Author Topic: Alternate EGR use (Read 5244 times)

dillenger1 · « **on:** January 09, 2008, 04:46:05 pm »

Has anyone ever thought of or used a egr for an oil cooler?Seems like it would work.only thing is i dont know about the pressure needed to keep oil flowing inside.Or oil changes,what would happen there?

jtanguay · « **Reply #1 on:** January 09, 2008, 08:28:27 pm »

are you talking about the EGR cooler which uses engine coolant to cool the exhaust gas?

i fail to see how it could be utilized... unless all you want is to pump coolant through the pipe and have oil instead of coolant. but then again... thats just like the oil/water cooler on our engines anyways.

dillenger1 · « **Reply #2 on:** January 10, 2008, 02:34:33 am »

Right.Just run oil instead of exhaust.The passage seems small enough,and we have a couple of these laying around.I was thinking it would be more sufficient then the sandwich style oil cooler.

somolovitch3 · « **Reply #3 on:** January 11, 2008, 04:18:31 am »

How much more oil would you have to add to make up for the amount in the hoses/"cooler"?

How would you "feed" the device with oil, and where would you mount it?

Interesting idea...................................

saurkraut · « **Reply #4 on:** January 11, 2008, 06:21:47 am »

If you run coolant from the engine through it, its pritty much the same thing the oil 'warmer', on the oilfilter mount, does all ready with marginal success.

Whats the advantage.

I wonder if it can handle the full pressure out put from the oil pump when it wasn't desigened to do so. The existing oil warmer has enough trouble with this and it was designed to do it.

dillenger1 · « **Reply #5 on:** January 11, 2008, 07:12:51 pm »

Your right.I was thinking ,this was before i bought a oem cooler.I guess it would just be one more thing to worry about!I susspose if you absolutely cant find the oem syle(immpossible)from all the 2.oltr gassers

dillenger1 · « **Reply #6 on:** January 11, 2008, 07:16:31 pm »

Hey kraut do you still have the audi 5000?Im getting a k26,and was wondering if it has internal gate?I didnt see one in my pic.When does it start to spool up and make power?

saurkraut · « **Reply #7 on:** January 14, 2008, 06:06:18 am »

It has an external waste gate.

jtanguay · « **Reply #8 on:** January 14, 2008, 06:15:57 am »

Quote from: "saurkraut"

If you run coolant from the engine through it, its pritty much the same thing the oil 'warmer', on the oilfilter mount, does all ready with marginal success.

Whats the advantage.

I wonder if it can handle the full pressure out put from the oil pump when it wasn't desigened to do so. The existing oil warmer has enough trouble with this and it was designed to do it.

well this cooler is made of a strong alloy to withstand some high temps... much higher than oil will get. so i would like to say it would work no problems... but the oil psi does pose a bit of an issue.

the fact that the oil cooler is an oil warmer only has to do with the fact that the coolant running through it has just come out of the head, and then into the radiator... if you were to somehow re-route the lines you could get more of a cooling effect. libbybapa had a thread going on about this... search it up :wink:

saurkraut · « **Reply #9 on:** January 14, 2008, 07:00:20 am »

Quote from: "jtanguay"

Quote from: "saurkraut"
If you run coolant from the engine through it, its pritty much the same thing the oil 'warmer', on the oilfilter mount, does all ready with marginal success.

Whats the advantage.

I wonder if it can handle the full pressure out put from the oil pump when it wasn't desigened to do so. The existing oil warmer has enough trouble with this and it was designed to do it.

well this cooler is made of a strong alloy to withstand some high temps... much higher than oil will get. so i would like to say it would work no problems... but the oil psi does pose a bit of an issue.

the fact that the oil cooler is an oil warmer only has to do with the fact that the coolant running through it has just come out of the head, and then into the radiator... if you were to somehow re-route the lines you could get more of a cooling effect. libbybapa had a thread going on about this... search it up :wink:

Do you know what this 'stronger alloy' is, and since it sees about 14 Psi, of water pressure, it will majically withstand 50+ Psi of oil pressure? A feat not totally achieved by the intended design of the oil warmer.

jtanguay · « **Reply #10 on:** January 14, 2008, 07:03:59 am »

not sure what the alloy is, but it is capable of withstanding about 800F+ and is way more than the oil will ever get.

copper has no problem holding city pressure around here which is about 70 psi. copper is pretty damn soft... i have no doubt that the egr pipe can withstand 40-50 psi and possibly up to 80 psi, but for extended periods... who knows?

maybe someone should try to put 50+ psi of air (and finding a way to keep it from escaping) to see how well it holds. 50+ psi of air is just as good as 50 psi of oil.

the main failures of the current oil warmers is people torquing the oil filter on too tight, and just normal aluminum metal fatigue either from too much heat+pressure, or very low temps driving hard (hot coolant with cold oil... hmm cold aluminum likes to crack not bend...)

saurkraut · « **Reply #11 on:** January 14, 2008, 12:36:42 pm »

Yup, got copper pipe in my house too, for the water and crapper. Whats the point?

Instead of theorizing if 800°F at 14 psi is the same as 200°F at 50 psi, why not just get one of those purpose built, thermostatically controlled oil coolers.

Look. There is one on Ebay now as we speak:

http://cgi.ebay.com/ebaymotors/OIL-COOLER-KIT-VW-MK1-MK2-RABBIT-GOLF-SCIROCCO_W0QQitemZ130189804123QQihZ003QQcategoryZ46095QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Got one for my '79, which only gets driven during the warmer months. My '84 is my winter beast, and an oil warmer is appropriate.