944Hybrids: 924/944/968 and 928 V8 Conversions
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HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Added a P.S. cooler and blew my rack. Why?

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Added a P.S. cooler and blew my rack. Why? Empty Added a P.S. cooler and blew my rack. Why?

Post  Rob44 Thu Jul 14, 2022 8:31 pm

So I purchased a complete LT1 converted '85.5 944 with Ford Hydroboost, PSC remote reservoir, and GM power steering pump. Everything worked, except I noticed there was no cooler for the power steering. I knew that wasn't smart. I had a good transmission tube cooler already, so figured I would install it.

Just for curiosity sake, I installed a temperature gauge and sender in the return line to see how much the cooler helped. Before adding the cooler, it was getting up to 230*F quickly and holding there. I plumbed in the cooler into the return line and temps were reduced to 170*F.

Unfortunaltely the power steering pump began making noise as soon as the cooler was installed. I tried several attempts to bleed the system, and after a few test drives I blew the power steering rack. :-(

What did I do wrong?

Thanks!
Rob


Last edited by Rob44 on Fri Jul 15, 2022 2:21 pm; edited 1 time in total

Rob44

Posts : 8
Join date : 2019-11-24

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Added a P.S. cooler and blew my rack. Why? Empty Re: Added a P.S. cooler and blew my rack. Why?

Post  Rob44 Fri Jul 15, 2022 9:24 am

Let me add the rack was clearly rebuilt recently before I aquired the car. Very clean and a fresh coat of paint. So this wasn't a case of old seals or anything.

Rob44

Posts : 8
Join date : 2019-11-24

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Added a P.S. cooler and blew my rack. Why? Empty Restriction

Post  Donmcleod Tue Jul 19, 2022 3:56 pm

I assume the cooler is installed after the rack on the return to the reservoir. If it is restricted it could add back pressure to the rack seals as well as starve the pump.

Donmcleod

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Join date : 2022-07-18

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Added a P.S. cooler and blew my rack. Why? Empty Re: Added a P.S. cooler and blew my rack. Why?

Post  Rob44 Mon Jul 25, 2022 7:53 am

I installed the cooler in the return line between the PSC remote reservoir and the pump.

It could indeed be restriction caused by the cooler, but how else would you install a power steering cooler?

Rob44

Posts : 8
Join date : 2019-11-24

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Added a P.S. cooler and blew my rack. Why? Empty Re: Added a P.S. cooler and blew my rack. Why?

Post  Rob44 Mon Jul 25, 2022 8:39 am

I'm rebuilding the rack now. Once that's done, I'll delete the cooler and hope for the best.

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Rob44

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Post  Donmcleod Tue Jul 26, 2022 11:11 am

If I understand correctly you have the cooler between the reservoir and the pump, which is the suction (feed) line TO the pump. The suction line cannot have any restrictions. The cooler should be on the return line from the rack to the reservoir.

Donmcleod

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Added a P.S. cooler and blew my rack. Why? Empty Re: Added a P.S. cooler and blew my rack. Why?

Post  Rob44 Tue Jul 26, 2022 8:39 pm

Thanks for that. I think you're right. That was probably the problem!

Rob44

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Join date : 2019-11-24

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