After market FLAT FAN options?

jwerion · 01-24-2006, 05:27 PM

I was wondering if anyone knows of an aftermarket flat fan assembly? Either gear and belt driven like the original or perhaps electric.

david.avery · david.avery's Garage

for a 911 or a Type IV motor?

Stay away from the electric fans, had one from air cooled classics on my 914 2.5 engine in a 550 spyder. It kept the engine cool enough for a drag run, but that was about it. Also, I believe Chris @ tangerine racing (search 914club.com) has a corvair style one that works.

safe · safe's Garage

Do a search, I remember reading a thread about it.
I think the conclusion was that it was really difficult to make one.

Wil Ferch · 01-25-2006, 01:12 PM

Feeler: Electric fan

- Wil

soupbone · 01-25-2006, 01:15 PM

I found on the web an Austrailian Firm that has fabbed one.

http://home.iprimus.com.au/promotive/Porsche/services.htm

Elombard · 01-25-2006, 03:05 PM

OMG that is cool. Is the shroud missing in that picure?

soupbone · 01-25-2006, 03:09 PM

I saved these from their site some time ago.

911pcars · 01-25-2006, 03:22 PM

Nice. I too would like more information. Seems like the gear drive should be enclosed and fully lubricated. Maybe it is.

Sherwood

rouxroux · 01-25-2006, 04:04 PM

I sort of have to take a step back when I see this, because many people in my Corvair circle want to set up fans like a 911, and here we go with 911 owners wanting a Corvair-like setip. It's OK, I like 'em all.

jwerion · 01-25-2006, 04:12 PM

I have e-mailed the Aus company so I will let you know what they say. I would love to have one on my race car.

Jim Garfield · 01-25-2006, 05:06 PM

Here's an English version for a VW engine that looks as though it could be adapted for a 6.

The 964RS and the 356Carrera Replica

ErVikingo · 01-25-2006, 06:21 PM

http://www.ismi.net/riecherttuning/coolingt4.htm

Maltese Falcon · 01-25-2006, 06:25 PM

JWerion...not aftermarket but OE Porsche, still avail from the race parts div -Werkes 2, accross the street in Stuttgart from the main plant. This unit is lubricated off of the OP galley, has a greater airflow delivery ratio (compared to the earlier units) for excellent engine cooling and is tried and true.
I use a horiz fan unit is on my six. The cooling airflow rate @ 8,000 rpm is 1,400 litres per sec, while the fan is only turning 7,000 rpm . These are P factory specs--PM me if you want them emailed to you, as this BB can't load up the jpeg

Marty

Maltese Falcon · 01-25-2006, 06:30 PM

Horiz fan 3.2 , sans plenums, before going into my six
Marty

dd74 · 01-25-2006, 06:47 PM

Marty - PM'd you.

sketchers356 · 01-25-2006, 08:25 PM

Can someone explain the pros/cons of a horizontal fan? Why did Porsche equip the street cars with vertical fans?

jwerion · 01-25-2006, 08:35 PM

Marty, I have sent you a PM
Your motor looks fantastic. May I ask what the flat fan system cost?

svandamme · svandamme's Garage

Quote:

Originally posted by sketchers356
Can someone explain the pros/cons of a horizontal fan? Why did Porsche equip the street cars with vertical fans?

the flat fan robbs more power from the engine
it wasn't a problem for hte 935's because they produce such large amounts of power anyway

but on a street engine , you'de notice

also , production cost, flat fan needs gears , the normal one does not, just needs a belt.

jwerion · 01-26-2006, 06:25 AM

The company in Australia is still working on the Flat fan system and will have some available for sale in about 6 mo.

wcc · 01-26-2006, 06:34 AM

What about a couple small electric fans on the deck lid to pull more air in? Leave the engine setup the same and just add a couple of fans. I deleted my AC system so the engine grill is just open I thought a couple of electric fans mounted in the inside like the condenser was would cool the motor even better. Has anyone done this?