Accusump


#1

Who has it, how easy is it to install, what did it cost?

Ran into some serious issues at VIR before turkey day and given that we will be there three times this coming year, I would prefer to do this now than grenade a motor later.
Any and all feedback is requested and appreciated.

Many thanks.
Jon


#2

Dan Smith has one on his car. He can tell you all about them. What kind of issues did you run into at VIR? Low oil pressure? Just curious because I’ve run my car their a lot with no problems…that I am aware of :frowning:


#3

We’ve got one in the 2002. It’s not all that bad to install, but (ours at least) likes to leak some. Be prepared to spend lots of money on Earl’s fittings for stainless lines.


#4

My 944 was fitted with one when I bought it and I have been thinking about putting one on the e30. On 944’s, you can swap the standard oil-filter housing for one from a turbo that has the oil cooler fittings right on it. What’s the e30 setup? Sandwich plate?

How many cars are running them in the series? Is starvation a problem with the pan design of the e30 motor?


#5

I thought the crank scraper solved the oil starvation problem?


#6

Yeah, go with a crank scraper instead. The Accusump didn’t always solve my oil starvation problems.


#7

Anything that keeps oil in the vicinity of the pump pickup is going to help prevent oil starvation in turns. A windage tray and sump baffle might be the best solution. But I’d think that an Accusump or similar wouldn’t be a bad idea.


#8

erupert66 wrote:

[quote]My 944 was fitted with one when I bought it and I have been thinking about putting one on the e30. On 944’s, you can swap the standard oil-filter housing for one from a turbo that has the oil cooler fittings right on it. What’s the e30 setup? Sandwich plate?

How many cars are running them in the series? Is starvation a problem with the pan design of the e30 motor?[/quote] the i motors have the oil cooler lines as part of the filter housing. It is not a 2 piece deal.


#9

nasaregistrar wrote:

Cool.


#10

screwynewy wrote:

Even with extra oil added, I was still getting starvation in turn 4 and hogpen. So much so that I had to go through those spots in a higher gear to keep the RPMs down or just roll for a bit to allow pressure to build back up. Thankfully it was a test and tune environment so I did not care as much.

I am not familiar with a crank scraper, first is it legal, and second, what is it?

Thank you all for your responses thus far.

Jon


#11

http://www.crank-scrapers.com/

yes, it is legal - keeps oil down in the pan
cheers,
bruce


#12

intersting, I did not know this product existed, let alone would solve the problem. Of course that should not be too surprising as I am far from an engine expert.

Any other ideas out there I should consider?

Thanks.
J


#13

You could always try to go thru the turns slower

:evil:

Granted, I’m giving this advice as someone who is also far from being an engine expert… and one who welcomes some company at the back of the pack.


#14

I have a 2qt Accusump hooked into my oil system with a 20psi electronic valve.

The Accusump ties into a Canton remote oil filter mount, and a Canton 2-port remote adapter. (For those wondering about legality, yes, Carter gave me his blessings.)

The system works fairly well, with some minor leaks (1-2tsp of oil per weekend), so long as you keep the air side charged.


#15

I dug out my quick-n-dirty plumbing diagram.

My setup is almost identical to that shown on the second page, except I did not use the thermostat/cooler as a plumb-in point due to the possibility of either a cooler thermostat failure, or cold oil temp (Summit in Oct) preventing the accumulator’s oil from getting to the block.


#16

I dug out my quick-n-dirty plumbing diagram.

My setup is almost identical to that shown on the second page, except I did not use the thermostat/cooler as a plumb-in point due to the possibility of either a cooler thermostat failure, or cold oil temp (e.g., Summit in Oct) preventing the accumulator’s oil from getting to the block.

[file name=AccusumpPlumbing.pdf size=351956]http://spece30.com/media/kunena/attachments/legacy/files/AccusumpPlumbing.pdf[/file]


#17

Newb question: Is this really a problem? I hadn’t heard of it being an issue, but seeing as the motor will be out tomorrow, I should get a crank scraper ASAP if I want to go that route.


#18

I don’t have any personal experience with oil starvation, at least not that I am aware of, but I would seriously consider putting a crank scrapper in if you have the motor out. I have thought about installing one in my car with the engine in and I hear its a pretty time consuming job. I just can’t seem to find the motivation to do any major winter projects on the car.


#19

Unless you have an oil warning light mounted where you can see it mid-corner, you won’t know if you’re having that problem. I put in an aftermarket gauge and warning light and mounted it on the A-pillar and the light would just stay on during long left-handers. The Accusump helped, but at some tracks where you have two long left handers in succession, even the big 3qt one I have just doesn’t cut it. Also, it pressurizes to nominal oil pressure, but when it has to dump oil into your engine, the sustained flow only gives you about 20psi.

I’l also note that I tracked my car about 6 weekends a year for two years without knowing about the oil starvation problem and my engine didn’t blow up, but I also know others who didn’t have as much luck.

If you have the engine out, the crank scraper is a no-brainer mod.


#20

traqrat wrote:

[quote]
If you have the engine out, the crank scraper is a no-brainer mod.[/quote]

So you contend that the crank scraper is a far better solution than Accusump?

I am all for putting something else in, I just do not want to add the scraper for $250 only to have to add the accu later on.