Since autometers sending units are a different size than stock what does everyone use? I've read about heat soak causing a bad reading. Any information is greatly appreciated.
Aftermarket oil pressure gauge install.
- Thread starter Fletch124
- Start date
i used the sendign unit that came with the megan racing guage. it works for the most part. im not sure on how accurate it is though :-\
as far as the fitting goes, i hear some people relocate it with a 1/8 bpt? fitting and then run a stainless steel line and mount the sending unit elseware. i just put mine in my block because it fit.
as far as the fitting goes, i hear some people relocate it with a 1/8 bpt? fitting and then run a stainless steel line and mount the sending unit elseware. i just put mine in my block because it fit.
I tend to like the mechanical autometer oil pressure gauges. No heatsoke probs but be sure to keep that vinyl hose away from anything metal so it doesnt rub a hole in it.
All the Pipe thread fittings on the block are BSP (British Standard Pipe) all of the domestic gauges sold have NPT (National Pipe Thread) They differ from each other in a bunch of little ways.
The major difference from each other is their "tooth valley" included angle and the fact that NPT has a sharp tooth tip and a flat valley in the threads. The BSP has a radius on the tooth tip and in the tooth valley. The other difference is the tooth valley included angle for NPT is 60deg as with all SAE and Metric threads. BSP threads have a tooth valley included angle of 55deg. This defference alone isnt enough to make the threads not work, on top of this they had to go and make the thread pitch (TPI threads per inch) just different enough to make them not work with each other. Here is an example
__NPT------BSP
1/8-27----1/8-28
1/4-18----1/4-19
3/8-18----3/8-19
1/2-14----1/2-14
I have the BSPT male to NPT female adapter, I have never sold them before but let me check what I have into them and I will get back with a price if your interested. LMK.
Also I can get copper line to replace the vinyl line if your interested.
If your interested in keeping your stock gauges working you can remove one of the plugs on the side of the block and hide the new gauge in the glove box or somewhere else.
The major difference from each other is their "tooth valley" included angle and the fact that NPT has a sharp tooth tip and a flat valley in the threads. The BSP has a radius on the tooth tip and in the tooth valley. The other difference is the tooth valley included angle for NPT is 60deg as with all SAE and Metric threads. BSP threads have a tooth valley included angle of 55deg. This defference alone isnt enough to make the threads not work, on top of this they had to go and make the thread pitch (TPI threads per inch) just different enough to make them not work with each other. Here is an example
__NPT------BSP
1/8-27----1/8-28
1/4-18----1/4-19
3/8-18----3/8-19
1/2-14----1/2-14
I have the BSPT male to NPT female adapter, I have never sold them before but let me check what I have into them and I will get back with a price if your interested. LMK.
Also I can get copper line to replace the vinyl line if your interested.
If your interested in keeping your stock gauges working you can remove one of the plugs on the side of the block and hide the new gauge in the glove box or somewhere else.
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http://www.egauges.com/vdo_acce.asp?Subgroup=BSP_OTOD
^ Nice little piece there. With that you can unhook the stock oil pressure sender, screw that in, then screw the sender for the new oil pressure gauge, and also screw in a sender for an electric oil temp gauge. The same place also sells a single one too for much less
.
^ Nice little piece there. With that you can unhook the stock oil pressure sender, screw that in, then screw the sender for the new oil pressure gauge, and also screw in a sender for an electric oil temp gauge. The same place also sells a single one too for much less
.
Fwiw with a little effort the stock gage can be calibrated to be dead on throughout it's range even if the dial resolution is limited. All that's needed is to gain access to the adjustments inside the sender then seal it back up when done. Not that hard to do.
jetjock said:
With my experience with small block chebbies and SBF's, I was able to save the bottom end a couple of instances because I could see the oil pressure gauge flutter ever so slightly, I dont know if the electric gauge has a 'signal filter' or not thats why I have a fascination with aftermarket mechanical gauges. But if you were to go the 'sleeper' route, recalibrating the stock gauge is a great idea. Good thinking JetJock! :naughty:
Yes, unfortunately the stock system is a bimetal-bimetal design. While accurate it's not very fast acting. It'll respond to pressure changes within a second or two but needs about 10 seconds to stabilize at the new value. I'm willing to accept that limitation as long as it's accurate. The upside is the design is unaffected by voltage changes, something that can't be said about all electric aftermarket setups. I also get to keep the idle speed control trim it provides but people who've gone solely to aftermarket don't seem to miss it.
Oh really? Is that what the signal is for? Where did you dig this little nugget up? An old 850 series manual or something?jetjock said:
+1
You'd be surprised at what ECU nuggets I know, many of which I keep to myself
It might have been from the one of the 850 series (too lazy to check) but for sure the TCCS manuals have it. If I'm not mistaken autoshop101 mentions it somewhere too.
Hows the wife btw? Getting close yes?
It might have been from the one of the 850 series (too lazy to check) but for sure the TCCS manuals have it. If I'm not mistaken autoshop101 mentions it somewhere too.
Hows the wife btw? Getting close yes?
I haven't been on for a few weeks. I missed this place.
She has arrived, early. Healthy though. I just missed her. I was back in the desert.
She has arrived, early. Healthy though. I just missed her. I was back in the desert.
Thanks for all the information. Wait so we can put mechanical gauges on, explain please how that works and to install.
Adjuster
Supramania Contributor
I want the peak pressure memory of the electronic units
But I have not found a used omori gauge with green illumination, black face and yellow needle. (Custom ordered the EGT and boost gauges, but now they don't do that anymore...)
There are a few digital ones that intrest me too. (Can be switched between sensors for example, so one gauge can be the readout for a few sensors.)
There are options for Wideband, oil temp, oil pressure, IAT, EGT etc.
Right now, I'm not spending any more money on the Supra... too much stuff I want for the FZ1...
But I have not found a used omori gauge with green illumination, black face and yellow needle. (Custom ordered the EGT and boost gauges, but now they don't do that anymore...)
There are a few digital ones that intrest me too. (Can be switched between sensors for example, so one gauge can be the readout for a few sensors.)
There are options for Wideband, oil temp, oil pressure, IAT, EGT etc.
Right now, I'm not spending any more money on the Supra... too much stuff I want for the FZ1...
i have yet to find an electrical oil pressure gauge i like. either that dont work for crap or the graduation is too high.
i have since moved to a mech oil pressure gauge and very happy. its hooked up on a stainless line. under no circumstance would i use that crappy plastic line for it.
oh, and autometer makes an adapter for npt to bspt
i have since moved to a mech oil pressure gauge and very happy. its hooked up on a stainless line. under no circumstance would i use that crappy plastic line for it.
oh, and autometer makes an adapter for npt to bspt