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Old 06-16-2016, 04:07 PM   #15
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I actually did some acceleration time test after my install. I probably could search the forum and find it but It was measurable. The other thing, for the fastest acceleration up to highway speed, keep the economy button off.
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Old 05-03-2018, 11:26 AM   #16
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Source Engineering Fan

I know this thread on engine fans is two years old, but I am considering the Source Engineering Fan for my 2005 Meridian Itasca Cat C7 engine. Just wondered if the members in this 2016 thread are still happy with the performance and cooling capability of these fans. Also has anyone installed this in a freightliner chassis with a Cat C7 engine? Thanks Jim
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Old 05-03-2018, 04:00 PM   #17
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Only thing I would watch for is reduced cooling when things are very hot. We've used a couple of similar products for drag racing older motors (where fan was bolted to water pump as opposed to an electric pump as most newer vehicles use.) It will slightly increase horsepower. In the front, it will increase noice since the blades are thinner. And in the middle of the summer it will definitely raise engine temps. You have to give up something to reduce that parasitic drag you speak of. That "something" is air flow.
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Old 05-03-2018, 09:29 PM   #18
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Did you check to see if it's offered for your coach. It was designed initially for a Roadmaster chassis (old Monaco chassis). My coach ran exactly the same temps with the new fan as it did with the Source fan.
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Old 05-03-2018, 09:58 PM   #19
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Yes I contacted Source Engineering and they said they can make a fan for my coach. He said they have made fans for several owners of Freightliner chassis with no complaints of inadequate cooling. I am still on the fence on pulling the trigger on this project but hoped to here positive feedback from some owners in these older posts. I sent a few private message queries today to some on this thread who installed fans two years ago. Jim
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Old 05-04-2018, 12:19 PM   #20
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"Highhood".....Cooling won't be an issue. The only concern you should have is how much power it will return to your coach. The fan doesn't add horsepower, it returns power you lose from turning a large poorly designed fan.

Keep in mind, the smaller the motor and the higher it revs, the fan works better and returns more power. I had the ISL 400 which is a big loping motor, consequently, my return of horsepower was 25HP. In the smaller Cummins ISC, (similar to your C-7) the fan returned 40 HP.

I originally looked at installing an electronic fan (brain farting on the brand) that was computer actuated and only ran when necessary. It claimed a 1/2 mpg increase. As I thought about it, I realized that it would always run when hill climbing. I decided the Source fan would be a better fit.

I did my own install. On my rear radiator coach, I was able to pull the bedroom floor panel and I carefully, using an air wrench, removed the fan bolts, slid the fan off and installed the new one.
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