Accusump Oil Accumulator, Where to locate |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Accusump Oil Accumulator, Where to locate |
MikeSpraggi |
Jun 16 2009, 02:21 AM
Post
#1
|
Senior Member Group: Members Posts: 781 Joined: 7-February 05 From: Silver Spring, Md Member No.: 3,570 Region Association: MidAtlantic Region |
I'm thinking of adding an Accusump Oil Accumulator to my project DE/track car. The interior will have 2 seats but I would like to mount the accumulator so I can manually control it when starting the engine.
The one car I saw had the accumulator installed where the passenger seat is/was located so the driver could control it while strapped in. With two seats in my car, where else have any of you seen these units located? Thanks Race car this weekend at Watkins Glen with Accusump. |
smj |
Jun 16 2009, 03:21 PM
Post
#2
|
"Dude, Steve from Berkeley." Group: Members Posts: 591 Joined: 28-August 05 From: Berkeley, CA Member No.: 4,691 Region Association: Northern California |
I'm picking up a variety of opinions -- shocking! (IMG:style_emoticons/default/wink.gif) I've got an Accusump from the 944S I retired, sitting around doing nothing. I thought it might eventually be useful in a teener.
Sounds like everybody feels a Type IV benefits from an Accusump, but a 6 with a well positioned oil tank shouldn't for street applications, might for track applications. Fair summary? I believe my -6 will only see the track a couple times for grins, and will be setup for agressive street use. So it looks like I won't need the 'sump there, when I finally get around to cleaning it up. |
SLITS |
Jun 16 2009, 04:09 PM
Post
#3
|
"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
I'm picking up a variety of opinions -- shocking! (IMG:style_emoticons/default/wink.gif) I've got an Accusump from the 944S I retired, sitting around doing nothing. I thought it might eventually be useful in a teener. Sounds like everybody feels a Type IV benefits from an Accusump, but a 6 with a well positioned oil tank shouldn't for street applications, might for track applications. Fair summary? I believe my -6 will only see the track a couple times for grins, and will be setup for agressive street use. So it looks like I won't need the 'sump there, when I finally get around to cleaning it up. The dry sump is setup for POSITIVE oiling under all conditions (assuming a correct installation). Dry sumps are used for a couple of reasons: 1.) Positive Oiling 2.) Reduction of oil volume in the case (or sump) to avoid parasitic drag of oil droplets in the rotating assembly (takes horsepower away) Hell, Aerobatic capable planes use a dry sump system to fly upside down (at least for a few moments anyway). Wet sump systems suffer from a couple of problems: 1.) Loss of oil pressure when the oil moves away from the oil pump pickup in hard cornering / hard acceleration or deacceleration. 2.) Parasitic drag on the rotating components of an engine robbing horsepower. That spinning crank assembly creates quite a storm over the lake of oil in the sump. Deep pans, specially modified pans with baffles, crank scrapers and windage trays were developed to overcome this horsepower robbing drag. On a small 4 cylinder racing engine, I was once told that the dry sump system would add about 5 hp from the lack of the lake of oil ... maybe true, maybe not. Ok, that's enough. Wanna know more ... visit a library. Oh, an Accusump is a trade name ... the correct terminology is hydraulic accumulator ... the ones we used on the race cars were HAs from a Boeing 707 hydraulic system. |
Lo-Fi Version | Time is now: 8th June 2024 - 03:34 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |