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01-08-2016, 02:55 PM
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(Thread Starter) |   Not Ranked : 0 score  Valve spring kit i dont know is this good sub forum to ask, and if is not please move topic to correct one. I have question for you, what valve springs do you use on your big turbo setup? i have 91mm turbo supertech valve guides supertech valves cosworth cams and upgraded cosworth retainers KK3459 kit* (for which i found data, they are 44lb seated pressure) now second time same thing happens to me, as soon as fully warmed up engine sees 15psi boost or more, piston hits valve (on 7000rpm rev limiter  )so im getting to conclusion that this valve spring retainers are not good enough for this boost level. can you share your experience with valve springs? * i have duratec 2.0 not 2.3 DISI, bit it is very similar engine. thanks guys |
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