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Location:
Maitland, NSW
Registered:
June 2002
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turbo noise
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Thu, 19 December 2002 08:32
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I have a friend with a 1j motor and it seems to be making a loud excess whistling noise when on boost, to the point where you cant hear the motor roar. Are the turbo's stuffed or has anyone had this problem before. It's a chaser 1j and not a supra 1j if that helps. Standard except for exhaust, 3" Mandrel.
Steve
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Location:
Wollongong
Registered:
May 2002
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Re: turbo noise
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Thu, 19 December 2002 11:08
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My turbos make quite a whine on full boost and I don't think there is anything wrong with them... they've been making the same noise for 30,000km so far.
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I supported Toymods
Location:
Perth WA
Registered:
May 2002
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Re: turbo noise
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Thu, 19 December 2002 11:39
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What air filter (if any) is he running.
When I had a Blitz stainless steel filter the bloody things were loud!
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Location:
Southern Sydney
Registered:
August 2002
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Re: turbo noise
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Thu, 19 December 2002 12:13
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If your not running the standard airbox they make a pretty loud noise.
The airbox acts just like a resonator on your exhaust, so if he is unhappy with the sound then tell him to put one back on. Most tests show they perform better than pod style filters anyway (especially on the 1j).
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Location:
Montrose, VIC
Registered:
May 2002
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Re: turbo noise
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Thu, 19 December 2002 12:40
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Yeah, I tried driving my car round the block with no blow off valve connected, a hole in the floor and no pipe on the front of the turbo, bloody loud! nearly deafened me...
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Location:
Sydney
Registered:
May 2002
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Re: turbo noise
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Thu, 19 December 2002 14:07
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man mine are so loud it genuinly gets freakin anoying...still love them beeing there though  just wait till he raises the boost!!!!!
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Location:
Maitland, NSW
Registered:
June 2002
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Re: turbo noise
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Thu, 19 December 2002 21:45
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Standard air box, and i know the noise that you guys are talking about, but there is something different about this noise.
Maybe dry\worn bearings mor something
Steve
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: turbo noise
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Thu, 19 December 2002 22:39
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 my turbo has a whine when commnig onto boost, and it carries all the way, (but it is more noticeable when comming on to boost)...
but not that loud (as you say your friends is, that would be bloody annoying).....
mine is only a small whine though, i like it..... 
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Location:
ACT
Registered:
December 2002
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Re: turbo noise
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Fri, 20 December 2002 02:32
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The whine should be there while boosting but shouldn't increase while full boost. If the whistling sound is really high pitched and even approaches a screech then that is no good - best to get it checked out in more detail.
Before you do this though just check out all the hoses/connectors/gaskets just make sure there is no air leaks....
Good luck!
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I supported Toymods
Location:
Perth WA
Registered:
May 2002
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Re: turbo noise
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Fri, 20 December 2002 08:35
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Another guess - is it the turbo? Fanbelts etc. can cause that screechy noise
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Location:
Maitland, NSW
Registered:
June 2002
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Re: turbo noise
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Mon, 23 December 2002 04:22
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Yes it is the turbo's, nothing else would be as loud as what the noise is, it nearly blow's ya ear drums apart, im guessing the shaft is rooted,
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Location:
Melbourne
Registered:
July 2002
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 Re: turbo noise
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Tue, 24 December 2002 06:25
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Could be that the impellers are eroded causing the turbos to whine.
This happens when dust gets to the impellers, also happens when the turbos start getting a bit long in the tooth.
Happened to Tony longhurst at bathurst in 1988 when he won bathurst.
Probably not to big a problem though.
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Location:
Canberra
Registered:
May 2002
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Re: turbo noise
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Tue, 24 December 2002 07:10
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As the bearings wear, they allow the shaft to move further and further sideways as the shaft loads up on boost. Eventually they wear enough for the compressor wheel to touch the compressor housing. This has the obvious result of fu(king the compressor wheel & housing from the direct contact whilst spinning at great speed, and will make a screeching noise on boost, far louder than the normal whistle you hear from most turbos. 
Cheers
Phil
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Location:
sydney
Registered:
December 2002
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Re: turbo noise
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Thu, 26 December 2002 13:45
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Check for movement in the shaft of the turbo, could be the thrust bearing. Or it could be an exhaust leak somewhere, my mates car had a small piece of gasket blown out of the manifold and the noise on boost was freakin' loud.
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Location:
Maitland, NSW
Registered:
June 2002
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Re: turbo noise
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Fri, 03 January 2003 04:24
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Thanx everyone for there replies, it gave a goo variation as to what the problem could be, but i think MYT 16V response sound like the problem, i'll post answer as i know
Steve
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Location:
Sydney Australia
Registered:
May 2002
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Re: turbo noise
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Fri, 03 January 2003 06:52
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my turbos made a bit of noise till the other night.. then they made worse noises and no boost  ... got new ones on now though... all better.
My rear turbo touched the housing... kaboom!
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