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Peak boost on my setup, gt2860-5, is pretty high. I have around full boost, 19psi, around 4500rpm depending the gear. They are a bit laggy but I start seeing boost around 3000rpm (even lower) so the power is pretty linear but peak boost comes on late.
Edit: Did a bit of reading though this thread. Its true about a turbo, there is only so much air that it can take in. Thats why certain turbos have more power/torque at higher rpms then others its because your not outflowing them as easily. Frankiman makes peak power at 6600rpm and my peak power is much higher (its still increasing around 8400rpm). Its the turbos and the head that make this the way it is (in the case of me and franki, its the turbos and maybe the porting). Also a stroker isn't necessarily going to make more power its just going to put more air into and out of the motor, so you'll get more power at a lower psi but the threshold will be less (as turbos can only flow efficiently up til a certain point). With that said it is possible that the stroker will make more power because there's also a psi level that a turbo becomes inefficient. Its kind of like a game, strokers have a longer stroke so the torque will be larger. Theres two reasons a stroker makes more power; 1. because of displacement (it moves more air over a stroke) and 2. because the crank has more leverage since the point where the rods attach are further from the center of the crank.
Formula 1 runs very small stroke, if I remember correctly from school its around half then that of the piston bore. Formula 1 knows their s***. IMO RB26 > RB28, RB30 is cool but RB26 is a revver and no reason to spend 10000$ on a stroker kit. For 10000$ you can do a lot more to an rb26 then the stroker can do to your rb26.
Edit: Did a bit of reading though this thread. Its true about a turbo, there is only so much air that it can take in. Thats why certain turbos have more power/torque at higher rpms then others its because your not outflowing them as easily. Frankiman makes peak power at 6600rpm and my peak power is much higher (its still increasing around 8400rpm). Its the turbos and the head that make this the way it is (in the case of me and franki, its the turbos and maybe the porting). Also a stroker isn't necessarily going to make more power its just going to put more air into and out of the motor, so you'll get more power at a lower psi but the threshold will be less (as turbos can only flow efficiently up til a certain point). With that said it is possible that the stroker will make more power because there's also a psi level that a turbo becomes inefficient. Its kind of like a game, strokers have a longer stroke so the torque will be larger. Theres two reasons a stroker makes more power; 1. because of displacement (it moves more air over a stroke) and 2. because the crank has more leverage since the point where the rods attach are further from the center of the crank.
Formula 1 runs very small stroke, if I remember correctly from school its around half then that of the piston bore. Formula 1 knows their s***. IMO RB26 > RB28, RB30 is cool but RB26 is a revver and no reason to spend 10000$ on a stroker kit. For 10000$ you can do a lot more to an rb26 then the stroker can do to your rb26.
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