Quote:
Originally Posted by Robin Hood
No offence, but you didn't study engineering did you? 
I have.
Edit: If a N20 rates at 275HP at the crankshaft, then a N55 could do 275:2(litres)=137.5 x 3(litres)= 412.5 HP.
That's a lot.
Cheers
Robin |
Exactly -
Calculated HP / Liter for each engine
N55 - 328hp/3L = 109hp/L
N20 - 270hp/2L = 135hp/L
The N55 is most likely stressed less than the N20. As Robin pointed out, if the N20 was "grown" into an N55, HP would be closer to 400HP, more than what you can get from the N55 with tune only. I don't know if the N20 has been beefed up with stronger internals, but it's definitely stressed more.