Phunk's friends (Can't remember his user name) car made 818hp at 18.5lbs of boost on a dynojet with his tubular exhaust headers and GT3076 snails. I am very curious to
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11-24-2018, 04:39 PM | #376 (permalink) |
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Phunk's friends (Can't remember his user name) car made 818hp at 18.5lbs of boost on a dynojet with his tubular exhaust headers and GT3076 snails. I am very curious to see how mine does.
Last edited by Spooler; 11-24-2018 at 09:24 PM. |
11-24-2018, 04:49 PM | #377 (permalink) |
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Here his build is.
700whp with ease He also has the 1/4 record at the moment. CJM (Justin's) drag build Last edited by Spooler; 11-24-2018 at 09:26 PM. |
11-24-2018, 05:28 PM | #378 (permalink) |
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The more I look at Streetz's dyno graphs I think we have a restriction on the exhaust side. I wish someone would measure the restriction in the exhaust manifold compared to the boost psi. This would tell us the ratio of backpressure to boost pressure. When it get's out of whack and is not keep close to a 1:1 ratio bad things will happen. Phunks's tubular exhaust manifold and his turbo size/exhaust housing AR must be on point to have made what it did on only 18.5 psi of boost on a stock engine. There is something to learn here. The more HP you can make on lower boost pressure is a big positive.
Last edited by Spooler; 11-24-2018 at 05:30 PM. |
11-24-2018, 06:15 PM | #379 (permalink) |
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Well crap. I looked up the Stage 2 Xona Rotor turbo's and they are only good for 800hp at the crank. At a 15% drivetrain loss that would be 680hp at the wheel. On the mainline dyno this would mean only 564hp at the wheel. Looks like I will be 86hp short at the wheel. We shall see if my calculations are correct. Not sure if I want to react and get 2 bigger turbo's or just stick with what I have.
Last edited by Spooler; 11-24-2018 at 06:53 PM. |
11-24-2018, 08:11 PM | #381 (permalink) |
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In your early 70's?
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11-24-2018, 08:12 PM | #382 (permalink) |
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Do It! Sent from my iPad using Tapatalk
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11-24-2018, 08:34 PM | #384 (permalink) |
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Definitely had some good ethanol fuel in system; notice AFR readings
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11-24-2018, 08:58 PM | #386 (permalink) | |
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11-25-2018, 01:16 AM | #388 (permalink) | |
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They stopped increasing the boost when there was less than 10 hp increase per pound of boost. He said that both the turbos and the fuel were maxed out...so it is what it is. Forgot to mention that I'm running the ID 1300's (functioning at 85% duty cylce) since it will primarily be a pump gas car (few E-85 stations close by me in N.J.) I probably won't have the opportunity to run it at 25 psi too often. I will inquire about the specifics on the boost near the end of the week when I check on the progress... I'm more interested in getting the car finished up - the small details can be time consuming. Since Daelen left a few months ago (he was the go-to guy) and they've moved to a new space in the same complex - the workload has increased and info has been slower in coming. Jon is now wearing a couple of more hats. They did a dyno run before and after the installation of the CJM Intercooler but that was a few months apart but the results were pretty much the same on the E-85. As Ray has always said - don't worry about the numbers - the proof is in how it drives.
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11-25-2018, 01:51 AM | #389 (permalink) | |
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11-25-2018, 02:57 AM | #390 (permalink) |
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