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The Definitive "VVT swap into 90-97 chassis" Megathread.

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The Definitive "VVT swap into 90-97 chassis" Megathread.

 
Old 03-11-2019, 08:02 PM
  #621  
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Default MS3 PNP and NB swap CKP/CMP

I have a 97 NA chassis with the NB motor. I followed this thread for conversion of the CAS to separate NB Crank and CAM sensors.

Since I will be using a MS3Pro PnP for 96-97 model, the manual shows the jumpers for J3/J4 as determining the proper setting for the CAS/Crank VR Select. I am confused whether I need to change the default for the fact that the car is running separate CKP and CMP sensors now. Please help, new to MS. Thanks.
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Old 03-17-2019, 12:46 PM
  #622  
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Guys,
I am in a middle of engine wiring into early NA8 chassis.
the thing is that car have 4 wire coils connectors....If I follow this:
1994-1997 coils:
+12v:
94-97: Blue OK
99-05: Black/White OK

trigger cyl 1/4:
94-00: brown/yellow OK
01-05: brown/white OK

trigger cyl 2/3:
94-00: brown OK
01-05: black/yellow OK

ground:
94-05: black OK

I am now left with Black/White cable from both coils on NA8 harness but there is no wire left to connect it on VVt loom. I guess 4th wire is for tach signal, but do I really need it or it is controlled somehow by FM221 ?

Also I found strange that Black GND wires on VVT loom is thickier than 12V wires. Is it possible that EU harness got different color coded wires ? 12V wire on NA8 loom is thickier than grond wire.

See attached picture for refference. Any help much aprreciated
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Old 03-17-2019, 02:08 PM
  #623  
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Originally Posted by AndrewG View Post
Guys,
I am in a middle of engine wiring into early NA8 chassis.
the thing is that car have 4 wire coils connectors....If I follow this:
1994-1997 coils:
+12v:
94-97: Blue OK
99-05: Black/White OK

trigger cyl 1/4:
94-00: brown/yellow OK
01-05: brown/white OK

trigger cyl 2/3:
94-00: brown OK
01-05: black/yellow OK

ground:
94-05: black OK

I am now left with Black/White cable from both coils on NA8 harness but there is no wire left to connect it on VVt loom. I guess 4th wire is for tach signal, but do I really need it or it is controlled somehow by FM221 ?

Also I found strange that Black GND wires on VVT loom is thickier than 12V wires. Is it possible that EU harness got different color coded wires ? 12V wire on NA8 loom is thickier than grond wire.

See attached picture for refference. Any help much aprreciated
That "extra" wire is tach signal, my 95 doesn't currently have a functional tach but I've got a Racepak so it hasn't bothered me yet...



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Old 04-11-2019, 05:22 PM
  #624  
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Originally Posted by harrybeachdog View Post
The one thing I'll add to this is the EGR valve, for those of us that still need to pass obd2 emissions once a year. The NA8 valve operates differently, has a different connector, but has the same bolt/exhaust openings. Sadly the edge of the valve hits the intake manifold, holding it off enough to not seal. The two choices you have are to either grind the intake manifold and valve edge down a bit, or create a spacer.
To add to this, because I didn't see it elsewhere in the thread. the NA8 valve fits on a EUDM "Square-top" manifold without modification.


Last edited by Marioshi; 04-11-2019 at 05:38 PM. Reason: Not sure if Sav was yelling at me specifically, but I cut out some of the quote just in case!
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Old 04-11-2019, 05:26 PM
  #625  
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Every time you quote a picture, or quote the entire original post (******* seriously?), a kitten dies. Stop doing it.
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Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
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