Upgrades and Aftermarket - 99 & up 7.3L EngineUpgrading or adding OEM or aftermarket equipment to your 1999-Up Super Duty or Excursion with 7.3L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
If you can get the head to seal, ~100psi next question, how long will it last [img]/ubbthreads/images/graemlins/shrug.gif[/img]
Steve
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2004 F250 XLT CC 7.3PSD Ghostgum silver, Sports bar, bullbar, IPF HIR driving lights, custom s/s side steps, polyair airbags, 6 position chip, Autometer C2 guages, Wicked Wheel, MBRP exhaust, K&N FIPK II, PI TC & Built Tranny, DI Reg return, Tub liner, 285/65-16 Wrangler MT/R.
15.61@85mph on a very hot day....
A stock PSD will pop its headgaskets at around 40-45psi from what I have read on this site over the years.
There are a few guys running 35psi and have not had a problem.
The cummins inline 6 can handle into the 50-60 range before they pop their headgaskets, but thats not fair to compare as their head design is alot more robust.
and i ask what does psi have to do with the amount of air your moving?
if a stock turbo at 25 psi only moves 900 CFM (example I don't know the real #)
and
a HE2 at 25 psi moves 1200 cfm (ie)
why do we measure and judge every thing on psi when we really want max CFM becuase more means more power(if you have extra fuel) or am i missing some thing here.
thank you in advance for helping me sort out my confusion.
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Long Island Performance Diesel & Fuel
Coram, NY 11727
631-285-1174
[ QUOTE ]
and i ask what does psi have to do with the amount of air your moving?
if a stock turbo at 25 psi only moves 900 CFM (example I don't know the real #)
and
a HE2 at 25 psi moves 1200 cfm (ie)
why do we measure and judge every thing on psi when we really want max CFM becuase more means more power(if you have extra fuel) or am i missing some thing here.
thank you in advance for helping me sort out my confusion.
[/ QUOTE ]Good point, we have measured over 1,200cfm on my truck using the TAGs on a stock turbo at 26psi. Plenty of power and torque without the high boost pressure or smoke. More air is a good thing and at the lower boost pressures you also have lower exhaust back pressures against the engine which makes it run more efficently.
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2001 F-250 Crew, long box, 4x4, Big Hoss level-5 Chip, Turbo Air Guide (TAG-II), Ford AIS air intake with foam sleeve, Monster exhaust, Aeroturbine, exhaust Guide, 6.0L intercooler, Di-Pricol Optix gauges, IHC CPS, Premo Oil Refiner, Banks Exhaust brake, SmartLock, Banks Quick Turbo, Six-Gun.
2000 Excursion PSD limited, Banks Big Hoss level-5 Chip, Turbo Air Guide (TAG-II), Banks Transcommand, UNI 2-stage foam air filter, 4" aluminized exhaust with 4" down pipe and 2 Aeroturbines.
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