Engine Simulation Software
Turbo Mini Forums

Works a bit slow so I've been playing with this again.

The simulations of the Mig 1293 Turbo are waiting for some RR data to confirm the validity but in anticipation I've been trying out big valve heads and different cams etc to decide on the next evolution of the engine.

However, neither head or cam improvements seemed to be making much of a difference. So I tried a bigger turbo and suddenly I had 10% more hp without any loss to peak torque. Bingo !!!!

Seems that Garrett have determined the limits of the GT2056 about right.

Edited by Paul S on 7th Sep, 2011.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I am not sure what you mean "valve to bellmouth". If you are talking about an NA engine with a Weber, the runner length stops at the choke. For an SU, the runner length stops at the piston, though it could go all the way to the top of a inlet stack if the piston was nearly 100% up. Check your software and see if the shorter runner values give you a more accurate result. Thanks for sharing the info!

Sorry, but carbs do not feature in this.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."