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Old 03-29-2018, 06:59 PM   #14
Dieselwrencher
6>8 Plugless........
 
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Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,112
Re: C20/cummins 12 valve

Quote:
Originally Posted by Peanutbutter View Post
When I go down this road again I will put a block off plate on the gear housing and belt drive a common ps pump and go hydraboost. The marriage vacuum pump and ps pump can be a real pain if you get a bad shaft and seal on the ps pump. As long as you have the gear housing off make sure you put a fix on the killer dowl pin or it may destroy the whole motor. I was lucky, dowl pin fell down and instead of going between the two gears it got caught between the gear and tin cover, when I pulled the timing cover it looked like you had shot it with a 45 ACP from the inside out. Could'nt figure out where all the oil was coming from.
The power steering pumps have a drive coupler that is pressed on the pump shaft. That is a wear item and can be purchased with a new or reman pump. I can't tell you how many of these vac/ps pumps I've resealed and have no issues with them. I have had some severly worn ones I've had to source odd parts for but I still wouldn't hang a different pump off the side and run another belt to drive it. You can run hydroboost with a non hydroboost pump. You just have to either t the return or add a return to your reservoir on the pump.
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1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread
1972 GMC Sierra Grande Longhorn 4x4
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