My lack in boost pressure?
- Thread starter Dan3SGTE
- Start date
That turbo looks fine. The wastegate is closed like it should be and if there is no shaft play then it shouldn't be the turbo. You said when you drove it there was a whiring noise when boost should have come in. That sounds like a boost leak. Thats the noise mine makes if an intercooler pipe pops off.
You said you changes the dump valve recently. Have you looked at that and made sure its not leaking boost? You're problem seems to have happened when you changed that.
If it was a cracked piston then you would hear it running on 3 cylinders like a scooby. And it would probably still boost anyway - mine did.
Also blue smoke when it happened could be unburnt fuel maybe from losing boost but you still had your foot to the floor? When it happened was there a pop noise or any kind of uncommon noise?
You said you changes the dump valve recently. Have you looked at that and made sure its not leaking boost? You're problem seems to have happened when you changed that.
If it was a cracked piston then you would hear it running on 3 cylinders like a scooby. And it would probably still boost anyway - mine did.
Also blue smoke when it happened could be unburnt fuel maybe from losing boost but you still had your foot to the floor? When it happened was there a pop noise or any kind of uncommon noise?
Cheers. Here's mine: http://www.civicsportsclub.net/index.php?showtopic=38310
Vid @ 340bhp: http://www.youtube.com/watch?v=wl0O93J2Gfg
But anyway i just read in your other thread that you heard a pop noise. So I think either boost leak or blown turbo. (probably boost leak somewhere)
Vid @ 340bhp: http://www.youtube.com/watch?v=wl0O93J2Gfg
But anyway i just read in your other thread that you heard a pop noise. So I think either boost leak or blown turbo. (probably boost leak somewhere)
Dan3SGTE
Member +
When i was driving it with my foot down it went but there wasnt a noise, just a complete loss of boost..... yeah i agree with you mate, it sounds like when my boost pipe normally pops off but this time all pipes are fine... but will check all joiners when i get a chance as there are some behind the bumper i cant actually inspect properly.....
i have changed the DV recently but i changed back to the baileys today and the problem is still there..... and the car was running completely fine with the new dump valve on for a week, it was only when i put the new 3inch side exit exhaust on and decided to hit 1.25bar of boost....... and also opened the performance up as the last exhaust was restricting it as it was only a 2inch straight through......
yeah 2.0litre mate... last dyno was at a shitty mobile dyno at the pod on the last exhaust and it made 290bhp and 310bls of torque, but believe me its running more then that... with the new exhaust i would say about 320HP.... even with the old system used to terrorize cars it shouldn't be with only 290hp...... and had a flat spot for about 700RPM then went up again?
I will get it on the dyno again once working and remapped with the new system....
i have changed the DV recently but i changed back to the baileys today and the problem is still there..... and the car was running completely fine with the new dump valve on for a week, it was only when i put the new 3inch side exit exhaust on and decided to hit 1.25bar of boost....... and also opened the performance up as the last exhaust was restricting it as it was only a 2inch straight through......
yeah 2.0litre mate... last dyno was at a shitty mobile dyno at the pod on the last exhaust and it made 290bhp and 310bls of torque, but believe me its running more then that... with the new exhaust i would say about 320HP.... even with the old system used to terrorize cars it shouldn't be with only 290hp...... and had a flat spot for about 700RPM then went up again?
I will get it on the dyno again once working and remapped with the new system....
G
gaz_turbo1
Guest
yeah really need to get at all pipe's, take bumper off and check to see if the jubilees tighten right up and dont click over
any pics of exhaust
any pics of exhaust
Dan3SGTE
Member +
thanks for your help mate....
just checked out you r thread and the vid, had a little read through and im impressed to say the least, love the EK's.. always said god forbid it doesnt happen but if i were to write my car off i would love to turbo a civic like yours.....
anyhow will be good to see you up the pod
Dan3SGTE
Member +
yeah gary, will do mate... i'll let you know what i find anyway....
i'll post a pic up in a sec mate..... Check "my thread" for the pic.....
That turbo looks fine. /Hang on, How can you tell that the turbo in the pictures looks fine?, all you can see is the wastegate,and the exhaust end, no fins or anything, so you cant really say the turbo looks fine!
@dan (starlet3sgte)
QUOTE
it was only when i put the new 3inch side exit exhaust on and decided to hit 1.25bar of boost...
That sounds like when the tubby gave up tbh mate, and also it is a case of unbolting one turbo and putting on the other. If you need a turbo dont hesitate to give me a shout
Jules
Last edited:
Dan3SGTE
Member +
jules, sweet mate
i'll defo let you know if i need one mate and give it a go at changing it... (if need be)
i'll defo let you know if i need one mate
and give it a go at changing it... (if need be)That turbo looks fine. QUOTE]
Hang on, How can you tell that the turbo in the pictures looks fine?, all you can see is the wastegate,and the exhaust end, no fins or anything, so you cant really say the turbo looks fine!
@dan (starlet3sgte) it is a case of unbolting one turbo and putting on the other. If you need a turbo dont hesitate to give me a shout
Jules
Dan3SGTE
Member +
yea, a "pop" then a whirring noise sounds to me like a boost leak..
seems very strange that you say you can't find one! I'd have a good look about i'm 99% sure that'll be it
dave, i cant say i heard a pop to be honest as the exhaust is soo fucking loud its unreal! wouldnt hear a little pop... but yeah, a whirring noise as in wind going through the window and night time... that sort of sound....
Adam_Glanza
Member +
can you not borrow a turbo off sum 1 just to see if its boosting?
WallaceGlanza
Member +
Surely wind going through the window sounds the same whether its night or day!
When a hose pops off you'd certainly hear it, its like your dump valve going off but louder.
When my turbo shat itself it gradually got worse and didn't want to boost, it wasn't instant, so I don't think its the turbo.
I would say you have a boost leak somewhere, my hose to the boost gauge split once and wasn't making boost, obviously, but it wasn't as loud or noticeable as when an intercooler pipe pops off.
I'd just suggest giving every vaccuum hose and intercooler pipe a thorough check in the daylight.
Dan i forgot to say, adam is right you can try a different turbo from us if you would like, saves you forking out if that isnt the problem!
jules
G
gaz_turbo1
Guest
aze_b td05 proper shit itself when compressor wheel nut came off and still would boost to 0.6 bar, and that was fucked, i am pretty sure ur pipe is poped of the wastegate diaphrapm (spl) is fucked, can't see it being turbo at all,
@dan (starlet3sgte)
QUOTE
it was only when i put the new 3inch side exit exhaust on and decided to hit 1.25bar of boost...
That sounds like when the tubby gave up tbh mate, and also it is a case of unbolting one turbo and putting on the other. If you need a turbo dont hesitate to give me a shout
Jules
Although the over boost could be the cause of the problem it makes no sence for it too be the turbo. As the turbo has minimal shaft play and still turns freely and the fins aren't damaged. So that means if the hot side is getting enough pressurised gas going thru it has to produce boost, it is just physics.