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///Mister_G View Drop Down
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Points: 343 		Direct Link To This Post Topic: The growl of an angry beast
    Posted: 08-August-2005 at 05:24

Sometimes upon starting the engine, ignition is accompanied by a strange noise which lasts for around 2 - 3 seconds.

Imagine if you will (it might take a good deal of imagination and fantastic onomatopoeia):

Click, WWwrrrrroooooommmmm...mmmmm grrruuurrruuuurrrrrr......mmmmmmmmm 

I would opine that it doesn't sound abrasive or like anything grinding, does anyone have any ideas?

Sorry about the stupidity of my description.

 

 



Edited by ///Mister_G
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Points: 383 		Direct Link To This Post Posted: 08-August-2005 at 05:48
mine does it too... presume its the same noise given your discription,  thought it may of been a heat sheild resonating but it only does it up on startup only the odd time same as yours...
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Points: 343 		Direct Link To This Post Posted: 08-August-2005 at 05:52

Ha ha ha.... can't have been that bad of a description then!

What do you drive UJ? I thought it might be a belt or chain which needed tightening but i don't hear it at any other time.
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Points: 795 		Direct Link To This Post Posted: 08-August-2005 at 06:23
Probably the fuel pump priming. Get a friend to put their head under the rear of the car to clarify.

Steve
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Points: 383 		Direct Link To This Post Posted: 08-August-2005 at 06:23

description was pretty much spot compared to the noise im getting

havea red 94 3.0 coupe, i think if it was a chain it would be more of a rattley noise and you'd (we'd) prob get it when turning off the engine as well, it's been like that on mine more or less since i got it, thats been about 6000 miles... (mines just creeping up to the 100.000 mark) had it checked over not long ago including rolling road and everything seems fine..
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Points: 3625 		Direct Link To This Post Posted: 08-August-2005 at 06:29
I sometimes get a similar noise on cold start-up (E34 M5) and was told there's some sort of vacuum pump that does it anf that it's normal - my last M5 did it too. It'd be nice to know exactly what it is though.
The world is a tragedy to those who feel, but a comedy to those who think.
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Points: 343 		Direct Link To This Post Posted: 08-August-2005 at 06:30

Thanks for that, I'll sleep a lot happier now. I can believe it is a pump or vacuum for the fuel, I suppose it would make sense.

Mne is a 95 3.0 with 93k. Did you have yours dyno'd?



Edited by ///Mister_G
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Points: 383 		Direct Link To This Post Posted: 08-August-2005 at 06:48

its standard apart froma K&N panel filter and got..

288.6 BHP

245.1 BHP @ The Wheels

259.3 ib ft of torque

very happy with it, wasn't expecting that much torque though.. you ever has yours on the rollers?

 
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Points: 343 		Direct Link To This Post Posted: 08-August-2005 at 07:03

 Flipping 'eck! That's not too bad for a 10yr old motor! Is it chipped? Where has all the torque come from? You are up 20 lb/ft on the  standard figures!?!?!?!

I've had mine since the start of June but haven't had it dyno'd yet. It is mildly chipped with a rather obnoxious exhaust so I'm keen to see what it is putting out.
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Points: 383 		Direct Link To This Post Posted: 08-August-2005 at 07:29

yeah i know!!!not chipped as far as i know, have all history from new and theres no mention of one, couldn't belive the torque, operator said it was very high as well and he's seen a  good few of them on his rollers but said the 3.0 always put down good power.. Have you still got you cat's in your exhaust, meant to see a good increase with those gone, mine will be junked when funds allow ( aiming for 300 bhp)... you planning to put yours on the dyno soon?
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Points: 36 		Direct Link To This Post Posted: 08-August-2005 at 07:40

Thats a lot of torque for an unchipped motor.

My 3.0 went to dastek for a unichip and is now producing 255 ib/ft of torque and 310 bhp.  It wasn't too pricey either.
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Points: 343 		Direct Link To This Post Posted: 08-August-2005 at 07:48

Holy moly, where did you get your chip fitted Biffa? 310bhp out of the 3.0 is pretty damn good.

Not that I know for sure, but there was mention of the 'front cat' being removed. Don't know if that's true or worth mentioning.... I will have it on a dyno but I've got to contend with an inspecI soon.
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Points: 36 		Direct Link To This Post Posted: 08-August-2005 at 07:58

Got it done by Dastek (www.dastek.co.uk).  They have agents all over the country.

The car is standard other than that.  I think the cats have started to leak a bit, so I might get a free flow exhaust and free up a couple more horses.
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Points: 383 		Direct Link To This Post Posted: 08-August-2005 at 08:28

310 is huge power for a 3.0...Thumbs Up

mister g removing the cats is meant to be the way to 300bhp.. and with the chip you should get well above standard..
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Points: 343 		Direct Link To This Post Posted: 08-August-2005 at 08:48

It's hard to say really. I drove 5 evos prior to finding the 3.0 and they all felt weak and loose compared to the one I ended up buying.

I haven't driven another 3.0 as direct comparison but I surprised a bloke in his new boxster s yesterday.........

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Points: 36 		Direct Link To This Post Posted: 08-August-2005 at 09:27

I think the 3.0L feels faster tha the evo, but thats always subjective.  I've a friend with an old 911 turbo and the M3 is just as quick, and doesn't try to kill you on the corners!

Tell you what I'm surprised at though.  My wife has a 330d and above 50 its hard to loose it.  It seems to have bucket loads of torque.  Still an oil burner though!
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Points: 383 		Direct Link To This Post Posted: 08-August-2005 at 09:28

would of liken to see his face

 
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///Mister_G View Drop Down
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Points: 343 		Direct Link To This Post Posted: 08-August-2005 at 09:34
The shades hid his embarassment.....
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Points: 808 		Direct Link To This Post Posted: 08-August-2005 at 17:25
Originally posted by Derek M5 Derek M5 wrote:

I sometimes get a similar noise on cold start-up (E34 M5) and was told there's some sort of vacuum pump that does it anf that it's normal - my last M5 did it too. It'd be nice to know exactly what it is though.
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Points: 808 		Direct Link To This Post Posted: 08-August-2005 at 17:30

Get the same noise on e34 m5 this could turn into the urban myth category, but I soke to a chap that was selling one said that it had two air boxes??? a smaller one for cold starts. If I drive for half a mile it stops and reverts back to the deep notes  
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