Quote:
Originally Posted by phloozy
the internet needs a sarcasm font :P
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the entire thread is unclear
are we shopping girth length depth or technique?
want to go longer? harder? faster? deeper?
Cause baby I got all 3.
LOL!
sarcasm and humor aside, and with a disclaimer that i have no seat time in the other PD out there, but know my setup well:
I'm ONLY trying to help with sharing what I have learned so I hope no one gets bent...
I tested this myself because when I first got my kit it was cool out and not worthwhile testing when its 85 out...in my experience, the best test of an FMIC is when its hottest out, the hottest conditions you would track in
my body limit is about 100-105F, too old for any hotter
the net FMIC temp rise with my 10-10.5psi of boost on a 100+ ambient day here in AriHotAsHellZona is about 30F which is pretty darn good, that is, I did some tests when it was about 105F and logged results at 85mph(some of the faster straightways at my local track I see 100+ some I see 60 in 2nd) and got IAT equal to about 135F after a 15 minute WOT beat fest to get some heat soak, this is converted using google and taken as a C number outta ecutek log.
ymmv
centri blowers not reaching full boost before redline is true, but what ya gonna do with 15psi of boost at redline anyways without a fully built hardened motor? I would do 11ish psi on a street car with confidence and 10ish psi on a track car, not that you cant do more, just that I dont feel comfy pushing my reliability that far when driving like a maniac around a track intentionally
Rather,with the centri there is a very very wide range of pulley sizes with such a large boost plot to work with and so many CFM on tap, you can run anything from 3.6" if you need the most outta fuel economy and give up a little oomph, you can run a 2.87" pulley (and smaller yet!)very very safely on the new oil fed sc I am running. on the self lube, you can still Run a smallish pulley and add a wastegate, and a smaller pulley will build you more boost sooner, so much so that you build too much boost and need a wastegate to blow off excess, I dont know what the official word is on warranty from either vendor with smaller pulley use, but you can run the 3.125 pulley too.
While I am positive the 2.87 runs fine on a streetcar as I ran it extensively myself, I am also not at all comfy taking that to the track, self lubed that is.
see lower photo: infact you can run a 3.00 " pulley tho that one only comes in a 8 rib version, the spacing is the same and runs our 6 rib belt just fine, both give the centri lots more of that down low push the pedal and go feel with the best of both worlds being that theres tons of air to play with up top, as a street setup.
I didnt track wastegateless with anything smaller than a 3.33, and that was a blast too. The FMIC being oversized to hell makes for a great track setup, and the oil fed SC offering/upgradepath may weigh or may not weigh in the OP's search for an answer. My personal recommendation is to not go smaller than a 3.33 at the track but your tuners advice is what you pay pay for.
I am certain this will be an easier question to answer when you actually have apples to apples to compare, ie vanilla offering of both kits vs eachother and then built assed versions of both kits, take both head to head.
sometimes the dyno queen IS the track queen, but thats often and usually a very pricey build to pull off.
others can often be a track whore but not the peak output on a roller
I'm going for staying power, finishing time after time and being able to use all of my available at 'max duty cycle' to pump it harder longer, and thast often faster in the long run.
other can have peak output on a roller but to do that sustained can be a handful of money
potentialwise I think BOTH kits have alot to be said for them, tho having not seen the 'dark side' IC offering, thats the one I wanna drive and see for myself, truth be told, for now with the current offerings being compared, I prefer the turbo like deal-when you use the cars oil system and augmented cooling system to bolster the boost delivery system with ample cooling, you can oversize in a major way and thats great for us track day builder types.
back to shits and giggles!