I just installed Defi D-gauges which are 1/8NPT using his BSPT adapters. Used a few wraps of silicone tape on each of the threads and tightened them down good and no leaks.

 

Well, I totally stand corrected if your Greddy and Defi gauges have NPT senders. The important part is that you guys know what thread your sender is when you order the adaptors!

Evan

 

+1

I received my adapter today -- thank you!

I have a couple of questions about the adapter, though. First, how much of a difference does it make if the plug isn't exactly parallel? I measured a 16mm diameter on the bottom thread, and 17mm at the top. I'm sure that's fine.

One thing that does concern me is the NPT threads. The sender threads in perfectly. However, because the threads are so deep (i.e. threaded far into the adapter), the sender threads all of the way in. I thought that you want to make sure that you have a good interference, thus you only want the sender to be able to thread in part way.

When you crank down on the sender nut to tighten it down, that should create the seal for an NPT thread. In this case, if you tighten it all the way, the only reason why it seems tight is that you've hit the end of the threads. I think that this is going to leak unless I use teflon tape, which shouldn't be necessary on an NPT thread.

Does this make sense? Am I way off base here?

 

If your using his BSPT adapters and your senders are NPT I strongly recommend using silicone tape. Taper the tape so that it creates a wedge from the bottom to the top of the sender and make sure you wrap it the opposite way that it threads.

 

I am using the NPT adapter.

 

Matz - the plug should not be paralel. NPT and BSPT are both tapered threads. Your sender will also be tapered.

You must use Teflon tape on all NPT threads. THe idea of NPT not needing thread sealant sounds good on paper, but it never works. Use 2-3 wraps of teflon tape. The threads will immediately cut through the tape and create your ground connection.

Using Teflon you will have no leaks. I do not reccomend using any sender we sell without Teflon tape.

Evan

 

You're absolutely right. I was thinking BSPP. My bad.

Ok, I will give it a shot with Teflon tape, then. Thanks!

 

looks like your wrong.

Thats because 2kjettaguy was CORRECT about GREDDY using BSPT and NOT NPT.
I got off the phone with Evan after ordering two adapters and found out that both fit very well. Only difference is that NPT seems loose even at end and BSPT fits nice and tight at the edge of the hold. 1/8 NPT threads all the way in, but 1/8 BSPT thread holds the sender tight right before the head of the sender by 2-3 turns. There was a reason why Greddy sender was tapered, its a much secure fitment using 1/8 BSPT than 1/8 NPT.
although you can tape up the sender to fit a 1/8 NPT to prevent leakage, I prefer taping 1/8 BSPT for others who will be using the greddy unit.

thanks Evan, you were right the first place..
ill double check again after the install.

 

Just ordered a few parts from your site..please let me know when shipped...thanks

Question: Does the LED replacement bulbs you sell on your site fit the autometer gauges?

the stock bulbs for autometer/ with color condoms are pretty dull...not bright enough

thanks

 

Hey, sorry for the delay.

I need to know your name so that I can check on your order. If it has already shipped you will have recieved a shipment notification via email.

The 194 LEDs we sell will fit with Autometer gauges. However, I would not reccomend them. Automer gauges use side lighting, not backlighting like the SW gauges or VDO vision. That means that the lighting needs to travel around the face of the gauge in order to light it up. LEDs offer a direct beam of light and are not powerful enough from the sides to light sidelit gauges.

Honestly, my suggestion would be to get away from the Autometer stuff. Without going to their more expensive lines you can't get a half decent backlight using any bulb.

Evan

 

thanks

PMed all my info