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Gtir Motorsport club » General Discusion » Gtir related Discussion » T28 ball bearing turbo?

T28 ball bearing turbo?

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1 T28 ball bearing turbo? on 21st July 2015, 3:35 pm

Digitalfaze

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Is the standard t28 in the gti-r a rollerbearing turbo? im convinced its a journal bearing but someone else says its roller?

N14 GTi-R (1990-94) T28:
Compressor: T3 Super-60, 60 trim 60mm 0.60 A/R BCI-1 compressor.
Turbine: T-25, 79 trim 53.8mm 0.86 A/R turbine housing, Inconel Turbine Wheel.
Stock Boost: 7 psi
Safe Boost: > 13-15 psi After that The Turbo is past it's efficiency
Max Boost: 17 psi
HP Ratings: 290 - 300 RWHP
Type of Bearings: Journal Bearing
Upgrades: Replace compressor Housing w/ S14 T28 and Max RWHP can be bumped upto 320

Guy refers to the T28r as being rollerbearing turbo?

http://www.avaloncreative.co.uk

2 Re: T28 ball bearing turbo? on 21st July 2015, 4:01 pm

Bones

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Sure standard isn't roller

3 Re: T28 ball bearing turbo? on 21st July 2015, 4:11 pm

Digitalfaze

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Yeah i searched around and everywhere say its not

http://www.avaloncreative.co.uk

4 Re: T28 ball bearing turbo? on 21st July 2015, 4:23 pm

Stu

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Standard isnt roller bearing.
The hybrid ones are roller bearing.


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5 Re: T28 ball bearing turbo? on 21st July 2015, 4:42 pm

Digitalfaze

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yeah thought so, thanks Smile

http://www.avaloncreative.co.uk

6 Re: T28 ball bearing turbo? on 21st July 2015, 5:29 pm

Mr B

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gtir technician
gtir technician
some hybrids are just 360° journal thrust rather than standard which is 270° journal bearing.

7 Re: T28 ball bearing turbo? on 21st July 2015, 6:59 pm

johnny gtir

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Probably had it rebuilt

8 Re: T28 ball bearing turbo? on 21st July 2015, 8:53 pm

lenzo

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No t25 is roller bearing
You can get a conversion done which is ball bearing from Owens development

9 Re: T28 ball bearing turbo? on 22nd July 2015, 7:55 am

Digitalfaze

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yup the gti-r is a high flow turbo according to some source? i guess thats what the "T3 Super-60" means?

http://www.avaloncreative.co.uk

10 Re: T28 ball bearing turbo? on 22nd July 2015, 8:07 am

Guest


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Yeah was gonna say I can confirm 100% the stock t28 isn't a roll bearing turbo, still we have an easier time than the skyline boys with their ceramic turbos they like to shit themselves on a regular basis haha!

11 Re: T28 ball bearing turbo? on 22nd July 2015, 6:47 pm

Gostek

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@Digitalfaze wrote:
Guy refers to the T28r as being rollerbearing turbo?

I think that t28r it's standard s15 silvia turbo and this is roller bearing job and apparently it's not bad turbo

12 Re: T28 ball bearing turbo? on 22nd July 2015, 9:45 pm

lenzo

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No t Series turbo is ball bearing it's only the gt series that are ball bearing the t series are Journal bearing only

13 Re: T28 ball bearing turbo? on 22nd July 2015, 10:59 pm

Gostek

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Hmm i thought that r on the end was for ball bearings ah well you learn something every day Smile


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14 Re: T28 ball bearing turbo? on 22nd July 2015, 11:04 pm

lenzo

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You can by the conversion kit for a t28 will become a ball bearing turbo

15 Re: T28 ball bearing turbo? on 23rd July 2015, 3:27 pm

Digitalfaze

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@lenzo wrote:No t Series turbo is ball bearing it's only the gt series that are ball bearing the t series are Journal bearing only

the s14 t28 is a ball bearing turbo?

http://www.avaloncreative.co.uk

16 Re: T28 ball bearing turbo? on 23rd July 2015, 3:29 pm

Gostek

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Events Organiser
As far as know no...Only s15 is ball bearing


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17 Re: T28 ball bearing turbo? on 23rd July 2015, 6:53 pm

lenzo

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The s15 come standard with a gt28r

18 Re: T28 ball bearing turbo? on 23rd July 2015, 6:56 pm

lenzo

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Not a T28 no T28 is a ball bearing turbo only the GT series

19 Re: T28 ball bearing turbo? on 23rd July 2015, 7:02 pm

Gostek

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http://www.turbobygarrett.com/turbobygarrett/garrett_nomenclature
http://www.turbodynamics.co.uk/technical/technical-info/garrett-turbo-tech/garrett-gt-vs-t-series/

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