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Yet another Mark VIII swap thread

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Old 04-07-2012, 08:39 PM   #41
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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
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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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This is what greeted me when I took off the intake. What a bunch of crap in the intake valley...

Click the image to open in full size.
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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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....

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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.
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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.

Click the image to open in full size.
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Old 04-09-2012, 02:42 PM   #51
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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.

Click the image to open in full size.

I like it
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Old 04-11-2012, 01:10 PM   #52
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I've been reading through a few other swap threads and I have some confusion about the oil pickup / oil pan compatibility. Will the '96 GT oil pickup work on the '98 Mark VIII engine?
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Old 04-11-2012, 05:22 PM   #53
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I've been reading through a few other swap threads and I have some confusion about the oil pickup / oil pan compatibility. Will the '96 GT oil pickup work on the '98 Mark VIII engine?
Yes, it will.
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Old 04-22-2012, 12:01 PM   #54
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Putting JB Weld in the IMRC openings today. Good thing it is a crappy day outside because this is not something that you can just walk away from. It's been about a half hour and the semi-liquid mixture still wants to run out of the holes. I've cleaned up around the holes as much as I can without disturbing the patch area. Can you go back and clean this stuff up later?

Click the image to open in full size.
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Old 04-22-2012, 12:39 PM   #55
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Just get some 400 grit sand paper to clean it up.
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Old 04-22-2012, 07:05 PM   #56
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Putting JB Weld in the IMRC openings today. Good thing it is a crappy day outside because this is not something that you can just walk away from. It's been about a half hour and the semi-liquid mixture still wants to run out of the holes. I've cleaned up around the holes as much as I can without disturbing the patch area. Can you go back and clean this stuff up later?

Click the image to open in full size.
Just an FYI, its only really necessary to fill the holes that would bleed into the closed casting/gasket areas, the ones directly between the ports don't need to be filled.
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Old 04-22-2012, 07:16 PM   #57
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I've now babysit these patches for about six hours. In the interim, I've read about the well-earned reputation of J-B the Weld glacial-flow drying time. Thanks for the information but I would think that the leak between cylinders would be counter-productive to the proper combustion process.
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Old 04-22-2012, 07:19 PM   #58
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I've now babysit these patches for about six hours. In the interim, I've read about the well-earned reputation of J-B the Weld glacial-flow drying time. Thanks for the information but I would think that the leak between cylinders would be counter-productive to the proper combustion process.
There would be no leaks between cylinders as one square port and one round port= same cylinder.
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Old 05-27-2012, 04:24 PM   #59
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Hello, great job so far on your swap. I'm going to do the same swap on my 96 in two weeks, I found a complete 97 mark 8 motor with 101k miles for 550.00. Keep up the good work I'll be looking forward to seeing how yours turns out.
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Old 05-27-2012, 09:33 PM   #60
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Hello, great job so far on your swap. I'm going to do the same swap on my 96 in two weeks, I found a complete 97 mark 8 motor with 101k miles for 550.00. Keep up the good work I'll be looking forward to seeing how yours turns out.
Hey Keith we can add a new member to the 4v swap club.Welcome aboard.
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Old 05-27-2012, 09:33 PM
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