{"id":12911,"date":"2012-05-25T09:56:43","date_gmt":"2012-05-25T14:56:43","guid":{"rendered":"http:\/\/caddyinfo.com\/wordpress\/?p=12911"},"modified":"2012-05-26T19:00:22","modified_gmt":"2012-05-27T00:00:22","slug":"cadillac-sts-v-intercooler-pump-bucket-test","status":"publish","type":"post","link":"http:\/\/www.caddyinfo.com\/wordpress\/cadillac-sts-v-intercooler-pump-bucket-test\/","title":{"rendered":"Cadillac STS-V intercooler pump bucket test"},"content":{"rendered":"

UPDATE:\u00a0 Re-ran the test with a change in the test setup, yielding closer to the expected results.\u00a0 See Below.<\/h2>\n

I hate surprising test results.<\/p>\n

I was expecting to see around 3-4 PSID system head, and the Bosch OEM intercooler pump doing 5-6 gpm.<\/p>\n

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Cadillac, in bucket, out bucket, extra coolant<\/p><\/div>\n

This morning I ran a bucket test on my Cadillac STS-V. A bucket test is a simple way to measure gallons per minute of flow in an operating system. To do the test, measure how much fluid comes out of the system over what period of time. Record the result in gallons per minute.<\/p>\n

First I calibrated my bucket. I used a “TO” bucket that was shaped like a cylinder, with no slope to the sides. That simplifies measurement. I took a large 1\/2 gal kitchen measuring cup and put 1\/2 gallon of water in “TO” my bucket. Then I measured how many inches of depth were in the bucket. My bucket measured 1&1\/4″ per 1\/2 gallon. I added another 1\/2 gallon and noted that the bucket was at 2.5″; good.<\/p>\n

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Next, I put the STS-V up on jackstands, and removed the undertray. I disconnected the hose from the hard pipe out at the bottom of the V coming out of the intercooler, and put a “out” hose there leading to my “TO” bucket. I put the hose that had been connected there in my “FROM” bucket. I added coolant to my “From” bucket, and ran the test.<\/p>\n

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The pump in the test is the Bosch OEM intercooler pump. It is pumping through the intercooler, and pulling from both heat exchangers so that the flow should exactly model what the pump sees in operation.<\/p>\n