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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 09-05-2006, 10:30 AM   #11
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Quote:
Originally Posted by BillBoost37
Quote:
Originally Posted by willwren
You can spin the supercharger MUCH faster without creating more heat.

I had a cooler running SC than a stock pulleyed M90 at WCBF '06 this year. In fact, I may have had the coolest running supercharger there, despite having the fastest spinner (screamer).
B.. I thought we read the same temp..
Our CASINGS read the same temp. But my nosedrive and TB ends were both cooler. How can a nosedrive with less oil in it, less mass, and spinning 40% faster produce LESS heat?



The INLET is typically the hottest surface. Mine was the coolest. In fact, mine was cooler than Matt'* by 15F (on his stock-pulleyed M90), despite his cooant temps being lower than mine.
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Old 09-05-2006, 02:21 PM   #12
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Is it possible to retrofit an oil cooler to the Eatons? I know the blowzilla that was on BadSSEi blew a fitting when we saw it run because it was bouncing off the revlimiter (tires changed the FDR too much). It had tapped holes to run lines for an external cooler. I'm not sure how pressurized the system is in the M62/90 or if it'* possible to find a spot that would flow without a pump..
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Old 09-05-2006, 02:31 PM   #13
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I see no reason or benefit to cool the oil whatsoever, nor do I see any negative effects from the temperature our nosedrives typically run at. I seriously doubt it would have any effect that could be measured on the boost charge post-rotor.

The heat in the Supercharger comes from primarily the inlet restriction/rough casting, and second from the compression of the air itself. Not from the nosedrive friction/oil temp.

I know it'* been awhile, Jason, but if you go to some of my more recent engine bay pics, you'll see several small temperature strips all over my top end. I've been tracking SC/TB temps for quite some time, trying to determine what is the biggest issue, and what heats up FIRST, second, third, etc, then what heatsoaks from a nearby hot spot, rather than producing it'* own heat.
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