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Old 06-19-2015, 05:24 PM   #181
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Well I've done some math here (actually google ha!) and figured out mine is at 4 BAR while cruising, that's roughly 58 PSI. It's about the same that the previous engine did when cruising. Only when cold, the values are noticeably higher (slightly above 6 BAR).

There's also something else. I don't have VVT management still, and the engine is pulling quite fine! Is this to be expected, or does it have something to do with the fact that the pressure is high? Just wondering as the VVT runs on oil and may account for some pressure loss at cruising speeds with proper management.

Also another curiosity... Does the VVT stay normally opened (mucho overlap) or normally closed (almost no overlap) when there is no management installed, or if you were to pull the VVT solenoid plug?
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Old 06-19-2015, 05:26 PM   #182
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The VVT defaults to full retard (low overlap) when there's no power at the solenoid.
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Old 06-19-2015, 05:29 PM   #183
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Hmm, I see. Thanks!
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Old 06-19-2015, 06:04 PM   #184
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Quote:
Originally Posted by leboeuf View Post
Interesting. Mine is generally at 20-25 psi at idle; 40-45 psi while cruising around; and always 40psi while at the track being horse beat.
I noticed a ~5psi drop across the board when going to synthetic oil after break-in.
All numbers are with 10w30 oil.
Bottom end clearances were all ~1.8 thousandths.
No issues in 3k miles with 3 track days.

I should also note that my oil pressure sensor has been relocated to the firewall. Not sure if that messes with my numbers, but it wouldn't surprise me.
I replaced the dummy sender with the one off of the 94 (big ugly).
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Old 06-19-2015, 06:43 PM   #185
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Yeah those numbers are with the sensor off the 1992.
I relocated it as shown in the upper left hand corner here:
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Old 06-19-2015, 06:48 PM   #186
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I just removed the stock one and threaded mine into the VVT pipe. Maybe the height of the sensor relative to the engine plays a role there?
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Old 06-20-2015, 12:25 PM   #187
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So I suppose I should show my completed setup. Thanks again for the help everyone. Will hopefully be hitting a dyno soon..
Attached Thumbnails
The Definitive "VVT swap into 90-97 chassis" Megathread.-qlvwaqn.jpg  
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Old 06-24-2015, 09:05 PM   #188
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Very interested to see what numbers you get.
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Old 06-24-2015, 09:56 PM   #189
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I did not add that plastic "sleeve" around the fuel pipes, now that I think of it. I passed them through under the throttle body, they're rubbing on the manifold there (probably not a good idea).

I also replaced the fuel hoses with brand new 7mm ones.

Should I add some sleeving at least?

Mandatory install shot:

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Old 06-25-2015, 07:49 AM   #190
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I just remembered something. I did not install the bracket that holds the intake manifold to the lower part of the block, next to the alternator.

Will it be OK without it?
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Old 06-25-2015, 08:56 AM   #191
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From what I have read, that could sometimes cause the dreaded throttle body screw to vibrate lose and get sucked through the engine. It is there for a number of reasons, mainly vibration control and support though, which are important. I would bolt it up.
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Old 07-01-2015, 01:40 PM   #192
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Quote:
Originally Posted by ThunderFox View Post
I did not add that plastic "sleeve" around the fuel pipes, now that I think of it. I passed them through under the throttle body, they're rubbing on the manifold there (probably not a good idea).

I also replaced the fuel hoses with brand new 7mm ones.

Should I add some sleeving at least?
I reused the sleeving that was on the factory lines. I figure it can't hurt, and the line that goes over the intake manifold rubs ever so slightly on the hood so I feel better with it there.
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Old 07-08-2015, 09:05 PM   #193
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Results are in... and they are good.
http://www.miataturbo.net/engine-per...-dynoed-85156/
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Old 08-18-2015, 03:00 PM   #194
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Hey guys!

So i'm just at the end of my vvt swap into EUDM 1.6 NA ( 90km ), and i managed to fry the 01 coils, don't really have an idea why...
Now i want to just use the original 1.6 coils..is there any trick on how to connect them, or just leave as it was factory and call it a day?
btw, car has sequential spark from the factory..or so they say
More or less everything is wired up as to this thread..
My VVT swap attempt - little different because 1,6 1996 Euro car
exept the coils as i somehow forgot to check the last page, where i should include the x15 connector somehow.xD
Running on MS3

Last edited by kris5150; 08-18-2015 at 03:15 PM.
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Old 08-18-2015, 10:01 PM   #195
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No NAs or NBs ever had sequential ignition. They're all wasted spark.

Just mounting the coils as they were on the original engine will do. Mind, you'll have to modify the cable boots or the cam cover for them to fit.

Also, did you try to fit the 01+ coils with the ignitor in place? That would cause them to burn
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Old 08-19-2015, 06:05 AM   #196
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Sorry i meant sequential injection, but dont think that would make a difference
Great thats what i wanted to hear. What do you mean by modifying? cables fit with no problem!?
Nope, i deleted the ignitor and ran new wires to the coils, but forgot to wire them to the condenser at the back of the head.

I did it like this...


but sould do it like this i guess...



btw, is the case/metal housing of the 1.6 coil ground for itself, or can it be mouted to non chasies/engine bracket?

Attached Thumbnails
The Definitive "VVT swap into 90-97 chassis" Megathread.-80-73251_my_vvt_swap_attempt_little_different_because_1_6_1996_euro_car_coil_adapter_harness_1_6.jpg   The Definitive "VVT swap into 90-97 chassis" Megathread.-80-87808_my_vvt_swap_attempt_little_different_because_1_6_1996_euro_car_coil_adapter_harness_1_6.jpg  
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Old 08-19-2015, 06:18 AM   #197
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I did not wire mine to the condenser behind the engine. Actually I got rid of it and they worked pretty fine. What dwell time were you running on them?

Also, the case is grounded, only the VVT coils have their own ground IIRC.
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Old 08-19-2015, 07:00 AM   #198
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Interesting, i tought that was the problem..
Cant tell..i fry them before even logging into tunerstudio
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Old 08-19-2015, 07:02 AM   #199
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Did you try to load new firmware into the ECU without disconnecting them first?
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Old 08-19-2015, 08:13 AM   #200
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Nope nothing, i just connected everything, including the battery, give the contact and there was that big cloud of smoke coming from the coils
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