After market gauge install questions.
 

I bought some new gauges the other day and i am running into some issues.First i did use the "search" option and even book marked a page or two.Most people were saying use the fittings near oil filter is,a "bell" or something.I dont have a bell on my 79.So if anyone has done this to there Sa let me know what you did.

any one?

The oil pressure sender looks like a mushroom, but the 79s don't have one. Tap the banjo bolt head on the line that goes to the lower rear iron of the engine.

I havent done it, But I'm going to adventure to say that if you purchased a Brass T fitting and put in between the oil filter pedestal and the housing you could get an oil psi reading that way.

Yes, ReSpeed sells and adapter block that sits under the oil filter for just that purpose.

thanks ill look it up

i have the adaptor block that RB sells that my mechanical oil pressure gauge is connected to, but it was already there. get which ever is the cheapest.

how much?I quess thats the only way?

darn that part cost more then my gauges!

oil pressure:
http://img.photobucket.com/albums/v3...Picture473.jpg
http://img.photobucket.com/albums/v3...Picture472.jpg

water temp:
http://img.photobucket.com/albums/v3...r/DSC04955.jpg

you are a god!Did you have to tap anything?Is that fitting special order?

just went out to my car,and yes it looks like i have to drill and tap.im scared to do that,lol but thanks for posting pics.was it hard to do?:icon_tup:

i have seen a banjo bolt thats tapped for sale b4 but they wanted alot for it. its not that hard to do just drill the straight and run the tap in straight and your set!

oil pressure: drill and tap with 1/8

behind water temp housing: wont work with GSL-SE. just tap the existing hole with 3/8

i have done what wacky did with the banjo easey as..
my water temp got tapped bellow the thermostat on the water pump housing.

The tapped banjo bolt used to be available as a test fitting, but it was clearly made of that special Mazda metal, bygodexpensium.

I used the RB type 2 gauge block (the blue anodized one). Not cheap, but I liked the way it looked, and I was after oil pressure and temp, which would be hard to do by tapping the banjo.

I have a used RB type I gauge block (the square silver one) that I wouldn't mind selling, if you want to go that route. PM me if interested. You'd need new o-rings for it.

We merged the oil block with our pedestal early this year. It is known as the Version2 pedestal.

You can tap the banjo bolt in order to get the pressure (1/8 NPT) but if you are also looking to hook up a mechanical temp probe (3/8 NPT) you will need an adapter.

-billy

http://mrcmfg.com/catalog/images/pedestal.JPG

I drilled and tapped the banjo bolt

:D

I have to drill and tap my banjo bolt later today for the stock sender. Yay for 1/8"-28 BSPT.

That's a nice clean looking solution, Sir William. One piece is better than two.

Make sure people know they'll need a shorty wrench and tough knuckle skin for that back nut.

Thank you sir.

I have some MAC brand wrenches with angled heads. The 10MM wrench is only about 4" long. Works wonders.

-billy

Ok i have some more issues.The fitting screws into the water pump ok but the probe wont tighten up.The other adapter fitting tightens up the probe,but wont fit housing,Sorry for crappy pics

bump cars apart!Help!

If you're trying to use a standard NPT thread in the Mazda OEM threads, they won't line up. The car has metric threads. If you tapped your own NPT thread and the adapter won't tighten up, you tapped the NPT threads too deep.

i did not tap anything.The threads on the gauge itself screw into housing with no problem.I think second pic.The probe stays loose.I i screw on adapter fitting the probe gets tight"no leaks",but wont thread into housing third pic.:scratch: