simonmarcoux
New member
J'aimerais bien savoir si quelqu'un Peut m'expliquer c'est quoi la difference entre un moteur sti v7 v8, les tramssmission, quelle version va dans quelle model de sti, la difference de puissance ?
Merci
Merci
excellent, yes I got confused.Here, from another forum :
JDM V7 comes with forged pistons , V8 comes with hyperuetic pistons , so internals in V7 considered less prone to detonation and are stronger .
V7 comes with VF30 , which is similar to a VF34 except its not a ballbearing , its a sleeve type . The V8 comes with VF 39 , quicker spooling because its twin scoll and has a P25 turbine side compared with VF30 which has a P18 size turbine and is single scroll . Both roughly make the same power however .
V7 has unequal length headers , hence u get that typical boxer rumble , which is lost on the V8 which has equal length headers .
V7 no DCCD as in V8.
advantage of V7 , because its single scroll , upgraeds such as uppipe , DP , and all MHI 16g , 18g , 20g ,are straight bolt ons . The V8 , difficult to get aftermarket twin scroll DP and they are far more expensive , if u want to upgrade turbo , twin scroll after ones from APS are very expensive . If u want to go 20g , have to change headers , uppipe and stock DP .
Only advantage is the VF39 spools about 200 -300rpm sooner than a VF30. Both engines otherwise are similar . Heads are the same .