Turbo Engine Build Recommendations

[Sideswipe]

My motor is puffing smoke and I'm pretty sure the rings are bad. I want to keep my motor streetable and well mannered. The motor wasn't originally built for boost, but it did run good. If there are things I can do to make the motor more efficient for boost I'd like to take this opportunity to do it.

What I'm currently running:

CB Performance Bubble block 1955cc, forged crank, H-beam rods, Mahle forged pistons. Not sure of compression ratio, but I believe around 8.5:1
Older CB 044 heads

I think the cam is an Eagle 2235 (bought motor from someone and don't know for sure):
Adv. Duration 270°
Dur. @ .050" 236°
Lift @ cam .374"
Lift w/1.1:1 Rocker Arms .411"

T3/4B stg1 S trim .48ar Turbo from SL1
Megasquirt setup from Dubshop with wasted spark and dual 40mm IDF style throttle bodies
Meth/water injection

I'm thinking about going up to a 2110 (78x94) and maybe changing the cam if there's a better choice for boost.

Any thoughts from the turbo gurus?

[Schweg]

Not a turbo guru by any stretch so I can’t help answer your question but did you have something you didn’t like in your previous setup?

That may help some smarter people then me to answer your question.

[Sideswipe]

Would be nice if boost came on a little sooner, started boosting around 3000 rpm. Other than that, maybe a tad more power.

[woodsbuggy1]

I am no guru by any means but have used turbos on several VW engines, a smaller turbo would provide quicker boost. How much power are you looking to make? It would be less expensive to rering your engine and get a smaller turbo to fit your needs, you could sell your current turbo to ofset cost.
Good Luck
Kenric

[buguy]

Hummm. Seems like a pretty good combo to me. How much boost were you running? With that compression and water/meth I would think 20 psi would be no problem. Should be an easy 275hp+.
If you are going to go through all the expense and trouble to build another engine, why not go to an 82mm crank? Maybe 92mm thick walls?

[Sideswipe]

Yeah, about 20-23 lbs of boost. Maybe I'll just freshen up the top end....

[buguy]

Yeah man you should be knocking on 300hp's door. But that 82mm crank would slip right in there!

[madmike]

78x92 thick wall's total seal 2nd ring
FK8 cam w/1:4's
40mm TB's may be to small?
your turbo will work, but may run out of 'steam'? but will come on boost sooner
if that's the case look for a turbo with a .57-.63 turbine housing