Brakes Power Brake Vacuum Line?

[Genaz]

Hi, I'm almost finished with the power brakes upgrade on my 79 CJ7. But I still am hung up on where to get a vacuum line hook-up for the power booster. It's a 258cu 6cyl with a 1 barrel carb (picture attached). Can I "T" off of the PCV line, or will that rob too much vacuum? Any suggestions on any other options?

Sorry under the hood looks so crummy, it's a work in progress and just getting under the hood. Other picture is from last summer.

 

[CJ]

Did your post here not work?

CJ7 power brake change.

Hi, I'm a new member and need some advice on changing my '79 CJ (258cu. 6 cyl) to power brakes. I've got the new master cylinder and power booster installed, but can't find a place to hook up the vacuum line to power booster. I

jeep-cj.com

 

[Manic Mechanic]

I'm running an EFI but I have my booster vacuum tied in right above where my EGR used to be. I think you have the same port but it's tied back into your carb.

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[Genaz]

I'm running an EFI but I have my booster vacuum tied in right above where my EGR used to be. I think you have the same port but it's tied back into your carb.

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Thanks very much for the feedback. This looks very similar. I don't think my EGR is hooked up to anything, so I can probably pull it, unless I'm missing something. Then I could use that port, correct?

 

[Manic Mechanic]

Yup. I've circled the port I used and this is the EGR block off plate I used (just Google there's lots of them) and if you want to get real fancy... Sniper EFI to replace the Carter bbd I'm running the 2300 sniper as I already changed mine over previously to an MC 2100 so that was a direct swap.

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[Genaz]

Yup. I've circled the port I used and this is the EGR block off plate I used (just Google there's lots of them) and if you want to get real fancy... Sniper EFI to replace the Carter bbd I'm running the 2300 sniper as I already changed mine over previously to an MC 2100 so that was a direct swap.

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Oh man, this is great info! Thanks very much. I think I can tie this job up in a day or two now. I'm also going to look into upgrading fuel system at some point. Was that an easy swap? Or should I start with a MC 2100 first. I don't want to have to fabricate any brackets or extra parts, as I've seen guys had to do on a few videos

 

[Manic Mechanic]

2100 is a fairly simple swap. However the one I posted about should be a direct drop in

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[Genaz]

2100 is a fairly simple swap. However the one I posted about should be a direct drop in

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Having a hard time finding that EGR block off plate.

 

[Manic Mechanic]

EGR Block Off Plate fits AMC Jeep CJ5 CJ7 258 304 360 390 401 L6 V8 - USA

These EGR block off plates are designed to cover the EGR valve opening during an engine rebuild or storing an engine out of the vehicle for long periods of time.

blockoffplates.com

Try this or just Google Jeep EGR block off plate

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[Genaz]

Yeah, I Googled and also tried the website on the picture you sent me. That one just redirects me to ebay but the page is no longer active. I saw the one you sent me (thanks!) but didn't really want to spend that much on a cover plate. So, I'll make something if I have to. Thanks again for the help!

 

[Manic Mechanic]

Yeah, I Googled and also tried the website on the picture you sent me. That one just redirects me to ebay but the page is no longer active. I saw the one you sent me (thanks!) but didn't really want to spend that much on a cover plate. So, I'll make something if I have to. Thanks again for the help!

YW I bought mine almost 20 years ago I want to say it was 15-20 bucks but I guess inflation.

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[Genaz]

Hi, I finally got back to this power brake project. I made my own EGR cover plate and pulled that connector you circled and got a connector that will hook a 3/8" hose to the power booster. But what about the vacuum port on the bottom of the carburetor that it was hooked to in the picture. Can I just block that off?

 

[CJ]

Hi, I finally got back to this power brake project. I made my own EGR cover plate and pulled that connector you circled and got a connector that will hook a 3/8" hose to the power booster. But what about the vacuum port on the bottom of the carburetor that it was hooked to in the picture. Can I just block that off?

If it is unused it should be capped.

 

[Genaz]

If it is unused it should be capped.

Ok. Thanks!

 

[Genaz]

Thanks everyone for the help. Power brakes are installed on the CJ and it stops on a dime.
Any recommendations on an air cleaner? The old one won't fit now with the power booster and new master cylinder in the way.

 

[CJ]

Just about any small aftermarket air cleaner will work. Our member @hole just put a TJ factory system on his CJ. How about this?

Engine - EFI and Later Model Air Filter Housing

Been a while since I've been on the board. Moved out of state a year ago, but had to travel back to old state to finish up some work projects has eaten into my free time. Been running the K&N filter setup with MPI for many years, but its time to ditch it. I want to put a later model air filter...

jeep-cj.com

K&N makes a great reusable filter.

Custom Air Cleaner Assemblies

Factory direct K&N replacement air filters, air intakes, oil filters & cabin filters. KNFilters.com - the official site for performance filtration products.

www.knfilters.com

Search By Dimensions

Factory direct K&N replacement air filters, air intakes, oil filters & cabin filters. KNFilters.com - the official site for performance filtration products.

www.knfilters.com

 

[Patrick]

Share with us your accomplishment by posting photos please.

 

[Genaz]

Thanks for the quick feedback. Yeah, I see a lot of small air cleaner options. I was wondering about the PCV valve and the breather element. No where to hook those up that I see on any of these. Can they just be capped off, or hooked somewhere else?

 

[CJ]

The PCV valve should be hooked up to intake manifold vacuum to draw vapors from the engine back into the intake manifold to be burned, it should not be capped. Does your current valve have two ports or one? The factory system is shown below.
With a functioning PCV system the breather can have its own filter. The only reason it was hooked to the air cleaner was to filter the incoming air for contaminants.

Crankcase Vent Breather Filters | K&N

Shop crankcase vent breather filters from K&N, available in a variety of sizes and styles. Crankcase vent filters factory direct from the official K&N site.

www.knfilters.com

https://www.summitracing.com/search/part-type/crankcase-breathers?SortBy=Default&SortOrder=Ascending&keyword=Crankcase%20Breather&kr=Crankcase%20Breather