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> Show me your front oil cooler..., ...running through the fog light grills
GTeener
post Jul 12 2006, 04:27 PM
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I'm considering adding oil coolers behind my front fog light grills. (IMG:style_emoticons/default/idea.gif)

Who else has done this?
What's it look like?
Are you satisfied with the results?
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Mountain914
post Jul 26 2006, 12:01 PM
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QUOTE(dgw @ Jul 25 2006, 11:08 PM) *

heres mine.

Note, the car has a 3.0, the former owner says he never had heat problems, I've only driven it twice, although on the hottest two days in the history of the Santa Cruz mountains.

It does seem very exposed thought, that worries me.


I would be worried about that one too ! (IMG:style_emoticons/default/unsure.gif) If it didn't get the fins bent and beat, it would sure collect dirt, bugs, mud, small rodents, and maybe little old ladies in green plymouth valients. But - if the lines themselves do a good percentage of the cooling, and not just the fins, then it shouldn't cause a lot of issues unless something hits hard enough to create a leak, then you could have big problems if you don't notice the pressure drop and the temperature climb to shut it down (but of course the 3.0L has a dry sump oil system that I am not real familiar with). Either way, most folks would say move it back inside the car to protect it, but they couldn't argue with the air flow it gets !
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GTeener
post Jul 26 2006, 12:46 PM
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QUOTE(dgw @ Jul 25 2006, 10:08 PM) *

heres mine.

Note, the car has a 3.0, the former owner says he never had heat problems, I've only driven it twice, although on the hottest two days in the history of the Santa Cruz mountains.

It does seem very exposed thought, that worries me.


(IMG:style_emoticons/default/blink.gif) Sure is just hanging all out there... Not something I will do with my car. One well placed rock or someone backing into the car and it's busted (IMG:style_emoticons/default/unsure.gif)
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PRS914-6
post Jul 26 2006, 06:23 PM
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Good timing on this thread, I am just wraping mine up. For a 3.6, I did what I feel will yield the best cooling since it is the only cooler this motor gets.

I moved the cooler back a ways so the opening in the front of the car would not have to be enlarged to match the cooler grid. I tried to avoid mounting it too far forward.. There will be plenty of inlet air to the front of the cooler and the spare tire will still fit. (space saver). There is plenty of room to add fans if needed behind the cooler but I am trying to avoid them since they block air through the cooler by 20-30% when they are not running.
(IMG:http://www.sayegh.org/Paul/914/914pics/coolermounting.jpg)
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(IMG:http://www.sayegh.org/Paul/914/914pics/cooler.jpg)
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(IMG:http://www.sayegh.org/Paul/914/914pics/coolercover.jpg)
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(IMG:http://www.sayegh.org/Paul/914/914pics/coolerfinished.jpg)
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(IMG:http://www.sayegh.org/Paul/914/914pics/coolerfromtop.jpg)
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(IMG:http://www.sayegh.org/Paul/914/914pics/frontholes.jpg)
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The cooler flange is bolted at the top and the bottom sits freely in a "U" channel that is rubber lined. This allows the body to flex without twisting the cooler
(IMG:http://www.sayegh.org/Paul/914/914pics/cooler%20bottombracket.jpg)
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GTeener
post Jul 26 2006, 06:32 PM
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QUOTE(PRS914-6 @ Jul 26 2006, 05:23 PM) *

Good timing on this thread, I am just wraping mine up. For a 3.6, I did what I feel will yield the best cooling since it is the only cooler this motor gets.

I moved the cooler back a ways so the opening in the front of the car would not have to be enlarged to match the cooler grid. I tried to avoid mounting it too far forward.. There will be plenty of inlet air to the front of the cooler and the spare tire will still fit. (space saver). There is plenty of room to add fans if needed behind the cooler but I am trying to avoid them since they block air through the cooler by 20-30% when they are not running.




Looks nice. So does the hot air flow back out the front holes too? or are there holes in the bottom of the trunk to let hot air out?
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PRS914-6
post Jul 26 2006, 06:35 PM
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Everything in front of the cooler is a pressure zone and is sealed right to left and up and down around the cooler so no air can bypass around the cooler. The air will exit through the cooler and out the bottom of the trunk. Yes, there will be holes in the bottom of the trunk to let the air out, they are just not shown. It's not a track or race car and won't have an air dam so I am not worried about lift at all. The amount of air and resulting lift that you can push through the actual "net" air opening in a cooler would be insignificant for a street car. (in my opinion)
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GTeener
post Jul 26 2006, 07:03 PM
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QUOTE(PRS914-6 @ Jul 26 2006, 05:35 PM) *

Everything in front of the cooler is a pressure zone and is sealed. The air will exit out the bottom under the sheet metal behind the cooler.


Into the trunk? So no under car air pressure?
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Trekkor
post Jul 27 2006, 01:03 AM
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I was talking to Gary from G/D Racing. He has a fantastic 935 clone...600hp+.

It has a front cooler opening that I can can nearly crawl through (IMG:style_emoticons/default/laugh.gif)
The air dumps out under the car and it's a non-issue. No lift.


KT
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GTeener
post Jul 27 2006, 11:21 AM
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I know a lot of you are fans of Mocal and Fluidyne coolers, but I've been told that RX7 coolers work just as well. Anyone have experience with using an RX7 cooler setup?
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PRS914-6
post Jul 27 2006, 11:37 AM
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I researched the coolers extensively. The Mazda coolers are apparently VERY good. If you can get a Mazda Comp cooler (not being made right now) you would have the best. I could not get a big enough one out of an RX-7 to suit my needs and bought the big Mocal but if I had a 3.2 I would just get one from a Mazda dismantler. with a known engine that had not blown.
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xitspd
post Jul 27 2006, 11:39 AM
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QUOTE(GTeener @ Jul 27 2006, 10:21 AM) *

I know a lot of you are fans of Mocal and Fluidyne coolers, but I've been told that RX7 coolers work just as well. Anyone have experience with using an RX7 cooler setup?


I raced for four years with a RX7 front mounted oil cooler with a 906 spec engine. Never had problems at Willow or Phoenix. Stay under a 3.0 in engine size.

Dan
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GTeener
post Jul 27 2006, 11:47 AM
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(IMG:style_emoticons/default/clap56.gif) thanks for the confirmation guys.

(IMG:style_emoticons/default/confused24.gif) Where can I get a space-saver spare?
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Cap'n Krusty
post Jul 27 2006, 12:01 PM
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QUOTE(GTeener @ Jul 27 2006, 10:47 AM) *

(IMG:style_emoticons/default/clap56.gif) thanks for the confirmation guys.

(IMG:style_emoticons/default/confused24.gif) Where can I get a space-saver spare?


Partsheaven. The Cap'n
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McMark
post Jul 27 2006, 12:11 PM
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Are we talking about the collapsible spare that need to be inflated on the side of the road before use? Or do I have that wrong?
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GTeener
post Jul 27 2006, 12:35 PM
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QUOTE(McMark @ Jul 27 2006, 11:11 AM) *

Are we talking about the collapsible spare that need to be inflated on the side of the road before use? Or do I have that wrong?


Ya, that's the one. What's a good pump to use?
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PRS914-6
post Jul 27 2006, 12:37 PM
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Another note on the Mazda. They are a double pass cooler meaning that there is a divider in the middle and the oil goes in and out the same side. The oil goes through the bottom half and returns on the top half (or vice-versa) so the oil flow capacity is restricted to half the cross section of the cooler.

The big Mocal goes in one side out the other side and if I was looking for a large volume cooler, I would go the Mocal route since the oil can flow the entire cross section of the cooler and not just half. It only applies to high volume situations though.
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GTeener
post Jul 27 2006, 12:45 PM
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QUOTE(PRS914-6 @ Jul 27 2006, 11:37 AM) *

Another note on the Mazda. They are a double pass cooler meaning that there is a divider in the middle and the oil goes in and out the same side. The oil goes through the bottom half and returns on the top half (or vice-versa) so the oil flow capacity is restricted to half the cross section of the cooler.

The big Mocal goes in one side out the other side and if I was looking for a large volume cooler, I would go the Mocal route since the oil can flow the entire cross section of the cooler and not just half. It only applies to high volume situations though.


Good information. Thanks. I don't think I have a high volume situation. I only have a 2.2S engine.
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mikelsr
post Jul 27 2006, 02:37 PM
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I am glad that this thread is still going. I bought a 2.7 /6 a month ago and found that it is running hot in this weather. I figure it is running about 250 degrees by looking at where my temp gauge is at and the markings on the temp gauge template for the 911 (I can't remember who posted it earlier this week or last week). I ordered a new oil pressure and temp gauges and sending units to get a better handle on where things are at.

I will be using this car at AXs and DEs. I am not too worried on the AX course but I am very concerned about the DEs. I am supposed to go to Gingerman in MI on the 5th and 6th but I think I am going to cancel because of this heat problem. Even if I could get the parts in tomorrow I won't have time to get things engineered and installed.

This has been a very good thread and I will read it again before I decide on what I need to do.

Thanks,
Mike
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John
post Jul 27 2006, 02:57 PM
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Wow Paul, that looks great. I really like the shape of the ductwork. It seems so familiar....

Pic from my BLOG

Which cooler are you going to run?

I can't even get my car over 180 degrees in 95+ degree heat this summer.... MOCAL rocks.
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GTeener
post Jul 27 2006, 03:33 PM
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QUOTE(JOHNMAN @ Jul 27 2006, 01:57 PM) *

Wow Paul, that looks great. I really like the shape of the ductwork. It seems so familiar....

Pic from my BLOG

Which cooler are you going to run?

I can't even get my car over 180 degrees in 95+ degree heat this summer.... MOCAL rocks.



Wow! That is a clean setup Johnman (IMG:style_emoticons/default/thumb3d.gif)

What's the front look like?

Where do the lines run?


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PRS914-6
post Jul 27 2006, 03:52 PM
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John, I used a Mocal PC-10 crossflow
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