safe boost
07-06-2007, 03:52 PM
#2
6th Gear Member
Join Date: Jun 2006
Location: Maine
Posts: 5,693
RE: safe boost
Yo know, I'm not sure I'd run much boost if any at all in that situation. The compression is a bit high and the octane rating isn't as high as I'd want it to be. If I did run boost at those levels, I'd probably run something like 5 - 6 PSI. I'd probably get a water / methanol injection kit to spray into it as well to help with detonation.
07-06-2007, 03:54 PM
#3
Thread Starter
Join Date: Jul 2007
Posts: 18
RE: safe boost
ORIGINAL: samseed101
Yo know, I'm not sure I'd run much boost if any at all in that situation. The compression is a bit high and the octane rating isn't as high as I'd want it to be. If I did run boost at those levels, I'd probably run something like 5 - 6 PSI. I'd probably get a water / methanol injection kit to spray into it as well to help with detonation.
Yo know, I'm not sure I'd run much boost if any at all in that situation. The compression is a bit high and the octane rating isn't as high as I'd want it to be. If I did run boost at those levels, I'd probably run something like 5 - 6 PSI. I'd probably get a water / methanol injection kit to spray into it as well to help with detonation.
07-06-2007, 04:39 PM
#4
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Join Date: Apr 2007
Location: California
Posts: 10,468
RE: safe boost
First of all I doubt you could run 11.5:1 compression on 91 without detonating, and even with a tune it's gonne be slightly on the rich side with almost no ignition into it, if it runs without detonating. You put boost on top of that and you'll prolly blow it up. Some of the newer engines can get away with it because they're designed differently(better rod ratio, smaller bores for more detonation control, better quench, better chamber design etc) but not a 5.0
07-06-2007, 04:50 PM
#6
Thread Starter
Join Date: Jul 2007
Posts: 18
07-06-2007, 04:51 PM
#7
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Join Date: Jun 2006
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RE: safe boost
ORIGINAL: 347stang
The reason why I ask is a car I am looking at on ebay the guy is running 14lb pulley and that seemed high to me. If I do pick the car up I was thinking about dropping the boost to about 8psi maybe?
ORIGINAL: samseed101
Yo know, I'm not sure I'd run much boost if any at all in that situation. The compression is a bit high and the octane rating isn't as high as I'd want it to be. If I did run boost at those levels, I'd probably run something like 5 - 6 PSI. I'd probably get a water / methanol injection kit to spray into it as well to help with detonation.
Yo know, I'm not sure I'd run much boost if any at all in that situation. The compression is a bit high and the octane rating isn't as high as I'd want it to be. If I did run boost at those levels, I'd probably run something like 5 - 6 PSI. I'd probably get a water / methanol injection kit to spray into it as well to help with detonation.
07-06-2007, 05:01 PM
#8
Thread Starter
Join Date: Jul 2007
Posts: 18
RE: safe boost
Also he is running on 93 octane I am guessing. He lives in NM, but I live in CO where it is pretty hard to find 93 octane. Either way any suggestions on a safe amount of boost to run with that high of compression if I do stick to just running 91 octane
07-06-2007, 05:14 PM
#9
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Join Date: Apr 2006
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Posts: 5,116
RE: safe boost
run from it as fast as you can..also I may be wrong but that doesn't look like a 14# pulley looks like a 3.15" or so...not a 2.95"...no way in the listing is a fuel management system or even a tuner device..I call major bull4hit on that stang
07-06-2007, 05:42 PM
#10
6th Gear Member
Join Date: Jun 2006
Location: Maine
Posts: 5,693
RE: safe boost
I also don't seen an intercooler or any form. Unless he has a hidden water / methanol injection nozzle underneath. But if he does then he didn't mention it. Are we supposed to believe that he's running 14 PSI of boost with that compression, no intercooler, and no tune?
It could be the angle of the picture, but that pulley does look smaller than mine and I'm running 10 PSI of boost, so there's a chance that it may be a 12 - 14.
It could be the angle of the picture, but that pulley does look smaller than mine and I'm running 10 PSI of boost, so there's a chance that it may be a 12 - 14.