I've recently discovered that my accusump is insufficient for the prolonged banking turns at Cal Speedway when taken at 150mph. I ended up with a rod knock probably due to a loss of oil pressure from an uncovered oil pickup.

So, I've been doing some research into other alternatives or mods to help out. I've located a dry sump setup and pan. http://www.drysump.com/price.htm
There are also baffled oil pans available from spoon and J's racing.

However, in looking around i discovered what seems to be a popular means of increasing the oil pressure for a number of V8's and V6's. It seems most oil pumps and ours included have a spring loaded bypass in the oil pump. Its a means of regulating pressure to predetrmined levels. The mod i've seen replaces the OEM spring with a stiffer spring and thus raises the pressure relief point of the mechanism.

http://store.summitracing.com/eproduct.asp...94925173+301029

Does anyone here have any familiarity with this type of mod?

I have other questions regarding dry sumps but i'll save those for another thread unless your itching to comment on them rigth now.

 

what's the cost (from your calculation) for a dry sump set up davepk?

 

Holy crap Dave... sorry to hear about the motor. First Rylan... now you? Do I see a 2.2 in your future???

I have experience with adjusting the oil pressure maximum on my (don't laugh) pickup. On mine I just had to lower a stud and tighten a set screw (much like adjusting valve lash) to increase the spring force. On my car it worked fine... but for cornering it won't do squat. You will lose oil pressure when oil moves away from the pickup no matter what. And it does not take more than a tenth of a second more to drop the extra oil pressure that you just increased. I'll take you for a cloverleaf ride in my pickup and show you.

If you do decide to do it be mindful of your seals... the first time I did it I spiked 125 psi and blew the oil pump seal. No damage... it is just messy as all hell.

If you are getting the dry sump why do you think you will need the higher oil pressure?

 

The spring mod wasnt meant as a fix. I was just curious to see if others knew about it and what there experience was with it. It also struck me that the oil bolt recall in europe didnt include a new spring for a slightly higher max oil pressure. That would seem like a natural match for an increased flow oil jet.

If i put together a dry sump setup it will have an adjustable oil pressure regulator much like an adjustable fuel pressure regulator.

The helms indicates a minimum oil pressure of 85psi @ 3K rpm. I wonder what it should be between 5K and 9K rpm? The same 85psi? All the oil pressure regulators i've seen seem to do 60 psi +/- 30 psi.

Nope, not likely a 2.2, i'm much too attached to a 9K redline. If you told me i could do that with a 2.2 i would certainly consider it but at this point i'm looking to get a brand new short block and use the head off my current motor with new springs, valves etc installed.

I'm thinking i'll remove the oil pump from the new block and use a dry sump instead. As well as remove the water pump and use an electric water pump instead.

 

I was told it would be $5K to do it right.

So far in my own research i have the following...
$520 for a dry sump oil pan. I believe its a 2 port pan.
$800 for a 3 stage pump and pressure regulator.
$70 for a breather can.
$230 for a 7 qrt dry sump tank
$200 for pulleys and belt

Thats $1820 in basic parts alone and doesnt include hose, fittings, brackets or other misc parts. So at least $2000 likely more.

 

Just rebuild the motor. as I've told you a few times now I think you're better to just eat motors every year.

you should email tony and find out where the 5k figure comes from. Im sure it'll all add up.

 

also I would just consider running data acq or hook back up your oil PSI gauge so you can be aware before hand if your actually starving.

We've run our cars since OTC 03, thats a year of balls out driving on a motor that can be had had for 2500 from a salvage. That with an accusump (maybe bigger one?) and warning the probelm can be controlled for far less than a drysump.

 

I think Dave has the largest accusump (3 qt).

 

There are bigger ones (I think), and you could always run more than one.

 

I think I mentioned running multiple sumps to Dave, but he said it worked differently than I had described..

Just like replacing engines, it doesn't address the root cause of the issue. Besides, if Dave does his typically thorough R&D and decides to manufacture a kit, I'll bet there would be a lot of people interested.