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Boost pressure drop 

 

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 Post subject: Boost pressure drop
Posted: Wed Aug 25, 2010 10:16 pm 
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just got some tax back i considering centri type super charger for my Xh i was want to run 9-10 psi for now but with a FMIC how much boost pressure will i lose over the core and extra piping ????? would i need to run a 12 or larger Psi pulley to achieve 9-10psi at the manifold

 

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 Post subject: Re: Boost pressure drop
Posted: Wed Aug 25, 2010 10:20 pm 
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Boost on guage will show a drop [maybe 2lb?] .. BUT remember the air is more dense and make more power...

 

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 Post subject: Re: Boost pressure drop
Posted: Wed Aug 25, 2010 10:30 pm 
Getting Side Ways
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Turbo it and leave the log manifold on, noticed in your sig your looking for parts, wouldnt bother when you're going to boost it.

 

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 Post subject: Re: Boost pressure drop
Posted: Thu Aug 26, 2010 11:31 am 
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sorry havent updated my sig conversion is already done
and most supercharger kits come to suit the BBM plus it makes running the IC piping much more simple

im not looking for a sudden power hit like a turbo gives i want and smooth increase in power

so even if i lose a bit of boost through the core the colder denser air will yeild more or similar power

 

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XH falcon, GT3582, tuned length manifold, turbosmart 48mm gate, 3inch stainless exhaust, Ported head, Custom grind surecam, turbosmart fpr800, deatch werks 300lph fuel pump, siemens 60lb injectors. Turbo smart vee port BOV. microtech lt10.

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 Post subject: Re: Boost pressure drop
Posted: Thu Aug 26, 2010 12:11 pm 
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i found with the centrifugal supercharger i still make more low and mid range torque with the bbm operating than it does when dissabled..

im not sore of what or if any difference a log would make in my application, but the raptor set ups are only for bbm's
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 Post subject: Re: Boost pressure drop
Posted: Thu Aug 26, 2010 12:42 pm 
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xhfalcon wrote:

im not looking for a sudden power hit like a turbo gives i want and smooth increase in power
there is no reason why you cant have a smooth power delivery with a turbo setup, it all depends how it is tuned

 

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 Post subject: Re: Boost pressure drop
Posted: Thu Aug 26, 2010 12:51 pm 
Getting Side Ways
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xhfalcon wrote:
sorry havent updated my sig conversion is already done
and most supercharger kits come to suit the BBM plus it makes running the IC piping much more simple

im not looking for a sudden power hit like a turbo gives i want and smooth increase in power

so even if i lose a bit of boost through the core the colder denser air will yeild more or similar power


I was referring to a turbo setup and the log manifold - piping is much better. Moot point now anyway I guess - I'd still turbo it bud.

 

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 Post subject: Re: Boost pressure drop
Posted: Thu Aug 26, 2010 2:40 pm 
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xhfalcon wrote:
sorry havent updated my sig conversion is already done
and most supercharger kits come to suit the BBM plus it makes running the IC piping much more simple

im not looking for a sudden power hit like a turbo gives i want and smooth increase in power

so even if i lose a bit of boost through the core the colder denser air will yeild more or similar power



Through a front mount you're likely to lose 2-3psi across the cooler core + piping, but as said above probably still make more power. You're not likely to lose power, and what you have will be 'better' - eg. more a low rpm, less risk of detonation, smoother, less chance of heatsoak, etc, from the cooler intake temps.

I've found my centri charger to make great smooth power from low down (1500rpm) to redline.

Joe

 

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 Post subject: Re: Boost pressure drop
Posted: Thu Aug 26, 2010 4:05 pm 
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okay thanks guys though it is a very hard to decide which avenue of boost i should choose i keep changing my mind haha

 

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XH falcon, GT3582, tuned length manifold, turbosmart 48mm gate, 3inch stainless exhaust, Ported head, Custom grind surecam, turbosmart fpr800, deatch werks 300lph fuel pump, siemens 60lb injectors. Turbo smart vee port BOV. microtech lt10.

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