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Oil coolers
I have what I believe to be an extra 944NA oil cooler and housing. I am curious as to whether or not I should use this on my 951 project engine.
I am fairly sure that the oil cooler housings are the same between the NA and Turbo cars... indeed, the NA cooler seems to fit perfectly on the engine block, and I can't think of any reason that the oil cooler housings would differ... but, as far as I can tell, the oil coolers themselves are slightly different size and shape. What would be the reason for a difference between NA and Turbo oil coolers? Would the 951 design simply be newer and more efficient?
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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07-05-2006, 10:59 AM
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I'm not really sure why they are different, but if I were building a 951, then I would use the 951 oil cooler. One thing I am certain of....you don't want the seals to fail. Currently doing that repair along with replacing the rest of the seals.
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually |
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07-05-2006, 11:42 AM
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Cars & Coffee Killer
Join Date: Sep 2004
Location: State of Failure
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I thought the NA used an oil-to-coolant oil cooler and the 951 used an oil-to-air oil cooler?
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Some Porsches long ago...then a wankle... 5 liters of VVT fury now -Chris "There is freedom in risk, just as there is oppression in security." |
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07-05-2006, 11:55 AM
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I'm not sure, legion.
I'll tell you what I do know: The NA and 951 oil cooler housings mount to the same spot on the engine block. THe oil filter screws directly into the oil cooler housing. Pelican does sell an EXTERNAL oil cooler. I am not sure if this is a replacement for the stock unit, or if this is a factory setup. If it is factory, what would go on the block where the NA oil cooler is mounted? EDIT: The parts catalog claims, "The 944 Turbo came stock with an external oil cooler"... hmm. So where does this external cooler mount? What goes on the block where the NA oil cooler is mounted? Just the housing? Or another oil cooler?
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. Last edited by CJFusco; 07-05-2006 at 12:39 PM.. |
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07-05-2006, 12:35 PM
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Cars & Coffee Killer
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Nothing?
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Some Porsches long ago...then a wankle... 5 liters of VVT fury now -Chris "There is freedom in risk, just as there is oppression in security." |
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07-05-2006, 12:40 PM
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Well, where the NA oil cooler would mount, there are direct ports into the 951 block that match perfectly with the NA oil cooler. I suppose it's possible that these attach somehow to the external 951 oil cooler...
... I am wondering if anyone out there can supply a pic from their own 951 block?
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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07-05-2006, 12:54 PM
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Oh no, you have to put something and you can't just leave the oil cooler out. That will certainly mix water and oil. Then you'll be replacing bearings all over again. I am not familiar with turbos, so I don't know about the external one...but it could be a second one. I know that the cooler the oil the better it is for the car...to a certain extent of course.
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually Last edited by Razorback1980; 07-05-2006 at 01:00 PM.. |
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07-05-2006, 12:54 PM
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Join Date: Mar 2003
Location: West Haven, Connecticut
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On my s2 it has a different oil cooler housing. It is a lot thinner and just has 2 holes for the external oil to air cooler. I COULD attached the old style oil to coolant cooler with a different housing but that would just be stupid! I would use the oil to air cooler as it is better and you dont have to worry about leaks.
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-2002.5 GTI VR6 24V 6SPD -Kalahari Beige 89 Porsche 944S2 -87 VW GTI 1.8 16v -2007 Ford PIMP(free)star ...company car.... -1999.5 Jetta VR6 |
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07-05-2006, 12:57 PM
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So, you are saying that the S2 has a different housing, which the oil filter screws into, and on that housing there are two holes that attach to the external filter? It would appear that the same could be said about the Turbo, judging from the evidence.
Is there any reason to think that the NA oil-to-coolant oil cooler wouldn't work on a 951 block? Sure, there is a greater chance of leaks, but would it be drastically less efficient? If the answer is "don't use the NA housing at all", I think the way to go would be a Motec external oil cooler; it would be more efficient and would cost about $300 less than an OEM external 951 oil cooler.
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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07-05-2006, 01:08 PM
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External is more efficient and especially if you have a turbo.
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-2002.5 GTI VR6 24V 6SPD -Kalahari Beige 89 Porsche 944S2 -87 VW GTI 1.8 16v -2007 Ford PIMP(free)star ...company car.... -1999.5 Jetta VR6 |
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07-05-2006, 01:29 PM
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2007 Porsche Cayman S
The Viridian Falcon
SOLD! -- The Purple Pig
SOLD! -- Mighty Mouse
SOLD!! -- Alpine Wolf
