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Old 20 Mar 2008, 01:36 AM   #1 (permalink)
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turbo noises

hi guys well finaly got an impreza its a late 96 wrx import and when i went for it there was a slight whilstle when accerating, so i spoke to my mate and he reckons its the turbo going.
but idont it doesnt sound anything like what my celica one did when that was naffed but on tick over there is a slight whisltling noise coming from around the housing and its pretty much there all the time gets louder when acclerating but shuts up when at peak power say around 4000 revs ish.
but everthing is tight and connected no leaks i can find can anybody tell me if this is common or not.
the turbo model is a ihi rhf5 and it picks up at about 3500 4000 at 1.1 bar and then drops to 0.9 at 5k ish and holds that to 7500 from what i can find its normal running, theres no smoke or running problems atall.
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Old 20 Mar 2008, 02:32 PM   #2 (permalink)
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ihi rhf5? not familiar with that one, standard turbo is a TD05.


its very difficult to know from sounds descriptions what its like, might be worth keeping tabs on it and see if it gets any worse, if in a few weeks time no change then prob just the normal noise from the turbo
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Old 20 Mar 2008, 04:54 PM   #3 (permalink)
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yeah i was confused with the model of it when the stock ones where tdo5s appartnly its part of the vf family but im having trouble sourcing one out can only find people to recon it.
but if its goosed then i definatly want the same one dont want to risk losing any pull it has now because its awesome but after about half an hour of fun it starts to hert your neck lol .
love it so much its just everything ive always wanted does everything and to me is perfect in everyway possible also makes a great family car girlfreind loves it baby loves it and comfort is so surprising
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Old 20 Mar 2008, 06:06 PM   #4 (permalink)
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Quote:
Originally Posted by -Ant- View Post
yeah i was confused with the model of it when the stock ones where tdo5s appartnly its part of the vf family
Impreza turbo family.

VF Series turbo. http://www.subaru-impreza.org/bbs/sh...ad.php?t=31090


TD Series turbo. http://www.subaru-impreza.org/bbs/sh...ad.php?t=33199
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Old 20 Mar 2008, 06:12 PM   #5 (permalink)
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engine 2.0L P year 01- RHF5 VF35 part number 14411AA440 model WRX


that the turbo i have so its stock apparntly 96 to 01 it was used
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Old 22 Mar 2008, 12:04 PM   #6 (permalink)
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well been down to dp he said its just because is old said they whine like abit and its not loud so it pretty much oki just keep and eye on it if getd louder then worry but otherwise its ok but the exhaust blowing is making it louder.
but sound motor they said but he reckons its been mapped because its got no boost control other than stock and it running 1.2 bar
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Old 01 Apr 2008, 08:53 AM   #7 (permalink)
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vf35 was not standard on that model, so has been replaced at some point.

they can suffer from compressor surge which can be heard as a sort of scream from the turbo until full boost is available.
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Old 01 Apr 2008, 03:22 PM   #8 (permalink)
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whats comppressor surge.
ok i know now no its not compressor surge its constant and its gettin worse looks as id the turbo is going to die soon

Last edited by -Ant-; 01 Apr 2008 at 03:31 PM.
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