11:1 to much for boost?
11:1 to much for boost? I'm not an expert with forced induction, most of my time has been spent running nitrous over the years. I'm getting the itch to run some boost now. My car is a stock bottom end H/C LS1 which is right at 10.9-11.0:1 compression. Is that to high of compression for boost? It currently makes 410/393 and i'd like to be around 500-525hp on boost. Any input is much appreciated.
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Joined: Feb 2009
Posts: 365
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From: A DEN
I'm not an expert with forced induction, most of my time has been spent running nitrous over the years. I'm getting the itch to run some boost now. My car is a stock bottom end H/C LS1 which is right at 10.9-11.0:1 compression. Is that to high of compression for boost? It currently makes 410/393 and i'd like to be around 500-525hp on boost. Any input is much appreciated.
Pounds of boost is irrelevant, power output is what matters. Seen Honda (open deck motors) run 12.5:1 compression on 10psi (forged internals of course). but it held till he pulled the pistons for something lower. He's running 10:1 right now.
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11:1 is what I run, 130k mile stock bottom end LS1. H/C/I + 76mm turbo, normally run around 8lbs of boost on 92 + 100% meth injection, but have ran up to 11-15lbs with av gas. Kind of a non-winter daily driver, put 5k miles on the turbo setup and beat the **** out of all the time. It's not ideal but I didn't want to get rid of my current heads. I will throw a 5.3 in it when it blows.
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Verdad Gallardo 11:1 is what I run, 130k mile stock bottom end LS1. H/C/I + 76mm turbo, normally run around 8lbs of boost on 92 + 100% meth injection, but have ran up to 11-15lbs with av gas. Kind of a non-winter daily driver, put 5k miles on the turbo setup and beat the **** out of all the time. It's not ideal but I didn't want to get rid of my current heads. I will throw a 5.3 in it when it blows.
