PROCHARGER Questions,
12-19-2006, 03:56 PM
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PROCHARGER Questions, 1.I believe my dump valuve is adjustable according to manifold Vac. atm mine is not closing (not giving boost until zero vac), I am thinking of setting it to close at -4 psi.
and was wondering what others have theirs set at?
2.
I am running an F one model , with the damper pulley (7" I think) and wondering if a 4" blower pulley would be ok for a built 346? built = pistons and rods at about 9:1 comp.
Thanks Tonner.
and was wondering what others have theirs set at?
2.
I am running an F one model , with the damper pulley (7" I think) and wondering if a 4" blower pulley would be ok for a built 346? built = pistons and rods at about 9:1 comp.
Thanks Tonner.
12-19-2006, 06:47 PM
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Tonner,
By definition boost won't occur until after 0 vacuum. The valve is pre-adjusted to allow for full opening under typical idle and part throttle vacuum, which is what you want. The mild spring pressure biases the valve closed under zero vacuum conditions. Boost applied to the diaphragm ensures it stays shut under boost.
By definition boost won't occur until after 0 vacuum. The valve is pre-adjusted to allow for full opening under typical idle and part throttle vacuum, which is what you want. The mild spring pressure biases the valve closed under zero vacuum conditions. Boost applied to the diaphragm ensures it stays shut under boost.
12-20-2006, 05:17 AM
#4
Originally Posted by Tonner
I am running an F one model , with the damper pulley (7" I think) and wondering if a 4" blower pulley would be ok for a built 346? built = pistons and rods at about 9:1 comp.
Thanks Tonner.
Thanks Tonner.
It is factors like the fuel system that are going to determine how much boost you can run, and this also includes having a very good tune. Bob
12-20-2006, 06:51 AM
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Originally Posted by andereck
Tonner,
By definition boost won't occur until after 0 vacuum. The valve is pre-adjusted to allow for full opening under typical idle and part throttle vacuum, which is what you want. The mild spring pressure biases the valve closed under zero vacuum conditions. Boost applied to the diaphragm ensures it stays shut under boost.
By definition boost won't occur until after 0 vacuum. The valve is pre-adjusted to allow for full opening under typical idle and part throttle vacuum, which is what you want. The mild spring pressure biases the valve closed under zero vacuum conditions. Boost applied to the diaphragm ensures it stays shut under boost.
I just thought We might have been able to use some of that boost during part throttle driving as I dont see 0 vac (by aeroforce gauge) until you really stand on it.
need to fit my boost gauge soon
Last edited by Tonner; 12-20-2006 at 07:25 AM.
12-20-2006, 07:01 AM
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Originally Posted by Exotic Performance Plus
We typically run 16 psi of boost quite often with the stock style heads, without any problems. We see the stock fuel system as the limiting factor once the horsepower is past 600 rwhp. Check out the fuel system we installed on this T/A. http://www.exoticperformanceplus.com...Car.php?car=42
It is factors like the fuel system that are going to determine how much boost you can run, and this also includes having a very good tune. Bob
It is factors like the fuel system that are going to determine how much boost you can run, and this also includes having a very good tune. Bob
it would be Ideal to have good boost early and blow it off somehow when it reaches say 17 lb.
oh the fuel system has been sorted to handle constant 58 lbs with boost reference climbing into the 70's ok, now using the Magnafuel protuner 750 running at 13.6 V. it returns about 1us gal per min back to the swirl pot at Idle.
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12-22-2006, 04:51 AM
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Originally Posted by Tonner
1.I believe my dump valuve is adjustable according to manifold Vac. atm mine is not closing (not giving boost until zero vac), I am thinking of setting it to close at -4 psi.
and was wondering what others have theirs set
and was wondering what others have theirs set
you've got to stand on it pretty hard before it comes into boost right now.
at 60 mph cruisin flat road its holding -5.4 psi back off the juice and its showing -9.5, not that the latter really matters,