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Was there a Powermaster 1 and 2?


Prospeeder

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I was curious, we have the powermaster 3 right? Then there was a Powermaster 1 and 2, what cars where those in? how where they different? Were they similar, Under pressure from an accumulator? Were they way less reliable? And ABS systems also?

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There may have been, but I don't what they were called. Someone here knows that I'm sure.

I know other GM cars (when equipped with ABS) from the 86ish-91 time period could have different powermaster systems. The Buick Reatta had one, as did the Turbo Buicks. But I highly doubt any of those other systems would work in our cars.

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The PM III is also referred to as the "DM ABS III"(dm = delco moraine).

 

This timeline here from GM states this "The world’s first electrically driven fuel-saving, integral power brake system for cars and light trucks, called Powermaster, is unveiled by Delco Moraine Division."

 

http://www.gm.com/company/corp_info/history/gmhis1980.html

 

I also found this. :shock:

 

http://www.lotusespritworld.co.uk/EMaintenance/BleedingBrakes.html

 

Lotus Esprits had the powermaster systems(they even list the PMIII!!!!!, I knew Esprits had "powermaster" systems from a search I did a while back, but didn't know they had the III unit in some of them).

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woa! i didnt know that! crazy!

 

That powermaster unit in the picture definitely looks like ours. I just searched for a Lotus accumulator and they claim to use GM part # "25528382." Not sure if those would work for us, but they're still listed on gmpartsdirect and for $92.72

 

 

Ok, I found a Lotus post that stated that the above number was listed for W-body cars? Jeff, where ya' at? Got any info to confirm that the above part # accumulator will work for us? :wink:

 

 

Also, Jeff(or anyone else), do you who actually manufacturers the units available under the AC Delco name? I know the unit I got from prior was made by Hydac(a german company), I believe the AC Delco ones are also German made, but I can't confirm that since I tossed my old in in the garbage a while back(don't remember if it had that info on it anyways). Hydac has info online and two sites in the states you can order through. I might see about getting accumulators straight from them to see if we can save any $'s without having to go through Prior for them.

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matt,

 

i also found information from a lotus page. thats where i got the part number that actually showed up on GMPP for an accumulator. I cannot recall the number off the top of my head, but i know it began with an 8.

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matt,

 

i also found information from a lotus page. thats where i got the part number that actually showed up on GMPP for an accumulator. I cannot recall the number off the top of my head, but i know it began with an 8.

 

I wonder if the bottle sizes listed for all those Lotus part #'s(I found quite a few different numbers actually) would be the same size as ours or at least a size that will fit in our cars. I also wonder if they have the same pressure specs(I saw that there was a very slight difference between their stock pressure ratings and the GM replacements they were buying....they didn't notice any difference or problems by using the slightly different rated accumulators from what I gathered.) Anyways, I still want to see how much an accumulator straight from Hydac would be. It looks like we can order even the stock bottle size from Hydac(they give you a lot of choices according to the catalog on their website).

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