Help with using 3rd gen oil pressure sensor in LSX swap
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Help with using 3rd gen oil pressure sensor in LSX swap
screaminchicken had told me a great way to make the 3rd gen oil pressure sensor work on an LSX swap by getting a block plug and having a shop drill out a hole in it and thread it to match the threads on a 3rd gen sensor. Does anyone have a part number for a block plug that would fit in the hole on a Gen III block? I'm wanting to have a shop thread the hole for me, and I just picked up a 3rd gen sensor today, so I'm looking to get this done soon. Any help would be greatly appreciated.
#2
Re: Help with using 3rd gen oil pressure sensor in LSX swap
look for M16X1.5. u wont find it in a autoparts store. try ibt i send you.
if ur going to have a shop do it get the biggest block plug u can find. and drill and tap the inside and tap the outside....might cost u a little bit more.
if u have the lsx oil psi sending unit......ask the shop if they can work with that after cutting the plastic housing off
if not this is a hit and miss....at orilleys look for the company called equiis they have a bag of sending unit adapters in a bag. one of them in 3/8 npt F to M16X1.5 . its about 8 bucks and usually at the place where they havbe all the gauges on display hanging up collecting dust.
u may have to go to a few different ones.
if ur going to have a shop do it get the biggest block plug u can find. and drill and tap the inside and tap the outside....might cost u a little bit more.
if u have the lsx oil psi sending unit......ask the shop if they can work with that after cutting the plastic housing off
if not this is a hit and miss....at orilleys look for the company called equiis they have a bag of sending unit adapters in a bag. one of them in 3/8 npt F to M16X1.5 . its about 8 bucks and usually at the place where they havbe all the gauges on display hanging up collecting dust.
u may have to go to a few different ones.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
I suppose I'm just content using something that shows I have pressure - a 2002 LS1 oil pressure sensor. My original 87 sensor wasn't that accurate, so perhaps I don't know what I'm missing.
Why use the thirdgen sensor? Is it that much better?
Why use the thirdgen sensor? Is it that much better?
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Originally Posted by 3.1EyeCandy
Why use the thirdgen sensor? Is it that much better?
#5
Re: Help with using 3rd gen oil pressure sensor in LSX swap
what gauge are you using ?
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
look for M16X1.5. u wont find it in a autoparts store. try ibt i send you.
if ur going to have a shop do it get the biggest block plug u can find. and drill and tap the inside and tap the outside....might cost u a little bit more.
if u have the lsx oil psi sending unit......ask the shop if they can work with that after cutting the plastic housing off
if not this is a hit and miss....at orilleys look for the company called equiis they have a bag of sending unit adapters in a bag. one of them in 3/8 npt F to M16X1.5 . its about 8 bucks and usually at the place where they havbe all the gauges on display hanging up collecting dust.
u may have to go to a few different ones.
if ur going to have a shop do it get the biggest block plug u can find. and drill and tap the inside and tap the outside....might cost u a little bit more.
if u have the lsx oil psi sending unit......ask the shop if they can work with that after cutting the plastic housing off
if not this is a hit and miss....at orilleys look for the company called equiis they have a bag of sending unit adapters in a bag. one of them in 3/8 npt F to M16X1.5 . its about 8 bucks and usually at the place where they havbe all the gauges on display hanging up collecting dust.
u may have to go to a few different ones.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
I was actually wondering what that spot was for on the oil pan? I have a hole with two threaded holes next to it down there on the side of the oil pan. Is that for an oil cooler or something? If it is an oil cooler, I wouldn't be doing any harm by simply plugging it right?
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It's for an oil cooler if there are two ports on it. Plugging it will prevent any oil from getting to the engine.
The one in the pic I posted is the f-body "turn-around" that routes the oil from the filter to the engine. What looks like a port comes plugged - undrilled and untapped. Here's the "before" picture.
The one in the pic I posted is the f-body "turn-around" that routes the oil from the filter to the engine. What looks like a port comes plugged - undrilled and untapped. Here's the "before" picture.
Last edited by five7kid; 06-13-2011 at 12:07 AM.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
I'm using my original 1987 0-60?psi gauge. Firebirds had the electronic clusters then. With the old TPI - the gauge just pegged out normally and would lower to 3/4-full at a stop-light depending on rpm. I know the needle is moving to the same general location with the ls1 sender, haven't paid enough attention to it to know where it normally reads though.
#11
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
i used a '02 LS1 Z28 sensor for my LS3 swap. It of course has the right threading and it drives the stock dash gauge fine. it's accuracy i think is close enough for what you use the gauge for
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
It's for an oil cooler if there are two ports on it. Plugging it will prevent any oil from getting to the engine.
The one it the pic I posted is the f-body "turn-around" that routes the oil from the filter to the engine. What looks like a port comes plugged - undrilled and untapped. Here's the "before" picture.
The one it the pic I posted is the f-body "turn-around" that routes the oil from the filter to the engine. What looks like a port comes plugged - undrilled and untapped. Here's the "before" picture.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Last edited by BlueZee28; 10-31-2013 at 09:11 PM.
#14
Re: Help with using 3rd gen oil pressure sensor in LSX swap
after u confirm that those holes are not needed for oil passage. can u have ur machine shop tap and thread that part for some NPT pipe threads.
once its NPT pipethread ur options for adapter are endless.
hell u could probabaly put a custom oil cooler later down the road. for now block one off and use the other with a 90* elbow and use correct sender for ur gauge like five7kid did
once its NPT pipethread ur options for adapter are endless.
hell u could probabaly put a custom oil cooler later down the road. for now block one off and use the other with a 90* elbow and use correct sender for ur gauge like five7kid did
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
OK, what you're showing in your post (above) are the passages in the block itself. Obviously, if you leave it uncapped, you'll have oil squirting out of one of those holes. If you just cap it off, like with a flat piece of metal or similar, then the oil won't get from one of those passages to the other. That's the reason for the piece in the picture below - it's basically just a "U" that directs oil from one of the passages to the other.
What five7kid & I have each done is to just drill into that piece & utilize it as an easy way to get an oil pressure reading from the engine...
Originally Posted by five7kid
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Ahh ok that makes sense now. Do you have a part number for that piece by any chance?
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
so can you just leave the ls1, or truck lq4 in my case, sender there and it will read on the stock electronic gauges? cause mine used to be pegged all the time anyway with the 305. if i can just leave it though, that'd be good. does the lsx or lq4 one go to the pcm, or direct to the gauge in the harness?
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It came on my f-body engine. I don't have the p/n, but it should be available at the dealer.
#19
Re: Help with using 3rd gen oil pressure sensor in LSX swap
From all the disscussions here, I understood that the LS1 sender does not work with a stock 3rd gen gauge.
1st time, alan91z28 and 3.1EyeCandy has confirmed that this is not true
When I cranked my ls1 couple months ago, i was getting no reading at all at the gauge (91 gta gauge) but was getting some reading using a dmm but nothing at the gauge.
I wonder why everyone else is drill and tapping the oil bypass or trying to find a NPT to metric adapter .
I already sourced an adapter and tpi connector and got it wired in.
Nick,
based on this info, try using the LS1 sender and see if ur stock 91 gauge works. report back too.
1st time, alan91z28 and 3.1EyeCandy has confirmed that this is not true
When I cranked my ls1 couple months ago, i was getting no reading at all at the gauge (91 gta gauge) but was getting some reading using a dmm but nothing at the gauge.
I wonder why everyone else is drill and tapping the oil bypass or trying to find a NPT to metric adapter .
I already sourced an adapter and tpi connector and got it wired in.
Nick,
based on this info, try using the LS1 sender and see if ur stock 91 gauge works. report back too.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
I don't mind having to get ahold of a fitting that will go from standard to metric if it makes the wiring easier. Does the sender go straight to the dash? If so, then I assume the 3rd gen sender will be easier to mate to the 3rd gen wire for that sender. If you use an LS1 sender, are the connectors different?
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
I believe it's just 1 wire either way (straight from the sender to the dash). I have an ls1 harness so have no idea if the connection to the sender is different.
#22
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
i am using an '02 LS1 Z28 stock gauge. it is one wire and goes right to the gauge, on my '85 iroc it goes to C100-E5
with my stock 0 - 60 PSI gauge it is normally in the 40-50 PSI range when running... i have been using this set-up ever since i got my car running this spring
i was going to make an adapter for a stock 3rd gen pressure switch but when i found this worked i figured this was much better and the accuracy is good enough for what you are looking for... ie do you have decent oil pressure
thanks
with my stock 0 - 60 PSI gauge it is normally in the 40-50 PSI range when running... i have been using this set-up ever since i got my car running this spring
i was going to make an adapter for a stock 3rd gen pressure switch but when i found this worked i figured this was much better and the accuracy is good enough for what you are looking for... ie do you have decent oil pressure
thanks
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Hmm, maybe I'll just return the 3rd gen unit and buy one for an LS1 and see how it works.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Guys, you are making this way too hard. As stated by V8 & five7, you can simply drill and tap the oil transfer adapter, above the oil pan, but it MUST be in place. OR as screemingchicken said, you can get the plug,that goes where the stock LS1 oil sending unit is, drill and tap this. I actually made the one for him. The plug can be found at Advance Auto Parts. Its a replacement oil drain plug M16-1.5,cost less than $2. Take this to your machinist, have him tap it 1/8 npt. Or better yet, get yourself a 1/8 pipe tap, a letter R drill bit, and do it yourself. It,s not that hard. Oh if you can't find a letter R drill, a 11/32 will work. Do it yourself and you will have gained a new skill. Total cost should be $10 to $12 and you will have some more tools for later use. Later< Dean.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Blue Z, oil is picked up by the pump,via the pickup tube . It is then pumped to one of the holes shown. If the transfer adapter was left off the oil would be pumped onto the ground.If the hole was pluged, flow would stop here and never reach the filter. The adapter simply links the two holes together. Hope this helps explain, Dean.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Originally Posted by SheldonZ28
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Originally Posted by DeanJ
No, it does not fit the pan, I will check that size later today and post back.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
But I have a question about this fitting. If I already have an Autometer mechanical oil pressure gauge, would I just use this fitting above in place of the ls1 sending unit? I would rather keep my Autometer gauge so if I just have to buy this piece that would be nice. Anyone done this or know?
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
I'm bumping this thread back from the dead lol.
But I have a question about this fitting. If I already have an Autometer mechanical oil pressure gauge, would I just use this fitting above in place of the ls1 sending unit? I would rather keep my Autometer gauge so if I just have to buy this piece that would be nice. Anyone done this or know?
But I have a question about this fitting. If I already have an Autometer mechanical oil pressure gauge, would I just use this fitting above in place of the ls1 sending unit? I would rather keep my Autometer gauge so if I just have to buy this piece that would be nice. Anyone done this or know?
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
I just bought a "Y" connector and some adapters, so I´m running both my stock LS2 sensor to feed the computer some info, and the stock -89 Iroc sensor to drive the gauge. They are located at the stock location by the firewall.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
I'm bringing this thread back from the dead again. Does the ECU use oil pressure info for anything, or is this strictly for the gauge? I'm having a hell of a time figuring out whether I should be tapping the oil cooler plug for a thirdgen sender, using an adapter for a sender in the existing location, or just using the existing sender!
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Just use the existing sender Jim
don't make things complicated.
don't make things complicated.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
its just for the gauge, so just splice it in if yours works. while trying to install the truck sender i had, i broke it in half. i ended plugging the spot on the rear of the block because i couldn't the room i needed to get the 3rd gen sender to fit. from there, i tapped the plug that's above the oil filter and used that spot for the factory 3rd gen sender.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
I just bought an adapter that the 3rdgen sender screws into then screws into the plug behind the intake manifold. Everything works perfect...
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Bought my adapter for my oil pressure and my coolant guage sender here. http://hotrodlane.cc
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
I'm bringing this thread back from the dead again. Does the ECU use oil pressure info for anything, or is this strictly for the gauge? I'm having a hell of a time figuring out whether I should be tapping the oil cooler plug for a thirdgen sender, using an adapter for a sender in the existing location, or just using the existing sender!
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
if not this is a hit and miss....at orilleys look for the company called equiis they have a bag of sending unit adapters in a bag. one of them in 3/8 npt F to M16X1.5 . its about 8 bucks and usually at the place where they havbe all the gauges on display hanging up collecting dust.
u may have to go to a few different ones.
u may have to go to a few different ones.
#44
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
For what it's worth, I ended up just using a 4th gen oil sensor and to my knowledge it is pretty darn accurate.
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Thanks
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
Top pin runs the gauge, bottom is ground. You want the green connector. Look at the 4WD vacuum sw on S10s at a local JY if you cant find the connector
#47
Re: Help with using 3rd gen oil pressure sensor in LSX swap
I just swapped an LC9 5.3l into my 84 Trans Am. I had a local shop drop the engine in. There has been a slow oil leak, and I thought it was from the oil filter. I changed the filter, but oil was still leaking from that area. So, I took some video with my iPhone, and it looks like the leak is coming from the oil pressure sensor. I checked my notes, and it looks like the installer forgot to use the AutoMeter Metric Adapter that I provided. Am I correct?
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Re: Help with using 3rd gen oil pressure sensor in LSX swap
The adapter in the package is to use the third gen sender in the hole in the block at the rear of the intake manifold. Where your sender is mounted wasn't threaded from the factory. It looks like the shop didn't tap it correctly for your sender. It looks like it isn't threaded in very deep.
#49
Re: Help with using 3rd gen oil pressure sensor in LSX swap
Thanks - I got the front end on ramps, and I removed the two bolts holding that cap/plate. I took the cap and oil sender to my work bench. Then I tightened the sensor and used Teflon tape. I think that solved the problem.
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9192camaro
Engine/Drivetrain/Suspension Parts for Sale
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Engine/Drivetrain/Suspension Parts for Sale
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