It is going to take much more than that to make 200 crank hp out of a GA.
It is posible but it will take some custom work. The JWT cams are not going
to be full race cam, but hot street cams designed to be the maximum that the
stock valve springs can take. To make that much hp, you will need rev's and
really hot cams. The car will not be very streetable either, figure very
little power below 4500 rpm. Since no one makes these sort of cams for the
GA, then they must be engineered, figure about $3000 for a consultant fee,
$1000 to make a master, etc... Then a few more grand to engineer retainers
and valve srings. You are not going to make this power with cheap regrinds,
no matter what the grinder claimes.
You will need compression also. It is very hard to make more than 11.5:1
work on pump gas and you will need more than this to make 200 NA hp. I hope
you are not planning to run this on the street. It will also take more than
just minor headwork.
My SR makes a little over 200 crank hp and is on the edge of being
streetable with pump gas, with acceptable low end torque with 400 more cc's
of engine displacment. A 1600cc will be much harder to do this with. Ask
Bob Legere who is the leading expert on building GA16's on this list.
I would sugest that if you are going to make forged pistons and rods, them
forget the sheetmetal manifold and do a low compression bottom end and go
turbo. This will be doable and very streetable with the potential to make
much more than 200 hp.
Mike
>The first thing I plan to do is to rip out the crank and shave the counter
>weights and spin balance it. Then micropolish the journals, add stout rods
>and higher compression pistons. I can get custom units for 1100.00. The
>head will be ported slightly, mostly exhaust ports, but polishing the
>combustion chanbers and valve seats smoothing them out nice. Add stainless
>valves and stiff springs for valves, JWt will have cams so that is another
>thing in dealing with the head, not to overport it. I plan to build a
>sheet
>metal intake manifold like the STR units outfor hondas. injectors will be
>from RC engineering, the computer will be JWT SER unit. I bought a SER TB
>and MAF to work on the motor too, along with the pully and stuff. My uncle
>is modifying the oil pump to be high volume. I may add the oil pistons
>coolers from the SR20DET. THis will help with heat when road racing. I
>may
>have the pistons Swain coated for heat also. This helps with detonation.
>Header will be a new 4-1 unit custom built be me and uncle. Good for about
>200+ hp easy. I also use the PRR cold air intake and that will be carry
>over
>to the new car. I may supercharge with a Paxton type setup further down
>the
>road
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