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Old 04-04-2022, 03:13 PM #1
whibby whibby is offline
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Plugged Oil Ports?

Hey all, brand new to the forum, apologies if I make any mistakes.

I have a 2nd gen with a 5VZ swap. The factory second gen gauge sucks so I went ahead and purchased an aftermarket electric gauge. I have all the parts just needs some advice before I take the plunge.

From another thread on here I saw that the 5VZ *may* have some extra oil ports that are plugged from the factory but I wanted to confirm as I've heard otherwise aswell.

The thread in question - 5VZ-FE installing oil pressure guage - YotaTech Forums

Are either two of these viable to run that gauge? They were pretty stuck so I wanted to double check before I work to get em out. Thanks!
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Old 04-04-2022, 05:28 PM #2
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Easiest thing to do is buy the adapter that is metric and threads into the block. With an American 1/8”NTP fitting for a aftermarket gauge.

Search my posts, I did this and mounted the gauge in the engine compartment.


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Old 04-04-2022, 06:07 PM #3
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Quote:
Originally Posted by 19963.4lsr5 View Post
Easiest thing to do is buy the adapter that is metric and threads into the block. With an American 1/8”NTP fitting for a aftermarket gauge.

Search my posts, I did this and mounted the gauge in the engine compartment.


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Looked through your threads, glad to see that this will work.
I did already pick up a 1/8 NPT adapter so Im good there.

Does it matter which of those two ports I use for the gauge? Thats mainly what I wanted to make sure of

Thanks again man!
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Old 04-04-2022, 07:25 PM #4
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Quote:
Originally Posted by whibby View Post
Looked through your threads, glad to see that this will work.
I did already pick up a 1/8 NPT adapter so Im good there.

Does it matter which of those two ports I use for the gauge? Thats mainly what I wanted to make sure of

Thanks again man!

I just used the port the low oil pressure switch was in.


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Old 04-05-2022, 08:09 PM #5
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Quote:
Originally Posted by 19963.4lsr5 View Post
I just used the port the low oil pressure switch was in.


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You know which one that is? I can do that. Or if you know if either of the ones in the pic will work
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Old 04-05-2022, 08:37 PM #6
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actually happened upon my answer, in this form someone did the same thing Im trying to.
Really well written if anyone stumbles on this thread in the future

Lotek Gauge Pods with Auto Meter Gauges

Ill post my results after I install it
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Old 08-24-2022, 10:40 PM #7
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Quote:
Originally Posted by whibby View Post
Hey all, brand new to the forum, apologies if I make any mistakes.

I have a 2nd gen with a 5VZ swap. The factory second gen gauge sucks so I went ahead and purchased an aftermarket electric gauge. I have all the parts just needs some advice before I take the plunge.

From another thread on here I saw that the 5VZ *may* have some extra oil ports that are plugged from the factory but I wanted to confirm as I've heard otherwise aswell.

The thread in question - 5VZ-FE installing oil pressure guage - YotaTech Forums

Are either two of these viable to run that gauge? They were pretty stuck so I wanted to double check before I work to get em out. Thanks!
Did I miss the answer on if there is any difference between the two plugged ports ? I added an electric sensor to the easiest port to access from below. ( left in my image).

I get the following readings ...

1. Cold at idle about 80 psi reducing to 28 psi when hot.
2. When hot , and under throttle , seems to go to 90 psi then I think the pressure limiter kicks in.
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Old 08-25-2022, 01:49 PM #8
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Its a little hard to tell, but that might be pre-filter and pre-cooler:

Does my 99 SR5 3.4 5spd have an oil cooler? | Tacoma World

See if you can decipher the diagrams or find a better one.

-Charlie
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Old 08-25-2022, 02:25 PM #9
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Quote:
Originally Posted by phattyduck View Post
Its a little hard to tell, but that might be pre-filter and pre-cooler:

Does my 99 SR5 3.4 5spd have an oil cooler? | Tacoma World

See if you can decipher the diagrams or find a better one.

-Charlie

I’m in agreement. Until this guy I had the highest hot oil pressure of anyone that answered my post at a whopping 8psi.

I think those two ports are pre main oil galley. The pressure switch is plumbed into the main oil galley that feeds the crank.

You can see the pressure switch in the picture. I Tee’d into that port.

It would be interesting to see if the plug he circled directly under the oil pressure switch is directly connected to the PS.


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Old 08-25-2022, 03:25 PM #10
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Quote:
Originally Posted by 19963.4lsr5 View Post
It would be interesting to see if the plug he circled directly under the oil pressure switch is directly connected to the PS.
Each of those plugs is machining access to an oil gallery of some sort. Imagine a cylinder extending some depth into the engine from each of those and you can tell where they go. You just don't know what else intersects them and which direction the oil goes through them. Oil galleries 'later' in the oiling system (smaller passages) are sometimes plugged with pressed-in ball bearings or similar instead of a threaded plug.

-Charlie
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Old 09-23-2022, 12:16 PM #11
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Quote:
Originally Posted by phattyduck View Post
Each of those plugs is machining access to an oil gallery of some sort. Imagine a cylinder extending some depth into the engine from each of those and you can tell where they go. You just don't know what else intersects them and which direction the oil goes through them. Oil galleries 'later' in the oiling system (smaller passages) are sometimes plugged with pressed-in ball bearings or similar instead of a threaded plug.

-Charlie
I finally ended up installing it after saying screw it to T-ing off the original sensor. It seems to work just fine, and notable is the plug on the right is like half an inch below the port for the factory sensor.

On cold start I get 80-85 PSI (which is weird cause I thought that the limiter was at 80)
Idle I get Like 11-12 PSI
around 3200-3500 RPM i get about 35-40 PSI.
I believe all those numbers look fine?

Figured I'd update the thread in case anyone was still curious
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Old 09-24-2022, 04:06 AM #12
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Where did you mount your gauge?

Mine is still in the engine bay.


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Old 09-26-2022, 02:55 PM #13
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Quote:
Originally Posted by 19963.4lsr5 View Post
Where did you mount your gauge?

Mine is still in the engine bay.


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Haven’t gotten it mounted yet, had to get it done in a day to go on a long trip. But I routed it through the driver side on the firewall and pulled power from the fuses right there (in the 2nd gen atleast) using some circuit expanders. It’s currently just lodged between the dash and the A pillar where a gauge pod would be
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