Cj7 junkyad hydroboost brake swap? - JeepForum.com
 
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post #1 of 9 Old 03-30-2013, 11:49 AM Thread Starter
Alex77cj7
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Cj7 junkyad hydroboost brake swap?

Hello,
I'm looking into upgrading my brakes. My current setup is factory manual brakes with drums all the way around. I was really looking into doing a junkyard hydroboost swap. I was looking at the astro swap but can't find any good write ups. Which swap is best and easiest? What all would I need to take with me when I leave the junkyard off of the donor vehicle? Does anyone know of a good write up on any of these?


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post #2 of 9 Old 03-30-2013, 11:51 AM Thread Starter
Alex77cj7
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Any bit of help is greatly appreciated.

Thanks,
Alex

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post #3 of 9 Old 03-30-2013, 03:12 PM
hp_lovecraft
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I was thinking about this topic a few days ago. Those aftermarket 3rd party vac boosters are so expensive, I thought this might be a cheaper option. But... in the end, seems like more work then its worth to me. Without power brakes I can still lock up my tires. Not sure I really need power brakes.
Anyway, these were the threads I remember looking at:

http://www.gmfullsize.com/forum/showthread.php?t=156800
http://67-72chevytrucks.com/vboard/s...d.php?t=523502
http://bangshift.com/blog/tech-how-t...-or-truck.html
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post #4 of 9 Old 03-30-2013, 04:57 PM Thread Starter
Alex77cj7
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Quote:
Originally Posted by hp_lovecraft
I was thinking about this topic a few days ago. Those aftermarket 3rd party vac boosters are so expensive, I thought this might be a cheaper option. But... in the end, seems like more work then its worth to me. Without power brakes I can still lock up my tires. Not sure I really need power brakes.
Anyway, these were the threads I remember looking at:

http://www.gmfullsize.com/forum/showthread.php?t=156800
http://67-72chevytrucks.com/vboard/s...d.php?t=523502
http://bangshift.com/blog/tech-how-t...-or-truck.html
Thank you so mich

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post #5 of 9 Old 03-30-2013, 05:11 PM Thread Starter
Alex77cj7
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Anyone know if I have to change my proportioning valve when i do the swap? or if i have to change any of the hard lines?

Thanks,
Alex

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post #6 of 9 Old 03-31-2013, 12:13 PM
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1978 CJ7: 304, 3Spd, AMC 20 Rear, Thrush Welded Mufflers W/ Turndowns, Unknown Front, Worn out Dana 20 case
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post #7 of 9 Old 04-01-2013, 06:47 AM
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post #8 of 9 Old 04-01-2013, 10:22 AM
CSP
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If you have discs in the rear a good donor is mid-80s Mercury Marquis. I pulled the hydroboost setup out of one of these years ago when I swapped to rear discs. Unfortunately it wanted the same real estate as my air filter housing, so it's on a shelf in my shop.
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post #9 of 9 Old 04-01-2013, 11:13 AM Thread Starter
Alex77cj7
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Quote:
Originally Posted by CSP
If you have discs in the rear a good donor is mid-80s Mercury Marquis. I pulled the hydroboost setup out of one of these years ago when I swapped to rear discs. Unfortunately it wanted the same real estate as my air filter housing, so it's on a shelf in my shop.
I'm actually going to stick with drums for now. I have drums in the front so there's not much of a point of putting rear discs with front drums. I'm swapping to a ford 9" soon and idk what for a front axle. I've been reading up on doing this swap more and more lately and I think I'm just going to do swap to a dual diaphragm booster out of a Cherokee xj.. Seems like a lot easier of a swap and since I'm not going with any tires bigger than 35's 37's that booster should do just fine. Do any of you have a booster bracket either from a yj or cj that you could take pictures and measurements of and post for me?

Thanks,
Alex

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