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Posted by: naro914 Aug 12 2013, 07:01 PM

Need some ideas for a friend with a 2.4 liter 6 in his 914. He doesn't want to hack into the car and mount a cooler up front and run lines back and forth - wants to keep the body stock with no holes cut all over, wants to keep heat, and its a street driver for fun stuff with all interior in it, not any sort of track car or anything like that.

He's having all sorts of heating problems - oil getting way too hot...

What has anyone done to mount a cooler in the back that's worked? Where, how, and what cooler?

Thanks

Posted by: JmuRiz Aug 12 2013, 07:03 PM

Rich Johnson has a contact that makes the one he uses on his hopped up 3.0 engine with carbs.
a914guy at aol(dot)com I think.

Also have him make sure there aren't leaves an crap under the fan shroud, it seems to happen to all 911 engines at some point.

Posted by: chad newton Aug 12 2013, 09:47 PM

Tell the dude to get over it, it's just a 914. You never know, in 50 years it may actually be worth something.

Posted by: chad newton Aug 12 2013, 10:23 PM

I don't see why you couldn't fab up a mount and air scoop behind the trans there should be room unless running convensional exhaust.

Posted by: chad newton Aug 12 2013, 10:25 PM

Also that one guy on either mine or your other thread had one mounted that was fan cooled too. That would work as long as he wasn't racing it.

Posted by: Elliot Cannon Aug 12 2013, 11:19 PM

NACA scoop in the rocker panel ducted to a small seatrab cooler under the trunk.


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Posted by: McMark Aug 13 2013, 12:14 AM

For a street driver, I wouldn't expect a 2.4 to overheat, unless something is wrong. I know of a street driven 3.2 without additional cooling. I agree, check the engine and tuning first.

Posted by: Racer Chris Aug 13 2013, 04:10 AM

On a 3.6 we installed, we placed two of the Setrab dual fan pack coolers on either side of the trans, above the exhaust.
We also added heat shields mounted on top of the headers.
A thermostatic switch turns on the fans above 180F oil temp.
This has worked well in Boston area traffic.

Posted by: naro914 Aug 13 2013, 05:54 AM

It just got a complete rebuild literally last week. It ran hot since the beginning when it was installed years ago from a different mechanic/builder. New build replaced a lot of things that the original guy did wrong, but still same issue. Saw temps of 230-240 driving it home from the install, and he does have a cooler on it mounted underneath (I don't have pics). Can't figure out what's going on...

Posted by: JmuRiz Aug 13 2013, 08:16 AM

Does it have the under-body cooling flaps?

FYI, this is what Rich's cooler looks like:



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Posted by: jeff Aug 13 2013, 08:22 AM

The perfect solution..


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Posted by: tradisrad Aug 13 2013, 08:37 AM

Here is a topic I started several years ago: http://www.914world.com/bbs2/index.php?showtopic=108328&hl=oil+cooler

Posted by: pcar916 Aug 13 2013, 09:27 AM

Here's a thread (Paddock) about a transaxle cooler system.

http://www.914world.com/bbs2/index.php?showtopic=161520

I would locate an extra engine cooler in the right wheel well in a second. In fact I've considered locating the rear engine cooler (sandwich adapter from the oil console located between the mufflers) into that space as well.

It would simply have to be ducted and fan-driven to share space effectively with the trans-cooler (in my case).

Posted by: Elliot Cannon Aug 13 2013, 01:48 PM

I don't think it matters where the cooler is located. Most important is the volume of air flowing through the cooler and a route for the air to flow smoothly and swiftly out of the cooler after it passes through.

Posted by: carr914 Aug 14 2013, 04:53 AM

Need to address why it is getting so Hot before putting a Band-Aid on it

Posted by: naro914 Aug 14 2013, 05:48 AM

thoughts?
Stock (factory) 914/6 oil tank to engine. Everything in engine was checked and cleaned, new P&C's, heads rebuilt, new valve guides/valves. Engine oil cooler cleaned out. Not much else there to check.

Posted by: Justin Fischer Aug 14 2013, 06:48 AM

Are the temp gauge and sender correct?

Posted by: shuie Aug 14 2013, 07:10 AM

I would expect anything more than a completely stock low compression 2.4T with all of the engine bay seals and everything else in place and in perfect working order to need an external cooler. Hotter plugs, missing seals, Summer, traffic, etc., can make even a stock T motor run up into the 250 range pretty quickly.

Posted by: r_towle Aug 14 2013, 07:38 AM

I visited a hotrod shop and saw something like this cooler mounted on the frame.
Seems this would easily fit behind the rocker covers....even two of them could fit end to end.

Should be enough, with proper venting of the rocker, to provide plenty of cooling I would think.
The hot rod guys swear by them.

http://lowbugget.com/inlineoilcoolers.html

Rich

Posted by: pcar916 Aug 14 2013, 08:05 AM

My first six engine was a Bruce Anderson "E" spec 2.7L. It ran just fine without an external cooler for years, even after moving from San Francisco to Arkansas. But short of a bad thermostat, I'd run synthetic oil and check everything noted already above.

If all else fails, an auxiliary cooler in addition to the Behr behind #6 will likely help. It made all the difference with the 3.6. I had to run an external cooler in the front for that engine anyway (no internal cooler) and it was about 25,000 BTU's short of the cooling capacity I needed in really hot weather sitting at traffic lights, and on the track.

The additional cooler solved the problem and it's in the back of the car. Like I said above, I'd put it in the right wheel well away from any heat this time.

Good luck!

Posted by: chad newton Aug 14 2013, 08:23 AM

Ring gap??? I'm no engine builder but I know that it is critical with every ever engine.

Posted by: jeff Aug 14 2013, 09:00 AM

If it his engine has been running hot from the start it could be too lean... Without airflow cooling will be tough, increasing oil capacity is about the only thing you can due .. On the Subaru STI they have a water misting setup that sprays the intercooler,when he is sitting in traffic maybe that would help?