0.5 bar is actuator pressure, the remainder is brought up by the boost solenoid bleeding it off.
On the mods you have dont go past .8 bar, you need other things before you can run decent pressure - and of course super unleaded at least.
0.5 bar is actuator pressure, the remainder is brought up by the boost solenoid bleeding it off.
On the mods you have dont go past .8 bar, you need other things before you can run decent pressure - and of course super unleaded at least.
I ran mine at a bar safely with a walbro in it
Im showing 0.7 4th and 5th, its 0.6ish coming up to 4th. I believe thats the norm for standard boost on a standard ECU?
I take it your not running any kind of manual boost control? Like sideways sais, up the boost from 0.5 with a MBC or EBC, personally id keep it at stock boost though, i dont like the idea of changing my boost without being able to monitor my fueling etc. But im a paranoid freak.
I swear 3rd gear in the sr has hardest pull on boost? I boost at .8 bar in 3rd I can't tell in any other gears.. either going too fast and or can't take eyes off the road lol
.8 bar.. pftt the bigger boys on here only get up for a minimum of 1.5
Ill double check on my way to work for 3rd lol, but its definitely lower in 1st and 2nd. I ranted and raved about getting my boost gauge fitted, i think iv glanced at it once the whole time iv had it haha.
A standard turbo should be giving your chosen maximum boost by 3000rpm or so.Originally Posted by s15 andy
4600rpm indicates a massive boost leak.
or, (this is a blast from the past)
The pivot that the wastegate turns on, is secured to the turbo by one spot weld. If that weld is cracked (it does happen) then the wastegate can get sticky and stay open when it should be closed.
Lmao sideways, .8 FTW. Forget fast and furious. Slow and flaccid all the way!
hmm interesting. . My boost on standard tubby peaks at 6K lol and I'm almost certain there's no boost leak. Could be wrong
Haha I mean standard tub and block. If someone is boosting at a bar.5 on standard tub and internals. . . He deserves a medal.8 bar.. pftt the bigger boys on here only get up for a minimum of 1.5
Ive had 3bars of boost before. Felt really sick after it though, too much chocolate. But hey, im mad like that. Sometimes you gotta do what you gotta do.
I didnt want to say it, i am having a month off.
Such an original joke
Edit: mines, not sideways lol, reading that over it looks a rather wide arse comment i made haha
Last edited by mcleansc; 08-12-2013 at 22:02.
3 bars of boost on standard internals.. mad man. You don't need a snickers. . You're already nuts!
Don't fret petal, I'm picking up the slack.
There are a few issues mixed up into this thread, but this seems important to repeat.
A standard turbo should reach full boost by about 3000rpm.
what "full boost" means will vary depending on what BoostControlling device you have fitted.
Standard is about 0.7 bar (10psi)
The turbo boosts, and at about 3000rpm reaches a healthy level.
Nissan decided that to be 10psi.
Many SXOC people have decided it should be more than that
Higher than 3000rpm, the turbo would simply run away if it is not controlled, so we have boost controller devices.
The boost level should be pretty constant from 3000 up to the redline.
This does suggest a sticky wastegate, rather than a boost leak.
(Some time ago) my own car decided to have little boost (on a trackday= annoying) until above 5000rpm. A whack with a hammer fixed it for a few hours, but it did need a replacement turbo for a permanent fix.
The spot weld in question was too far gone in my case.
Checked this morning on my way to work to see where mines was boosting, full boost at 3000 RPM at 0.7. The man speaks the truth!! At least something is working as it should on mines.... For now.
So im guessing his stock boost controller is faulty, which is why his car is only 0.5 boosting actuator pressure?
Right cheers for the help I'll take a look at the actuator see if there's anything wrong with that and the boost controller how would I check that? Do s14 or any other nissans have the same boost controller?
Mhmm if the actuator was broken then it would have no limit to boost. I.e wouldn't stop at 0.5bar.
I would check your boost controller first.
I had a similar problem with my 15.
Reply With Quote
