I did'nt want to make a new thread so I'm askin here.
I had a compressiontest today before ordering my Vortech next week.. I drove the car for about 10 mins before i got to the dealer (B/C I had read that the engine should be warm) well it took him about 1 hour to get the spark plugs off, and by the time the engine was cold again.. is that a big problem?
my engine is at about 70K miles

but the reading were really good.. I think?
185-195psi all of them

 

hey im in the process of getting my vortech instaled.. i have the ur pulley set.. what would happend if i kept the ur pulleys and didnt put the stock crank pulley? does i lose boost with the ur pulleys?

 

they are underdrive pulleys?

If the crank pulley is smaller than the stock crank pulley (which i think it is) then you will produce less boost.

Truthfully that can be compesated for by a different pulley on the blower. What i would be concerned about is that most underdrive pulley's are cheap junk. They lighten them to "produce more power" but that also means more stress is transfered to the crank. I would use the stock one or a nice dampened one from ATI or fluidyne

 

those readings sound fine.

was the guy a moron? it literally takes 5 minutes to get to the spark plugs

 

ok, got a question, what should be the target boost?

2.87 pulley
600cc injectors

what else should determine what should i aim for?

oh, and it's a vortech sc-trim.

thanks!

 

not sure the question. There is no such thing as a "target boost".

With a supercharger your pulley size along with the restrictions (exhaust, intake, etc) will determine your boost. Adjust your pulley to adjust boost and power.

 

I was thinking about getting my jackshaft pulley sand blasted for a little more grip.

 

hey i just got my vortech installed on my 03 de motor.. i got cams and ful bolt on.. with walbro fuel pump.. and as of right now im unttuned and im just driving and staying out of boost.. the cars drives perfect...i gotta drive it untuned till tuesday.. than driving to rt tuning for osiris dynotune... my air to fuel is are in the 13s and-15s normal driving... i punched it once and it read 11 to 5 -11 to 3 is it going to be ok to drive it tomorrow until i go first thing tuesday for the tune.. just dont want **** blowing up

 

youll be fine..just stay out of boost until tune if your worried

 

yeah it doesnt feel much faster as of right now.. but again i have really not went past 3500 to 4k rpms

 

Thanks binder..

umm, i wasn't too sure of the question myself..

what i meant actually is, bolting in the supercharger alone, ppl usually get 8-9psi (as a stock notion) or even stay at it just for the sake of being safe.

with my setup, how much should i be looking at? 11psi?

hope that makes sense now.

my setup:
tuner kit Sc-trim
600cc injectors
2.87 pulley
walbro
borla td exhaust
berk hfc

 

i have a very similar setup to yours and the max boost i've seen is 13.4 psi. during normal daily driving with some spirited runs I usually see 6-7psi not getting over 5k rpm. you'll start to see low vacuum / start building boost around 3300 rpm with the 2.87 pulley and the BPV adjusted down to 6-7 threads showing.

 

hey i got my vortech on and tomorrow im driving it to RT tuning to get it tuned.. i have an 03 with full bolt on and cams.. and i will be using stock 3.33 im using deatschwerks 600cc ,walbro 255, and bigger maf so i dont run out of voltage.. im geting a dyno tune osiris uprev/ the dyno is a dynojet.. what numbers do u think i should be expecting?

 

11psi would probably be a good call. 6700rpms (stock rev limit) i was sitting about 11.5psi but i have headers, test pipes, and the borla TD. My headers and TP will flow a little more than your stock manifolds and HFC so your psi might be a slight bit higher. I wouldn't say over 12psi though.



depending on what cams you have an how your tuner decides to use them the norm for a 3.33 pulley on vortech for our motor is low to mid 300hp range. Every dyno and every car is different though.

 

^thanks binder....

 

came back from rt tuning.. i got an 03 vortech z with full bolt ons plenum spacer and bc (264 cams) with walbro 255 and 600cc deatshwerks... i ran stock maf and ran out of voltage at 5800 rpm.. tuning with osiris.. at 5800 rpm.. i made 377whp.. and 310 torque on a dynojet. pretty strong numbers for a 3.33 pulley in a few weeks i will tune with maf.. and see what i maake at 7200... im hoping for 390!

 

wow those are good numbers for only a 3.33 pulley. what kind of cams are those and are they loopy and give off check engine lite?

 

no there not loopy.. no check engine.. there brian crower stage 2 cams.. they work amazing with the vortech .. when i go back to rt tuning in 2 weeks i will tune with bigger maf so i can rev to 7k... and make 390-400 whp.. i made 377 at 5800! and most of that power is because of the cams

 

Nice numbers for the 3.33 pully sounds like there is allot more power left in there.

 

yeah.. too bad the rods can't handle them huh?