VN_Luke
ƃuoɹʍ ʇsnɾ sı sıɥʇ
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Man i just read that whole thread, what a great find and an equally good read!
I'm glad so much of it made sense to me, kinda lessened the confusion about the topic! Anyone that hasnt read it, should!
I know it's been changed around a few times, but essentially it'd be agreeable to only have the one IC for numerous good reasons. Now which would be better: intake>turbo>cooler>supercharger inlet>intake manifold, or intake>turbo>supercharger inlet>cooler>intake manifold, eg on an m90 equipped car, the piping runs like this (not a commo i know but shows the piping well):
I'd be leaning towards the first option though, having the cooled air from the TC then IC entering the supercharger inlet to be boosted again, then into the engine.
Just thinking about this from a layout point of view also. I originally planned to go turbo only after running the M90 for a while. I've always liked the idea of having the turbo off to one side, preferably on the passenger side of the motor as opposed to right in front of it. This is for both looks and accessibility to parts of the front of the motor. I understand it may be better in terms of functionality to have the turbo right in front of the motor, as it's more likely the turbo would be receiving exhaust gases from both banks more simultaneously than if it were off to the side. The decision made here will obviously also determine the way pipes are run both to and from the turbo and cooler, then to the s/c inlet.
I'd like to hear people's thoughts/experiences with either or both setups and what they think would be better.
I know it might seem like the layout isnt what should be worried about so much at this stage, but i feel like if i've got the layout down pat then i've made a start!
As for turbo sizing, Commotion recommended me either a t04z or gt4094, but that was to run turbo-only. Thoughts? I'm not really up to speed on turbos at all to be honest, but would gladly be shown the way!
Cheers
I'd personally go with intake>turbo>supercharger inlet>cooler>intake manifold.
My reason is that the supercharger can deal with hotter air much better than an engine can ...
What intake temps are guys getting with intercoolers on just a M90 supercharged setup? (at whatever boost you want to run)
Turbo at the front of the motor just makes for easier piping, plumbing etc. Just lots of room, to work in/with. Notice the factory buick GNX setup
As for the turbo choice - I reckon the ONLY way to do it is to ask someone for a drive of their turbo car - or even to go for a spin in a turbo car, with a similar size engine and similar sized turbo and get a 'feel' for what they are like!
... And then remember that you can get (hopefully) the same top end power that you felt in that car, and have the turbo come on noise MUCH quicker!