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Old 02-23-2015, 06:45 PM   #3441
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Damn, first my EGR thread post from years ago gets pulled up a few days ago, now my oil temp sensor thread. Glad i have some usefull threads around here, lol
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Old 02-23-2015, 07:35 PM   #3442
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Originally Posted by 240_to_miata View Post
Damn, first my EGR thread post from years ago gets pulled up a few days ago, now my oil temp sensor thread. Glad i have some usefull threads around here, lol

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Old 02-23-2015, 09:56 PM   #3443
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Would it make sense to run a Mocal sandwich plate to get oil temp and pressure there? Or is there not enough room to stack both.
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Old 02-23-2015, 10:00 PM   #3444
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Would it make sense to run a Mocal sandwich plate to get oil temp and pressure there? Or is there not enough room to stack both.
No point for oil pressure, as Mazda already has the stock location available for you. If you have a aftermarket pressure sensor as I do, just remove the OEM sender and put your aftermarket one there. No need to create more work.
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Old 02-23-2015, 10:07 PM   #3445
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...says the guy who polished his PPF...
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Old 02-23-2015, 10:12 PM   #3446
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...says the guy who polished his PPF...
I'm not saying I'm logical...buy c'mon, that one is a given!

There ain't no rhyme or reason to my logic structure; especially when it comes to making things shiny and clean.

I have another PPF laying in my garage that I want to polish like the first and mount it on my wall. Because art.

Also procrastination of several projects on the Miata I've been avoiding as of late...
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Old 02-23-2015, 10:49 PM   #3447
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No point for oil pressure, as Mazda already has the stock location available for you. If you have a aftermarket pressure sensor as I do, just remove the OEM sender and put your aftermarket one there. No need to create more work.
There's another reason as well. The port on the side of the block is in the same galley that feeds your main bearings. An oil pressure reading there is legit -- that's what your engine is seeing.

If you tap for oil pressure at the sandwich plate, you'll be reading the output of the oil pump. That's BEFORE potential oil pressure drops from a clogged cooler or oil filter. It could mask a critical blockage.
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Old 02-23-2015, 11:02 PM   #3448
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Quote:
Originally Posted by hornetball View Post
Uhhhh . . . .

Think about it. I know you'll come to the correct conclusion.

Hint #1 . . . our oil pans have fins for a reason.
Hint #2 . . . liquids like oil and water don't follow the ideal gas law -- they're considered "incompressible."
Hint #3 . . . even if the oil pump raised the temperature 1000F, that's still the temp going into your cooler/engine -- so wouldn't you like to know what it is?

That said, generally the difference will be on the order of 15F under light running and 30F under track conditions, so the oil pan is "good enough." Beyond absolute numbers, the main thing you want to catch on track is a bad trend (i.e., oil suddenly getting hotter for no apparent reason -- time to slow down and investigate).
This should be the end of the discussion. Tap your Mocal and call it a day.
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Old 02-24-2015, 02:32 PM   #3449
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Ordered an oil temp sender to install in my sandwich plate while my motor is out because of this thread. Thanks for the heads up.
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Old 02-24-2015, 08:52 PM   #3450
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Let's play a game. Find the exhaust manifold leaks...no idea why it was so bad. Flanges were nilled and new gasket, nuts were and was torqued to spec. 2 studs backed out with their nuts. Resbond new studs?

This explains why AFR tuning and idle always fought me.



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Old 02-24-2015, 09:41 PM   #3451
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Certainly doesn't look well machined.
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Old 02-24-2015, 10:14 PM   #3452
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Cause its not. Thats belt sander marks right thur.
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Old 02-24-2015, 10:17 PM   #3453
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Also wtf is on the right side stud holes, looks like weld beads?
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Old 02-24-2015, 10:42 PM   #3454
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Quote:
Originally Posted by Jeffbucc View Post
No point for oil pressure, as Mazda already has the stock location available for you. If you have a aftermarket pressure sensor as I do, just remove the OEM sender and put your aftermarket one there. No need to create more work.
Thanks! Guess I can sell that sandwich plate I had sitting around. That was my original thought but then I second guessed myself.
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Old 02-24-2015, 11:16 PM   #3455
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When you mentioned this earlier I was under the impression you were speaking of raised areas of the flange that were machined into the flange. This looks like the flange warped during construction of the manifold and beads were run around areas that no longer made solid contact with the head.

This is what I thought you were talking about (clearly not the case).
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Old 02-24-2015, 11:45 PM   #3456
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Who did dat? Kill 'em.
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Old 02-25-2015, 12:21 AM   #3457
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Well that's...

I have no...

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Old 02-25-2015, 03:45 AM   #3458
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Originally Posted by aidandj View Post
Cause its not. Thats belt sander marks right thur.
I want to go back in time and slap naive me after I took a look at the flange surface. Such a shitty job that I am going to stop by the "machine" shop that did it and ask them what the hell they actually did.

Quote:
Originally Posted by FAB View Post
When you mentioned this earlier I was under the impression you were speaking of raised areas of the flange that were machined into the flange. This looks like the flange warped during construction of the manifold and beads were run around areas that no longer made solid contact with the head.

This is what I thought you were talking about (clearly not the case).
OK, that makes more sense. I was a little confused by your earlier comment.

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Well that's...

I have no...
You and me both sir.

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Bryan could tell I was a little annoyed and so he sent me a very pretty picture of the latest revision to his manifold flange.

I love me some CNC ****.

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Old 02-25-2015, 05:15 AM   #3459
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*Gasp*
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Old 02-25-2015, 12:02 PM   #3460
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I had mine belt sanded and no issues so far, the major issue to me I is the cylinder 1 port. Will you post a picture looking parallel to the flange? Is the area around the cylinder port raised?
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