The Definitive "VVT swap into 90-97 chassis" Megathread.
08-22-2015, 02:07 PM
#205
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So i managed to fix everything, it was the inverted spark setting in MS3. 
Now i have rather strange problem, i get the spark when i turn the key, but no spark when i try to start it, also MS3 is sating that there is "no rpm sync". Any ideas on what could it be?
Now i have rather strange problem, i get the spark when i turn the key, but no spark when i try to start it, also MS3 is sating that there is "no rpm sync". Any ideas on what could it be?
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08-22-2015, 02:18 PM
#206
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Kristjan, start your own thread for the issues with your specific car. This thread is for general questions about the swap, not specific issues with specific cars
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09-11-2015, 12:35 AM
#211
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94-97 FPR, 99 Fuel Rail, and VVT
This is my first reply so bare with me...
My goal is 01 VVT motor swap + EUDM square top manifold + mazdaspeed 6-speed tranny into 95 NA. (Also 94 torsen lsd diff, but am on the fence about the gear ratio)
This was written at the beginning of the thread and I have been trying to prove it right.
"Fuel system:
Use a 1999-2000 fuel rail and a 1990-1993 fuel pressure regulator. No other combination of OEM parts will work. The 90-93 fuel rails are too short, the 94-97 rails have incorrect mounting tabs, and the 01-05 rail places the fuel pressure regulator in a spot which interferes with the cylinder head. The 94-97 FPR places the pressure reference in a spot which interferes with the cylinder head and the 99-05 regulators do not have a return line."
Is this only true when retaining the VTCS manifold? I will be using a 99 fuel rail and EUDM square top, and was told from an outside source the 94 FPR should work, so I gave it a try...
It looks like the clearance won't be an issue.. Is there something I am missing or will I have issues with clearance later in the process? The only thing I can think of is I used the 01 injector harness for a fitment test. Am I going to use the 95 injector harness and is this going to cause a clearance issue??
Thanks!
My goal is 01 VVT motor swap + EUDM square top manifold + mazdaspeed 6-speed tranny into 95 NA. (Also 94 torsen lsd diff, but am on the fence about the gear ratio)
This was written at the beginning of the thread and I have been trying to prove it right.
"Fuel system:
Use a 1999-2000 fuel rail and a 1990-1993 fuel pressure regulator. No other combination of OEM parts will work. The 90-93 fuel rails are too short, the 94-97 rails have incorrect mounting tabs, and the 01-05 rail places the fuel pressure regulator in a spot which interferes with the cylinder head. The 94-97 FPR places the pressure reference in a spot which interferes with the cylinder head and the 99-05 regulators do not have a return line."
Is this only true when retaining the VTCS manifold? I will be using a 99 fuel rail and EUDM square top, and was told from an outside source the 94 FPR should work, so I gave it a try...
It looks like the clearance won't be an issue.. Is there something I am missing or will I have issues with clearance later in the process? The only thing I can think of is I used the 01 injector harness for a fitment test. Am I going to use the 95 injector harness and is this going to cause a clearance issue??
Thanks!
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09-13-2015, 09:29 PM
#213
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The vaccum reference port fouls the intake manifold. I guess you could run without the reference port hooked up, though. If you want vacuum reference, you need the 90-93 USDM regulator or the 99-00 EUDM/JDM return regulator.
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09-14-2015, 10:21 AM
#215
My car is running/driving nicely. Pretty happy with how easy this was for my first motor swap.
Just FYI for those swapping NB2 motors into NA's:
I did ZERO wiring to put this motor in the car... Made some ghetto mounts for my coilpacks, trimmed the plug wires and am running the old style CAS for now. I'm not running VVT until I get motivated to spend money on VVT tuner thing and do some wiring. I made a plug on a lathe at work to cap the new cam-sensor hole for the temporary.
Just FYI for those swapping NB2 motors into NA's:
I did ZERO wiring to put this motor in the car... Made some ghetto mounts for my coilpacks, trimmed the plug wires and am running the old style CAS for now. I'm not running VVT until I get motivated to spend money on VVT tuner thing and do some wiring. I made a plug on a lathe at work to cap the new cam-sensor hole for the temporary.
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09-15-2015, 03:14 PM
#218
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Thank you for the reply. Can you give me a little more detail on how the vacuum reference port fouls the intake manifold? I will be swapping all of the coolant sensors/oil pressure sender and injector harness shortly. I am sure I will come across the challenges on the way but it helps to get some type of understanding before hand. if critical I have no problems looking for a 90-93 FPR.
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09-15-2015, 03:24 PM
#219
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The reference port basically touches the intake manifold, and you can't slip a vacuum line onto it without badly kinking that line. If you need more detail, you'll probably have to assemble it yourself and see what I mean - I'm not sure how to describe it any better than "it doesn't fit, you can't do it" 
e: Post 86 in this thread discusses this topic as well.
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