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Possible Boost leak

- - - - - rvr ssg boost leak

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17 replies to this topic

#1
RVR-ED

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Hi guys, recently I replaced the exhaust manifold gasket and turbo gaskets on my RVR as they had massive leaks in them and was down on a lot of power and had LOTS of turbo lag, so I replaced them all and maked sure I torqued all the bolts up correctly and she runs great again no leaks from what I can hear or see. A few weeks after I did this I niticed that under loud and going for it I could hear a high pitch whistl coming forom the engine bay and I was just wondering if that'd be from a leak somewhere or if it's supposed to do that. This might be a really dumb thing to ask but I'd prefer to ask and know than to leave it and never find out. 



#2
jack be nimble

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Build a tester and test it.
Sounds like a leak tho. a pretty bad one if you can hear it when pushing hard
4g93t jumbuck conversion. PRANGED 18/3/12, CHECK MY MEMBER RIDES Page 11. no serious human injuries.
ON THE ENGINE STAND. g4cs 2.4l + Gt35r. PLUS: auto conversion + Awd coming.
thanks for parts and help: BMGTZ, EVOCPE, cwolf, Benozi, Jamo-GSR, 1JUM2NV, RXVII..much appreciated, cheers guys.
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#3
VIN18M

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I've found that when you get a whistle it tends to be an exhaust leak rather than pressure leak in the charge pipes. Check the dump to down pipe gasket if it sounds like it's coming from the engine bay.



#4
evo-gsr

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As above...
Check turbo to exhaust mani too...thats a common one.
[qoute name="BMGTZ" post="331212" timestamp="1467451744"]I don't know anything ...
Trust in the master of taxis.... He will set you straight[/quote]

#5
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I'm just confused as to why it'd be doing it as I replaced all those gaskets about a month ago



#6
evo-gsr

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Hot and them cold tends to make them loosen off...especially if you didnt re torque after a few cycles.
[qoute name="BMGTZ" post="331212" timestamp="1467451744"]I don't know anything ...
Trust in the master of taxis.... He will set you straight[/quote]

#7
White Knight

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Plus one for the bolts from manifold to turbo. I had the same issue.
Although you may have torqued them up, the do require a few heat cycles and re tensioning.
Glad the RVR is going better!

#8
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Ah ok, I'll give re-tensioning them a go. I also took it to 3 of my friends that are mechanics and all of them said that it'll just be the turbo that's whistling...



#9
evo-gsr

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If it still has standard intake and airbox you wont hear whistling. Its an exhaust leak 100%
[qoute name="BMGTZ" post="331212" timestamp="1467451744"]I don't know anything ...
Trust in the master of taxis.... He will set you straight[/quote]

#10
White Knight

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I have a sizable leak from turbo to dump (its a divorced set up), can feel the gasses escaping, with my hands, at idle. I broke a stud when installing the dump and forgot all about it, lol. Gotta get around to drilling and retapping....
I have a slight whistle from changed intake set up but when under high load/boost it whistles rather loud.

#11
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Yeah intakes 100% stock. But it has a evo 3 td05-16g turbo and dump and exhaust manifold and 3" mandrel bent exhaust. I don't know if that makes it whistle at all?

#12
White Knight

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Don't know mate, unless you have decat exhaust and a cone filter you probably still wouldn't hear whistle except for slight spool noose.
I would be checking the exhaust myself.

#13
evo-gsr

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Yeah intakes 100% stock. But it has a evo 3 td05-16g turbo and dump and exhaust manifold and 3" mandrel bent exhaust. I don't know if that makes it whistle at all?


No. Just check all the parts where gaskets are and report back..
[qoute name="BMGTZ" post="331212" timestamp="1467451744"]I don't know anything ...
Trust in the master of taxis.... He will set you straight[/quote]

#14
White Knight

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Hey matey, did you get this sorted as yet? Also worth checking the O2 sensor as well, they can let out a nice whistling noise if not in tight.....

#15
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Unfortunately I haven't been able to yet as I am on holiday up the coast in brisabane but will fix it when I get back.

#16
White Knight

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All good mate, was just curious. Enjoy the break bud.

#17
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Ok, so I couldn't help myself i ended up spending about half an hour while on holiday and with minimal tools to tighten all the exhaust bolts up and low and behold the whistle is gone!! hopefully it stays that way :)



#18
jack be nimble

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A good fix is a easy fix. Nice one
4g93t jumbuck conversion. PRANGED 18/3/12, CHECK MY MEMBER RIDES Page 11. no serious human injuries.
ON THE ENGINE STAND. g4cs 2.4l + Gt35r. PLUS: auto conversion + Awd coming.
thanks for parts and help: BMGTZ, EVOCPE, cwolf, Benozi, Jamo-GSR, 1JUM2NV, RXVII..much appreciated, cheers guys.
Aerodynamics are for people who can't build engines. —Enzo Ferrari
REMEMBER: you cant polish a turd, but you can roll it in glitter.



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