hi cow,
I'm not a sifu, but i've been reading about sr20det's for a few years..
the u13 type, was made from 91' to 95'
redtop
206hp@6000rpm
1998cc
t25 turbo
the u13 is a bluebird not a silvia, silvia's was s13 they are slightly different
meaning
u13 206hp
s13 202hp
also u13 is front wheel drive
s13 should be rear..
Both have a compression of 8.5:1
and same turbo version. T25.
There's a lot of other differences, and similarities.. but it depends on what you want to know.. Are you looking for a engine conversion?
You can ask me anything regarding this engine, and i'll try and answer.. Also try google
and sr20forum.com
its america based website, but technical wise its full of knowledge.. :)
ciaos