Why the Fox Conversions?
- Thread starter brentwoodboy
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Chris, what I don't understand is how you are seeing a 2lb increase in boost. Boost is nothing more than a measure of backpressure in the intake tract. If the fox TB flows better than ours, boost should go down on a centrifical SC'd car. It'd be different on say a KB where a reduction in bottlenecks in front of the blower yeild boost increases, just like a powerpipe on a centrifical. I was just wondering if there is something I am missing here
94TURBO5 O
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onebad95
Sherriff of Bling King County
94SC50 said:
I doubt it will fit because of the strut tower clearance. Atleast, that is what I was told.
I recall a year or two after the SN-95 came out. One of the magazines dyno'd both the Fox and SN-95 back to back and the Fox consistently made something like 7-10rwhp more than the SN-95 in almost every pull. Considering everything else but the intake and computer are essentially the same, I'd say you've got your answer. 
Killer,
I'm seeing the boost gains down-low up top I'm yet to see...but going from 2 1/4 to 3" is going to increase flow, and let that supercharger breathe much better. I hear what you are saying about the more flow=less boost, but this kit helped me p/u 2psi right off the bat in the lower rpms.
I'm seeing the boost gains down-low up top I'm yet to see...but going from 2 1/4 to 3" is going to increase flow, and let that supercharger breathe much better. I hear what you are saying about the more flow=less boost, but this kit helped me p/u 2psi right off the bat in the lower rpms.
onebad95
Sherriff of Bling King County
Paul,
I was thinking the same thing, but then I was also wondering why is it when you install a powerpipe you pick up boost. That has to be freeing up more air than the stock s/c set up ?
I was thinking the same thing, but then I was also wondering why is it when you install a powerpipe you pick up boost. That has to be freeing up more air than the stock s/c set up ?
onebad95 said:
You pick up boost with a powerpipe because with it you decrease the restriction IN FRONT of the blower. Anytime you do this you make it more efficient and it is able to pull more air in per revolution of the blower, so more air is pushed out of it and therefore boost goes up. It goes back to the statement I made above about the KB blower. On a KB, the MAF, TB, inlet tube, etc are all in front of the blower itself. So on a KB, you will see an increase in boost with a powerpipe (a NA one), AND you will see an increase in boost with a bigger MAF and TB. The less of a restriction you have BEFORE, NOT AFTER the blower the more air it can push per revolution. In theory if you add a bigger MAF and TB to a centrifical SC, which are AFTER the blower, you will see a boost DECREASE because as I said, boost is nothing more than a measurement of backpressure in the area AFTER the SC compresses it. So... going back to what I said above, if the fox inlet flows more and is less of a restriction, you should see a DECREASE in boost, not the other way around.
Just remember, boost doesn't equal airflow, its a measurement of the backpressure in the intake track.
I'm gonna be switching to a fox body set up myself this winter. Picked up a system II intake for $300. Gonna hit up the local speed shop for as many stock parts as I can and then go from there. I'm basically doing it becuase i wanna run a blow-through mass air and the fox setup will allow me more room.
What do you think. Would it be correct to say on a N/A setup that if there is proper vacuum pressure at WOT, then the intake is not causing a restriction.
Kurt
Kurt
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