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Mal Nicholson
TryHard
W.A
TT

Posts: 124
Reg: 01-2009

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 Saturday, February 28, 2009 - 12:33 am, by:  Mal Nicholson (Soarermal) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Ok folks I have been discussing this topic with a few turbo builders here in Perth.

The Pros for Floating:
1) They can be rebuilt
2) they last longer
3) better than Garret
4) price for a T30 Approx $2200 (just the turbo)

The pros for Bearing:
1) Please fill in the details folks!

point 3 was put up for discussion because I have heard Garrets are the worst turbos on the market...can someone clarify with evidence this topic because I can't seem to get info on who's got the best.
Cameron Laufer
DieHard
Queensland
T

Posts: 613
Reg: 12-2007

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 Saturday, February 28, 2009 - 09:07 am, by:  Cameron Laufer (Ivboost) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Pros for ball bearing is they spool up a sh1t load quicker, so you can run a larger turbo and it will spool up much quicker they the equivalent journal bearing turbo. So you get drivability as well as big power giving you a larger power curve.

For example the T04z on my 1.5j see 15psi of boost at 3200rpm with the current tune, put a T04r on my car and I would be surprised to see 15psi at 3800-4000rpm. (T04z is ball bearing and T04r is journal bearing but same specs.)
Richard O'Neill
Tinkerer
QLD
TT

Posts: 18
Reg: 12-2008

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 Saturday, February 28, 2009 - 10:00 am, by:  Richard O'Neill (Rich85) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
who on earth told you garretts werent good turbos? they are the most popular turbo's around for a reason and i have never heard a bad review or of one failing now that i think of it. If i was going to do a single turbo setup a gt3582R would be my first choice.
James Harris
Goo Roo
QLD
SOARERLESS :-(

Posts: 2571
Reg: 07-2005

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 Saturday, February 28, 2009 - 10:55 am, by:  James Harris (Haro) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
These are pretty wicked turbos also

http://www.billetturbochargers.com
Michael Keen
Goo Roo
nsw
Soarer TT

Posts: 1556
Reg: 10-2007

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 Saturday, February 28, 2009 - 12:33 pm, by:  Michael Keen (Spoilt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
richard i fitting that exact turbo right now to my soarer.

bearing turbos can be rebuilt, just not a lot of people can do it.

trust me i just got one done. last week..garrett is probly the largest manafacture of turbo's in the world for a reason, and why do a lot of car makers fit them to there cars? cause they are good reliable gear.

.
Mal Nicholson wrote on Saturday, February 28, 2009 - 12:33 am:

The Pros for Floating:
1) They can be rebuilt -- so can bearing
2) they last longer -- not sure if that true
3) better than Garret --garret is the best.
4) price for a T30 Approx $2200 (just the turbo)-- a new garret gt3582r is $1700 and that bearing. prob the best turbo for 1jz

The pros for Bearing:
1) Please fill in the details folks!

i did above..
Mal Nicholson
TryHard
W.A
TT

Posts: 126
Reg: 01-2009

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 Sunday, March 01, 2009 - 09:06 am, by:  Mal Nicholson (Soarermal) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
ok thanks guys, I got my info from both turbo Tech in Perth and another mob who just deal with Free Floaters. The guys at the second place were the ones who told me the Garretts were sh1t. But I guess you'll say anything to sell one of your own turbos. It's kinda a case of believing your own propaganda.
Costa Tsimiklis
Tinkerer
Victoria
TT 300rwkw

Posts: 88
Reg: 07-2008

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 Saturday, April 18, 2009 - 05:02 pm, by:  Costa Tsimiklis (Driftshop) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Garrett make great turbos that are off the shelf.

Billet turbos are also great turbos that can be ordered custom to your specific requirements.

When you are thinking of GT45+ range turbos the price difference between a Garrett and a Billet is not much.

They also use Borg Warner comp wheels which have a good surge response and can flow more in the top end and at high pressure ratios, mostly because of their trim sizes.

For a Garrett street application, T04Z or T51R is the choice of most tuners. The T51R has slighly more flow than a GT4202 due to its larger trim size. The real benefit of a GT51R is the turbine wheel is ~10mm smaller than the GT42 series making it a very streetable turbo.

Billet 70 series turbos are also very streetable as they have small turbines matched with large compressors in various trims.

I'ts not uncommon to see boost come on 500-750 rpm sooner on a ball bearing unit compared to a journal bearing unit. This translates to around .4-1 second difference in response. After 4500rpm on most 6's - there is basically no difference between ball bearing and journal as the exhaust flow is more than enough to overpower any drag and parasitic losses from the journal bearing. From my research, the Jouranl bearing equivilent to the same turbo in BB, needs about 6,000-10,000 rpm more to maintain the same flow and pressure ratio.

Ball bearing turbos are great for the track and street due to their transient response. For a car with a 4000 stall that's built for drags - you will not notice the difference in 1/4 mile time because you are already making boost when you stall it up and have overcome the parasitic losses from the journal bearings.
Aaron Mead
Goo Roo
NT
Celsior 1UZ-FE Mines, JZZ30 1.5JZ-GTE To4z

Posts: 2267
Reg: 03-2006

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 Sunday, April 19, 2009 - 03:00 pm, by:  Aaron Mead (Aaron) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Garett make a lot of journal bearing cartridges, as well as ball bearing.

The also manufacture HKS specified models for HKS, such as the HKS t04z.

Ive purchased only 3 new Garett turbocharger's without failure in the last 8 years, I think they are the toyota camry's of turbo's :-)
Aaron Mead
Goo Roo
NT
Celsior 1UZ-FE Mines, JZZ30 1.5JZ-GTE To4z

Posts: 2268
Reg: 03-2006

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 Sunday, April 19, 2009 - 03:01 pm, by:  Aaron Mead (Aaron) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Mal Nicholson wrote on Saturday, February 28, 2009 - 12:33 am:

I have heard Garrets are the worst turbos on the market



Sounds like something Hypergear would say :-)
Andrew Stewart
TryHard
Queensland
Manual GT-T VVT-i Single Turbo

Posts: 344
Reg: 06-2007

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 Sunday, April 19, 2009 - 04:53 pm, by:  Andrew Stewart (Daboom) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
As Aaron said, Garrett make alot of turbos for "aftermarket" manufacturers, HKS and greddy/trust (when they were alive.) Also most trucks you buy on the market all have Garrett turbos. so i think you will find manufacturers purchasing turbos for OEM applications will not use rubbishy turbos.

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