Fuel Pump & Oil Pressure Questions

[@TDC]

Hey guys I have a couple questions. First I am going to be installing an Evo 8 fuel pump in my 90 1g dsm and I know that the fuel pump harness in the 1g's is different and will not fit into the Evo pump. So my question is if I buy a Walbro install kit from ExtremePSI will this be enough to get my Evo fuel pump into my 1g? Or could I just use STM's fuel pump rewire kit without using a Walbro kit? I will post links to the kits I am looking at. I am also trying to find a write up for an Evo 8 fuel pump in a 1g but cannot find anything. So if anyone knows where to find one please post a link. Next I am going to be installing an Autometer C2 short sweep electric boost gauge. I was wondering if I could screw the sender into any different ports of the oil filter housing? Or will I need to replace the old OEM sensor with the new Autometer sender? I would like to use both senders and still retain the OEM oil pressure gauge as well as have my new oil pressure gauge.


Here are the links to the fuel pump install kits that I am looking at for my Evo fuel pump.

EXTREME PSI : Your #1 Source for In Stock Performance Parts

EXTREME PSI : Your #1 Source for In Stock Performance Parts

STM FUEL PUMP REWIRE KIT | 1G DSM | 2G DSM | EVO

Well guys I was deciding between the Autometer C2 oil pressure gauge (short sweep) or the Innovate G3 oil pressure gauge. I decided to purchase the Innovate G3 oil pressure gauge. I didnt want to shell out $150+ for an oil pressure gauge. (Full sweep C2) The short sweep C2 didnt have an accurate gauge reading due to it being short sweep. I figured I have the LC1 WB so it should go nicely with my setup. It also has a long full accurate gauge. It also is electric. So now I am trying to figure out where exactly to tap in the OFH for the sender. I would like to keep the OEM sender also. Here is a picture of a 90 OFH I got from google. Thanks for the help!

You must be logged in to view this image or video.

 

[@TDC]

Does anyone know if you can wire up the innovate G3 oil pressure gauge to be able to log in dsmlink? I also am still lost with my fuel pump question! Any help will be appreciated!

 

[Cdc1221]

Not sure how to get the pump to work with a 1g hanger short of making a spacer between the pump and bottom of the bracket. Maybe use a 2g hanger?

 

[@TDC]

Not sure how to get the pump to work with a 1g hanger short of making a spacer between the pump and bottom of the bracket. Maybe use a 2g hanger?

I'm glad you suggested this! Can anyone please chime in on this??

 

[@TDC]

Would my oil pressure sender give me accurate readings if its placed in hole #1 in the above picture???

 

[We're on Boost]

I can give you a hint in the right direction on the oil filter ports. The 1990 port arrangement is a little different than the other years. Check out the diagram and notes for the 1990 housing near the bottom of this web page from RRE:

RRE's Turbo Oil Line Installation Instructions

The upper port is unfiltered oil which your turbo wouldn't want, but your oil gage might be ok with it. Trouble is, it's before the filter, so if your filter clogs up the gage would read high instead of low.
Anyway, there was a thread just a week or 2 ago in here about the oil ports that used that same diagram you show in your post. You might try to find that for more info.
Here's the RRE diagram full size:

http://www.roadraceengineering.com/instructions/oilline/1goillinelocation.jpg

 

[Mischif]

The Evo fuel pump is a direct drop in for the 1g. Plug and play. Do a fuel pump re-wire and it will flow almost as much as a wally 190.

 

[@TDC]

The Evo fuel pump is a direct drop in for the 1g. Plug and play. Do a fuel pump re-wire and it will flow almost as much as a wally 190.

Sweet! Even the stock 1g harness will work with the evo pump?

 

[@TDC]

I can give you a hint in the right direction on the oil filter ports. The 1990 port arrangement is a little different than the other years. Check out the diagram and notes for the 1990 housing near the bottom of this web page from RRE:

RRE's Turbo Oil Line Installation Instructions

The upper port is unfiltered oil which your turbo wouldn't want, but your oil gage might be ok with it. Trouble is, it's before the filter, so if your filter clogs up the gage would read high instead of low.
Anyway, there was a thread just a week or 2 ago in here about the oil ports that used that same diagram you show in your post. You might try to find that for more info.
Here's the RRE diagram full size:

http://www.roadraceengineering.com/instructions/oilline/1goillinelocation.jpg

Thank you for all of your help!!

 

[Mischif]

Sweet! Even the stock 1g harness will work with the evo pump?

Yes.

 

[@TDC]

I got my oil pressure gauge today and the sender has 2 connectors on it one reads G and the other reads WK I know the G terminal connects to the gauge connector harness but what is the WK terminal used for??? It does not lead to anything in the instructions??

 

[We're on Boost]

I got my oil pressure gauge today and the sender has 2 connectors on it one reads G and the other reads WK I know the G terminal connects to the gauge connector harness but what is the WK terminal used for??? It does not lead to anything in the instructions??

Well if I were you I would call up their tech support and let them know that they did a poor job writing up their diagram and install instructions.

For one thing it says "add a wire from the body of the sender (NOT THE TERMINALS) to a common vehicle ground". I would think that the terminal they show as not connected to anything would be a ground terminal that you could use to attach your ground wire. But it says to attach the ground wire to the body of the sender. How the hell are you going to attach a wire to the body of the sender? That should be what the lower terminal is for.

You will likely need a ground wire because the pipe threads, which would otherwise be the ground, are more-or-less insulated by whatever you use for pipe thread sealant (I'm not a big fan of Teflon tape. I usually use Loctite anerobic pipe thread sealant which contains teflon particles.)

You could get out your multimeter, set it to ohms, and measure how much resistance there is between the body of the sender and that lower terminal. If it is 0 ohms then maybe that terminal really is a ground and you could use it. But I wouldn't do it without calling them first to check. The WK label I don't get. It might be something for a different use. So call them and give em hell.

You must be logged in to view this image or video.

[/URL][/IMG]

 

[@TDC]

Well if I were you I would call up their tech support and let them know that they did a poor job writing up their diagram and install instructions.

For one thing it says “add a wire from the body of the sender (NOT THE TERMINALS) to a common vehicle ground”. I would think that the terminal they show as not connected to anything would be a ground terminal that you could use to attach your ground wire. But it says to attach the ground wire to the body of the sender. How the hell are you going to attach a wire to the body of the sender? That should be what the lower terminal is for.

You will likely need a ground wire because the pipe threads, which would otherwise be the ground, are more-or-less insulated by whatever you use for pipe thread sealant (I’m not a big fan of Teflon tape. I usually use Loctite anerobic pipe thread sealant which contains teflon particles.)

You could get out your multimeter, set it to ohms, and measure how much resistance there is between the body of the sender and that lower terminal. If it is 0 ohms then maybe that terminal really is a ground and you could use it. But I wouldn’t do it without calling them first to check. The WK label I don’t get. It might be something for a different use. So call them and give em hell.

You must be logged in to view this image or video.

[/URL][/IMG]

Thank you for the reply! I'm glad someone understands why I asked the question. I have no clue how to get a ground wire to stay on the body of the sender. I emailed Innovate and hopefully they reply fast. Thanks again!

 

[@TDC]

Just a heads up for anyone that buys an Innovate electric oil pressure gauge. I received an email back from Innovate and they said that the WK terminal on the sender is not supposed to be used. I have no clue why they would even make it? I now I have to figure out a way to somehow connect a ground to the body of the sender?

 

[We're on Boost]

Just a heads up for anyone that buys an Innovate electric oil pressure gauge. I received an email back from Innovate and they said that the WK terminal on the sender is not supposed to be used. I have no clue why they would even make it? I now I have to figure out a way to somehow connect a ground to the body of the sender?

Figures. Actually though, I would call and talk to an actual tech support person on the phone. Email is going to be vague just like their instructions. Writing is a lost art you know. Ever notice the word "Disambiguation" in Wikipedia? People writing up instructions for sensitive electronic products could stand to practice disambiguation a little better!

So as far as having a good solid connection of a wire to the case, I don't have a good picture of the sensor so I don't know if there is anything on it that you could attach a wire or an eyelet type connector to or maybe they even have a 1/4" wide spade sticking out of it somewhere? If there is nothing obvious that would work, definitely call them and get them to describe exactly how to do it.

TEL: 714-372-5910 press 2 for tech support!

Fighting the dumbing-down of the world - one stupidity at a time.

 

[@TDC]

Figures. Actually though, I would call and talk to an actual tech support person on the phone. Email is going to be vague just like their instructions. Writing is a lost art you know. Ever notice the word "Disambiguation" in Wikipedia? People writing up instructions for sensitive electronic products could stand to practice disambiguation a little better!

So as far as having a good solid connection of a wire to the case, I don't have a good picture of the sensor so I don't know if there is anything on it that you could attach a wire or an eyelet type connector to or maybe they even have a 1/4" wide spade sticking out of it somewhere? If there is nothing obvious that would work, definitely call them and get them to describe exactly how to do it.

TEL: 714-372-5910 press 2 for tech support!

Fighting the dumbing-down of the world - one stupidity at a time.

Thanks for the number! I did give them a call and I ended up talking with the same person who was emailing me. He said to put a connector on the part of the sender that screws to the housing. He said that will work as a ground! I think I am going to find a creative way to get this thing grounded since my sender doesn't screw all the way into my steel braided line. Here is how I ended up keeping both senders. I know it isn't the prettiest way to get the job done but it will get it done nonetheless.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

 

[We're on Boost]

He said to put a connector on the part of the sender that screws to the housing. He said that will work as a ground!

Did he mean underneath that nut, like where the red arrow points in this pic?

You must be logged in to view this image or video.

[/URL][/IMG]

 

[@TDC]

Did he mean underneath that nut, like where the red arrow points in this pic?

You must be logged in to view this image or video.

[/URL][/IMG]

No he meant where that first layer of where the teflon tape is! The closest to your red arrow!

 

[We're on Boost]

Ok I moved the red arrow. Is that where?

It doesn't seem very good. Those are tapered pipe threads aren't they? Can you tighten that steel coupler fitting all the way to the nut to clamp a connector in there? I wouldn't think so. Are you supposed to shim in there with washers?

You must be logged in to view this image or video.

[/URL][/IMG]

 

[@TDC]

Ok I moved the red arrow. Is that where?

It doesn't seem very good. Those are tapered pipe threads aren't they? Can you tighten that steel coupler fitting all the way to the nut to clamp a connector in there? I wouldn't think so. Are you supposed to shim in there with washers?

You must be logged in to view this image or video.

[/URL][/IMG]

Yeah that's the correct spot! I couldn't screw it all the way down. So I figured ill make a better way when grounding it. I have to mount the sender and I might mount it to the chassis and that could be the ground!

 

[We're on Boost]

I have to mount the sender and I might mount it to the chassis and that could be the ground!

That could be made to work, if the mounting bracket is metal (aluminum or steel). You could make your bracket, drill a hole in it that is the right size for the pipe threaded nipple to go through, and put it together shimmed with lock washers. The lock washers being springy would allow you to tighten down the female pipe coupler that's in your pic all the way tight while they would at the same time be biting into your bracket making a good electrical connection to it.

 

[@TDC]

That could be made to work, if the mounting bracket is metal (aluminum or steel). You could make your bracket, drill a hole in it that is the right size for the pipe threaded nipple to go through, and put it together shimmed with lock washers. The lock washers being springy would allow you to tighten down the female pipe coupler that's in your pic all the way tight while they would at the same time be biting into your bracket making a good electrical connection to it.

I am going to try and use a hose clamp wrapped around the sender then I am going to connect a wire to it and mount the gauge! That should serve as a great ground! Ill post pics!

 

[We're on Boost]

I am going to try and use a hose clamp wrapped around the sender then I am going to connect a wire to it and mount the gauge! That should serve as a great ground! Ill post pics!

That should work too.

Hey this is kind of hilarious. See if these sender pics look familiar:

You must be logged in to view this image or video.

[/URL][/IMG]

You must be logged in to view this image or video.

[/URL][/IMG]

You must be logged in to view this image or video.

[/URL][/IMG]


This is the sender that came with a Cyberdyne 0-80 psi oil pressure gage that I bought several years ago and never installed on my car!
I just now took it out of the box to look it over and take pics.

When I first had this car I thought the stock oil pressure gage wasn't working right because the oil pressure was so low at idle. But then I found out that's just how these engines are.

In the "Instructions" it says: "Do not use any kind of teflon tape or sealer on the threads of the sender. The sender gets ground from the engine block. Any isolation between the sender's threads and the engine block will interfere with proper grounding."

Hmm, that might be one reason why I never put it on! I probably figured it might leak a little.

So I suppose Innovate must be buying senders from the same company that made this one, but Innovate is taking a different route on the grounding and thread sealing recommendation. Pretty funny.

 

[@TDC]

That should work too.

Hey this is kind of hilarious. See if these sender pics look familiar:

You must be logged in to view this image or video.

[/URL][/IMG]

You must be logged in to view this image or video.

[/URL][/IMG]

You must be logged in to view this image or video.

[/URL][/IMG]


This is the sender that came with a Cyberdyne 0-80 psi oil pressure gage that I bought several years ago and never installed on my car!
I just now took it out of the box to look it over and take pics.

When I first had this car I thought the stock oil pressure gage wasn't working right because the oil pressure was so low at idle. But then I found out that's just how these engines are.

In the "Instructions" it says: "Do not use any kind of teflon tape or sealer on the threads of the sender. The sender gets ground from the engine block. Any isolation between the sender's threads and the engine block will interfere with proper grounding."

Hmm, that might be one reason why I never put it on! I probably figured it might leak a little.

So I suppose Innovate must be buying senders from the same company that made this one, but Innovate is taking a different route on the grounding and thread sealing recommendation. Pretty funny.

That is a little weird! I did create something that is gonna get the job done! Ill post a picture right now!

 

[@TDC]

It's not the prettiest way to get the job done but nonetheless it's going to work!

You must be logged in to view this image or video.