Ive been doing some research into fitting a centrifugal hair dryer style blower to the VP V6 in about a 1 -1.5 years time. Plans at them moment are a Raptor S/C running 10 psi, through a Water to Air intercooler.
Im not going to be rebuilding the engine or anything like that as it was rebuilt to factory spec when the car was built 6 months ago. The only other engine mod I would like to do is fit some high ratio Yella Terra roller rockers lets say 1.8 or 1.9, and im keen to do this soon for a little bit extra before the blower.
Would this be an advisable mod?
Would I need different valve springs?
Does having the higher ratio rockers pose any more risk to the engine than standard ones under boost. i.e detonation.
Also Im keen if theres gain to be had to machine and weld up a twin throttle body setup on the intake manifold.
Are there gains to be had in an boost situation+ high ratio rockers.
What products do you offer and prices?
Sorry for all the questions lol.
Lx-hatch - did you get any answers to these questions? I'd be interested too.
Yeah I have just fitted a set of MACE engineerings 1.9:1 roller rockers and also upgraded the valve springs.
All supplied by mace.
The better springs were only $95 for a set.
gday lx hatch ive just brought a vn berlina manual with a mild cam did the roller rockers and springs make a big difference how many kw approx? price on the rollers would be gr8 mate.
yeah , id also be interested in power increases