200 compressormap...

[Jukka Majanen]

Hi

Gerard asked K26 map, You can find it at SJM:

http://www.sjmautotechnik.com/turbo/k26.html

also there are other maps, like 20V 3 B:s K 24.

When You check and compare those, You can
see 24:s compressor side is bigger and works
at ratio 2 (=1bar) little better than K 26.

At V 0.12, ratio 2 K24: eff is 0.7 and n is 110k
At V 0,12, ratio 2 K26: eff is 0.6 and n is 105k

So there is no big deal in that compressor side,
if You don´t get over 2.5 ratio.

Where You can see the difference: 20V:s K24
has smaller turbine/housing so it reacts better,
but, because it`s much more restrictive it will
limit max gasflow (=hp) at full power. Many 20VT
owners have (w/ chipping) chanced there bigger
housing/ex.man. or lowered the turbine profile.
(f.e to put to S2´s 3B  RS´s K28 and ex. man.
there are lots of ++hp without any other mods)

I guess, whatever You see at comp map, that 
bigger K 26 without any modifications is enough 
till 2.2 (absolut) bars and ++150 kW.

best
j-pm