Borla on a 4.2?? - Page 2 - JeepForum.com
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post #16 of 23 Old 06-28-2011, 09:02 PM
4.7stroker
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A head swap on these engines is very simple. Grab a buddy with some mechanical ability, tools a torque wrench and you can do the swap in a day. Don't forget to upgrade to a Motorcraft MC2150 cab for best performance, again found in the JY on mid 80's ford cars n trucks.
Snag a head from a Junkyard Cherokee drop it off at your local machine shop after filling the extra holes with JB weld if needed. There are plenty of other write-up's out there.

Dwayne

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post #17 of 23 Old 06-28-2011, 09:12 PM
littleredjeep
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Dwayne, I have a question for you. I was looking into the head swap myself. I put on a MC2100 about a year ago and was wondering if I could use it on the 4.0 head swap??? Sorry didn't mean to hi jack your thread.

88 YJ 4.2, 5-speed, 4"RC lift, 5/8 booms, herced tub, and cavi seats

My build thread
http://www.jeepforum.com/forum/f12/littleredjeep-build-669382/

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post #18 of 23 Old 06-28-2011, 09:17 PM Thread Starter
Collin89Sahara
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Oh it's ok because you probably have a question that I haven't thought of.
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post #19 of 23 Old 06-28-2011, 09:20 PM
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The 4.2 intake can fit on the 4.0 head with a small mod.
Or you could go this route a modified 99 n up intake with a carb

There is a whole sequence of pic in my gallery a how to in pic form.

Dwayne
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post #20 of 23 Old 06-28-2011, 09:21 PM Thread Starter
Collin89Sahara
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Mechanical ability tools? Do you mean mechanical ability and tools? Where would I find a MC2100?
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post #21 of 23 Old 06-28-2011, 09:25 PM
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post #22 of 23 Old 06-28-2011, 09:31 PM Thread Starter
Collin89Sahara
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Would a weber carb work?
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post #23 of 23 Old 07-01-2011, 05:05 PM
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