Is it common to pay for pictures ? - Page 4 - PeachParts Mercedes-Benz Forum

Stretch · #46 08-29-2011, 12:55 PM

Quote:

Originally Posted by greazzer

I really prefer to go with the mechanical box which has different gearing than the PS unit (capped off or not). Plus, I don't want to run the risk of damaging my present PS unit. It works great, and no leaks at all. I will try it out running it very briefly to see if I like the mechanical feel anyway, although I understand the true mechanical box is slightly better than a PS unit without power. May be going with an electric pump hooked up to the box.

Do you think an electric pump would suck up less power? I'd be surprised if the power steering pump sucked up that much power anyway...

greazzer · #47 08-29-2011, 01:02 PM

Although I do not have any super scientific measurements, the folks who know how to do this indicated to me that the power steering pump takes about 8 HP. On the other hand, an upgraded alternator -- 150 amps --is no more than 7 HP. It is about 20 amps per 1 HP. Even assuming super high amp draw on a panic turn, the pump will draw no more than 2 to 2 1/2 amps (50 amps). This would be rare, however. So, yes, there is at least 7 HP saved. That is assuming the 8 HP is accurate, but most folks suggested that number could be slightly higher, however. Assuming a constant draw of 1 HP, which is very high, then I am saving 7-8 HP.

Stretch · #48 08-29-2011, 01:07 PM

Quote:

Originally Posted by greazzer

Although I do not have any super scientific measurements, the folks who know how to do this indicated to me that the power steering pump takes about 8 HP. On the other hand, an upgraded alternator -- 150 amps --is no more than 7 HP. It is about 20 amps per 1 HP. Even assuming super high amp draw on a panic turn, the pump will draw no more than 2 to 2 1/2 amps (50 amps). This would be rare, however. So, yes, there is at least 7 HP saved. That is assuming the 8 HP is accurate, but most folks suggested that number could be slightly higher, however. Assuming a constant draw of 1 HP, which is very high, then I am saving 7-8 HP.

Fair enough - it sounds also like the typical estimation for the cooling fan. Are you going electric for that one too?

greazzer · #49 08-29-2011, 01:22 PM

Yes... All electric. The only thing being turned is altenator and A/C in the warmer months ... that is a majority in South Carolina. LOL.
The OM 617.952 started off around 125 HP from the factory. Getting rid of the pumps will save around 20 HP. That is a 16% increase, give or take.

winmutt · #50 08-29-2011, 04:16 PM

Quote:

Originally Posted by crs82

OT: Did you make it to pull-a-part yesterday. I was there around 5(ish). Didn't see you. Didn't find anything anyway.

Nope. Went camping. Eurovan trans crapped out AGAIN and spent the whole way back praying to god that I wasnt going to hit a red light (1st gear is dead).