Thread pitch for sending unit

GaleForce · 05-31-2014, 11:27 AM

Does anyone know the thread pitch for a standard sending unit, ex. Defi oil temp sending unit. I removed the sending unit from my oil pan spacer and now I need to fill the hole, tee hee hee.

Also, can/should I use loctite on it, or should I use thread tape?

spacer by J M Gale, on Flickr

spacer2 by J M Gale, on Flickr

JARblue · 05-31-2014, 01:57 PM

*edited*

I'm just a noob

1/8" BPST?? http://www.z1motorsports.com/g37_370...oducts_id=2822 ??

I read that liquid thread sealer is preferred over teflon tape.

Mitco39 · 05-31-2014, 04:27 PM

1/8" NPT is very common.

GaleForce · 05-31-2014, 07:31 PM

Quote:

Originally Posted by JARblue

*edited*

I'm just a noob

1/8" BPST?? Coolant temp sensor adapter ??

I read that liquid thread sealer is preferred over teflon tape.

That linked helped. Thanks Jar

GaleForce · 05-31-2014, 07:35 PM

Quote:

Originally Posted by Mitco39

1/8" NPT is very common.

The manual that comes with my Defi gauges states the sending unit is ⅛" PT. I'm trying to find a screw/bolt to fit the hole. When I search for ⅛" pt bolt on the Google, nothing comes up.

Possibly ¼" (28) x desired length.

SouthArk370Z · 05-31-2014, 08:27 PM

Look for a "pipe plug".

Don't use teflon tape unless you know what you are doing - too easy to end up with pieces of PTFE floating around and plugging stuff up. I'd use a very small amount of pipe dope. Keep it away from the end that goes in the engine.

Rangerz · 05-31-2014, 08:30 PM

Quote:

Originally Posted by JARblue

*edited*

I read that liquid thread sealer is preferred over teflon tape.

GaleForce · 05-31-2014, 08:37 PM

Quote:

Originally Posted by SouthArk370Z

Look for a "pipe plug".

Don't use teflon tape unless you know what you are doing - too easy to end up with pieces of PTFE floating around and plugging stuff up. I'd use a very small amount of pipe dope. Keep it away from the end that goes in the engine.

Perfect. You got me on the right track now. Thank you

phunk · 05-31-2014, 08:45 PM

Most of the fuel pressure gauge kits I sent out, I included a 1/8 npt plug in the billet fitting. Only the first few that went out didnt get them. Its not listed as included but I figured I should include them anyway. At any rate, if there was a plug in your billet gauge fitting I sent you, it will probably fit right in there.

SouthArk370Z · 05-31-2014, 09:17 PM

Are y'all sure it's 1/8" NPT/NPTF and not 3 mm (or other metric measure) with metric pipe threads? Just wondering as most of my mechanicin' has been on "English" stuff, not metric.

GaleForce · 05-31-2014, 09:41 PM

Quote:

Originally Posted by phunk

Most of the fuel pressure gauge kits I sent out, I included a 1/8 npt plug in the billet fitting. Only the first few that went out didnt get them. Its not listed as included but I figured I should include them anyway. At any rate, if there was a plug in your billet gauge fitting I sent you, it will probably fit right in there.

Mine did come with one.

Quote:

Originally Posted by SouthArk370Z

Are y'all sure it's 1/8" NPT/NPTF and not 3 mm (or other metric measure) with metric pipe threads? Just wondering as most of my mechanicin' has been on "English" stuff, not metric.

1slow370 · 06-10-2014, 02:19 AM

the defi guages are for sure 1/8-28 bspt, the oem sensor is 1/8-28 bspt many usa made sensors are 1/8-27 npt which is not the same and cannot be interchanged. You can get it to seal and hold but it won't be right.

GaleForce · 06-10-2014, 08:31 AM

Quote:

Originally Posted by 1slow370

the defi guages are for sure 1/8-28 bspt, the oem sensor is 1/8-28 bspt many usa made sensors are 1/8-27 npt which is not the same and cannot be interchanged. You can get it to seal and hold but it won't be right.

Thanks

I found what I needed and got it all sealed up. Thanks to everyone that helped

05-31-2014, 11:27 AM	#1 (permalink)
GaleForce A True Z Fanatic Join Date: Aug 2011 Location: Ontario, Canada Posts: 21,749 Drives: Varis Arising II Rep Power: 51865	Thread pitch for sending unit Does anyone know the thread pitch for a standard sending unit, ex. Defi oil temp sending unit. I removed the sending unit from my oil pan spacer and now I need to fill the hole, tee hee hee. Also, can/should I use loctite on it, or should I use thread tape? spacer by J M Gale, on Flickr spacer2 by J M Gale, on Flickr __________________ >>>GaleForce's Build<<< >>>FaceBook @3GsCustoms<<<>>>Instagram @GaleForce370z<<< Varis Kamikaze-Z

05-31-2014, 01:57 PM	#2 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	edited I'm just a noob 1/8" BPST?? http://www.z1motorsports.com/g37_370...oducts_id=2822 ?? I read that liquid thread sealer is preferred over teflon tape. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \| Last edited by JARblue; 05-31-2014 at 02:04 PM.

05-31-2014, 04:27 PM	#3 (permalink)
Mitco39 A True Z Fanatic Join Date: Aug 2012 Location: Edmonton Alberta Canada Posts: 2,089 Drives: 40th 370z Rep Power: 132	1/8" NPT is very common. __________________ 2007 Chevy Duramax - EFILive Tuned By Me 2010 40th W/ Nav - Boosted Performance - UpRev Tuned By Me The Mrs. Ride -2012 335XI N55 BMW - Cobb Tuned By Me, Built by her My Build --> http://www.the370z.com/members-370z-...39s-build.html

05-31-2014, 08:27 PM	#6 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Look for a "pipe plug". Don't use teflon tape unless you know what you are doing - too easy to end up with pieces of PTFE floating around and plugging stuff up. I'd use a very small amount of pipe dope. Keep it away from the end that goes in the engine. GaleForce likes this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

05-31-2014, 08:45 PM	#9 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,668 Drives: 370 Rep Power: 974723	Most of the fuel pressure gauge kits I sent out, I included a 1/8 npt plug in the billet fitting. Only the first few that went out didnt get them. Its not listed as included but I figured I should include them anyway. At any rate, if there was a plug in your billet gauge fitting I sent you, it will probably fit right in there. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

05-31-2014, 09:17 PM	#10 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Are y'all sure it's 1/8" NPT/NPTF and not 3 mm (or other metric measure) with metric pipe threads? Just wondering as most of my mechanicin' has been on "English" stuff, not metric. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

06-10-2014, 02:19 AM	#12 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	the defi guages are for sure 1/8-28 bspt, the oem sensor is 1/8-28 bspt many usa made sensors are 1/8-27 npt which is not the same and cannot be interchanged. You can get it to seal and hold but it won't be right. GaleForce likes this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

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