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914World.com _ 914World Garage _ Has anyone used/installed one of these ?

Posted by: cary Jan 22 2006, 10:09 AM

I'm thinking of plumbing one of these and a breather catch tank with my 2.0 that I'm rebuilding.
But reading the info it states that it mounts vertically. Where does it get mounted, no to be in the way.

I saw it at www.9xauto.com. 914 parts / then oil supply stuff.

Posted by: cary Jan 22 2006, 10:13 AM

Heres a picture cut from their site.

Attached image(s)

Posted by: SLITS Jan 22 2006, 11:14 AM

We used a hydraulic accumulator off a Boeing 707 (I think) from a used aircraft supply (3000 psig rated) and mounted it horizontally. Had to add the shutoff valve and a one way valve in the oil line system...still cheaper than the rest of them.

Posted by: Dave_Darling Jan 22 2006, 04:01 PM

You can probably get them cheaper from Racer Parts Wholesale. I don't know if it's the same thing or not, but also search on "Accusump". If not the same product, the Accusump is at least the same idea.

--DD

Posted by: bd1308 Jan 22 2006, 07:27 PM

what's this for?

b

Posted by: Dave_Darling Jan 22 2006, 09:32 PM

It's for making sure that you have oil pressure, even in long sweeping turns. It accumulates oil when the pressure in the system is high, and pushes that oil into the oil pressure system when the pressure drops. Like when the oil sloshes away from the pickup in the middle of the sump.

--DD

Posted by: bd1308 Jan 22 2006, 09:36 PM

Posted by: GTPatrick Jan 22 2006, 09:36 PM

Dave, that is true but you are also going to have to have a soruce of air pressure in that accumulator, such as nitrogen ( like we use in aircraft) to be on the other side of the diaphragm in the accumulator that will push that oil out into the system when needed.

Posted by: redshift Jan 22 2006, 09:47 PM

It's also for setting up a pre oiling system, so it stages with your ignition, and pumps up as you cranketh!

That would make for a nice addition.

M

Posted by: gregrobbins Jan 22 2006, 09:50 PM

QUOTE (Dave_Darling @ Jan 22 2006, 08:32 PM)
It's for making sure that you have oil pressure, even in long sweeping turns. It accumulates oil when the pressure in the system is high, and pushes that oil into the oil pressure system when the pressure drops. Like when the oil sloshes away from the pickup in the middle of the sump.

--DD

So I am thinking a tuna can would help in cornering with out the hastles of recharging an accumulator and remembering to turn the valve on and off.

Posted by: Dave_Darling Jan 22 2006, 11:18 PM

Yes and no. The AccuSump can help with cold-starts, as Miles said. The Tuna Can cannot (pun not intended). The AccuSump also does not suffer from the potential road clearance issues that the Tuna Can might. (One of many subjects Jake can get wound up about; he has evidently lost at least one engine to the Tuna Can hitting something, but probably on a rear-engine'd application where it is more exposed.)

The Tuna Can is also only good for about a half-quart of "starvation prevention", if that. (Some of that oil will still slosh out away from the pickup.) The AccuSump holds anywhere from one to five quarts, if I recall correctly. That's a much longer higher-G sweeper or skid-pad.

I like the Tuna Can on my car. It has been quite effective for me. It is not the appropriate solution for every case.

--DD

Posted by: cary Jan 23 2006, 08:04 AM

The tuna can just scares me. Half of our driving is done on gravel roads. That can hanging down is just a possibilty for disaster.

This Moroso tank is $80. The Accusump starts at about $160.

Posted by: cary Jan 23 2006, 08:11 AM

I'm heading to work. But here is the how come, why fores.

http://www.moroso.com/catalog/categorydisplay.asp?catcode=13600

I didn't read them, but it should have all the info.

Posted by: groot Jan 23 2006, 08:50 AM

Capacity is important....the pictured unit is a 1.5 quart (I think). If you'll be taking long sweepers you'll run it dry.

It is the same as an Accusump. You do not have to pressurize it, unless you want to. I ran my system always open... never had to worry about opening and closing the valve. I just started the engine and didn't worry about pre-pressurizing the oil system (just like every other car out there).

I use one on my race car... very important on these cars if they are used on long sweepers, unless you go with a dry sump. I use a Moroso, 3 quart unit. I have data on the oil pressure for every track session I've run and the oil pressure accumulator works very well.

Actually, I'm selling it, if you're interested..... I'm going to dry sump (not because the oil pressure accumulator doesn't work, btw).