Defi D gauges Oil Temp and Oil Pressure are already 1/8.
So they should fit correctly right?
My friend is telling me I need a reducer for them?

 

Defi sensors are 1/8 NPT if you looking for a place for the Oil Press. Remove the factory idiot light sensor under the #1 intake runner and put your defi one there. The block is tapped fron the factory for that sensor at 1/8 NPT, it's a one wire normally open switch (so unplugged the light on the dash will stay out) and the defi warning will make it redundant anyway.

Hope that helps

 

Defi D gauge have no warning.
But thanks.

 

Yea they say that you should do that for the most accurate results... but i wouldn't think twice about it being too heavy (the autometer one) it's very light!

On a side note, keep your eyes open on this thread. I'm going to be cahnging the install, because I don't like the location of the temp sensor.

 

Just and FYI..

The fitting next to the filter is 3/8 PT. I purchased a plug from Mitsu for a couple bucks and measured it on an optical comparator at work.

PT (or BSPT) has a different pitch and a different included angle on the threads than NPT threads.

 

what are the down sides to doing this?

 

I don't think there's enough room to do it that way.

 

I have something to add. I used the GReddy block adapter and it had some disaterous results. A pothole in downtown Chicago ripped my oil filter right off the engine. It sheared the threads that the filter screwed into. Luckily I heard the Defi warning go off as soon as it happened and I shut off the engine.

Be forwarned, DO NOT use the GReddy block adapter if you have any uneven roads! That little mistake cost me $750 to replace the filter housing.

 

What gauges use that huge pressure sender. That thing is big.

 

autometer

 

The manual I have for the Defi BF gauges says that the sensors are 1/8 PT (e.g. BSPT) not NPT...


bolsen: Where where you going to move your temp sensor to, and why?

 

OK guys I just installed my defi bf oil pressure gauge this weekend. My sensor had a 1/4 adapter on the end, so it fit perfectly into the hex bolt which is right above the oil filter (there are two of them, I used the one CLOSER to the filter).

FYI if you are going to attempt this, do yourself a favor and purchase an 8mm hex socket for your 3/8" ratchet. That hex bolt is a total b!tch to remove. Don't forget to teflon tape your adapter/sensor threads.

 

Ok I see the adaptor for the oil pressure...what about the oil temp? I have the Defi Oil Temp gauge...what have you guys used to do this?

 

I would use the *other* hex bolt which is located higher up above the oil filter. To get at it you'd be best to remove the oil filter, which means changing your oil anyhow.

Also for both of these hex bolts there's no NEED to change the oil because only a small bit (1/4 cup perhaps?) will come out.

 

Not sure where, yet.

I haven't had the car running for 9 months now, so I haven't had time to fiddle with it