Sam Amporful

iTrader: (13)

thanks guys 4 the help

Braineack

iTrader: (62)

I thought they were too small..."even for a miata"

paNX2K&SE-R

iTrader: (8)

HUH? When did I ever say that an SR t25 was too small for a Miata???

Braineack

iTrader: (62)

if a t28 is small, what would make a sr t25 better suited?



the wheel on a T28 looks mighty big in comparison. But wait, that picture is labeled T3 50 trim! Well, as you should know, a T28 wheel is a t3 wheel. As T25 + T3 = T28. While still sharing the same standard T25 turbine.

paNX2K&SE-R

iTrader: (8)

If someone put down skyline t28 (.42/.48) next to an SR t25 (.80/.64) and made me pick, I'd take the t25 every time. I maintain my position that an RB20 t28 is too small when there are better options for the same price. Now if we were talking about an S14/S15 t28 or a GTi-R t28 (what I run) thats a completely different ball of wax.

Braineack

iTrader: (62)

But doesn't the skyline turbo have a T3 footprint? .48 in T3 = .64 in T25

Since A/R is defined as: the inlet cross-sectional area divided by the radius from the turbo centerline to the centroid of that area. And we all know a T3 inlet is much larger than a T25, so the numbers are not directly comparable.

And even if that is not the case, buy a sr20 turbine housing and put the t28 in it

So, I maintain my position, that the turbine is the same, and the compressor wheel is a T3 wheel. Which makes the T28 a larger turbo with better potential.

paNX2K&SE-R

iTrader: (8)

Alright I guess its probably silly to debate this without access to compressor maps and/or same car same dyno comparison numbers anyway.

Braineack

iTrader: (62)

do you want me to post the compressor maps? Was my picture of the two wheels not enough?

paNX2K&SE-R

iTrader: (8)

Actually I'd prefer if you would dyno your car with both setups back to back just to be sure. j/k