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Forced Induction Compression Ratios

Originally Posted by Irishrogue For what it's worth, I went with 9:1 compression on my rebuild and did 685hp 615 tq on 91 octane at 20 lbs of boost. I

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Old 01-10-2020, 08:45 AM   #1 (permalink)
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Originally Posted by Irishrogue View Post
For what it's worth, I went with 9:1 compression on my rebuild and did 685hp 615 tq on 91 octane at 20 lbs of boost. I don't have the low end problem spooler was talking about, I think that's mostly credit to Seb's tuning abilities with the throttle response. From what Seb explained to me the main limiting factor to running higher boost is the intake manifold.
The manifold becomes a problem on low compression high boost builds. Once you go above 24 psi the manifold becomes a factor as well.
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Old 01-09-2020, 06:56 PM   #2 (permalink)
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Looks like Adam LZ has already lost his head gaskets. Not sure about it but it sure does look like it.
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Old 01-10-2020, 07:18 AM   #3 (permalink)
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Given what the motor is pushing out HP wise, I believe you are right. It seems like he and his folks are playing catch up a little with this platform. I mean he clearly has connections/money to dump into it, but why not take a more measured approach and "measure twice and cut once"?
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Old 01-10-2020, 07:41 AM   #4 (permalink)
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Given what the motor is pushing out HP wise, I believe you are right. It seems like he and his folks are playing catch up a little with this platform. I mean he clearly has connections/money to dump into it, but why not take a more measured approach and "measure twice and cut once"?
HE is a clout chaser. Plus sure his builders want to do their own thing and not listen to anyone
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Old 01-10-2020, 08:45 AM   #5 (permalink)
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HE is a clout chaser. Plus sure his builders want to do their own thing and not listen to anyone
That sounds familiar. LOL
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