Which plot is best?
Thread Starter
TECH Apprentice
Joined: Jun 2007
Posts: 364
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Which plot is best? Which turbo would you choose. Parameters used are:twins, 6 liter, 650 crank hp, 6000 rpm, 12 psi.
Sorry couldn't get the pictures to direct link to Picasa.
Sorry couldn't get the pictures to direct link to Picasa.
Last edited by ponjohn; Dec 5, 2011 at 08:28 PM.
Your Plots are all incorrect. 12psi is 1.8 PR (12/14.7=.81PR+1(for NA)= 1.81). I like to run turbo's a little on the small side, so it comes up right in the meat of the turbos efficiency range and then runs off the end at the shift. This gives the best spool and under the curve power band.
Thread Starter
TECH Apprentice
Joined: Jun 2007
Posts: 364
Likes: 0
Those plots took into account a 1.7lb pressure loss across the intercooler.
This figure was in the calculator, not knowing what is a reasonable loss, I left it alone.
So in actuality the pressure at the turbo 13.7.
Thanks.
This figure was in the calculator, not knowing what is a reasonable loss, I left it alone.
So in actuality the pressure at the turbo 13.7.
Thanks.
