34 PM	#21
burnsauto Post Whore! Join Date: Dec 2006 Location: 717, PA Age: 39 Posts: 3,324 Trader Rating: (6) Rides Gallery: burnsauto Feedback Score: 6 reviews	ok....question. why did nissan/greddy/ etc decide to use BNPT thread pitch? Is that a standard thing to use in japan? __________________

04-28-2008, 10:16 PM	#22
Rizzo Join Date: Dec 2006 Location: central illinois Posts: 49 Trader Rating: (0) Feedback Score: 0 reviews	www.anplumbing.com will have most fittings you wil need. metric ones are here http://www.anplumbing.com/shop/index...p=&dept=Metric nice thread, +1 for you.

04-30-2008, 04:07 AM	#24
turtl631 Zilvia Addict Join Date: Aug 2004 Location: Milwaukee WI Posts: 900 Trader Rating: (3) Feedback Score: 3 reviews	What's the best way to seal the 16 x 1.5 mm fitting on the power steering pump? Just a regular 16mm crush washer? I looked into Stat-O-Seals and Dowty seals, but they don't come in metric equivalent sizes, and getting something that's "close enough" to 16mm seems ghetto. Other question: is it advisable to tap a 1/8" BSPT port to 1/8" NPT? I don't like running adapters if possible.

05-01-2008, 01:09 AM	#29
turtl631 Zilvia Addict Join Date: Aug 2004 Location: Milwaukee WI Posts: 900 Trader Rating: (3) Feedback Score: 3 reviews	Why would you use two of them next to each other?

05-01-2008, 01:11 AM	#30
Wiisass Zilvia Junkie Join Date: Aug 2002 Location: Philly Posts: 486 Trader Rating: (0) Feedback Score: 0 reviews	Cody, you mean 5/8" statoseal? 5/8" = 15.875mm And I 100% agree with you on the tapping a BSPT hole to NPT. You would just end up with a mess. They're 1 thread per inch different. Run an adapter or hunt down a sensor with BSPT threads. Or weld on a fitting or drill it out to something bigger and tap it. There are ways to not run adapters. __________________ TIP Engineering R/T Tuning Drift and RWD Sport DriftAssNation