BB turbos keep spinning for quite a while

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13-08-2008, 11:49 AM

lead_foot

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BB turbos keep spinning for quite a while

BB turbos keep spinning for quite a while, good example in this video:

http://www.youtube.com/watch?v=H1Mry...eature=related

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13-08-2008, 11:52 AM

Christian and Beccy

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They do keep spinning for 30 seconds, sometimes more. Mine does anyway.

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13-08-2008, 11:55 AM

lead_foot

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http://www.youtube.com/watch?v=hTJIn...eature=related

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13-08-2008, 12:03 PM

pa_sjo

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But so do journal-bearing turbos!

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13-08-2008, 12:03 PM

Chip

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Quote:

Originally Posted by pa_sjo

But so do journal-bearing turbos!

Ish, but not as much so

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13-08-2008, 12:41 PM

Stavros

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But TBH, wowee.

Aside from that, the differences a BB core alone makes in actual performance is next to fuck all.

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13-08-2008, 12:42 PM

Mike Rainbird

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Took me a few seconds before it clicked to figure out WTF the noise was the first time I shut down my engine after I had the BB turbo fitted

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13-08-2008, 01:03 PM

RWD_cossie_wil

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does it do any harm, is it worth fitting an oil accumulator for when you shut off with the secondary benefit of getting rid of any pressure fluctuations if you corner hard and uncover the pick up pipe?

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13-08-2008, 01:04 PM

Stavros

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no harm, all turbos will still be spinning once shut off, just bb ones generally do a little longer due to not relying on oil to reduce friction as much

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13-08-2008, 01:11 PM

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RWD_cossie_wil

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Quote:

Originally Posted by Stavros

no harm, all turbos will still be spinning once shut off, just bb ones generally do a little longer due to not relying on oil to reduce friction as much

Was thinking that it wouldn't do any harm as it wasn't under load, but just a thought about the oil accumulator.

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13-08-2008, 01:12 PM

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lead_foot

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I didn't realize they spun for so long TBH. I can hear my GT28RS spin for a while after I've switched the engine off but it didn't seem to spin for that long. It probably is still spinning, I just can't hear it.

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