bought an 85 cab w/a 993 engine

gduke · 07-05-2003, 06:06 PM

I'm new to this board. own a beautiful burgandy 85 cab. w/a a 95 993 engine. the car has 68000mi & engine 21000mi. believe me the car is fast. it has ssi headers w/ chip, k&n air filter, red koni's, Welt. strut brace. turbo tie's are on order along w/an oil cooler fan kit. hopefully, once the tie rods and oil cooler fan kit are installed the project will be complete.

my major concernem is keeping the oil cool on hot sumer days. i've been taking it for sunday drives & the oil temp. stayed bellow 9:00 until the temps reached 85 deg. and the oil temp gauge touched the 10:00 mark(250 deg). so, the car's been sitting in the garage until the oil cooler fan & fan relocatoion kit arrive.

I really don't have that much eperience w/ porsche, and never thought temp would be an issue. So, does anyone have any comments or or experience w/ this type of engine upgrade? Hopefully, the fan wil solve the problem.

BTW i also orderred a scoop that replaces the parking light.

cowtown · 06:44 PM

You're right to add the fan. Beyond that, you can get into a bunch of different solutions. Some mount another Carrera cooler in the left fender, and some change to an RS-style front bumper with a center-mounted Setrab-type cooler. I'm going through similar deliberations with my '75 Turbo engined car.

Your car sounds like a ton of fun! And you're on the right track in dealing with the temps. 250 is "too damn hot" according to Bruce Anderson. BA is basically the authority on all of the older Porsches, and I'd recommend his book, "911 Performance Handbook".

Welcome to the board, and have fun.
Colin

EDIT: PS: it would be great to see some pictures.

CrossT · 07-05-2003, 06:50 PM

Welcome! This board's a great resource, if you hadn't already realized.

I have an 86 (same oil cooler w/o fan) and want to add a fan and scoop. I get regular +100 degree temps here in the desert and heat is my current concern. I see the 10:00 mark in my stock eng on the once in a while.

What kit did you order and how do you plan to install?

welcome again,
todd
86 cpe

gduke · 07-05-2003, 07:16 PM

Thanks for the responces. I orderred the kits from Pelican, ofcourse. its 3 kits. a fan kit, fan installation kit, & horn relocation kit. the 3 kits cost under $500 and I'm having my mechanic install them. it might sound like alot of money but, i already have so much rapped up in the car, especially the engine. spending $500 to prevent $7500 damage makes sense. Plus, its the last of the upgrades as everything else seems to be working great.

I looked at the setrab coolers and if the fan doesn't work i'll order one.

once again thanks for your advice.

k9handler · 07-05-2003, 09:05 PM

just good fun, "Holy Crap Fast" is a good term to explain it!

Mocal cooler, vented front valance, should help ya out.

Milu · 07-05-2003, 10:18 PM

Sounds like a very fun car. Post some photos please. I believe the 993 engine can happily run at higher temperatures than a 3.2, might be worth checking out. As an aside I bet whoever fitted the 993 engine with SSI headers had a bit of an adventure! Is it emissions legal?

Jack Olsen · 11:35 PM

The problem is that the 993 motor didn't come with an engine-mounted oil cooler. They had to make room for the power steering pump. The 964's and 993's had better front coolers, to compensate, but the thing that made them so good was Porsche redesigning the front end so that a large amount of air moved over and through the coolers.

Unfortunately, the front fender wells of pre-1990 cars are stagnant, air-flow-wise. If you're just using the car for street driving, a single Carrera cooler with a fan might be enough. You're going to need to make sure there's air moving through it, though. The fan is a good start, but it only moves air over one section of the cooler. You might want to consider ducting air into the front fender, and making sure there's no way for the air to escape other than through the cooler. This means ducting down below the cooler, as well as all around it. A foglight hole (minus the foglight) is a good way to bring the air in.

If you track the car, it won't stay cool enough with the single cooler. At least, I don't know of anyone who's managed to adequately cool a track-driven 3.6-liter translplant with a single fender-mounted Carrera cooler, fan or no.

Moses · 07:52 AM

If you want to keep a stock look, you can put a front cooler behind a 930 style valence. There is also a company called Lemke that makes a valence/cooler combination with your application in mind.

I have a 3.6 in my '83. I have a Carrera cooler (Elephant Racing- "bigmouth") with fan in the fender plumbed in series with a 20" B&B cooler in front. The cooling is good with this setup.

sammyg2 · 07-06-2003, 07:28 AM

Seems like a perfect application for chuck Moreland's finned tubing.

Moses · 07-06-2003, 07:54 AM

Quote:

Originally posted by sammyg2
Seems like a perfect application for chuck Moreland's finned tubing.

Excellent idea if he doesn't want to use a front cooler.

pbs911 · pbs911's Garage

Nice purchase. Please post some pics.

You are tight that temp is not an issue when these cars are set up properly. Jack probably has the most experience on this issue since he was sort of a pioneer in the 3.6 translplant and cooling area. It's common for most all transplants to go with a front mounted and fender cooler before the motor is even installed. So some searches and you'll find several solutions. But I would suggest going with two coolers, either two fender mounted or one fender mounted and one front mounted.

I run a front mounted and fender unit with fan with my 93 3.6. Also a cool collar. Normal driving on mild days puts the temp at about 8:00 o'clock. On hot days the temp creeps up to about the 9:00 o'clock position when sitting in traffic but drops like a rock when moving.

You'll find 250 on these motors is too damn hot. Good job of parking it until you solve the problem.

ischmitz · ischmitz's Garage

Welcome to the 3.6 madness....

When I had to deal with oil cooling I had to start from scratch. I didn't even have the plumbing and/or the front oil cooler to begin with. I decided to go with a Mocal nose-mounted cooler without loosing the front stock valance. See my web site for details: oil cooling It keeps the temps at the 8 o'clock during "normal" driving and a tad higher when you stay above 5k for most of the time.

Have fun,
Ingo