Single Turbo RX-7's Questions about all aspects of single turbo setups.

Dyno my car

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Old Aug 18, 2003 | 05:04 PM
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Dyno my car

Here is my dyno graph, I'm pretty happy with the #. I will have to do some more fuel mods in order to turn up the boost. I'm looking to get 500 to 550 rwhp.
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Old Aug 18, 2003 | 06:00 PM
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Kinda funny having the rpms in the middle of the sheet. I've used a mustang lots of times, but never seen this. Nice numbers though. What kinda setup are you running? Later, CJ
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Old Aug 18, 2003 | 06:03 PM
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Damn you pp, I was just about to post it and ask about his setup
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Old Aug 18, 2003 | 06:12 PM
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t78, apexi pfc, raceported motor, full exhaust, 3row intercooler, profec b, 1600cc fuel system, fuel pump
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Old Aug 18, 2003 | 07:12 PM
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what kinda fuel pump internal or external?
stock fuel lines or upgraded?

stock fuel/modified fuel rails or custom?
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Old Aug 18, 2003 | 07:22 PM
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walbo inline pump, stock fuel lines. I will be upgrading the lines and doing another fuel pump
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Old Aug 18, 2003 | 08:10 PM
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damn, nice #'s, so you are using stock seals?
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Old Aug 18, 2003 | 08:36 PM
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Damn, nice numbers. And at only 15lbs? Whats the sweet spot of that turbo anyways?
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Old Aug 18, 2003 | 09:15 PM
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Define "race port" for us
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Old Aug 18, 2003 | 10:22 PM
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Well, Peter, i am sure its nothing like what you brew up over there
Oh, since its been a while since i have talked to you, My car is almost running. It should idle by the end of the week, then i just have to talk to BDC and have him come tune it for me
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Old Aug 18, 2003 | 10:47 PM
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actually the boost was about 16-17, the port is the largest you can go without doing a bridgeport. It's a Pineappleracing motor. 2mm seals

Last edited by zayrx7; Aug 18, 2003 at 10:55 PM.
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Old Aug 18, 2003 | 10:56 PM
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joe, you can tune it here.
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Old Aug 18, 2003 | 10:57 PM
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the dyno is up and running
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Old Aug 18, 2003 | 10:59 PM
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good work you beat my best dyno by 2 hp
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Old Aug 18, 2003 | 11:01 PM
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Is that WITH a correction factor, Z?

Did you datalog the run?
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Old Aug 18, 2003 | 11:03 PM
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Thanks, but I have a lot more room to go A/F was in the 10's. I need to do another fuel pump and new lines, 3bar map sensor. I going to run 24 on the street
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Old Aug 18, 2003 | 11:06 PM
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yes! I log it, the dyno is set up to read Dyno jet #
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Old Aug 18, 2003 | 11:09 PM
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So what is the correction factor that you use to get it to relate to Dyno Jet #'s?

So if you took it across town to dyno-Brian's dyno jet you think you would see the same numbers?

Last edited by Badog; Aug 18, 2003 at 11:15 PM.
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Old Aug 18, 2003 | 11:29 PM
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yes, I would see the same #.

Last edited by zayrx7; Aug 18, 2003 at 11:34 PM.
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Old Aug 18, 2003 | 11:44 PM
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So, what is the correction factor that you are using?

Since the Mustang is a true loading dyno, the dyno numbers from a mustang dyno will come out lower than the inertia (Dynojet) dyno.

You should not see the same numbers from a Mustang and a Dynojet unless you are using correction factors, right?
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Old Aug 18, 2003 | 11:47 PM
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yes on the mustang # it would be 387rwhp added 18%
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Old Aug 19, 2003 | 05:50 AM
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That has to be one of the fastest spooling T78 or other large single turbo dyno plots I have ever seen. Add to that one of the nicest torque curves I have ever seen on a turbo rotary, almost too good to be true.

Bravo, well done. Would like to see the dyno graph when you're finished tuning.
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Old Aug 19, 2003 | 06:14 AM
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I'd like to see it on a dynojet to make it easier to compare to other dynos

Brian
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Old Aug 19, 2003 | 08:04 AM
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just got the turbo back from a rebuild, It does seems to spool better.
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Old Aug 19, 2003 | 09:31 AM
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To calibrate the mustang for dynojet numbers we took a car that had been on a dynojet and put down the same numbers each time and dynoed it on our Mustang dyno. We could figure % out from those results. Along with talking to other mustang dyno owners there is is usually a 18-20% difference in the readings between the 2 dynos. You have to change the weight of the rollers in the software to adjust the HP figure.

Jason
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