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Home > Help Needed / General Tech Chat > Grinding noise from drivetrain

theoneeyedlizard

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Essex

14th Jun, 2007 at 10:29:28pm


As the title says really. Latest of a series of bad noises.

It is perfect on idle and only happens when under load. The noise is like a grinding, it reminds me of when one of my driveshafts was not sitting in the CV joint properly.

Diff about to implode maybe?

In the 13's at last!.. Just

BENROSS

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Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

14th Jun, 2007 at 10:45:56pm

could be but my moneys on the drop gears

it will cave in sooner rather than later

the slight modded head i did for you gary will have spured the drive train to destruction

more power as you would have wound the boost up

wil_h

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Betwix Harrogate and York

15th Jun, 2007 at 07:43:10am

Either way, unless you can identify it the engine needs to be out and inspected.

The last thing you want is saomething lunching its self and doing more damage.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph



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the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

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I'm mainly concerned about swirl in the runners caused by the tangential entry.


theoneeyedlizard

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7265 Posts
Member #: 1268
The Boom Boom speaker Police!

Essex

15th Jun, 2007 at 08:04:11am

I have'nt had it back on the rollers yet, as I've had too many problems since. So the boost is still at 10psi. I haven't really driven it much since the head and it's been running extra rich to be on the safe side, so the power is probably less than it has been previously.

In the 13's at last!.. Just

Bat

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Bermingum

15th Jun, 2007 at 08:14:32am

Hi,
Can you give some more details?
Does the noise change when cornering?
Does it make the noise in all the gears?
What was done to drops and box before it went in?
Etc....
Cheers,
Gavin :)

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theoneeyedlizard

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7265 Posts
Member #: 1268
The Boom Boom speaker Police!

Essex

15th Jun, 2007 at 09:16:52am

I have driven it again this morning and it only seems to do it when pulling away at low revs 1100-1700rpm.

Not sure if it's grinding or more of a vibration.

In the 13's at last!.. Just

Bat

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Bermingum

15th Jun, 2007 at 09:38:47am

Hi,
Is the clutch fully out when you get the vibration/noise?
Cheers,
Gavin :)

VEMs Authorised Installer / Re-seller. K head kits now available!

WB/EGT gauges. Click here for customers write-up

Visit www.doyouneedabrain.co.uk

My Mini build diary


theoneeyedlizard

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7265 Posts
Member #: 1268
The Boom Boom speaker Police!

Essex

15th Jun, 2007 at 10:53:45am

I'll have a listen at lunchtime. Than ks Bat

In the 13's at last!.. Just

Vegard

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Norway

15th Jun, 2007 at 11:50:29am

Rip it to pieces. Why all this guessing? Dismantle and repair!

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.

theoneeyedlizard

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7265 Posts
Member #: 1268
The Boom Boom speaker Police!

Essex

15th Jun, 2007 at 12:57:27pm

lol Vegard!

Surely it's better to diagnose/isolate the problem first? It might just be a clutch or CV problem?

In the 13's at last!.. Just

BENROSS

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Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

15th Jun, 2007 at 03:54:01pm

vegard is straight in there, you dont mess about V

Edited by BENROSS on 15th Jun, 2007.





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