for what its worth....
procharger, not a great idea, performance wize, but an easy way to get forced induction on a car.
blow thougth on the stock carb? probly not a good idea. the carb suck. but some one recently dumped all the electronics on it and was getting in the 45 mpg range....
and the stock carbe has never been under boost and documented. so things like float colapse could be an issue and jets, as pointed out.
a webber carb would be better for this.
get a wide band o2 sensor. even a cheap one is better then not haveing one.
i would still say get a megasquirt for fuel injection.
i would love to see a super charged 3 cyl mk1 !
edit: pro charger a-1p, 325 cfm. (morre than enough, 100 hp max stated)
75,000 max rpm. / by 4.11 = 18,248 rpm at pully.
max rpm of motor, 6000 (really is 4500 on stock oil pump. subject for another day)
so to get max rpm, 15 psi out of a-1p u need a pully ratio of 3:1.
lets assume u use a pully at the same size as the ac pully. 1:1.
assuming SC is linear in boost (should be)
6000 * 4.11 (internal speed step up ) 24660 rpm
75000 / 24500 = 3
15 psi / 3 = 5 psi
325 cfm / 3 = 108 cfm
so, at 5pis g10 needs 113 cfm. too small.
2:1 would be better, but it looks like after some quick and dirty math you might want the a-1r model. 450 cfm.
so lets run the math again (ill skip to the end).
basicly 3/cfm = 150. psi is the same.
so, at 6000 rpm, we see a max of 5psi boost, and 150 cfm (113 needed for 5psi)
this is running 1:1 pully ratio, pretty much the wose case senario.
u need to run some more math, to get the stock pully size for the SC as well as the size of the AC pully, to get a ratio. also becareful to not over speed the procharger. bad idea for a oil lubricated SC.
u can play with the math and see when boost comes on and what ur red line is. (this might be fun on the stock oil pump, supporting only 5000 rpm
)
so lets run the math again, this time assuming a 5000 rpm redline and a A-1R 450 cfm 15psi procharger and a 2:1 pully.
18242 rpm input
5000 rpm * 2 = 10000
10000/18242 = 54% of max
so at 5k, 7.5 psi, 225 cfm.
and again,
2000 * 2 = 4000
4000/18242 = 21%
450 * 0.21 = 94 cfm.
15 * 0.21 = 3.15
so we would see 3.15 psi of boost at 2000 rpm with a 2:1 pully (doable me thinks) and alot more cfm than needed.
then again, the lower 325 cfm model might work better here in my armchair boosted g10 motor.
crap, now i want one....
look what you have done!
_________________
"muchos tanks, village destruidos"
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"its the dreams that keep you alive"
-vernon wasser-
88 sprint, 4dr sold
87 turbo 2dr, never ran
86 sprint, 2dr current DD!