power brake vacumm hookup question - JeepForum.com
 
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post #1 of 9 Old 03-08-2007, 04:06 PM Thread Starter
molsenice
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power brake vacumm hookup question

got a guy who just gave me a real nice set of tires for my project - all he wants in return is for me to be there to offer what advise I can for his projects. His question today was that on his jeep project, there does not seem to be available anywhere for him to hook up the hose for the power brake.

If I am not mistaken, he could splice into a vacuum hose with a T fitting, creating a new connection - Is this correct?

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post #2 of 9 Old 03-08-2007, 04:54 PM
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Quote:
Originally Posted by molsenice
got a guy who just gave me a real nice set of tires for my project - all he wants in return is for me to be there to offer what advise I can for his projects. His question today was that on his jeep project, there does not seem to be available anywhere for him to hook up the hose for the power brake.

If I am not mistaken, he could splice into a vacuum hose with a T fitting, creating a new connection - Is this correct?
What motor?
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post #3 of 9 Old 03-08-2007, 05:50 PM
jadams68
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There should be a threaded hole 1/2" on the intake manifold to use as a vacuum source.

-----------------------
I used to own two CJ's...Perhaps a 3rd is in the future?
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post #4 of 9 Old 03-08-2007, 09:03 PM Thread Starter
molsenice
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Quote:
Originally Posted by jadams68
There should be a threaded hole 1/2" on the intake manifold to use as a vacuum source.
gotta ask what motor he has - he has vacumm to other things, he just needs to be able to tie in the booster - I figured splicing would work for his situation
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post #5 of 9 Old 03-09-2007, 10:40 AM
Bromius76
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I have a brake booster on the way and will be doing this exact upgrade. I have a 258. Any chance you guys could tell me where to hookup the vacuum line?

Pleeeeeez? :-D
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post #6 of 9 Old 03-09-2007, 11:06 AM
CJ Chet
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On the intake manifold, threaded fitting between the carb and the EGR valve.


'86 CJ7
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post #7 of 9 Old 03-09-2007, 03:29 PM
gchandkeh
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I am the person molsenice is speaking of. I have the AMC 4cyl. I cannot find an available or unused port. I realize on the 258's you have one above the EGR but on my 4cyl there is not one. Can I splice into an existing vacuum hose of the same size or bigger than my vacuum hose on the booster.
By the way, thanks molsenice for the question to these guys

85 CJ7 that is a work in progress.
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post #8 of 9 Old 03-09-2007, 04:22 PM
evil-ant
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The first place to look is on the manifold for a NPT plug on the casting, if it's not there, then look on the base of the carb for a large vaccum port with a cap, if no luck there then you have 3 options, buy a maniflod with the booster port, buy a spacer plate for the carb/manifold surface that has a 1/2" vaccum port or simply drill and tap for one in the manifold, NPT 3/8" or 1/2" of course. Teeing off the egr port is acceptable if it looks sufficent in size like the one in the picture up above.
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post #9 of 9 Old 03-09-2007, 07:39 PM Thread Starter
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Quote:
Originally Posted by evil-ant
The first place to look is on the manifold for a NPT plug on the casting, if it's not there, then look on the base of the carb for a large vaccum port with a cap, if no luck there then you have 3 options, buy a maniflod with the booster port, buy a spacer plate for the carb/manifold surface that has a 1/2" vaccum port or simply drill and tap for one in the manifold, NPT 3/8" or 1/2" of course. Teeing off the egr port is acceptable if it looks sufficent in size like the one in the picture up above.

Let me know if I can be of any assistance with either of these options bud

still think we could jut "T' into one of the lines of the same size though.
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