If you're set on keeping the VF34, stick with the top-mount. You won't see a lot of benefit going to a front-mount and you'll lose a lot of throttle response.
More boost will give you significantly more torque and more mid-range but the boost will taper off at higher rpm and the VF34 will be quite far out of its peak efficiency. Intake temps will soar and you've got a much higher chance of damaging your engine. The P20 housing will help a bit, but not a lot.
The improved heads/cams will give you more top-end but it'll be a little gain for a lot of coin. I suppose if they're coming out anyway it's a great time to do work.
I would say 300HP/400Nm is a about right for a highly boosted VF34 with cams.
Have you got a better wastegate actuator and a 3-port? You shouldn't need to upgrade your fuel pump or rails for 300HP. Injectors are a good idea (I saw you included them in your list).
Quote:
Originally Posted by RichX
When i decide to put a new engine in, I was wondering ... probably wouldn't be keen to put a bigger turbo, as i like the VF34 being really streetable.
So, I was thinking a crate 207, perhaps with cams, reconned heads, 1000cc injectors, STI TMIC with waterspray (already have), or FMIC if required, then boost up the VF34 to say 26-28pound, add a P20 housing (maybe), but keen to keep the P18 to bring it on boost sooner, get a tune and then winning?
Where are the sensible limits of the 34? She's tip top at 21psi right now, has been for ages.
The 207 should be alright at that boost level with regular services and maintenance?
Sound like it would give me 300horsies and 400+nm of torque at that boost level?
Would it be wise/should i require the P20 for better flow?
Reconned heads flow alright at higher boost levels?
For said boost, fuel system? Parallel rails, what fuel pump? Running a Walbro currently.
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