Hi Guys
Got a question so i have this C20get motor in my Opel kadett shell, The motor was redone about 1500km ago after 5years abuse... so only upgrades ive done on the engine is arp's on the rods and bigger straight T3 turbo... everything else in the engine is stock i.e.: Pistons, rods, crank, headgasket, head..... i only put a bigger 63mm throttle body on... injectors are stock...
Now apparently the stock motor produces 165hp... but im keen on making 400hp ... i know its asking alot but then how much can i make before i have to start looking at forged internals like crank,rods and pistons....????
Power figures at this point of time... She produces a healthy 189kW (253hp)@ 0.7bar boost and 344NM torque @ 5800 RPM...and all this @ the wheels and not the Flywheel..
Thanks in Advance...
"C20GET" powered Opel Kadett
189kW (254Hp) /344 Nm Torque @ 5800 RPM
@ 0.7 Bar Boost
the C20get was never offered here.. our cavalier is a totally different car than the european cavalier.
correction:
check the second gen forum.. I believe the RPO of this engine here is the LT3
Yip it is an Lt3... thanks for the heads up...
"C20GET" powered Opel Kadett
189kW (254Hp) /344 Nm Torque @ 5800 RPM
@ 0.7 Bar Boost
Good catch, PJ.
Devon, the C20GET is not the best engine to use to make 400 hp. I for one would not want to be running at the levels of boost required to make that kind of power with the SOHC / 8 valve head. I've got my own C20GET car at 17 psi and I've helped tune another that makes it over 20 psi, but at last check, neither engine is close to the power you're looking for. A gent that goes by pontiacjeff is probably the closest to 400 but he's using a 16V head which is stock equipment on the X20SED head originally supplied with the Daewoo 2.0 engine. I see your questions on Daewootech, and it's good that you're looking there for answers, also. The tech discussions on that forum go way beyond what's generally discussed here.
Tuning and parts selection is the key to achieving big power in a reliable package. At 200 hp per liter, you're definitely playing with the big dogs. The first thing I'd do is try to decide what rpm you want to make peak power at. The stock engine power peaks around 5000 rpm. This is very low for high hp numbers, but this is what the cam is designed for. If you could move your power peak to 7000 or 8000 rpm you'd be able to use less boost for the same peak power number. I'm sure you realize you'll need a new cam and some better springs at this rpm. The pistons are forged Mahle units and are strong, and the rods are better than the ones found on naturally aspirated US engines. The real weak point imo is the head gasket. It takes very good tuning to keep it from failing and if you're not patient you should be prepared to replace it several times. Tuning for this level of power should be a deliberate process and should not include radical departures from known methods if you are new to tuning engines. Plan carefully and tune methodically and you will at least find the maximum level of power your engine will make without being destroyed. And you'll have a good basis for trying again if you don't reach the power level you're looking for.
Good luck.
-->Slow
