Rear mount turbo dyno results are in
05-13-2005, 03:59 AM
#17
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Re: Rear mount turbo dyno results are in
Originally Posted by 5.0THIS
Nice peak numbers indeed 
05-13-2005, 07:35 AM
#18
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Re: Rear mount turbo dyno results are in
Originally Posted by 5.0THIS
Nice peak numbers indeed
Obviously too big an engine for that turbo and not exactly a good turbo cam = inefficiencies.
Up the size of the turbo for less backpressure and better spooling for 383ci and a more friendly turbo cam can and I suspect the area under the curve will be much better.
05-15-2005, 07:43 AM
#20
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Re: Rear mount turbo dyno results are in
I uncapped the Supertrapp muffler last night & saw 14+ PSI on the gauge before I lost traction in third gear . I think the turbo had no place to put the air after the 4700 +/- RPM with the end cap in place. I want to re-dyno it to get the exact numbers, but the SOTP dyno says this was the bulk of the problem.
EDIT
Talked to the dyno guy, the run was w/o the Supertrapp. He says the Greddy needs to be properly setup (boost dropping at higher RPMs), so I am going to start a new thread in search of some info on this.
. I think the turbo had no place to put the air after the 4700 +/- RPM with the end cap in place. I want to re-dyno it to get the exact numbers, but the SOTP dyno says this was the bulk of the problem.EDIT
Talked to the dyno guy, the run was w/o the Supertrapp. He says the Greddy needs to be properly setup (boost dropping at higher RPMs), so I am going to start a new thread in search of some info on this.
Last edited by Live for TAs; 05-15-2005 at 03:20 PM.
05-16-2005, 01:49 AM
#21
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Re: Rear mount turbo dyno results are in
I'd check into your springs, I don't think they are good enough. Also, you really should consider a bigger AR to help get a better power curve. Lag won't be that much worse and you'll be a lot quicker with the bigger AR.
What psi do you see on the streets with it capped? I know on the dyno(unless a mustang dyno), you will see a few less psi then vs the streets, but not a ~5 psi difference. If you put down those #'s on 8-9lbs, on 15lbs it should be a beast, especially if you do the new exhaust housing and new springs.
Get a track pass, I'm not sure what tires/suspension you have, but I'm going to guess high 12's at 113ish as it sits right now.
What psi do you see on the streets with it capped? I know on the dyno(unless a mustang dyno), you will see a few less psi then vs the streets, but not a ~5 psi difference. If you put down those #'s on 8-9lbs, on 15lbs it should be a beast, especially if you do the new exhaust housing and new springs.
Get a track pass, I'm not sure what tires/suspension you have, but I'm going to guess high 12's at 113ish as it sits right now.
05-20-2005, 05:29 AM
#23
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Re: Rear mount turbo dyno results are in
Yeah- 
I blew off the blow off valve while playing with the boost controller and drug it on the road a short distance, so I have to see if it can be fixed.
My oil pan is leaking, so I am working on getting a Canton.
I'm also researching turbo-specific cams, and will probably do this & the oil pan at the same time, but right now my 240Z owns the big jackstands I need to do this.
I blew off the blow off valve while playing with the boost controller and drug it on the road a short distance, so I have to see if it can be fixed.My oil pan is leaking, so I am working on getting a Canton.
I'm also researching turbo-specific cams, and will probably do this & the oil pan at the same time, but right now my 240Z owns the big jackstands I need to do this.
05-20-2005, 01:36 PM
#24
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Re: Rear mount turbo dyno results are in
Originally Posted by Teufel Hunden
Just an FYI, the boost controller is not at fault for the graph looking like that. The peak numbers seem fine (as they typically do on an STS vehicle), but IMO, there's something seriously wrong with the car falling flat on its face after it peaks. Especially being a turbo car.
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