Aussie Gazz":2egkp0kd said:
What is the maximum HP N/A you can make with the new 2V , 250hp? . 300HP?, 350HP?
Yes, all the above if you meet the conditions of the PLAN formula.
Basically, you can
Pressurise the engine (turbo or supercharger),
alter the:-
Leverage (by stroking the engine or making the breathing, cam, intake carburation and exhast more efficient, or reducing internal friction),
raise the
Area of the piston by boring it out,
or increase the
Number of revs per minute.
Mikes Classic Inline head works on both L, by increasing the efficiency of the head. P, A and N need to fiddled with after the head is bolted on, because on its own, the head is restricted hugely by the cam, carburation and exhast system. And once you've spent a few dollars on really good induction, a turbo engine looks a whole bunch more inviting.
Actual horsepower will depend on how wild the cam and carburation and gearing has to be, and the end use, be it street, boat, drag strip or offroad in a Bronco. Generally there is a formula which allows you to turn the peak CFM the head flows on a flowbench, into flywheel hp.
If you run a 2 or 4-bbl carb or CFI injection, the maxiumum power will be heaps less than triple carbs or port EFI. Engine rpms over 6000 rpm are unlikely to be used for street engines, because its impossible to gear them so you can drive them on the street with an auto or manual gear box. So if everything is optimised and with an engine reving to 5000 to 5500 rpm, you'd get 1 hp per cube for a 4-bbl 200 cube engine with ease. So 200 hp for a 200 if its modified with a 264 degree cam, and perhaps 250 hp for a 250 if its modified with a 272 degree cam.
When you add triple carbs or a good EFI system, power goes up about 10% on a 2 or 4-bbl because you can pluse tune the intake fuel delivery. So you'd may get close to 220 hp from a 200 with a 264 degree cam, while 275 hp wouild be easy from 250 cubes still with a fairly mild 272 cam. If you go for wilder camshafts above 280 degrees, you can easily get over 230 from the 200, and about 290 hp in the 250.
That is about the limit for steet use. To get around 300 hp from a 200, and over 350 hp from the 250, you have to get into very smart dyno tuned engines which can rev to about 6500 rpm, and make power at 6000 rpm and be boarderline streetable.
The head is the gatekeeper to performance, the cam the heartbeat, everyting else revolves around these two.