hey john mate.i asked the spoon technician the same question and he says the b16b engine can take up to 9300rpm on standard valves and springs.ive have no problem at all with mine![]()
i have just installed mine.
vtec comes in at 5000rpm and cuts out at 9100rpm.
like jugbugz, i have found that between 5000-5800 rpm, there is a little stall in power, then piling it on hard from 6000 rpm onwards. i will drive it a little longer before i write a review or something
HTH