Adam Kindness Posted February 18, 2002 Share Posted February 18, 2002 At around 3000rpm a noise pops up... sounds like an airleak or similar Its not the whistling/spining of the turbos! Ive checked to hoses, there on there doesnt 'seem' to be any powerloss... any ideas Quote Link to comment Share on other sites More sharing options...
Alex Posted February 18, 2002 Share Posted February 18, 2002 Faulty BOV or wastegate???? Quote Link to comment Share on other sites More sharing options...
Branners Posted February 18, 2002 Share Posted February 18, 2002 are you still running the stock airbox? JB Quote Link to comment Share on other sites More sharing options...
Adam Kindness Posted February 18, 2002 Author Share Posted February 18, 2002 yes. the whole engine is standard (to look at anyway)..... Is there anyway of easily checking these probs Quote Link to comment Share on other sites More sharing options...
Alex Posted February 18, 2002 Share Posted February 18, 2002 You could, take off the bonnet, strap your self down over the engine bay and get a mate to thrash the car around town???? (Edited by Alex Holdroyd at 5:36 pm on Feb. 18, 2002) Quote Link to comment Share on other sites More sharing options...
Adam Kindness Posted February 19, 2002 Author Share Posted February 19, 2002 another wee note... only happens in gear too Quote Link to comment Share on other sites More sharing options...
Phil Wall Posted February 19, 2002 Share Posted February 19, 2002 Is the noise there as you pass through 3000 or just if you hold revs at 3000? Quote Link to comment Share on other sites More sharing options...
Adam Kindness Posted February 19, 2002 Author Share Posted February 19, 2002 its constant from above (aprox) 3000rpm Quote Link to comment Share on other sites More sharing options...
GavinL Posted February 19, 2002 Share Posted February 19, 2002 is it a UK car ? Quote Link to comment Share on other sites More sharing options...
Adam Kindness Posted February 19, 2002 Author Share Posted February 19, 2002 nope, so not EGR 94 jap import Auto twinturbo Quote Link to comment Share on other sites More sharing options...
Ian C Posted February 19, 2002 Share Posted February 19, 2002 Quote: from Adam Kindness on 12:53 am on Feb. 19, 2002[br]another wee note... only happens in gear too If it's only above 3000rpm and only in gear, and only in 3rd and above, it must be 'engine whilst under load' related. 3000rpm is just when the prespooling of #2 turbo starts, so maybe the EGBV vacuum line is split? You wouldn't notice a power loss from this, but you may notice a more pronounced transition to the second turbo... -Ian Quote Link to comment Share on other sites More sharing options...
Adam Kindness Posted February 19, 2002 Author Share Posted February 19, 2002 its in all gears... dont think id hear it at 3000rpm in 3rd... as you only hear it when the windows are down.... Where's this vacuum pipe located, so i can give a quick check? EGBV - exhaust gas ??? valve (blowoff?) cheers for all the help tho Quote Link to comment Share on other sites More sharing options...
eyefi Posted February 19, 2002 Share Posted February 19, 2002 is it a sort of fluttering sound, sort of like an air leak stopping and starting again very quickly. if it is i have this noise too & i think its the gearbox, im not sure if its a normal sound but im due for an investigation soon (fluid change etc) b4 my warranty expires. i only realy hear this noise when going past walls with windows down. Quote Link to comment Share on other sites More sharing options...
Ian C Posted February 19, 2002 Share Posted February 19, 2002 Quote: from Adam Kindness on 1:32 pm on Feb. 19, 2002[br]its in all gears... dont think id hear it at 3000rpm in 3rd... as you only hear it when the windows are down.... Where's this vacuum pipe located, so i can give a quick check? EGBV - exhaust gas ??? valve (blowoff?) cheers for all the help tho Exhaust Gas Bypass Valve. It's actualtor looks a bit like a wastegate actuator, and it's slung under the #2 turbo. This means it's an absolute arse to get to... At the back of the engine, coming off #2 turbo, you have the induction pipe post-compressor. This has a boxy bit on it with a VSV attached, and that's your Intake Air Control Valve. under that, bolted onto the #2 turbo, is the EGBV. I need a good picture of the engine bay to point it out... Any about? Regarding the noise, you would probably hear it in all gears, dunno where I got the idea that it was only in 3rd upwards... -Ian Quote Link to comment Share on other sites More sharing options...
Adam Kindness Posted February 21, 2002 Author Share Posted February 21, 2002 Still aint none the wiser! I think all the powers still there... cant realy test it in edinburgh city centre! BUT - do you think it'l be wise to give the 1/4 mile sstrip a miss on sunday Quote Link to comment Share on other sites More sharing options...
Adam Kindness Posted February 21, 2002 Author Share Posted February 21, 2002 for engine pics see http://www.csdevelopments.com/supra Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted February 22, 2002 Share Posted February 22, 2002 Adam i can't remember whether you have a boost controller in your car or not. But looking at your engine bay pics, it would look like it's had one in at some point as one of the wastegate\associated VSV hoses has been replaced and has no clip on it. The lack of a clip is not too worrying in itself, although you should replace it at some point, but IMHO you should check around this area and make sure all the plumbing is correct. Now this is not going to be easy, because it is quite a complex system. My best suggestion would be to meet up with another Supra owner and visually compare the systems. The pipe in question is one of the two at the front of the turbo's that goes down through a protective sleeve and to the vsv or possibly direct to the wastegate, can't remember exactly where it goes without looking it up..... I'm not saying this is the source of your noise, but it's worth checking. Quote Link to comment Share on other sites More sharing options...
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