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> Full flow oil system, is this bs or what?
kdfoust
post Mar 21 2004, 03:47 AM
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I'll be getting my case back from RIMCO pretty soon and I'm thinking about the oil system. I'm planning to run a 30mm Schradeck (sp?) pump. I've read a number of threads about "full flow" oiling for TIV engines and I guess I don't get it.

For full flow on a TIV you do what?
Plug or modify the oil filter bypass valve that I've circled below? Then what?
Modify the oil pressure relief valve (new spring I guess) to accomodate higher pressure? Then what?

At what pressure does the stock cooler blow open like a pan of Pop-Magic pop corn?

TIA,
Kevin


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ThinAir
post Mar 21 2004, 07:47 PM
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In the Grassroots Motorsports Magazine "Project 914" story on their engine they say this:

Shine Racing Service "removes the oil filter bypass assembly. From the factory, Porsche provided a ball-and-spring assembly to allow oil to flow around the oil filter should it become clogged. While this sounds great in theory, adding something as simple as an external oil cooler will change the pressure to this bypass, causing the oil to simply go around the filter. While we are not presently using an external oil cooler, this oil filter bypass modification is something that Shine does to every 914 engine he builds."

The specific location that they show in the picture is in the top of the oil filter mount. From what I've seen elsewhere about this it simply a matter of taking a punch of some kind and closing up the space.

It seems to me that if you are already in the habit of changing your oil & filter regularly and generally watching over your baby (like adjusting valves regularly and always inspecting the oil screen for debris) that no longer having the relief would be no big deal because the likelihood is so low that you would ever have a clogged filter.
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kdfoust   Full flow oil system   Mar 21 2004, 03:47 AM
Mark Henry   Oh boy…you can get several different opinions on...   Mar 21 2004, 08:05 AM
SLITS   I always thought that full flow meant that all the...   Mar 21 2004, 08:56 AM
Mark Henry     Mar 21 2004, 09:21 AM
cgnj   Tom Perso did this to his 2270 that was originally...   Mar 21 2004, 10:09 AM
Jake Raby   I do it to every engine that we build that goes up...   Mar 21 2004, 10:52 AM
kdfoust   It seems that there are a couple of methods here (...   Mar 21 2004, 01:03 PM
Mark Henry  
QUOTE
  Mar 21 2004, 05:29 PM
ThinAir914   In the Grassroots Motorsports Magazine "Project 91...   Mar 21 2004, 07:47 PM
kdfoust   Hey Ernie: Is this what they work on (circled in ...   Mar 21 2004, 07:51 PM
ThinAir914   Kevin - That's the place! From the pictur...   Mar 21 2004, 08:04 PM
kdfoust   Okay so I get the mods that you do to have full fl...   Mar 22 2004, 06:14 PM
Racer Chris   It doesn't take much pressure to open the bypa...   Mar 22 2004, 08:35 PM
jkeyzer   I had no idea there was a valve in there!...   Mar 22 2004, 08:40 PM
Brad Roberts   Wait until you see a car blow the filter off at th...   Mar 24 2004, 12:34 AM
ThinAir914  

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