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Yet another Mark VIII swap thread

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Old 04-07-2012, 08:39 PM
  #41  
jeh4269
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For the coolant line,I would try and find one in a little better shape or take that one off and clean it up.Did you epoxy the holes in the IMRC's.Are you using the stock intake again or going with a cobra intake?Just wondering.I'm glad to see you're tearing it down and cleaning it up.Some guys would've just thrown it in as is.
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Old 04-08-2012, 04:44 AM
  #42  
Tesla_HV
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I am going back with the Mark VIII intake. I wish that I had a Cobra intake. I am trying to do this on as thin of a budget as possible. As for taking it apart, I had to take it apart to deal with the IMRC issue.
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Old 04-08-2012, 03:22 PM
  #43  
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the wires on the plug going to the coils need to be switched
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Old 04-09-2012, 09:44 AM
  #44  
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I went back and re-read the four swap posts that I have bookmarked. It appears that no one has attempted to use the later model coil-over plug system that my Mark VIII engine came with. So then I will have to reuse the two front-engine-mounted coil packs that are currently on the '96 GT right? And then run earlier-style plug wires to the plugs right? If so, It's gonna look cheesy with later-model valve covers. I wish that there were a way to splice the later coil-over-plug system into the '96 GT wiring harness/computer.
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Old 04-09-2012, 09:46 AM
  #45  
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Originally Posted by Tesla_HV
This is what greeted me when I took off the intake. What a bunch of crap in the intake valley...

See how sooted-up the intake runners are? Does that look amiss to anyone or is this normal?
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Old 04-09-2012, 09:46 AM
  #46  
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Originally Posted by Tesla_HV
There was a bunch of crap on the IMRC blades. Now here's the deal. I removed all of the spark plugs. All were not tight. Keep in mind that this engine set in a salvage yard for at least two years. The bottom of the intake had a soup of stale gas and what looked like oil. There were no stripped or blew out plugs but none were tight. It makes me think...hmmmm....

Another view of the sooted-up intake runners. As for my previous statement about the spark plugs not being tight, I am now convinced that the salvage yard pulled the plugs and squirted penetrating oil into the cylinders before turning the engine over.

Last edited by Tesla_HV; 04-09-2012 at 09:49 AM.
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Old 04-09-2012, 11:32 AM
  #47  
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Eh, I've seen worse as far as carbon build ups go. Try and smell the cylinders ? If they did spray a penetrating lube into the holes it was probably PB plaster which has a very distinct smell. Most penetrating oils will smell pretty strong. Ever consider pulling the oil pan a taking a look ?
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Old 04-09-2012, 11:37 AM
  #48  
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That build up on the runners is normal, always a problem with imrc b heads
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Old 04-09-2012, 01:53 PM
  #49  
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Now you know why seafoam is recommended on the 4V engine. That is pretty typical.
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Old 04-09-2012, 02:33 PM
  #50  
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I have decided to use the COP system as they are used on the Mark VIII engine. A found a guy who makes a conversion harness. You plug the coil pack wiring connectors to this harness and it has connections to the coils in the correct locations. This will make things sooooo much easier.

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