Well, I've had my Z for about a week now and overall am very happy with it. It's got a few squeaks and I'm trying to work out whether these are from the suspension or not because they do twist my melon a bit: they make the car sound a bit old and rickety.

 

Of slightly more concern is the turbo noise I'm getting. When driving I'm getting a distinct hiss / whistle from the RHS as the boost builds up. It's not that loud at all but it is noticeable above engine and road noise. I'd probably not be too worried if it were the same noise from both sides because I've, perhaps naively, assumed that the turbos are mounted one on each side of the engine bay, however the noise does seem to originate from the RHS only.

 

So, any thoughts on this? I'm taking her back to the dealer next Saturday to get a few other issues sorted out, so I'm wondering if perhaps I should draw this to his attention as well.

 

 

Cheers,

Bart

Well, I've had my Z for about a week now and overall am very happy with it. It's got a few squeaks and I'm trying to work out whether these are from the suspension or not because they do twist my melon a bit: they make the car sound a bit old and rickety.

 

Of slightly more concern is the turbo noise I'm getting. When driving I'm getting a distinct hiss / whistle from the RHS as the boost builds up. It's not that loud at all but it is noticeable above engine and road noise. I'd probably not be too worried if it were the same noise from both sides because I've, perhaps naively, assumed that the turbos are mounted one on each side of the engine bay, however the noise does seem to originate from the RHS only.

 

So, any thoughts on this? I'm taking her back to the dealer next Saturday to get a few other issues sorted out, so I'm wondering if perhaps I should draw this to his attention as well.

 

 

Cheers,

Bart

 

iff its a j-spec you should be getting a standed boost of 0.7kg/cm2 or in english money thats around 9.95psi so iff its below this you might have a leak

Hi, thanks znut. Helpfully my boost guage goes from -700 to +700 mmHg (why?!???) but it is a J-spec so I'll do a quick conversion when I work out what the divisions are. Basically I'm normally getting up to around the 3rd division (generally just a smidge under this). I'm going to google for a conversion and see what I come up with.

Cheers,

Bart

0.7? that would be max on the stock boost guage? sure this is to high, thought it was 0.6?

OK, from what I can figure out the third division is at 525 mmHg (10.15 psi), whilst 9.95 psi is 514.6 mmHg, which suggests that the boost pressure is probably OK given what I'm seeing. However, I'm just a bit concerned about the noise because I thought you aren't supposed to be able to hear stock turbos unless (pretty much) you've got the windows down and you're driving through a tunnel. BTW: very useful site: http://www.convert-me.com/en/convert/pressure. Google didn't know how to do it.

Thanks,

Bart

Could be a boost leak, best get somebody to run a check for you or try to find the leak yourself.

Hi Marcus,

Yeah it's a J-Spec conversion to UK, so the boost guage runs from -7 to + 7 x 100. I'm assuming this is the norm, although the fact that oil pressure is measured in kg / m3 is odd -- where's the consistency, eh? Anyway, I think I'll take your advice and get them to check for leaks.

Thanks,

Bart

Hi Marcus,

Yeah it's a J-Spec conversion to UK, so the boost guage runs from -7 to + 7 x 100. I'm assuming this is the norm, although the fact that oil pressure is measured in kg / m3 is odd -- where's the consistency, eh? Anyway, I think I'll take your advice and get them to check for leaks.

Thanks,

Bart

 

no your gauge is right for a j-spec mate,iff it was uk it would read+14 (as in 14psi)

OK that's good to know. Thanks.