60-1 on 3v

TimboStang · April 12th, 2010, 04:38 PM

I'm curious about why my power curve falls off at 5800rpm. Power falls off pretty abruptly. It is still making 10 psi when the power falls off. I thought if the turbo was still forcing dense air in that it would still be making power. I would love to have power up to 6200. Here is a dyno sheet.
What do y'all think?

[IMG]

[/IMG]

y2k02 · April 25th, 2010, 01:19 PM

I would guess the valve springs Are floating.

Ross@TXCW · May 20th, 2010, 10:03 PM

Originally Posted by y2k02

I would guess the valve springs Are floating.

could be possible. who tuned it and why didnt they work on it?

TimboStang · May 21st, 2010, 01:34 PM

I had to rethink how airflow works with volume and pressure. This small frame turbo just can't move enough air volume to build power past 5800. I found some other dyno charts that fall off in the same region.

y2k02 · May 21st, 2010, 03:11 PM

Yours falls off at 5250rpm. The engine is still seeing the psi. I think if the turbo is maxed out that the psi would fall. I say valve springs.

April 12th, 2010, 04:38 PM	#1
TimboStang Regular 2005 Mustang GT 11.88 @ 118 Join Date: Jul 2008 Location: Conroe TX Posts: 395 iTrader: 0 reviews	60-1 on 3v I'm curious about why my power curve falls off at 5800rpm. Power falls off pretty abruptly. It is still making 10 psi when the power falls off. I thought if the turbo was still forcing dense air in that it would still be making power. I would love to have power up to 6200. Here is a dyno sheet. What do y'all think? [IMG][/IMG] __________________ Turbonetics single 60mm

April 25th, 2010, 01:19 PM	#2
y2k02 Hardcore Enthusiast 02 Mustang GT 9.91@133 Join Date: Mar 2009 Location: Ohio Posts: 1,306 iTrader: 1 reviews	I would guess the valve springs Are floating. __________________ 2002 GT PI heads Twin 60mm turbos Th400 6.34@114 1/8 9.99@137 1/4 http://i160.photobucket.com/albums/t...t/DSCF5654.jpg http://i160.photobucket.com/albums/t...2gt/IMG060.jpg

May 21st, 2010, 01:34 PM	#4
TimboStang Regular 2005 Mustang GT 11.88 @ 118 Join Date: Jul 2008 Location: Conroe TX Posts: 395 iTrader: 0 reviews	I had to rethink how airflow works with volume and pressure. This small frame turbo just can't move enough air volume to build power past 5800. I found some other dyno charts that fall off in the same region. __________________ Turbonetics single 60mm

May 21st, 2010, 03:11 PM	#5
y2k02 Hardcore Enthusiast 02 Mustang GT 9.91@133 Join Date: Mar 2009 Location: Ohio Posts: 1,306 iTrader: 1 reviews	Yours falls off at 5250rpm. The engine is still seeing the psi. I think if the turbo is maxed out that the psi would fall. I say valve springs. __________________ 2002 GT PI heads Twin 60mm turbos Th400 6.34@114 1/8 9.99@137 1/4 http://i160.photobucket.com/albums/t...t/DSCF5654.jpg http://i160.photobucket.com/albums/t...2gt/IMG060.jpg

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