GenVibe - Community for Pontiac Vibe Enthusiasts

Thought you guys may be interested in this thread from Matrix Owners. http://www.matrixowners.com/ftopic11550-0-asc-0.html

Hmm...I doubt it's been released yet...

quote:Hmm...I doubt it's been released yet...No, not yet. That guy has connections with Toyota. TRD is listing it as coming out this month but I'm hearing September. Should be the same for the Vibe.

Proves that a 1ZZ with an S/C will beat a stock 2ZZ with lift.Got boost?

proves what?

Read the thread. The guy drove the S/C it and it was faster the the XRS he drove.

quote:Proves that a 1ZZ with an S/C will beat a stock 2ZZ with lift.Got boost?SOTP feel can be deceiving.....I'll take my high revs and better gearing.

quote:SOTP feel can be deceiving.....I'll take my high revs and better gearing.No problem. I'll take boost and torque . . . . . and the win light.

quote:SOTP feel can be deceiving.....I'll take my high revs and better gearing.No problem. I'll take boost and torque . . . . . and the win light.Can I go with you Scott?

I am glad to see that the SC is closer to being released...and for those who read the matrix owners thread,..Matrix-T has the same turbo set up as me ....so what we need now is to have the 2zz vibe/matrix and the 1zz SC vibe/ matrix,and my turboed vibe, and someone spraying nitrous...would that be satur9?..in their vibe/matrix.....and lets have that race!...

quote:No problem. I'll take boost and torque . . . . . and the win light.I found it amusing in that thread, that the originator said the S/C Vibe was such a great road race car. It may be better than a Vibe GT, at least on a tighter circuit, I would say ANY Vibe isn't going to be all that great at autocross or roadracing. I really would like to race an S/C base Vibe from a stop, roll, high speed, low speed, and really get a feel for how they compare. It's all speculation at this point.Nova, I guess we will find out soon enough. One thing that concerns me is I don't think they would RATE the S/C at a higher horsepower than the Vibe GT, BUT I really wonder if they're sandbagging the number a bit. Depending on the volumetric efficiency of 1ZZ, going to 5-7lbs of boost could generate a fair bit more than the rated 30 or 40 horsepower increase. If that's the case, then the Vibe GT is in trouble as far as straight-line speed.Oh well, may just have to bust out the Vette then. haha...

quote:One thing that concerns me is I don't think they would RATE the S/C at a higher horsepower than the Vibe GT, BUT I really wonder if they're sandbagging the number a bit.I would say you are correct in your assumption. The same 1ZZ motor in the Celica is rated at 140-hp and chassis dynos have shown that 1ZZ in the Vibe is probably also making that same 140-hp at the crank. So now add that conservative rating of 40-hp from the S/C and you are already at the GT's 180.

quote:I would say you are correct in your assumption. The same 1ZZ motor in the Celica is rated at 140-hp and chassis dynos have shown that 1ZZ in the Vibe is probably also making that same 140-hp at the crank. So now add that conservative rating of 40-hp from the S/C and you are already at the GT's 180.Agreed. I smell another LS1 F-body under rate and overperform deal coming on. I would bet it's probably going to make closer to 190-200 hp at the flywheel and put down some pretty good power to the ground.If that ends up being the case, then an S/C base Vibe will definitely be faster than a GT. Oh well, you still can't rev to 8350rpm!!

I suspect it will be faster than a GT because of the torque but could be rated correctly because the air leaving the sc is hot and without an intercoller the full 10hp per lb of boost may not be available.

quote:I suspect it will be faster than a GT because of the torque but could be rated correctly because the air leaving the sc is hot and without an intercoller the full 10hp per lb of boost may not be available.A booK I once read stated that a roots type blower is around 50% effecient...for reasons of air heating up , and crank hp loss .....and a turbo rebuilder told me that for our motors , you would except around 12hp pr # of boost at 100% efficiency...just to be fair...my turbo man disputed this w/ me.. but ....50% would be 6hpx 7.5 #'s of booost =45hp...= 130hp+45=175hp or 140hp+45=185hp at the crank, but remember the best is that you do the same mltiplying for torque...and youll come up w/ 170ft#'s of tq!!...there is where you will feel the diff between the 1zz SC and the 2zz....it is the torque that lets you feel the power.....and....BTW ...turboes are 85% efficent..which gives the 10 hp per # of boost, and ...I run mine at about 7psi , but 10psi some times.....I am being a little smug....but do the math if you want to know how much powere I am putting down..the good thing about the sc though, is thst the boost is immidiate, where as i lag till about 3k rpms....

quote:I suspect it will be faster than a GT because of the torque but could be rated correctly because the air leaving the sc is hot and without an intercoller the full 10hp per lb of boost may not be available.A booK I once read stated that a roots type blower is around 50% effecient...for reasons of air heating up , and crank hp loss .....and a turbo rebuilder told me that for our motors , you would except around 12hp pr # of boost at 100% efficiency...just to be fair...my turbo man disputed this w/ me.. but ....50% would be 6hpx 7.5 #'s of booost =45hp...= 130hp+45=175hp or 140hp+45=185hp at the crank the reason he disputed this with me is because he says that it is not all about manifold pressure...it is also about smaller turboes heating up the air more... and not moving the same CFM thru the motor as a larger turbo can...and at the same manifold PSI...so...he says, for instance, that he can get mor power out of a t3 turbo , than a t2.5..at the same psi, because the the larger turbo will move more air thru the motor...and cooler at that...and then ther is the IC factor....andddd....matching the exhaust turbines w/ the correct compressor impellors make better efficiency in a given aplication...soooo.... it is not so cut and dry...the lobes on the eaton roots SC turn...intertwined like a gear...or an eggbeater forcing large chambers of air into the motor..which makes immidiate psi..but as the lobes turn, some air bak washes into the chamber, but it still must go thru..but causes some heating...and it is all good , but not as efficient ...as @%^*%*)(*&^%$