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Old 06-08-2007, 12:03 PM   #1
ride5000
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Default possible alternative oil separator (lingenfelter)

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Old 06-08-2007, 12:25 PM   #2
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Its not a matter of "if"... but a question of...

"1 or 2?" and

"Should I, or can I, plumb the oil drain back in?"
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Old 06-08-2007, 12:44 PM   #3
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very nice! I was pondering hard on the Crawford. Maybe I'll try this!
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Old 06-08-2007, 01:47 PM   #4
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ohhh...options are always a good thing

I wonder where they source them from though.... i don't know where i read that they are actually oem pieces from one of the car companies... If true, i'd rather jump the markup and go tap the source directly

Last edited by jigga; 06-08-2007 at 02:16 PM.
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Old 06-08-2007, 05:13 PM   #5
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The side ports are 1" and the drain is 0.5" diameter... if it's OEM, it's off something big I just wish it had two inlets on it like the crawford piece does.
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Old 06-08-2007, 06:25 PM   #6
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Quote:
Originally Posted by jays05 View Post
The side ports are 1" and the drain is 0.5" diameter... if it's OEM, it's off something big I just wish it had two inlets on it like the crawford piece does.
You can buy 2 for less than the price of the Crawford, and imho, it looks better anyways

Let's compare.... Lingenfelter (making 1100hp reliably with engines never designed with a turbocharger) to Crawford (Making 500hp semi-reliably with engines that come from the factory already boosted).

They use one of the Lingenfelter separators on a 650hp car, two on the 750+ cars. Im going to be excited to make 350awhp, though I expect to do it at 1.2 lateral g's. I am very happy to have the Lingenfelter item available.
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Old 06-08-2007, 06:27 PM   #7
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Quote:
Originally Posted by jays05 View Post
The side ports are 1" and the drain is 0.5" diameter... if it's OEM, it's off something big I just wish it had two inlets on it like the crawford piece does.
I'd only guess one of the new 650hp Corvettes (supercharged). GM rarely needs to go to someone like Lingenfelter for parts, and I dont recall Lingenfelter ever disguising any OEM parts as their own.... so if it was true, it would be somethign special like the Blue Ray vette.
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Old 06-08-2007, 06:41 PM   #8
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why is it that there is an HP rating though for these things? I would think any rating would be based more on the number of cylinders the car was running or something..does the amount of HP one makes determine the amount of blowby there is?

If there is a rating then, what HP rating would the Crawford units be good for?
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Old 06-08-2007, 08:10 PM   #9
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Fairly big unit, 9" long and about 5" wide.
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Old 06-08-2007, 10:01 PM   #10
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Old 06-08-2007, 10:47 PM   #11
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I just ordered one the the lingenfelter air/oil separators the motor should be back in my car next week and running a week or two later, I'll post up some pics of the lingenfelter piece when I can.
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Old 06-08-2007, 11:44 PM   #12
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im tempted too, but i still don't get why they rate them for only 500HP... I would have thought that one would be enough for however much power one wanted to run

Can anyone elaborate on this HP rating business?
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Old 06-09-2007, 12:11 AM   #13
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Quote:
The vehicle in the picture with the two oil-air separators is a 1200 hp twin turbocharged 427 C6 Corvette. The other two pictures show a single separator as installed in our 725 hp twin turbocharged 427 CID C5 and C6 Corvette engine packages.
It seems like they contradict their own HP ratings. If a single separator can handle a 725hp tt 427 I think it can handle my 35r'd 2.5L.
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Old 06-09-2007, 08:27 AM   #14
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well when you think about it, you need air mass to make power.

regardless of whether that's from a

high boost FI motor with "small" displacement, fewer cylinders and rings, but much higher cylinder pressures

or

zero boost NA motor with "large" displacement, more cylinders and rings, but lower cylinder pressures

the required air mass to net a given power level is about the same. though high cylinder pressures obviously increase blow by, so does sheer number of cylinders and therefore total piston ring-wall contact surface.

at least, that's my take on rating them wrt HP.
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Old 06-09-2007, 09:49 AM   #15
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interesting... so i wonder how much power Crawford's unit would be rated to.

I've been doing some reading about people using air/oil separators in general, and it seems that they DO require cleaning from time to time, meaning you don't just stick em in there and forget about them. Crawford mentions that theirs doesn't require cleaning, which makes me wonder what they have done differently to avoid the need to clean the can out.

There are also a few oem manufacturers that make them too for their cars, Volvo being one of them. Their version has 2 inlets and a drain at the bottom going back to the engine. I read on the forums about them requiring cleaning periodically, which leads me to believe that all air/oil separators wil require it, Crawford's included. But how you would get inside the crawford unit to give it a proper cleaning is a bit of a mystery.

I am still chomping at the bit to find out where Lingenfelter source these from so that i might be able to avoid the typical markup and tap the source directly.
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Old 06-09-2007, 12:40 PM   #16
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I'm going to order one and spend a bit of time trying to figure out where to put it. Im still using a TMIC (autoX rules), so I don't have an obvious spot for something this size to drain back into the block easily.

I've ordered alot of stuff form Lingenfelter before, and it's rarely overpriced for what you actually get.
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Old 06-09-2007, 01:14 PM   #17
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Quote:
Originally Posted by RainMaker View Post
I'm going to order one and spend a bit of time trying to figure out where to put it. Im still using a TMIC (autoX rules), so I don't have an obvious spot for something this size to drain back into the block easily.

I've ordered alot of stuff form Lingenfelter before, and it's rarely overpriced for what you actually get.
that might be true, but have you seen the cost of the replacement filters for it? somewhere in the 50 dollar region...
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Old 06-09-2007, 02:01 PM   #18
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depending on what the filters are made out of, it may be possible to rinse them off with a solvent (ie gasoline), dry them out, and reinstall.

that obviously won't work very well if they're paper, but you may even be able to cobble something together to swap in that would be more of a reusable type of filter... ie a scotchbrite pad, etc.
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Old 06-10-2007, 06:39 PM   #19
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im thinking i will just go with the Moroso one when the time comes.... Much cheaper than the Lingenfelter and the Crawford one too to boot.

Just want to find some reviews..

Also figuring out where to put the thing will be a problem while allowing it to drain back tp the block... hmmm.....
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Old 06-12-2007, 11:08 AM   #20
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Quote:
Originally Posted by RainMaker View Post
I'm going to order one and spend a bit of time trying to figure out where to put it. Im still using a TMIC (autoX rules),
Maybe this helps....Crawford is supposedly designing another version of their unit for TMICs. The can is placed on the passenger strut top near the horn. The Buschur Racing thread has a pic.
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Old 07-09-2007, 02:53 PM   #21
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so has anyone tried out the Lingenfelter unit then?
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Old 07-09-2007, 03:06 PM   #22
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I held it in my hands and fiddled with it for a few minutes Car should be up and running soon, the engine is just about ready to drop in the car.
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Old 07-09-2007, 06:41 PM   #23
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Quote:
Originally Posted by jigga View Post
That is a pretty unit with nice AN fittings, however without seeing the interior piping, if it has any, it is hard to tell whether this would work well. I got something really cheap (about $50) at summit and just added some pipe and filter material to make it work. With the Lingenfelter the crank or cam cover vent can be vented to the lower nipple, then the oil entrained in the air must pass through a filter before getting back into your engine. Its a much better thought out system and requires no internal modification.
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Old 07-09-2007, 09:56 PM   #24
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I'll take my Crawford piece thankyou. It is nice to have options though.....
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Old 07-09-2007, 11:58 PM   #25
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Quote:
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I'll take my Crawford piece thankyou. It is nice to have options though.....
you should give me yours!

I found the "lingenfelter" unit locally and will likely pick one up in the next few days me thinks... I think one unit should be good for 800HP going by the power produced by their setups and the number of separators they use...

Or I might purchase two... Not sure still... the local store has just 2 in stock
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