Here we setup some projects around this 1600turbo
http://shoptalkforums.com/viewtopic.php?f=3&t=133516http://shoptalkforums.com/viewtopic.php?f=3&t=136296On this link see the low post.........
http://www.volkszone.com/VZi/showthread.php?t=715005&page=3I asked the question several places for the next engine
Crank stock, balanced 9500rpm, 8 doweled
cylinder 86mm
Pistons - of mitsubishi evo 10
Cam - engine tcs20 tcs30 ,engine fk46,fk47,fk48,fk10,fk87,fk89,scat c55,c56,c85,c89) With 1.4 rockers
Which of these achieves higher RPM
More RPM more power
Lifters - 28mm
Rockers - Stock
Carbs - Webet 40dcot
Exhaust - Hand made (1-1/4) 36,4mm
Turbo - T28/4 or T3/4 1bar(~14psi) Custom
Head - 40x36 ,40x34 or 40x32

Ports - intake - 35,2mm or 36mm

and exhaust - 36mm or 34mm

But the head hinge RPM
the valve inlet port and depends more RPM , from the output port as easily exercise.