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Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

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post #1 of (permalink) Old 11-12-2007, 07:15 PM Thread Starter
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not sure what these are

i was out workin on my jeep yesterday and noticed this and was wondering what it is, i looked through the manual and cant find anything?
http://s219.photobucket.com/albums/c...rent=thing.jpg

now i did the mc2150 swap and now i have this sitting there, i found out its a vacuum switch or something, can i unscrew it and plug it? there isnt vacuum on it both at idle or high rpm's.
http://s219.photobucket.com/albums/c...ent=thing2.jpg


well thanks for your help
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post #2 of (permalink) Old 11-12-2007, 07:26 PM
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links not working!!!

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post #3 of (permalink) Old 11-12-2007, 08:13 PM Thread Starter
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post #4 of (permalink) Old 11-12-2007, 08:48 PM
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secodn one is your CTO switch

the fist is an other sort of vacuum switch doo-dad-thingy-ma-bob

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post #5 of (permalink) Old 11-12-2007, 08:51 PM
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Second photo is the manifold vacume port. If you have the 2100 then you do not need that port anymore. The first photo looks like the vacume block that the old carb took readings from. IF I remember right and they don't look exactly like the ones I have encountered they can go as well.

Really all you need with the 2100 is a manifold vacume and a gas line. there is the brake booster out the back but that is it. Now keep in mind I haven't done one of these swaps in about 8 months.

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post #6 of (permalink) Old 11-12-2007, 09:40 PM Thread Starter
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cool... i now have another question, all the wiring that goes to these switches, has anyone ever traced these wires to where they are spliced in and cutting them off there? to completely get rid of all the random plugs all over the engine bay
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post #7 of (permalink) Old 11-12-2007, 09:54 PM
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The first pic shows the 4 inch vacuum and 10 inch vacuum switches.
The second pic shows the Coolant Temperature Override (CTO) switch.

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post #8 of (permalink) Old 11-12-2007, 09:54 PM
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Do you have a HEI Dis...

If you run the Hei and the 2100 carb then you need 1 wire to power the HEI. If you run a tach, choke then you need more, i hacked all the others out of there!!!!!

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post #9 of (permalink) Old 11-12-2007, 11:14 PM
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Remove / plug the vacuum crap and get her running well. Then go back and start removing the unneeded wiring. I would hate for you to chop something out, only to have to splice it back in.

If your 2150 doesn't have a large fitting for the brake booster on it anywhere, you can screw a barbed fitting into the intake when you take the switch out, or just insert a plug if it's not needed.

Is this the only hammer you've got?
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post #10 of (permalink) Old 11-13-2007, 09:14 PM
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Quote:
Originally Posted by Rio_Grande View Post
Really all you need with the 2100 is a manifold vacume and a gas line. there is the brake booster out the back but that is it. Now keep in mind I haven't done one of these swaps in about 8 months.
Don't forget the PCV... very important too.

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