LS conversions. Let's hear it.
#76
Nordschleife Master
Thread Starter
How I rebuild the next engine I don't know. Depends if my PD/CEP block can be saved by sleeving it. If so I might change a few things.
If I need another block I will keep it Alusil just as this last engine. I ran 9.5:1 compression on this engine and will probably keep that for the next setup as well. I think my engine is proof that a 16v engine really benefits from more compression. I ran 1:15 bar on pump gas with no issues. No need for lower compression then that.
I will go up to a larger turbine housing as well. The engine would benefit from a larger compressor if I intend to keep it above 1 bar on E85 but being a race car there is so much more stuff that is better to "waste" energy on.
The lap times isn't determined by 500 or 600 hp. Unfortunately
#78
Precisely - as it's a race car I was thinking that increasing the CR to somewhere above 10 and running with low boost and E85 would make a super responsive engine with almost non-existent lag and bags of useful torque instead of peak HP. If your compressor can flow lots you should not need to run much more than 0.5 bar yet still get a super swift car.
#80
Nordschleife Master
Thread Starter
The point with the Audi 5 cyl is that the engine blocks can handle crazy amount of power and are available cheap everywhere. I don't need a super wide powerband so a high boost 2.2 liter fits very well.
Alex, I'm well aware what can be done with our little Porsche engines Here's the dyno chart from my 3.0l 16v Turbo @ 17 psi PUMP gas:
Alex, I'm well aware what can be done with our little Porsche engines Here's the dyno chart from my 3.0l 16v Turbo @ 17 psi PUMP gas:
#81
Nordschleife Master
Thread Starter
Precisely - as it's a race car I was thinking that increasing the CR to somewhere above 10 and running with low boost and E85 would make a super responsive engine with almost non-existent lag and bags of useful torque instead of peak HP. If your compressor can flow lots you should not need to run much more than 0.5 bar yet still get a super swift car.
My impressions after driving both my race car and my old street car is that I don't see a need for quicker response than the 9.5:1 comp 3.0l 16v engine provided. Especially the race car that is light-weight and runs a 6-speed gearbox. My feeling is that it will be quicker from here on with more top end power than more torque. That's why I'll go up a size in turbine housing and (hopefully) switch cams
#82
That is incredible.
#86
Nordschleife Master
Thread Starter
#88
The point with the Audi 5 cyl is that the engine blocks can handle crazy amount of power and are available cheap everywhere. I don't need a super wide powerband so a high boost 2.2 liter fits very well.
Alex, I'm well aware what can be done with our little Porsche engines Here's the dyno chart from my 3.0l 16v Turbo @ 17 psi PUMP gas:
Alex, I'm well aware what can be done with our little Porsche engines Here's the dyno chart from my 3.0l 16v Turbo @ 17 psi PUMP gas:
#89
Rennlist Junkie Forever
The point with the Audi 5 cyl is that the engine blocks can handle crazy amount of power and are available cheap everywhere. I don't need a super wide powerband so a high boost 2.2 liter fits very well.
Alex, I'm well aware what can be done with our little Porsche engines Here's the dyno chart from my 3.0l 16v Turbo @ 17 psi PUMP gas:
Alex, I'm well aware what can be done with our little Porsche engines Here's the dyno chart from my 3.0l 16v Turbo @ 17 psi PUMP gas:
TonyG
#90
Nordschleife Master
Thread Starter