I have run my completely stock 225 up to 14 lbs. of boost without any problems. I normally run around 11 lbs.
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| Author: | bill [ Sun Jul 22, 2007 6:19 pm ] |
| Post subject: | boost |
i was just wondering on say a mild modified slant six if it was turbocharged how much hp you gain per pound of boost? |
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| Author: | Rob64GT [ Sun Jul 22, 2007 6:39 pm ] |
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I run about 7-8 lbs of boost on a stock bottom end, it dose have a ported head w/big valves. For each 1 lb of boost there is a 7% gain in power, also for every 10 degrees of temp rise there is a 1% loss of power. |
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| Author: | bill [ Sun Jul 22, 2007 6:48 pm ] |
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oh thanks and how much psi can you use before you need a alchol injection system? |
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| Author: | Brian [ Sun Jul 22, 2007 6:59 pm ] |
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I have run my completely stock 225 up to 14 lbs. of boost without any problems. I normally run around 11 lbs.
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| Author: | bill [ Sun Jul 22, 2007 7:03 pm ] |
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oh cool is it fast? what kind of turbo? do you use an intercooler? |
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| Author: | Sam Powell [ Sun Jul 22, 2007 7:26 pm ] |
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The car below has a T-4 from an 87 Grand national, and an unkown intercooler. It works well. No turbo lag, and very smooth transition from NA to boost. I have been fighting detonation with 9 lbs of boost. Yes, it feels pretty fast to me, and I used to have a 70 Dart with a 360 in it. Is that 7% compounded or simple interest? Seriously. Sam |
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| Author: | bill [ Sun Jul 22, 2007 7:32 pm ] |
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do you run the msd boost controller system how can you rid detonation? |
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| Author: | Sam Powell [ Mon Jul 23, 2007 4:35 am ] |
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This is EFI, and the ECU has timing control. The MSD unit would work as well. I took timing out to 13 degrees under boost, put in a colder plug, and put in a cooler thermostat than stock. I plan on using water injection eventually. Because I hurt my left leg, I am on the bench for awhile, so can;t test mods to it for awhile. What kind of car do you have? Sam |
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| Author: | Matt Cramer [ Mon Jul 23, 2007 10:16 am ] |
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Quote: Is that 7% compounded or simple interest? Seriously.
I believe it would be simple.
Sam |
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| Author: | Shaker223 [ Mon Jul 23, 2007 11:29 am ] |
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I run 20psi on a stock motor with 60% meth injection but also have a mix of race gas and 93 octane. Race gas is only $1.30 more than premium...cheap insurance I say. The meth comes on at 10psi. Ebay intercooler and 87 GN turbo. 234 whp and 309 ft/lbs of torque...still tuning. |
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