rear differential cooler

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Oct 21, 2008 | 07:37 PM

vstol

Thread Starter

Melting Slicks

Joined: Mar 2002

Posts: 2,526

Likes: 104

From: Stafford Va

rear differential cooler

Anyone have a rear differential cooler /pump set up on their C4?

Oct 21, 2008 | 08:13 PM

pkazsr

Le Mans Master

Joined: Jul 2007

Posts: 5,356

Likes: 2

From: No HOA, New Hampshire

Cruise-In X Veteran

St. Jude Donor '09

I have never heard about a rear cooler or why it would be needed.

Oct 21, 2008 | 10:48 PM

the blur

Melting Slicks

Joined: Apr 2004

Posts: 2,775

Likes: 138

From: cyberspace NY

I have 10000 track miles, and my rear hasn't exploded in my 96.

although I know the C5's need one, but the C4's seem pretty good.

Oct 22, 2008 | 12:25 AM

Calderone

Le Mans Master

Joined: May 2007

Posts: 8,448

Likes: 27

From: Valparaiso

Never heard that before

Oct 22, 2008 | 01:57 AM

rodj

Le Mans Master

Joined: Aug 2000

Posts: 8,838

Likes: 31

From: Australia

Quote:

Originally Posted by pkazsr

I have never heard about a rear cooler or why it would be needed.

Common practice on road race / Nascar types where extended hi- speed running is done .
Keeps diff oil cool same as trans cooler does.

Oct 22, 2008 | 05:49 AM

vstol

Thread Starter

Melting Slicks

Joined: Mar 2002

Posts: 2,526

Likes: 104

From: Stafford Va

Although not really required, I am going to add it to my 64 Grand Sport since they had it to include the cooler mounted behind the rear window. My car has a 96 GS setup under it. So does anyone have a setup, I have seen it in the forum where the inlet was the fill plug and for the outlet they welded a bung in the case.

Oct 22, 2008 | 01:22 PM

Tom Piper

Safety Car

Joined: Feb 1999

Posts: 3,504

Likes: 4

From: Mexico Beach FL

My concerns would be:
1) Diff fluid might be to heavy to flow through a cooler.
2) Are you going to put a pump in the line?

Tom Piper

Oct 22, 2008 | 04:30 PM

vstol

Thread Starter

Melting Slicks

Joined: Mar 2002

Posts: 2,526

Likes: 104

From: Stafford Va

A pump is a requirement to make it work. MOCAL has a pump that will work.

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Oct 22, 2008 | 04:45 PM

Aardwolf

Race Director

Joined: Jun 2004

Posts: 13,961

Likes: 707

From: WI

Just a suggestion, toss a temp sensor at it first to see what is needed. It may run cool and you'll save yourself a lot of time and money. Or the temp data could help tell you what size and type of cooler you'll need.

Oct 23, 2008 | 10:53 AM

#10

vstol

Thread Starter

Melting Slicks

Joined: Mar 2002

Posts: 2,526

Likes: 104

From: Stafford Va

good suggestion, however I am going to install it even though I probably do not need it. MOCAL pump would work since its made for pumping thick oil, will use a small cooler about 5 x 7" because it has to sit ontop of the car for authenticity. One setup welded two 3/8 FPT aluminum bungs in the case and used the filler plug for the temp guage. Again if anyone has a different setup pls let me know.

Oct 23, 2008 | 12:22 PM

#11

cmcbunch

Instructor

Joined: Jan 2008

Posts: 163

Likes: 1

From: Idianapolis Indiana

I've been considering this for a while. If anyone has any install pictures I'd love to see em.

Oct 23, 2008 | 12:32 PM

#12

the blur

Melting Slicks

Joined: Apr 2004

Posts: 2,775

Likes: 138

From: cyberspace NY

I'd like to see you run a cooler during the winter time..

Oct 23, 2008 | 03:35 PM

#13

vstol

Thread Starter

Melting Slicks

Joined: Mar 2002

Posts: 2,526

Likes: 104

From: Stafford Va

with a on/off switch and a temp gauge no issues in the winter. There is some good info on the autocross/racing forum. I will request to end this discussion.

Oct 23, 2008 | 03:48 PM

#14

Aardwolf

Race Director

Joined: Jun 2004

Posts: 13,961

Likes: 707

From: WI

Quote:

Originally Posted by vstol

with a on/off switch and a temp gauge no issues in the winter. There is some good info on the autocross/racing forum. I will request to end this discussion.

Update it with pix instead!

I'd really like to see the data from your temp sensor!!!

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