2.2L Super 60 @ 20psi = 245hp / 290lbft ?

[Opticon]

Just hit a dyno with the Omni and I'm checking with the community to verify the results.

I have a 2.2L with a Turbonetics Super 60 (.63 A/R) pushing through a stock 2pc intake, swirl head with a stock cam, and a stock exhaust manifold.
Everything else is opened up (big intercooler, 53mm TB, 3" swingvalve and 3" exhaust).

3 consistent runs with my A/Fs steady at 11.5 dipping to 11.1 after 5000rpm.
Torque peaked at 290 lbft around 4000rpm and steadily dropped to 240 by 6000rpm.
Horsepower was relatively flat after 4000rpm at 245hp just dipping slightly to 240 near redline.

I know the manifolds and unported head are choke points but I was under the impression that turbo @ 20psi would make a little more power.

Am I missing something? Or is all this about right?

[Pat]

Stock intercooler?

[Opticon]

Nah, big cast looking thing. 3" thick and covers the whole radiator...

[168glhs1986]

Back when I had the super 60 in...

I would say those are pretty good numbers without ported head, intake and exhaust mani. Cam is different as well.

I had the ported stuff and at 17 psi I was 257 hp and 295 tq

My peak tq was 4500 and pk hp 5200 ish.

[Oggie Fisher]

I would assume the head. That's the primary piece your missing from the 300hp package.

[tryingbe]

Pump gas? E85? Or race gas?

[thedon809]

Almost 250whp is nothing to sneeze at.

[bgbmxer]

Gives me good hopes my car will make decent power even tho I only have the .48 turbine housing. Everything is ported and its a big valve head tho

[iTurbo]

That appears to be the same Isuzu NPR intercooler that I used to have in my Omni GLH.

I had it on the dyno once and it made 198 WHP and 270 WTQ.

Specs at the time:
2.5L Turbo I short block from a junkyard Caravan (tired at about 180k miles).
stock Turbo II top end from a junkyard 8v Maserati TC (~70k miles iirc).
3" FWDP exhaust with TU swing valve, no cat, Ultraflo muffler, all mandrel bent pipe
14 psi boost @ WOT using a grainger valve controller (as much as I could get without hitting over boost shutdown....no MAP clamp etc.)
Isuzu NPR intercooler, with 2.75" mandrel bent aluminum pipe.
3" air intake/filter using 3" mandrel bent aluminum pipe.
SMEC conversion using the SMEC and harness from the Caravan that donated the short block.

So, I would say your results are pretty good considering you are still using a lot of stock parts, particularly the cylinder head. You made almost 50 more WHP than me with only about 6 psi more boost.

[contraption22]

I would say those are some stout numbers for your combo.

[Opticon]

Pump gas? E85? Or race gas?

93 Sunoco. Daily driven winter beater.
Dyno video: http://youtu.be/WKwR3T6ub2o

Thanks for the review guys. I think the final plan is to port everything and run a couple PSI less boost.

[tryingbe]

Super 60 package uses race gas, and they can add more timing to add power without knocking.

[Shadow]

93 Sunoco. Daily driven winter beater.
Dyno video: http://youtu.be/WKwR3T6ub2o

Thanks for the review guys. I think the final plan is to port everything and run a couple PSI less boost.

Why would you run Less boost? I would say port everything and run as much boost, unless you only want to make a limited amount of power?

[Opticon]

I'm really just looking for 275hp/300tq on pump gas... brace yourself for this next bit... reliably.

I can't justify taking it any further because I would just end up building a whole new decked-out o-ringed common block which would lead to a bigger turbo and BAM I just sunk ANOTHER 8 grand into an ugly frickin' Omni.

...

And if I'm going to spend that kind of money on the car I'm turning it into a mid-engine Talbot Horizon rally car replica.

[Pat]

I'm really just looking for 275hp/300tq on pump gas... brace yourself for this next bit... reliably.

I can't justify taking it any further because I would just end up building a whole new decked-out o-ringed common block which would lead to a bigger turbo and BAM I just sunk ANOTHER 8 grand into an ugly frickin' Omni.

...

And if I'm going to spend that kind of money on the car I'm turning it into a mid-engine Talbot Horizon rally car replica.

Why the specific hp target? Where you are now, you're probably getting close to having not much more acceleration but a ton more wheel spin anyway. I bet the car is a hoot to drive on the street as it is.

[Opticon]

There's a little room left in the traction department. As soon as it starts blowing the tires off in 3rd it'll be a complete waste. Hell, even the winter tires stay stuck pretty well through 2nd.

Video of 2nd and 3rd: http://youtu.be/Oa41WBhLBTI

The 3.50 ring gear (A555/A520 hybrid) and OBX diff make applying the power much easier. Even the torque steer is mild.

[5DIGITS]

Congrats - Those are good numbers!!

The most significant limitation is the swirl-port head.
From past experiences a G-head with stock seats and +1mm valves can be ported to exceed the flow capability of a ported swirl port, with the large valves.
Additionally, the squish/quench band on the fast-burn chamber is nearly non-existent and extremely sensitive to detonation above 16psi, without race gas.
While large valves are a mild improvement at low-lift; porting the head will be a substantial gain, for your car.

Although many two-piece intakes are run at much higher boost pressures, the losses at the intake climb dramatically at and above 18psi.
The upper piece has many issues beyond being too small and the lower piece requires a massive effort to address what the plenum alone cannot.

The point, everything counts.
A mildly ported head with a decent intake, turbo and intercooler will successfully support 305+HP at 18psi, as long as the effort has them all working together.
Being at a stout 245HP is awesome and like many have already indicated, uncorking the system is going to take it to a whole new level !!!

Congratulations !!

[OmniLuvr]

I would personally work on a higher hp level without increasing torque, could b something as simple as a cam swap and "fuel" change, but as everyone else has said, uncork the motor and youll free up the power. I really dont think youll need to o-ring the block for quite some time, and that would b at much higher boost levels. Get the thing to breathe and youll b much closer to your # with less boost.

Still vey respectfull #'s at that boost level, good luck with your build, and with an omni u dont need much torque

[speedfreek500]

My numbers were close to yours with a stock head, cam, springs at 17psi. I swaped out the head to a FM stg3 big valve crane beehive springs, New 4inch exhaust all the way back to in front of the left rear tire. My car is a totally different car now, Didn't have time to hit the dyno again before the snow got here. I would look at a Steve Menagon head, The money will be better spent there than the head I got.

[crazymadbastard]

Here is my super 60 14psi pull: