Suspension/engine Noises

[ironpaw]

So I've had the car for a few days and everything's pretty good but I did notice a few things:

Suspension creaking noises - I was told by the seller (who was told by Andy I think) that due to the "alloy bushes"? used in the M35 the suspension will creak a little when 1st driven?

Turbo noise - didn't get any of this on my way back from Sydney, but now I notice SOMETIMES (maybe 50%) when I hit boost, I get a "rubbing" noise - imagine driving over the rumble strips on the Hume, now speed it up x2. Sounds just like that...

Is something about to die?

[ironpaw]

hmm anyone? I've been trying to stay off boost for today...grandma'ing the car lol

[scotty nm35]

If the bearings are on the way out theres nothing you can do about it, highflow time. I would say most Japanese owners would be getting rid of these before the 100,000k turbo replacement or when noises start.

[ironpaw]

If the bearings are on the way out theres nothing you can do about it, highflow time. I would say most Japanese owners would be getting rid of these before the 100,000k turbo replacement or when noises start.

So the rubbing noise = bearing failing?

I would think it would sound more...metallic/high pitched?

[scotty nm35]

So the rubbing noise = bearing failing?

I would think it would sound more...metallic/high pitched?

The bearings hold the wheels in place, when they wear, the compressor wheel sometimes starts to rub on the front housing causing damage. If the rear bearing wears, the ceramic turbine blades shatter.

What sort of rubbing noise are we talking about? Sounds like what Cams car used to do when the manifold was leaking too, farting...

[ironpaw]

The bearings hold the wheels in place, when they wear, the compressor wheel sometimes starts to rub on the front housing causing damage. If the rear bearing wears, the ceramic turbine blades shatter.

What sort of rubbing noise are we talking about? Sounds like what Cams car used to do when the manifold was leaking too, farting...

Sounds like when you drive over the rumble strip on the left lane on a highway...speed it up x 2 and you have it.

Does remind me of a very low sounding fart...

I might just have to come around and show you

[scotty nm35]

Sounds like when you drive over the rumble strip on the left lane on a highway...speed it up x 2 and you have it.

Does remind me of a very low sounding fart...

I might just have to come around and show you

Could just be the manifold to turbo bolts then, dump has to come off to get to them...

[iamhe77]

Sounds like when you drive over the rumble strip on the left lane on a highway...speed it up x 2 and you have it.

Does remind me of a very low sounding fart...

I might just have to come around and show you

Sound is probably caused by the turbo not getting enough air.

I had that exact same sound prior to opening up the intake.

1. make sure you have a high flowing panel filter in your airbox

2. if it still makes the noise, get Scott to make you up a suction pipe LIKE MINE

Edited November 15, 2010 by iamhe77

[ironpaw]

Cheers...

What brand filter should I get? K&N? And where from?

[zei20l]

get a dry one, i rekon the oiled ones are a bit iffy and MIGHT affect performance by leaving oil deposits on the AFM

[ironpaw]

get a dry one, i rekon the oiled ones are a bit iffy and MIGHT affect performance by leaving oil deposits on the AFM

Is the stock filter supposed to be pink?

What are some brands/model that you recommend?

[zei20l]

I use a Blitz, its blue

Nismo is red AFAIK

ummm anything that will fit will work! its a fairly common size

[iamhe77]

get a dry one, i rekon the oiled ones are a bit iffy and MIGHT affect performance by leaving oil deposits on the AFM

+1 on getting a dry filter although the oiled ones will only bugger up the AFM if they are over oiled.

I have been using an Amsoil EaA filter (as per the G35 Infinity) for a few years now, no probs with it at all

Was quite a reasonable price (much cheaper than K&N etc) from these guys

Good flow, good filtration, good price

Edited November 15, 2010 by iamhe77

[ironpaw]

+1 on getting a dry filter although the oiled ones will only bugger up the AFM if they are over oiled.

I have been using an Amsoil EaA filter (as per the G35 Infinity) for a few years now, no probs with it at all

Was quite a reasonable price (much cheaper than K&N etc) from these guys

Good flow, good filtration, good price

Couldn't find air filters on their site?

found these: http://www.nengun.com/nismo/s-tune-sports-air-filter

Which is the correct part number? And How long do they last?

The K&N ones supposedly last 50k km???

[dimi108]

That "rubbing" noise is the blow off valve.

It's almost like a brrrrruuuu as you slowly let your foot off the pedal during full boost, isn't it?

It's quite common.

You can fix this by blocking the blow off valve off or replacing it with a different one.

[scotty nm35]

That "rubbing" noise is the blow off valve.

It's almost like a brrrrruuuu as you slowly let your foot off the pedal during full boost, isn't it?

It's quite common.

You can fix this by blocking the blow off valve off or replacing it with a different one.

I don't suggest it, mine holds 22 psi just fine. I drove Aarons with an aftermarket bov and wasn't impressed. Sorry Aaron.

[dimi108]

That fart sound from the stock blow off valve is embarassing. Especially if you've got chicks in the car

From outside they look at the car and it looks like it's new but little do they know when you boost a bit, it poos in it's pants.

[PN-Mad]

I don't suggest it, mine holds 22 psi just fine. I drove Aarons with an aftermarket bov and wasn't impressed. Sorry Aaron.

PSSHHHTTT...... Hektic!

Re fart noise- Sounds like +1 for having a NA car. Chicks don't think you had a bad Curry the night before .....

[ironpaw]

That "rubbing" noise is the blow off valve.

It's almost like a brrrrruuuu as you slowly let your foot off the pedal during full boost, isn't it?

It's quite common.

You can fix this by blocking the blow off valve off or replacing it with a different one.

So will this issue damage the turbo/engine if I don't fix it soon?

I don't want to get any BOV which makes stupid "pffffffeeeeeeeeeeeew" noises.

Hunt around for a stock one I guess?

[dimi108]

No it won't ruin the turbo.

Up to you though, wether you prefer a "chhhhh" or a *fart* sound

Nah, but seriously, you can just buy a universal silent bov if it really bothers you.