i am racing with a stock bore/stroke b16 engine
the engine is built 8,5cr eagle rods,je pistons,and so on.
it is running now with turbonetics 60trim turbo,60ar cold side,stage3 exhaust side,63ar
i need more power but i am afraid that bigger turbos would boost later,and may have a big lag.

 

the 42 on my racecar makes more power down low, then my t3/t67 did on my street car. and obviously kills the t3 uptop.

 

42r!

 

S366 w/ the bigger turbine wheel or S372.

 

When I had a turbo stock bore/stroke B16 in my last car, the largest I ever went was an SC6176e from Precision. Lag wasn't bad at all and the turbo made a lot of power up top. Granted it's not a huge turbo but it will support more than what you have now I believe and it was very livable.

 

Sounds like you would be happy with a GT35r.

 

i would stick witha t3/67 turbo..it would respond great to your mildly built set up and should make a pretty decent numbers on the dyno..

 

i have tryed 6176,but it spooled too slow.under 7000i cant get maximum boost.

 

i think that will be my choice.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ivt-t &raquo;</TD></TR><TR><TD CLASS="quote">i have tryed 6176,but it spooled too slow.under 7000i cant get maximum boost.</TD></TR></TABLE>

You revved to 7000 and still didnt get full boost with a sc61???

 

no.
i get boost like this:
6000rpm 14psi
6500rpm 19psi
7000rpm 22psi
7500rpm 26psi
8000rpm 26psi
8500rpm 26psi
9000rpm 26psi
9500rpm 26psi