Looking for an-npt fitting /adapter
 

-8 an female to 1/8 npt female, Lots of googling and havent been able to find one

That would be a unique combo (1/2 to 1/8 npt)
Suggest 2 possibilities
AN-8 Cap then drill and tap to 1/8 NPT (may have to do some regrinding of the NPT to make it fit
AN-8 F to 3/8 NPT M to 3/8 NPT F to 1/8 NPT F

What are you trying to do?
They do make AN-8 M to 1/8 NPT to AN-8 F

I have the usual little mech gauge stuck in the front port, I want to mount a sender for a pressure gauge on the dash at the far end where the cap is.(yellow circle)


https://cimg5.ibsrv.net/gimg/www.off...827ba602da.jpg
https://cimg8.ibsrv.net/gimg/www.off...e42428682c.jpg

Send me the #8 cap and I will drill & tap it for you.

ps- make sure your gauge won't fatigue and start leaking. I don't like mechanical gauges mounted on the engine or in the engine compartment. It's a personal thing.

You can move the frt T that is drilled/tapped for 1/8Npt to the rear. :)

Edit in: Ooops. Re-read what you typed. You can get that T with a drilled/tapped 1/8"hole like the frt one,or you can drill/tap it yourself, or have someone like Mark at BAM do it as he graciously offered. :)

If you get the fitting from BAM it will be right. Do agree, don't like fuel mechanical gauges feed by tubing to a gauge

Can also remove your current cap and install one of these and reinstall cap

https://www.motamec.com/motamec-an-j...y-adapter.html

Link is British but they make them here as well

Here you go, replace the T with a 90,so even better,this way you can lose that cap.

https://www.summitracing.com/parts/a...2273/overview/

https://static.summitracing.com/glob....jpg?rep=False

I hope you are using an electric sender and gauge and not running a poly line to mechanical gauge in the dash.

aeroquip and fragola have what you want , or send it to mark

Think I found it....

Fragola Performance Systems Flare Caps 492928-BL

Yup, good find.

I'm off the hook

Get a local hose company make you some nice high pressure lines.

Totally different situation than running fuel to your helm. I was given 2 mechanical fuel gauges 10 yrs, just never had the balls to run fuel to my helm after having a poly water pressure line leak. They are still on the shelf.

Not how you make hydrogen fuel. :) yeh, joking,

Run an isolator for a mechanical gage so fuel isn't plumbed under the dash/helm.
Leaking boost pressure or water isn't as dangerous or flamable as fuel is.

https://www.summitracing.com/parts/atm-5282/overview/

https://www.autometer.com/high-press...r-300-psi.html

Instructions

This isolator is installed in the pressure line between the carb or fuel pump (where you normally pick up fuel pressure) and the fuel pressure gauge. It has a diaphragm that prevents fuel from reaching the gauge (inside the driver's compartment). The driver's side of the isolator and the line to the gauge are filled with a fluid that transfers the pressure to the gauge.