Hey,

I just had to pull my S5 turbo out and i though while it out i will get the AirReseach to4 .60 cover and S-trim 48mm inducer wheel fitted but when i looked at the two my stock ( assuming ) S5 compresspor wheel is closer to 58mm ( inducer diameter ) is this correct and if so how is going to smaller (BY ALMOST 10mm) yet probably more efficient compressor wheel an upgrade?

Ive taken a few photos for your infomation. I know its no digital verniers but its good enought for you to get the Idea of the size variation?

Thanks
( please excuse the angles on the photos, it was hard trying to line up the tape while having to look through the viewfinder as the lcd screen is broken )

 

Looks like your turbo already has an upgraded compressor wheel and housing.

 

Yea thats what im leaning towards also but trying to find the stock inducer size on this forum is a nightmare.
What a crock. I thought i was gona go faster. Now i need a even bigger turbo!!!!!!!!!!!

 

+1, thats def not a stock comp housing/comp wheel.

 

seams to be the equivilent to a TO4B V trim compressor wheel.

Stoakd haha

 

that is definetly NOT a stock turbo, looks like a BNR stage 2 (or higher) upgraded stock turbo . . .

 

http://www.turbocharged.com/catalog/compmaps/fig6.html

This is the compressor map for this turbo, well for the compressor anyway. Can somebody decifer for me please, Looks like its quite the kick **** free find and will suit my freshly stage2 ported and doweld motor down to the ground. I dont think the 660cc secondardys are gona cut the mustard tho haha

 

You sure it's a Garrett S-trim?
That looks pretty damn big.

The S-trim produces similar numbers to the stock HT-18 wheel, so the size should be pretty similar.


-Ted

 

Sorry ted, maybe i confused you.

Neither of these is stock,

As you can see there is the Garret T04 sitting on top of what i belived to be my stock turbo. It has a 48mm inducer and specs out the same as the S trim

The Larger ( and dirtyer ) turbo i have determined to have a comp wheel similar to the V trim as it as a 55( approx, using a tape measure) inducer and 70mm exducer

 

Sorry I just cant help myself...

 

If you look (don't have to try hard), your 'stock' turbo has A/R .60 stamped into it. So of course its going to be larger than that .48 next to it.

Someone built a hybrid for you!!

 

Yea i actually brought this turbo second hand from a mate who imported and i didnt take much notice to the sizing when i brought it, was more concerned about checking play in the shaft ( which there was and still is none )

I dont get the pawnd thing? is that aimed at me? If so i would have thought im lucky to get a hybrid for the price of a stock turbo.

Maybe im trippin

 

To do this accurately, you need to pop the compressor housing off and measure the wheel...

http://fc3spro.com/TECH/TURBO/tmodels.html


-Ted

 

yea i did that thanks ted but i didnt have any veriners so it was inacturate anyway

 

Yeah, the differences can be minute, so you really need a pair of dial calipers to do this.
You can try go down to your local hardware store and buy those plastic ones.
They are accuate enough, and it should cost you under $10.


-Ted