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Unread 03-03-2014, 08:55 PM   #16
Matt1981CJ7
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Is your PCV valve still hooked up to the carb vent? I hope not.

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Unread 03-03-2014, 08:56 PM   #17
SouthernGypsy
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Maybe this will help....
cj-7-vacuum-routing-post-nutter-bypass.jpg  
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Unread 03-03-2014, 09:11 PM   #18
seabass1858
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I just hooked my cto up to my egr and bypassed the TLV switch only because I ran out of vaccume hose. should I hook mine back up?
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Unread 03-03-2014, 09:30 PM   #19
Purplehaze1786
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SouthernGypsy...awesome diagram. And Matt....the PCV valve IS hooked to the carb vent (yellow boat thing on top of carb). It seems to run good...is that bad? haha. I'm going to match everything up with southergypsys diagram tomorrow. And i'll take some picture of my current set up so you guys can give me some input.
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Unread 03-03-2014, 09:32 PM   #20
Purplehaze1786
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And another dumb question. I don't think i have the canister purge mentioned on that diagram. Does anyone have a picture so i know what i'm looking for.
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Unread 03-03-2014, 09:33 PM   #21
Matt1981CJ7
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Quote:
Originally Posted by seabass1858 View Post
I just hooked my cto up to my egr and bypassed the TLV switch only because I ran out of vaccume hose. should I hook mine back up?
James,

IMO, the TVS switch is redundant and not necessary, if you're using the CTO to control the EGR.

Matt
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Unread 03-03-2014, 09:35 PM   #22
seabass1858
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thought i was okay as its running great with no blowby thanks again matt.
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Unread 03-03-2014, 09:42 PM   #23
SouthernGypsy
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Quote:
Originally Posted by seabass1858 View Post
I just hooked my cto up to my egr and bypassed the TLV switch only because I ran out of vaccume hose. should I hook mine back up?
I'm only going thru the CTO because I am running a K&N filter so don't even have the TLV switch.
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Unread 03-03-2014, 09:42 PM   #24
Matt1981CJ7
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Quote:
Originally Posted by Purplehaze1786 View Post
SouthernGypsy...awesome diagram. And Matt....the PCV valve IS hooked to the carb vent (yellow boat thing on top of carb). It seems to run good...is that bad? haha. I'm going to match everything up with southergypsys diagram tomorrow. And i'll take some picture of my current set up so you guys can give me some input.
Actually, I gave that diagram to SG. I'm glad to see him getting mileage out of it.

Yes, having the PCV hooked up to the carb vent is a very bad idea. For one, your PCV system is completely inoperative right now. The oily crankcase vapors have to go somewhere, so they will find their way out in places you don't want them. As it's hooked up, oil could even make its way to your carb, which would cause serious problems.

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Unread 03-03-2014, 10:42 PM   #25
SouthernGypsy
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Originally Posted by Matt1981CJ7 View Post
Actually, I gave that diagram to SG. I'm glad to see him getting mileage out of it.

Yes, having the PCV hooked up to the carb vent is a very bad idea. For one, your PCV system is completely inoperative right now. The oily crankcase vapors have to go somewhere, so they will find their way out in places you don't want them. As it's hooked up, oil could even make its way to your carb, which would cause serious problems.

Matt
Yep, I couldn't remember if it was you or JeepHammer but it's been very heavily modified since then. Just modified it even more and was about to post that one for people not using the TLV or TAC or who are using aftermarket air cleaner assemblies
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Unread 03-03-2014, 10:43 PM   #26
SouthernGypsy
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Here is a version I just modified for aftermarket air cleaners or people not using the TLV or TAC setup... This one is actually exactly how mine is setup.
cj-7-vacuum-routing-post-nutter-bypass-aftermarket-air-cleaner.jpg  
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Unread 03-04-2014, 04:20 AM   #27
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I think the tlv was something like a 60 degree thermal switch.

I know the 84-86 had a 60 degree input to the MCU below that the MCU would not go into closed loop.

I thought that was very similar. So its no biggy. Especially down south.
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Unread 03-04-2014, 04:30 AM   #28
Mike Romain
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Quote:
Originally Posted by SouthernGypsy View Post
Maybe this will help....
Don't really like your drawing, sorry.

You have the choke pull off vacuum going to the PCV and the PCV vacuum missing.

The timing advance is also shown manifold, not ported. Now some folks don't mind it being boggy on a start off, but personally I like the punch I get when I floor it and the timing advances instantly instead of dropping right out.

You also show the canister hooked direct, it needs to use the CTO so it only turns on with a warmed up engine.
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Unread 03-04-2014, 05:44 AM   #29
Purplehaze1786
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How important is the canister purge? Debating on getting one.
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Unread 03-04-2014, 05:50 AM   #30
Matt1981CJ7
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Here's the original diagram I gave Gypsy, compliments of the late McMud (RIP Terry).

It's for a Weber carb, so the vacuum ports are different then the BBD. Apparently, Gypsy has modified it to represent the Carter. I also don't care for some of the changes he's made, especially to the canister purge signal.

That said, I am an advocate of using manifold vac advance. It provides a smoother more efficient idle, better cold starts, and better low-end performance. I've never experienced any boggy start-offs as a result of using manifold vac advance. The debate continues......

Matt
vacuumlayout.jpg

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