Ques Regarding Stock R33 Turbo

[sneki81]

first off ill start by wishing everyone a happy and safe new years eve. party hard .

but what i want to know is, i have a standard s2 r33gtst. it has stock exhaust, intercooler, air intake etc.

on the rev tacho it has the boost gauge which has -7, 0, +7 and a line in between these.

just say im driving and i put my foot flat to the floor where should i expect to see the boost level rise to.

mine goes to the - in between 0 and +7. is this normal for a my car running standard boost or should it be rising more than that.

this is my first skyline so honestly its not something ive really had to pay attention to before.

if someone could let me know wheather this should be ok or not would be great.

cheers all- pete

[tridentt150v]

Bog stock, you'll maybe see +7, but you have to floor it and hold it. Boost starts straight away, but you won't see full boost until the motor winds the turbo up. I'd say boost will begin happening at 2500 and top out at 3500-4000rpm [that long ago since std I'm having trouble remembering].

[sneki81]

hhmmm. ok. well if it doesnt reach the +7 mark something would have to be wrong. im not a street demon so i dont give it all it can for aslong as i can but it does get revved out occasionally in 1st and 2nd. it feels as though when it hits 4500rpm or so it gives abit more of a kick but it definetly doesnt go to the +7 mark. if i should be seeing it hit the +7 mark and it isnt what possibly could be the problem. obviously i want it to run as good as its designed to but like i said before its my first skyline so im not quite sure what the stock power should be like.

[Get EPIC]

On stock guage u will only see areading somewhere abouts where u are getting. If it was on +7 on the stock guage then that would mean you are boosting to about 14 psi which is suicide for a stock series 2 turbo! So yeah about half way between 0 and + 7 is about right

[jaceR33Gtst]

Being stock the car will not obtain full boost until after 4000 revs, just behind the air box you will see a small box with air lines and wires going to it, this sets the boost to 5 until 4000 revs then 7 there after. There is a really good step by step procedure in the DIY section to by-pass this and have 7 constant (somthing to do with cutting the black wire and grounding it from memory) or you can just put a manual controller on to adjust the boost pressure, these are cheap as chips and the pick up is noticibly better down low, but you definatly would want to install a good quality boost guage first just to be sure you don't exceed the pressure. I have no idea what is actually the best boost pressure for stock as i have read pleanty of threads ranging from 8 - 12 as being safe but most say 10psi max for the rb25det. Oh and also the guage in the cluster isn't PSI (i think) so I dont think you are supposed to get to 7

Edited December 31, 2008 by jaceR33Gtst

[JonnoHR31]

stock gauge is mm of mecury i think, with 7 being close to a bar. 13psi on the stock turbo is fine