GT Series Non-Ball Bearing/Ball Bearing

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04-23-2008, 11:11 AM

#21

Soul Coughing

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Quote:

Originally Posted by slimjim8201,Apr 23 2008, 02:04 AM

Corrected.

good catch! The link between my brain and keyboard was chilling out for a bit on that one!

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04-23-2008, 02:17 PM

#22

Spoolin

Join Date: Mar 2003

Location: Sellersburg, IN

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Quote:

Originally Posted by 8kGoodENuff,Apr 22 2008, 10:28 AM

Oh man... you just gave me a blast from the past moment there back to my Bearings class back in college.

I haven't heard that term in a while... lol.

So maybe those $500 can be spent better somewhere else.

Jon... you're the man dude!!!!... haha.

Andre

Put it this way, I'm making almost 600 whp with my 60-1 turbo on 25 psi of boost and I am fully spooled by 4700 rpm.

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04-23-2008, 02:38 PM

#23

Spoolin

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Quote:

Originally Posted by rob!,Apr 23 2008, 10:02 AM

no, i got the kit with a sc61 which is around the same as a gt35 non ball bearing.

here is a graph from my tuner with a gt35r:

Here is my graph with sc61(non ball bearing):

There is a 2 psi difference but you get the idea

This is not a good comparison of ball bearing and journal bearing turbo's unless both turbo's have the exact same A/R housing's, compressor and turbine wheels. Every one of these factors play a huge role in spool up.

Now, take a GT35 and a GT35R that have the exact same turbine's, compressor's and A/R's and run the test and you will find the variables to be much closer. I'm willing to bet only maybe a 100 rpm spool difference.

Also, if you dont granny shift and know how to drive, you won't lose very much spool at all with a journal bearing turbo so that is non sense.

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04-23-2008, 03:12 PM

#24

rob!

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I agree... Spool up time will not be dramatically decreased with a non BB gt35. I think the only difference you will notice is between shifts, and like spoolin said, if you shift fast that will not become an issue.