Quote:
Originally Posted by MANDALAY
Now can you over kill ? $ are roughly the same so 255 high pressure on with a FPR ?
The stock FPR has a return and also a vent to the charcoal cansister . Do these aftermarket ones have that also ?
The SC is rated up to 400 HP. MORE CONCERN IS NOT TO OVER BOOST.
|
Overkill? Not really. It's only 'overkill' if the return is large/fast enough and chokes causing the fuel pressure to be 'higher' than you want it to. Because fuel volume drops as pressure rises.
A/M FPR's have a return, I don't think I've ever seen a return with a vent to the charcoal cannister
. Perhaps a vacuum line that gets it's vacuum source from there?
Rated HP don't really mean much to me anymore, its just giving you an 'end' number. I'd ask Rotrex for a compressor map (if not on their website) and work the numbers out for your goals, which from what I gather is a large usable power band that comes on fairly early and lasts until redline
.
You might end up going to a larger s/c with a larger diameter pulley to spin it slower at high rpms while maintaining the air volume necessary for your goals... or you could even drop down to a smaller s/c with smaller pulley to get the s/c rpms up earlier, while still having a large enough 'range' before compressor surge (ie:choke point/max safe rpm), and enough airflow to last through redline.
Quote:
Originally Posted by MANDALAY
|
Looks fairly simple, I don't like the air filter/inlet tube at all though. The W/A cooler setup actually annoys me, even though I'm sure it works. And the MAF positioning seems like a really poor design to me. I'm sure it works, but it's not one I'd run.
I'd run the intake to either an airbox, or another area with some good fresh airflow. With the MAF just behind the filter/airbox just like stock setups. I'd plumb a bypass valve between the piping from the S/C to T/B, and the piping from the MAF to the S/C. That will prevent any monitored air loss issues (engine stumble/dying) with running a BOV on a MAF system.
And I'd try and run a 'cleaner' looking W/A intercooler system, where it's more out of sight. It looks like they just kinda packaged that where they could fit it. And in the MR2 engine bay you might be stuck doing something similar, but that's mostly aesthetics.
Andrew