GT28R here, how to fit it? pics!

[midge]

Right opened it up and here it is, how comes the acuator doesnt line up? has someone rotated the inlet bit a bit?

i know i need to rotate it, i think i will have the pipe coming out the top on a 90degree.

How do i change the boost setting? i know on the turbo i have now you wind the acuator in or out, but i cant do that on this one?

what do i do if i rotate the turbo and the acuator doesnt line up again?

and how do i tell what is the oil holes and what is the water holes?

 

[sideways danny]

the housing has been rotated, you may need to fab a bracket to fit it on your clio anyway. Get the housings where you want it with the oil drain facing straight down and go from there. Oil drain is the flange with 2 bolt holes either side of "hole", oil feed is opposite this. Water feeds are on the sides of the core. I think they're M14 threads.

 

[midge]

what do you mean fab a bracket? for what? someone said i can use the actuator from the current turbo ?

All this turbo stuff is new to me!

 

[T.Trophy]

To get the actuator to line up with the wastegate undo the 6/8 bolts that hold the compressor housing on, then once they are slack it should rotate fine.

The best way to identify the oil inlet/outlet is the return outlet will have the oil drain hole with 2 small bolt holes on either side.

On the opposide side of the central housing will be the oil inlet.

The other 2 will be water.

TBH your probably best undoing the turbine and compressor bolts untill the whole unit is free turning (think rubix cube) then attach the turbo to your manifold and tweak untill everything lines up with out interfering with any thing else ie oil line and actuator rod

Be warned that the turbine housing will be a pig to rotate if its a used turbo, also the oil inlet/outlet should be as vertical as possible with no more than a 20 degree tilt (double check the garrett web page)

For more sensible advice join RTOC as theres probably about five/six people on here who know what their talking about when it comes to things like this.

Steve

 

[T.Trophy]

Damn you Danny, beat me to it, think I need to type faster LOL

but he's correct they shoul be a M14X1.5 thread

 

[T.Trophy]

What engine is it going on?

 

[Mark One]

noice. You gonna get it a nice manifold? You'd need a boost control valve to control boost level on that as it doesent have an adjustable actuator. (this is to the best of my knowledge )

 

[sideways danny]

or buy an adjustable actuator

Washers are also a well known "trick"

 

[Oldskoolbaby]

You sure thats a GT28R, not just a regular T28 from a Silvia or the like? Im sure the GT series has external waste gates.

 

[Andrew Cooke]

You sure thats a GT28R, not just a regular T28 from a Silvia or the like? Im sure the GT series has external waste gates.

GT is just the name for new stuff.

It looks to have a 6 bolt turbine housing, which would make it a roller core (or maybe a Chinese copy).

 

[midge]

not a chinese copy, it does have garett onit! its a gt28r from a 200sx (the upgrade they use on them, which so it happens is the same turbo they use on the clio conversions)

Its going on my turbo clio, just using the cast manifold, im to tight to buy the shiny one!

Thanks for the help! i now have everything to go high boost! (except the chip, dont know whether to go for the 260bhp one or the 320bhp one)

 

[sideways danny]

well that turbo will struggle to flow enough for 300 especially on a log manifold. You're looking at about 280 with very good mapping

 

[midge]

Really!? this is the one that bbt use on the 300bhp+ cars ?

thats made my decision easy then! 15psi chip it is! wont have to spend as much on box's

you've been really helpfull with my numerous questions, cheers.

 

[sideways danny]

I've used those turbos many many times. BB have used an even smaller turbo on all the cars i've seen.

15psi should see you at 260 but you'd need custom mapping to see it

 

[midge]

you reckon? coops on the same turbo has about that much at that pressure?

 

[sideways danny]

coops has an RS

 

[midge]

jays said that the diffrence between the r and rs is the fittings i.e i need the bits to bolt on to connect hose's, whast the real diffrence! and how do i tell?

 

[sideways danny]

LOL, there's more to it than that. About 50bhp capability for a start.

The GT28R is a GT2856 (ie 56mm compressor wheel) the GT28RS is a GT2860 (ie 60mm compressor wheel)

That is my t28(non roller bearing) and my GT28RS side by side

 

[midge]

where do i measure it to tell? i searched and found that the rs can flow better, i also read a few remours that the 'r' cant be reuilt!??

 

[sideways danny]

nothing roller bearing can be rebuilt really. Yours is an R

 

[Rage]

well that turbo will struggle to flow enough for 300 especially on a log manifold. You're looking at about 280 with very good mapping

Dependent on the car?
My 200sx ran 340BHP on full boost with the same turbo as this?

The turbo is the standard turbo off the S15 btw

 

[sideways danny]

Dependent on the car?
My 200sx ran 340BHP on full boost with the same turbo as this?

The turbo is the standard turbo off the S15 btw

did it f**k. Utter b****cks

 

[Andrew Cooke]

did it f**k. Utter b****cks

cheered me up no end

 

[midge]

so if a seal goes on the turbo i need to get a new turbo!?

a local guy has a turbo like mine on his 200sx he said it made 380hp, iirc he said something like gt2870r am i right in thinking that means he has a 70mm compressor wheel, so it will flow more air?

this turbo stuff is difficult!

 

[_Tom]

Looks like the standard S15 tubby which is just a roller bearing T28. Will see about 300 at a absolute push on a 200sx. Maybe not even that. Tbh 270/80 is more like it just with a quicker spool.

A gt2870r would struggle to see 380 imo.

 

[Mark One]

LOL @ 340 from a 28R, that's pretty much top 28RS figures.

Have you considered a proper manifold and some decent management? Some of the torque curves i've seen from current log mani-OEM ECU F7P turbos are really nasty.

Either way, the car is going to be a weapon!

 

[midge]

i will get good managment and a subsiquent good map if something turns up second hand, i wont be changing the manifold though, the only other option i know off is £700ish from protoxcide!

 

[Mark One]

see my project thread. Mine was 550. Equal length 316 stainless (the best) custom job. Jon Deeley, really nice guy. postcode NN13 5NU. Give it some thought.

 

[T.Trophy]

this turbo stuff is difficult!

Mate heres the garrett link and it explains what the GTxxxxRS etc stand for

http://www.turbobygarrett.com/turbobygarrett/tech_center/gt_basics.html

Steve