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zztot's Avatar
Join Date: Mar 2007
Location: south carolina
Posts: 1,582
914-6 aux oil cooler

Need help. I am ready to install front oil cooler in 14-six. HAving trouble deciding how and where to run lines and hook in. Have all parts from "knowledgeable" supplier (i think) but having some apprehension.

1. Car has ex a/c hole in back of trunk so my idea was to run lines down center of pan in groove. Have to modify steering box cover plate but minor .....
Not sure this is good idea or not.

2. Seems there is not enough space to run under rocker panel (through gussets. Do you run one down each side in this case or ?????

3. Not sure where to hook into existing lines ...

4. Have thermostat and feel that should be at rear.

I am trying to do minimal disfigurement to car and have clean as possible set-up. Haven't done this for a while so any detailed guidance would be appreciated ( including site to explain on Pelican but it is for four cylinder .)
Old 10-09-2007, 11:11 AM
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Dave at Pelican Parts's Avatar
Join Date: Dec 1969
Location: Silly-Con Valley
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Cool the oil after it has been through the engine, before it returns to the tank. That means unhooking the return line and running the hoses that go to the front of the car to each end. The thermostat goes near the engine, and should be set up so that cold oil goes straight back to the tank, while hot oil goes to the cooler.

I believe that you can chop up the supports enough to get one line under each rocker cover. Failing that, giving up one of your heater channels is not the worst idea. Either way, you will have some challenges when it comes to geting the oil from the corner of the rocker up into a part of the wheel well that is out of the way of moving parts.

Ducting to make sure air goes through the cooler, and not around it, is very important.

You can use the under-the-rear-trunk cooler setup for a Six as well as for a Four, but it will not provide the best cooling. The best cooling will be from a well-done front-mounted cooler with openings in the front of the car and ducting to force that air to go through the cooler. In some cases, "not the best" may be good enough--but if not, you have to do the work all over again.

Pelican Parts 914 Tech Support

A few pics of my car:
Old 10-09-2007, 07:26 PM
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JW Apostate
trekkor's Avatar
Join Date: May 2004
Location: Napa, Ca
Posts: 14,071
Track car? What motor?

Is the car overheating now?

Mounting the t-stat in the trunk is no big deal.
Big opening. Big exit. Shrouded.

Have you seen the copper hardlines behind the rocker panels?

My set-up keep oils temps below 210 degrees under 100 degree weather and 30 minute 5-7k rpm track sessions.

'74 914-6 2.6 SS #746
'01 Boxster
'73 914
Old 10-09-2007, 08:49 PM
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canna change law physics
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Join Date: Jul 2000
Location: Houston, Tejas
Posts: 37,361
I upgraded my 2.0 to a 2.7 with RS pistons and cylinders,2.4 crank and rods, and S cams. I use the standard oil cooler with no problems.
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
Old 10-29-2007, 06:00 PM
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Groucho Marxist
Tobra's Avatar
Join Date: Aug 2005
Location: Carmichael, CA
Posts: 32,505
You can drill through the supports as Dave suggests, factory did that for the lines on the drivers side for the fuel evaporation charcoal filter vent.
"Keep your eye on one thing and one thing only: how much government is spending, because thatís the true tax ... If youíre not paying for it in the form of explicit taxes, youíre paying for it indirectly in the form of inflation or in the form of borrowing."
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Old 10-31-2007, 07:45 PM
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