Ceramic Turbo Replacement

[MrStabby]

Price indication;

-7s which come with actuators = $2600

-9s $2740 + $280 for new actuators = $3020

20 year old actuators are not worth using as the springs are likely to have softened with all the heat cycles, and have softened differently so you'll get surging as they fight.

[Don Dada]

Garrett GT2860R 707160 -7 = R34 N1 (14411-AA403)

Garrett GT2860R 707160 -5 = HKS GT2350

Garrett GT2859R 707160 -9 = HKS GT-SS (Garrett without actuator)

Garrett GT2859R 780371 -1 = HKS GT-SS (Garrett with actuator)

[MrStabby]

http://gcg.com.au/Turbo/ViewProduct.aspx?PCategoryID=2

FYI GCG are now showing the -9s as 2860s not 2859s. Maybe common sense is making a comeback?

[Don Dada]

There is no such turbo according to Garrett site

[R31Nismoid]

What the US lists them is ofter different to what AUS lists them.

NFI why - disco perhaps might know.

[discopotato03]

Yep ears burn ...

The GT2859R's complete assemblies part number 707160-9 is actually a GT28 turbo because of its turbine wheel .

In Garretts GT ball bearing range there are two GT28 turbine wheels , both are 53.8mm major diameter and 9 bladed but the trim sizes are 62 or 76 .

So when looking at GT25 or GT28 BB turbos note the turbine diameter and trim and blade number , 53.0mm and 62T and 11 blades = GT25xxR where 53.8mm and 62 or 76T and 9 blades = GT28xxR .

GT = Garrett Technology , 25 or 28 etc = turbine family , 59/60/71/76/82 etc = compressor wheel major dia in mm , R = rolling element ball bearings .

Soo since you can buy those GT2859R's AKA GTSS's at a Garrett price thats what I'd do . If you get a little too much grunt just back the boost off a little , I wouldn't buy lower tech units to make a power ceiling .

If you order these GT2859R's as Pn 707160-9 you don't get waste gate actuators , if you order GT2859R's as Pn 780371-1 you get the same units with Garrett supplied actuators . I suspect HKS order the former part number and fitted their own whatever spec actuatotrs .

My contribution .

Probably the wrong place to ask but I'm in the poo ATM over a new hybrid I had built and have to have it changed again , turbine and its housing . I could really use a second hand S15 Silvia spec BB turbo or turbine housing , the one I have was machined to suit a larger turbine than I need and you can't reliably sleeve them and re-machine for a smaller trim turbine .

Some years back I went on a mission to list all the GT30 turbine based turbos with unit and cartridge part numbers and I hope to do the same with the more useful members of the GT25 and GT28 BB turbo families in the near future - HKS and Garrett marketed ones .

Thanks in advance , cheers Adrian .

Edited February 5, 2010 by discopotato03