Overheating, Engine / Cooling |
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Overheating, Engine / Cooling |
ash00 |
May 2 2016, 12:15 PM
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#1
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Newbie Group: Members Posts: 22 Joined: 29-March 16 From: Dixon, CA Member No.: 19,810 Region Association: Northern California |
Hi All,
After a month and a half of business trips, I finally got to drive my the 1970 914 that I'm still learning about. One thing is clear, that the restoration was half-assed, and rather than blaming the PO, I have to figure things out the hard way. Hopefully before the fact. I'm trying to not let this leave a bad taste in my mouth of the 914 experience. The recent issue is overheating. This is my first car in the aircooled world, and the car was equipped with a rebuilt 2.0L with the weber downdraft setup in place of the FI. It runs well when warmed up, but during driving, I can't drive it for more than 10 minutes without the gauge being pegged to the red. I'm hearing things of "false air" and such. Pardon my ignorance, but I need a place to start looking for info. Is there any documentation or info out there on how the air cooling is managed, and what hardware is there for me to test / check? Any tips are appreciated. Thanks, Ash |
era vulgaris |
May 3 2016, 12:09 PM
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#2
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J is for Genius Group: Members Posts: 982 Joined: 10-November 13 From: Raleigh, NC Member No.: 16,629 Region Association: South East States |
You won't be able to see the actual flaps as they're under the cooling tin. But you will be able to see the bar that links both flaps together. It'll run across the engine behind the oil filler tower. You can see it in the pics SirAndy linked to.
If you do have the cooling flaps installed, then you should also check to see if you have the thermostatic bellows that operates them. The thermostat is kind of below the pushrod tubes on the drivers side, it looks like a set of bellows, and there should be a wire that runs from it up through the cooling tins and connects to that crossbar that the flaps are attached to. |
ash00 |
May 3 2016, 02:23 PM
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#3
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Newbie Group: Members Posts: 22 Joined: 29-March 16 From: Dixon, CA Member No.: 19,810 Region Association: Northern California |
Awesome- that helps.
I assume that the flaps are actuated from red lever by the shifter? |
era vulgaris |
May 3 2016, 04:41 PM
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#4
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J is for Genius Group: Members Posts: 982 Joined: 10-November 13 From: Raleigh, NC Member No.: 16,629 Region Association: South East States |
Awesome- that helps. I assume that the flaps are actuated from red lever by the shifter? No, as I mentioned, the flaps are actuated by the thermostatic bellows, which is attached to the lower part of the engine on the driver's side, kind of below the pushrod tubes. The bellows open and close with the heat of the engine, closing the flaps when the engine is cold and opening them when it is warm. This process is completely autonomous of any input from you. If your thermostat is missing or broken, or if the cable from the thermostat to the flaps is broken, the flaps automatically default to the open position to prevent overheating of both the cylinder heads and the oil, as the flaps deflect cooling air to the cylinder heads and the oil cooler. That's why it's necessary that you have flaps if you have the stock oil cooler, because without them cooling air will not be directed toward your oil cooler. |
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