Hi guys, I am looking at a couple different power-adder options to increase my boost.
To begin with, yes, I know how to use the search button and have already gone through a number of threads. It appears that 5% can be run on a stock car but it is risky. Since one of the largest sources of exhaust restriction (besides the 90* bend cats) is the resonator, which has been replaced with a magnaflow resonator unit. The cats themselves are going to be replaced with an easier bend of straight pipe. I am not sure how much backpressure this alleviates, which is why I am asking.
To start with here is the car's current setup.
Strong running 1990 5-Speed SC, makes about 6 psi at 2000 or so, and hits the proper 12psi or so it's supposed to have under load at 4700-5500ish.
All vac lines under the hood have been sealed more firmly using heavy duty zip ties as clamps. Car runs cool, and idles around 650-700.
Currently the exhaust system is STOCK except for a magnaflow resonator. I am, however, going to eliminate the cats before adding the pulley.
I am looking at a combination of the following:
10% O/D Crank Pulley
5% O/D Crank Pulley
1/2" Top
3/4" Top
What is the highest O/D I can run to the SC without seriously endangering the headgaskets with just deleted cats and a resonator?
I would like the car to look as stock underhood as possible. I am also not really concerned with 1/4 mi times so much as I am concerned with overall RWHP and minimize boost loss across the board.
I do not have a fortune to spend on upgrades, but figure that this should yield the best results for the money it costs, or more simply, best bang-for-the-buck.
Secondly, with the resonator, a 10% OD and 3/4" top on an otherwise stock 5spd SC, what kind of RWHP/RWTQ will I be looking at?
Thanks much,
Ghost
To begin with, yes, I know how to use the search button and have already gone through a number of threads. It appears that 5% can be run on a stock car but it is risky. Since one of the largest sources of exhaust restriction (besides the 90* bend cats) is the resonator, which has been replaced with a magnaflow resonator unit. The cats themselves are going to be replaced with an easier bend of straight pipe. I am not sure how much backpressure this alleviates, which is why I am asking.
To start with here is the car's current setup.
Strong running 1990 5-Speed SC, makes about 6 psi at 2000 or so, and hits the proper 12psi or so it's supposed to have under load at 4700-5500ish.
All vac lines under the hood have been sealed more firmly using heavy duty zip ties as clamps. Car runs cool, and idles around 650-700.
Currently the exhaust system is STOCK except for a magnaflow resonator. I am, however, going to eliminate the cats before adding the pulley.
I am looking at a combination of the following:
10% O/D Crank Pulley
5% O/D Crank Pulley
1/2" Top
3/4" Top
What is the highest O/D I can run to the SC without seriously endangering the headgaskets with just deleted cats and a resonator?
I would like the car to look as stock underhood as possible. I am also not really concerned with 1/4 mi times so much as I am concerned with overall RWHP and minimize boost loss across the board.
I do not have a fortune to spend on upgrades, but figure that this should yield the best results for the money it costs, or more simply, best bang-for-the-buck.
Secondly, with the resonator, a 10% OD and 3/4" top on an otherwise stock 5spd SC, what kind of RWHP/RWTQ will I be looking at?
Thanks much,
Ghost
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