Just did this today. Easy peasy and gets temps far quicker than when i had it reading from the pan drain hole.

Nice write up, now only if I can get motivated to put my banjo bolts on.

I am not sure why the S1 would have a different spec than the S2, but according to my shop manual you are off by at least 20ft/lbs here.

I did 24ftlbs as you stated here and had some leaking. Went back to the shop docs and saw that it is actually recommending between 40-50ftlbs.

Reference from S1 Workship Manual

Last week i did the banjo bolt mod for my prosport stepper motor pressure gauge and sensor. While i was racing my car over the weekend i noticed the needle was erratic. Even dropping to 0 and often going off the clock. Even on the strate. I assume this is not accurate as the back light flushed occasionally and other random stuff like that. Also the dummy pressure gauge in the cluster doesn't move . Has any one else seen erratic pressures when on track with the sensor on the front case banjo bolt? any idea if it is a dodgy sensor?


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Make sure it's grounded well.....

I wouldn't think with normal oil level...on the straight that you will get pressure dropout

At 1.6G on race slicks in a long L corner....all bets are off :( (Cost me a front stat gear bearing)

Did you get the dry hump yet? :p:

Working on it :)

Did you use teflon tape? If so, you used too much. Senders ground through the threads as well as the ground lead (black wire). If your ground lead (black wire) has a resistive connection, and the threads aren't making good contact to the banjo bolt, it will cause your gauges to go bananas.

Haven't checked this thread in a long time, good to see other people doing it too!

Thanks for the correction. It has been so long since I made this that I don't remember were I got my number from, but I thought it was the FSM... guess not

It could be a bad ground, or the gauge may be toast. Makes me lean toward bad wiring if the light on the gauge is going on and off

thanks all. ill go over all the wiring and check everything


Posted from Rx8club.com App for Android

more than double. the Corksport only comes with one, not a pair.

just as an update, I ordered some of these from RX8 Performance on November 11 and still no banjo bolts. Sent an email to them and will follow up with a call.

That's been quite awhile,I had mine within a week of ordering

try calling him. I have been ordering these from him for almost a year now for my customers. I love them and most of his products. I know there was bad blood around in the past but nothing a quick call doesn't fix.

I torqued my bolts to 30lbs. and ALWAYS replace the crush washers with new ones and save yourself the headache later on.

I talked to him over the phone. He said something happened at the post office and they were lost. He is sending me another set but haven't gotten those yet. Hopefully i will finally have them this coming week.

Is there any preference on where to install the temp sensor and where to install the pressure? like is the temp going up at the cooler and pressure at the block?

I used the in line to the oil cooler for temps and the service port just above the rear plugs for the
pressure.

Paimon has a great DIY , check it out.


What i would like to know is, what are other series 2 owners using prosport gauges
getting for oil pressure #'s at idle when warm.

Checked the mail yesterday. Must have been delivered yesterday. Never got the one he sent before.

Hey guys,

First time poster on the US forum, pretty active on the aus forum down here. :wavey:

Been working out how to get these banjo bolts sorted and haven't found much info regarding the temp sensor for my defi gauges.

The temp sensor will be within the return line from the oil cooler.

The temp sensor sits quite deep within the oil line and was wondering if this is a bad thing and i should use a small nut on the thread and bring it out a bit?

Thanks:)

You will need to space it. What I have done is used a 1/4"NPT adapter and bored out the banjo bolt on the lathe and re tapped it. The sensor now sits away from the oil feed hole

Ahh ok, i ended up using 3 washers to bring it out of the feed hole.
Only slightly visible so hopefully it isn't impacting too much, car has been running fine since.
However I'm now paranoid watching temps haha

Hi Guys
Today I replaced my prosport oil pressure gauge with a 0-150 PSI Auto Meter mechanical gauge that takes the pressure form the front cover.
When I start the motor the pressure goes up to 150PSI and over a couple of min irt drops down to around 25-30 PSI.
But then when I free rev it, it will go from 30PSI up to 150PSI as the revs increase.
Any idea on why it does this?
Oil still cold and too thick?
Thermostats still closed on the coolers?

Cold oil = high pressure
Higher RPM = higher pressure

Shouldn't be 150 psi though...the relief should open before 95. Where do you have it plumbed?

It is plumbed into the banjo bolt on the front cover. so just after the pump. As the relief valve is on the other end of the oil system maybe when everything is cold it just backs up the pressure?
The car was just warming up in the garage so I could move it in the drive way so never had a chance to get hot but the water temp go up to the normal running temp.

my prosport gauge showed the same thing on start up. thought it may have been faulty.