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Old 03-23-2015, 06:18 PM   #61
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It is actually in a reasonably good position where it is, if you must use it. The oil is usually much warmer than the water when under a load. Getting that additional heat into the coolant prior to the radiator will cause the coolant to be at a higher temperature differential with the air flowing through the radiator, allowing it to remove heat more quickly. If placed in the bottom hose, the temperature of the coolant would likely be raised too high reentering the engine to be suitable for cooling. It would also cause the oil to be below optimum temperature at light loads, causing greatly accelerated wear.
I agree, it went where it is for those reasons. That and it's the only place it would fit.... But I've never messed with oil coolers on BPs so I don't know if this one can dump enough heat to keep the oil happy. It seems 200-220*F is a good oil temp to shoot for, but again I am inexperienced here so not really sure what works best.

Regarding all the feedback I've gotten in this thread, I'm going to do back to back testing with this setup and with the factory mixing manifold. As has been pointed out to me, majority is usually correct. I can directly measure heat exchanger effectiveness so I can measure air temps before intercooler, after intercooler, after radiator, AIT's before/after intercooler, and CLT's before/after radiator. When I get all these sensors working and the car sorted, I will test both setups and post the data. Given the amount of things I still have left to do, it could easily be a month to 3 months before I have the data as I'm still building the car and I little problems keep popping up that slow down progress. That will put testing in spring/summer in TX so should be nice and warm.
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Old 03-23-2015, 09:56 PM   #62
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Originally Posted by sixshooter View Post
It is actually in a reasonably good position where it is, if you must use it. The oil is usually much warmer than the water when under a load. Getting that additional heat into the coolant prior to the radiator will cause the coolant to be at a higher temperature differential with the air flowing through the radiator, allowing it to remove heat more quickly. If placed in the bottom hose, the temperature of the coolant would likely be raised too high reentering the engine to be suitable for cooling. It would also cause the oil to be below optimum temperature at light loads, causing greatly accelerated wear.
Yeah, but you registered a whole year later and 1 year in a 8 year time span is 1/8th so he's like at least 12.5% better than you. Just putting that out there.
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Old 03-24-2015, 01:16 AM   #63
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Have you considered installing a heat gun which you could flip on via cabin switch when things get too cold? Just fit it in front of your radiator.
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Old 03-24-2015, 01:55 PM   #64
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Have you considered installing a heat gun which you could flip on via cabin switch when things get too cold? Just fit it in front of your radiator.
Well, one could use an air/water intercooler mounted in the exhaust stream and a pull cable style heater valve to use the wasted heat of the exhaust to pre-heat the coolant and get it up to proper operating temperature when needed.
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Old 03-24-2015, 03:01 PM   #65
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hey pat, have you considered just installing a mixing manifold?
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Old 03-24-2015, 03:02 PM   #66
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Well, one could use an air/water intercooler mounted in the exhaust stream and a pull cable style heater valve to use the wasted heat of the exhaust to pre-heat the coolant and get it up to proper operating temperature when needed.
That is stupid. You could totally put some sensors on it and build a microcontroller to run it. Push cable.....
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Old 03-24-2015, 03:02 PM   #67
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hey pat, have you considered just installing a mixing manifold?
Yes, see post 61.
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Old 03-24-2015, 03:06 PM   #68
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Yes, see post 61.
have you done it yet?
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Old 03-24-2015, 03:07 PM   #69
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have you done it yet?
No, see post 61.

This is getting fun.
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Old 03-24-2015, 03:18 PM   #70
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cause i think you should do it.
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