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hydro assist


 
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Destefano027
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Joined: 10 May 2005
Location: pittsburgh pa

PostPosted: Thu Jan 29, 2009 4:27 pm    Post subject: hydro assist Reply with quote

i looking to do a hydro assist on my cj i would like to do a homemade kit rather then buying a kit. has anyone done this or read an artical on it i need to no where to drill and tap the box and what size cylinder to you i am running 42 if that matters
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Fourlocked
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Joined: 22 Feb 2009
Location: San Diego, Ca

PostPosted: Sun Feb 22, 2009 2:55 pm    Post subject: Reply with quote

I just drilled and tapped the steering box on my '83 CJ7 as part of a total rebuild. (Dodge Magnum V8, NV4500, Dynatrac Dana 60's f&r, etc)
I got the info here:
http://www.pirate4x4.com/tech/billavista/HydroAssistTap/index.html

A lot of people say you have to disassemble your box, but I didn't. I used Grease in the flutes of both the drill bit, and the tap to catch the shavings. In addition, I used a circular magnet around the hole as I drilled and tapped, and I used a parts retrieval magnet to reach into the hole and pull out any small particles that fell in. The magnet that I had just happened to be 7/16" in diameter, exactly the right size for the hole. I used the magnet repeatedly after drilling and after tapping, and then I flushed the openings with power steering fluid and used the magnet again. I didn't get anything on the last time, but it was good insurance.

I ordered my Hydro cylinder from here:

http://www.surpluscenter.com/item.asp?UID=2007072801220189&item=9-7258-8&catname=hydraulic

I hope your project turns out....
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Destefano027
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Joined: 10 May 2005
Location: pittsburgh pa

PostPosted: Wed Feb 25, 2009 5:06 pm    Post subject: Reply with quote

thanks for the info what size calender are you running i have a full width 44 in front of mine
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Fourlocked
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Joined: 22 Feb 2009
Location: San Diego, Ca

PostPosted: Wed Feb 25, 2009 9:12 pm    Post subject: Hydro Assist Reply with quote

I just finished installing a pair of Dynatrac Dana 60s as part of a ground up rebuild. I am putting in a Dodge Magnum 5.9 V8, NV4500, and Lomax 4:1 gears in the Dana 300 Xfer case. Still working out where to mount the Hydro assist cylinder. I have a couple of ideas, but design is a series of compromises and every mounting place has a drawback or two.
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erslll
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Joined: 25 Jan 2009

PostPosted: Fri Mar 06, 2009 12:20 am    Post subject: Reply with quote

West Texas Off Road is also a good source for hydo assist info.
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Fourlocked
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Joined: 22 Feb 2009
Location: San Diego, Ca

PostPosted: Fri Mar 06, 2009 6:43 am    Post subject: Reply with quote

I chose to go with a 1 1/2" x 8" stroke cylinder. You can use a 2" for more power, but the reaction time is longer, so turning is a little slower.
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