CLASS RACER FORUM - View Single Post - to all 85-92 efi racers

Rob Lloyd · 10-10-2008, 03:53 PM

Since my name was posted up on pg7, I'll throw my $0.02 in here at the end - with a turbo car, more boost only makes more power to a point.

1st - Just like with a carb, the size of the turbo inlet determines the maximum amount of air you can flow. Airflow = power. And, just like with a carb, only the atmosphere pushes air INTO the turbo. Turbo cars must run a completely stock turbo - and tech DOES check it thoroughly. As me how I know.

2nd - There's a 'sweet spot' on every turbo that flows the most air and therefore makes the most power. Any more boost only raises the air temperature, it won't flow any more air. It's related to #1 above. My car goes faster at 14psi than it does at 24psi, and 24psi tends to break stuff (like pistons - again, ask me how I know) becasue the intake temp is so dang hot.

10-10-2008, 03:53 PM	#92
Rob Lloyd Junior Member Join Date: Apr 2005 Location: Whitmore Lake, MI Posts: 60 Likes: 0 Liked 0 Times in 0 Posts	Re: to all 85-92 efi racers Since my name was posted up on pg7, I'll throw my $0.02 in here at the end - with a turbo car, more boost only makes more power to a point. 1st - Just like with a carb, the size of the turbo inlet determines the maximum amount of air you can flow. Airflow = power. And, just like with a carb, only the atmosphere pushes air INTO the turbo. Turbo cars must run a completely stock turbo - and tech DOES check it thoroughly. As me how I know. 2nd - There's a 'sweet spot' on every turbo that flows the most air and therefore makes the most power. Any more boost only raises the air temperature, it won't flow any more air. It's related to #1 above. My car goes faster at 14psi than it does at 24psi, and 24psi tends to break stuff (like pistons - again, ask me how I know) becasue the intake temp is so dang hot. __________________ Rob Lloyd 3728 BF/S