aviator

Johnny
Great to hear about all the new items coming out.
Like coed I'm more interested in low buck stuff just now... [headers please haha], will be getting a set of cams when I change the timing belt next year or so,
But I do like to hear about the other stuff too...
My goal is always max. fuel econ. but with max. perf. as well.
keep up the good work Aviator...
what about adapting a MR2 supercharger to mount to the 3.0?

chimmike

the MR2 blower is FAR too small to be efficient on the 3vze, displacement wise. It'd be better to match that of the blower from the 3.4 or GM's 3.8L plant.

Weasy2k

Bumpin' Yota,
The finish is similar to other MLS yes, cometic offers a bit more flexibility but the best thing is to at least get the heads milled a bit as aluminum tends to distort easier then cast iron.

What kind of headstuds you working with? I approached ARP for the 5vz but man oh man were the costs high for me...im looking for alternatives at the moment.

chimmike & palmofyourhand,

The hydra will run you over 1500 yes if you want to go FULL out then that is what it will cost. However once i begin the testing of the smt7 I will at least see how far we can push the stock ecu before needing to go standalone. The smt7 still utilizes the stock ecu but works much better then its smt6 brother. It has the ability to autotune itself so removing the afm is a possibility without taking too much time (its possible to do this with the smt6 but its all manual stuff). The SMT7 itself is around $575ish i gotta work on getting a new price sheet as the dollar changes everything.


aviator,
I dont have space or equipment to build header/exhaust stuff One day i will start that, but my focus is on engine work at the moment

The mr2 s/c is tiny even for the mr2 I have other ideas I also have 2 gm s/cs sitting here as well.

Oh my lots of work to do!

chimmike

so the smt7 is essentially a piggyback much like the e-manage ultimate in that it can eliminate afm/maf and convert to run on MAP sensor type deals?

hmmmm.

Weasy2k

^ You got it...
its a pretty easy setup as well...i plan to test removing the afm in favor of a MAF. Mafs are better for N/A setups in my opinion

aviator

Weasy thanks for the responces I regularly "lurk" around one of the local scrap yards that has a huge selection of GMs which models should I be looking at for SCs? anyway to tell if the SC is in reasonable condition before I pull/pay for it?

chimmike

+1. MAF's are generally easier to tune and run smoother too.
Please keep me posted as to how this goes!


As for the GM blower dilly, $300 sounds about right for a GM blower in good shape with pulley, maybe less.

It'd be nice to get a centrifugal blower on the 3vze, as they don't run quite as hot as twin screws (the compressed air isn't as hot, that is.)

chimmike

pontiac grand prix GTP's were supercharged. mid to late 90s to early 00's.

Maybe pick up a blower from the 3.3 supercharged Nissan Frontiers too.

Weasy2k

ebay! thats where i got mine for 50-80 bucks

If i build a kit it would be a rotrex style...more pricey but very effective.

chimmike

centrifugals are nice.

Weasy2k

Smaller too and in the end the cost may be less because you dont need to make a custom manifold for a gm s/c to bolt onto it...

chimmike

this is true, however, you still come into the issue that centrifugals bring on boost similar to turbos, in that they don't have the instant-on like a twin screw style blower.

I've seen a TRD setup (I think that's what it was) using a standalone twin screw blower, I can't remember what from, but that would be easy to use iirc.

I know your goals on the power project so I don't blame you for using a rotrex unit.

My goal is to increase low and midrange power for off-road prowess.

paulmofyourhand

iirc, MT Goat runs a 3.4L Supercharged (correct me if im wrong) and has issues with trying to keep it running at an acceptable temperature.
he's tried many many cooling tricks to get the job done

and to the OP. how do you plan on cooling a BUILT 3.0L Supercharged motor?

btw, im not trying to reem you or anything, i just want to see how you will fare with the extra power

Weasy2k

Um...the stock rad is GIANT, turbo 5vz-fes WITH a/c have not had problems with cooling over 400+ hp....i wouldn't worry about that. A lower temp theromo would prob help.

Heck i throw 5vz-fes into N/A based mr2's and cooling is still handled by the smaller rad that cools a 2.2L 4banger...toyota over engineers the rads

Weasy2k

http://www.urdusa.com/images/dyno.jpg
Rotrex....gain in power just off idle..that should inpress anyone Rotrex units are the most effective s/cs out there in my opinion they have low mid and top end power and deliver that power very well

chimmike

rotrex=$$ though haha.

I'm still unsure if I'll do much more beyond headers on my 3vze. I might do cams from you though, when I do my belt in 20k or so.

I can't justify spending that much on the 3vze just yet.....but i also can't justify $2k+ on a sbc swap either.

Weasy2k

Hehe and i dont know when ill ever make s/c kits...one day maybe when i have the spare money to do so as people just dont think its worth putting anything into the 3vz-e yet 100hp for 4k sounds nice

aviator

Still need to verify a few things...
so these sc in the gms is like one of these rotrex things?
or is it one of these twin spool jobs?
they make power from the get go or are they high rpm screamers only?

chimmike

GM blowers are twin screw, positive displacement blowers, they create boost almost instantly off idle (full boost generally) but their power tapers off up top.

Centrifugal blowers (like Rotrex's) act more like turbos, and don't achieve full boost until a certain point on the powerband.

aviator

Thanks... sounds like the general's blowers are the ones I need to look in to since my truck only sees top revs when my wheels are spinnin' on the ice.