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Old 07-03-2008, 04:28 AM   #1
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Default 1.6 oil feed problem

While trying to install my greddy kit i ran into a slight hold up. The location where there should be a plug so i can run the oil feed line is no where to be seeing. I thought i was just stupid and was looking at the wrong area, but after triple checking multiple instructions as well as searching on here i know its the right spot.


So now i'm trying to figure out what to do. Would a sandwich plate be the next best/easiest option? If so, any idea where to find one like the one pictured in the DIY thread?

Would it be safe to T off a line if i were to run a oil cooler? (easily accessible for me)


Any help will be greatly appreciated.
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Old 07-03-2008, 04:32 AM   #2
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What year is your car? I take it you are in the U.S. or do you have a euro spec 1.6? if you are in the us and you have a 90 - 93 1.6L motor there IS a oil feed on the driver's side of the block under the exhaust manifold area.

I wouldn't suggest running a T off of your supply line or even a sandwich plate if you don't have to and you DON'T have to because there IS an oil feed on the side of the block, you just need to find it (maybe try cleaning the block off to see if it's covered up by grease/oil or something?

EDIT: AGAIN

Here's where your feed should be, try looking again...photo courtesy of Braineack's FAQ which i would reccomend reading before you make nymroe posts unless you're preparred to be flammed by all of the mod's here at MT.net


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Old 07-03-2008, 04:46 AM   #3
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The car is a 91, motor was supposedly swapped for a 92 or 93 1.6 before i bought it.

The exact location im looking at is the same one pictured in blue lettering in this thread here. I cleaned the location off as well as taking a chisel to it thinking there might be some sort of cap on it. Its perfectly round and smooth, no bolt in site.




Edit: Exactly what i'm talking about. That is EXACTLY where i was looking/feeling/cleaning/chiseling. NOTHING there....
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Old 07-03-2008, 04:56 AM   #4
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Couple scenario's i can think of but there may be a better/simpler explaanation i don't know of, either you got a motor from a different type of mazda that didn't hve the feed but has the same basic block (not sure if a protege/323's have the feed) or it's a later 1.8that doesn't have the fitting, or you are in europe and they don't have a feed on the block on the euro spec's (not saying they don't im saying they may not)? either one of those things or you just aren't seeing it, like i said post up some more info on your profile like your location, and post up all of your cars specs in your signature, pictures are even better.

There is a small plug on top of the oil pressure fitting by the way...
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Old 07-03-2008, 05:06 AM   #5
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Located in the US. My first thought was they swapped it with some other mazda with the same basic setup. Pretty positive its a 1.6 unless the megasquirtpnp meant for the 1.6 works w/ 1.8's... Only mods done to the car is j/r header/intake and MSPNP. I can take pictures, but probably can't post until tomorrow night since my isp is doing "upgrades" and is down from about 7am-7pm...

Kinda at a loss right now seeing as thought its the only thing holding me back from finishing the install :(


edit: I also have no documentation in regards the the swap. Just what the previous owner told me.
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Old 07-03-2008, 05:11 AM   #6
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You are absolutely positive there is nothing in that area? There should be a small nut or something there blocking the oil passage (it's been two years or so since i took one off of a 1.6, but i believe there was a small hex cap on there) se if there is ANYTHING in that area, if there's not take a picture and upload it and we'll try to point it out to you (or figure out why the hell it ain't there)... and good luck with people like smnavy when they see your first few posts in the morning
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Old 07-03-2008, 05:13 AM   #7
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theres another picture that may give you a better idea of what you're looking for since it's at a more realistic angle for what you're looking at while the motor's in your car.
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Old 07-03-2008, 05:22 AM   #8
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Ya thats the exact location i'm looking at. I'll take some pictures in the morning and hopefully my inet is still up. Other cars that shared the 1.6 323 GTX, Mercury Capri/XR2, 94-95 MX-3. Possible difference in those?

I know i'm a noob, but i'm not blind.... I welcome flames with open arms.
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Old 07-03-2008, 05:30 AM   #9
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Quote:
Originally Posted by special_k86 View Post
.... I welcome flames with open arms.
God help you...LOL

Best advice i can give you nad i mean this 100%, look at some of the intro threads around here and make yourself one before some more regulars get on in the morning, especially if you're planning on sticking aaround here, it would serve you VERY well...

Just to give you an idea of what you are up against: click me

Oh and for the record, I'm really not trying to be an *** or run you off.......even if some of these other guys are/will..
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Old 07-03-2008, 06:03 AM   #10
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Hey i got my flame suit on and ready. Even have a brush fire ready to roll this city about 2 miles from my house

Intro thread here

Maybe that will lessen the blow. doubtful though
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Old 07-03-2008, 08:46 AM   #11
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Quote:
Originally Posted by special_k86 View Post
I know i'm a noob, but i'm not blind.... I welcome flames with open arms.

you do not have the original motor to any USD miata. Most likely it was a crate motor. You're going to have to tee of the oil pressure sender line.
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Old 07-03-2008, 11:12 AM   #12
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Werd.

The fitting where the oil pressure sender goes is tapped 1/8 BSP. Not metric, not 1/8 NPT, but frakikin' BSP. Why did Mazda use this thread? We have no idea.

That said, you'll want to make sure that you get the correct hardware. Either FM or Bell will probably sell you a complete oil-tap-feed package, since this is how they do it on their 1.8 kits, as the latter 1.8s didn't have the mystery hole either. Pegasus Auto Racing sells BSP hardware, and I think JGS Turbo also sells a Miata-specific oil feed kit.
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Old 07-03-2008, 12:23 PM   #13
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Yeah man all the crate motors made past 92 i believe dont have oil feed bung's the only reason us 90-93 oem guys have them is cuase mazda was just using leftr over gtx blocks with a bolt in the oil feed. All newwer crate motors did not need a turbo oil port as the miata is a NA car so that part was cast with no hole. GL man
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Old 07-03-2008, 03:13 PM   #14
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ok cool well that clears that up for me. ill give fm or jgs a call. thanks guys
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Old 07-03-2008, 03:35 PM   #15
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id call begi and fm first before jgs....
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Old 07-03-2008, 06:25 PM   #16
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He called us, we supplied what we could. I don't know what the fitting is on top of the GReddy turbo, but we have the bits to take a feed off the oil pressure sender and turn it into an AN. A hydraulic shop should be able to put together a -4 to "whatever's on the top of a GReddy" hose without any difficulty.

Some 1.8 blocks have that oil feed as well, BTW. The cutoff is mid-1995. I think Mazda took a good look at how they could save a few cents on the car when things were tough in the mid-90's and that's when the feed disappeared. Along with other content such as rear subframe braces and Torsens for some models.

As for why Mazda didn't use NPT - that's a US standard, not a world standard. They didn't use a lot of 1/2" bolts either
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Old 07-03-2008, 07:49 PM   #17
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he can do a:

Earls 977515 10mm x 1.25 Banjo bolt
Earls 997641 10mm Banjo Adapter -4 male to 10mm Hole
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Old 07-03-2008, 08:00 PM   #18
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My services were not needed here. I'm going back to my bottle of rum and watch all the Pinks re-runs I've dvr'd.
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Old 07-03-2008, 08:34 PM   #19
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Quote:
Originally Posted by [email protected] View Post
I don't know what the fitting is on top of the GReddy turbo
M10x1.25, like Brainey said. Fortunately it's an easy size to find in banjo fittings- I used one out of the Brake Systems section of the Earl's adapter catalog.

Quote:
As for why Mazda didn't use NPT - that's a US standard, not a world standard. They didn't use a lot of 1/2" bolts either
Yeah, I realize that. I'd have figured they'd use a metric fitting above all else. But as an alternative, NPT has gotta be more common than BSP. I figure this was some Mazda engineer's secret homage to Lotus...
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Old 07-03-2008, 08:47 PM   #20
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Quote:
Originally Posted by Joe Perez View Post

Yeah, I realize that. I'd have figured they'd use a metric fitting above all else. But as an alternative, NPT has gotta be more common than BSP. I figure this was some Mazda engineer's secret homage to Lotus...
Actually its not, the JIS (japanese industrial standard) pipe threads are identical in every way to BSP threads. Therefore, technically, the thread you see on the miata oil sender is actually a JIS pipe thread, not BSP.
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