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Omega Help Area => Omega General Help => Topic started by: Martin_1962 on 19 April 2010, 07:51:11

Title: V6 big end shells - how much work?
Post by: Martin_1962 on 19 April 2010, 07:51:11
This funny noise my car has, if it is as above, how much work to fix?

Thanks

Martin
Title: Re: V6 big end shells - how much work?
Post by: Andy B on 19 April 2010, 07:57:49
Quote
This funny noise my car has, if it is as above, how much work to fix?

Thanks

Martin

Mr Haynes suggests the conrods can be reomoved with the engine in situ ......  :-/  :-/  :-/  :-/ never done or seen it done though.  :-/
Title: Re: V6 big end shells - how much work?
Post by: Martin_1962 on 19 April 2010, 08:02:10
AFIAC the conrods can stay if - if the shells can be changed - if the noise is bottom end that is
Title: Re: V6 big end shells - how much work?
Post by: Andy B on 19 April 2010, 08:08:50
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AFIAC the conrods can stay if - if the shells can be changed - if the noise is bottom end that is

That's what I meant, if you can remove conrods, they have to unbolted so that'd mean shells could be changed.
What makes you think the bearings are shot?  :-/
Title: Re: V6 big end shells - how much work?
Post by: Marks DTM Calib on 19 April 2010, 08:30:24
Support engine from above, sumps off, baffle out, pickup off.....and away you go
Title: Re: V6 big end shells - how much work?
Post by: Andy B on 19 April 2010, 08:31:33
Quote
Support engine from above, sumps off, baffle out, pickup off.....and away you go

You mean the main ally sump?
Title: Re: V6 big end shells - how much work?
Post by: TheBoy on 19 April 2010, 08:31:53
Quote
Support engine from above, sumps off, baffle out, pickup off.....and away you go
You were looking forward to doing that on mine - is that why you knew :P
Title: Re: V6 big end shells - how much work?
Post by: Martin_1962 on 19 April 2010, 09:01:33
Aghhhh!

Quiet all the way to work.

Stuck in R and it started.

Parked up still going.

Lifted the bonnet and the mechanics over the road had a listen under bonnet.

That sounds fine - no knocking noise ::) ::) ::) ::)
Title: Re: V6 big end shells - how much work?
Post by: Kevin Wood on 19 April 2010, 09:57:34
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Stuck in R and it started.

Maybe it's a transmission issue?

Kevin
Title: Re: V6 big end shells - how much work?
Post by: Entwood on 19 April 2010, 10:02:12
If its a knocking in drive .. perhaps its the rubber bushes for the drive shaft allowing too much movement ??
Title: Re: V6 big end shells - how much work?
Post by: TheBoy on 19 April 2010, 10:05:27
Its not the iron vibrating on that ironing board someone has bolted to the boot is it?
Title: Re: V6 big end shells - how much work?
Post by: Kevin Wood on 19 April 2010, 10:16:06
Really doesn't sound like big ends to me if the noise is coming and going. Would expect big end noise to be based on load, and always there, or at least there once the oil is hot.

Worth checking the torque converter to driveplate bolts are tight, and all present?

Kevin
Title: Re: V6 big end shells - how much work?
Post by: TheBoy on 19 April 2010, 10:17:00
Quote
Really doesn't sound like big ends to me if the noise is coming and going. Would expect big end noise to be based on load, and always there, or at least there once the oil is hot.

Worth checking the torque converter to driveplate bolts are tight, and all present?

Kevin
Stop scaring me :o
Title: Re: V6 big end shells - how much work?
Post by: Martin_1962 on 19 April 2010, 10:48:59
It is hot when noisy and not under the bonnet, almost like something was hitting the body.

Does it when stationary as well.

Might record it later
Title: Re: V6 big end shells - how much work?
Post by: Entwood on 19 April 2010, 10:51:34
Is the engine moving at all ?? could be a worn engine mount ??

Loose exhaust bracket/hanger ??

Engines tend to "rock" more at idle than at higher RPM ... if something is slightly loose it could cause contact ?????
Title: Re: V6 big end shells - how much work?
Post by: Kevin Wood on 19 April 2010, 10:54:22
Don't discount a knackered ancillary too. Does it do it with aux. belt removed?

Is the starter motor (and all other ancillaries) mounted securely and not working loose?

Kevin
Title: Re: V6 big end shells - how much work?
Post by: cem_devecioglu on 19 April 2010, 12:22:17
I have  recently changed the engine mounts and still I can feel the play with some lever (though not easy to position ) ..

check them..
Title: Re: V6 big end shells - how much work?
Post by: 2woody on 19 April 2010, 17:45:28
getting back to the "exam question" - you also have to drop the front crossmember.

not actually all that difficult a job.
Title: Re: V6 big end shells - how much work?
Post by: Marks DTM Calib on 19 April 2010, 19:10:11
Quote
getting back to the "exam question" - you also have to drop the front crossmember.

not actually all that difficult a job.

Why?

Subframe I can understand but, the front cross member?
Title: Re: V6 big end shells - how much work?
Post by: brett wood on 19 April 2010, 19:29:37
might sound daft but ive had a knocing noise on mine turns out its the end of the aircon pump worth a look
Title: Re: V6 big end shells - how much work?
Post by: Martin_1962 on 19 April 2010, 20:58:48
I'm going to wait and see, if they need changing I am not sure what to do, as I go off on holiday before too long.
Title: Re: V6 big end shells - how much work?
Post by: Martin_1962 on 19 April 2010, 21:00:52
Quote
might sound daft but ive had a knocing noise on mine turns out its the end of the aircon pump worth a look

Mine is idle only when been running for at least 15 minutes and cannot hear under bonnet
Title: Re: V6 big end shells - how much work?
Post by: Martin_1962 on 19 April 2010, 21:21:54
I am going to just see what happens I might need a JV6 or DLK as I don't have long until I disappear, and I have to get the caravan sorted first.

It does sound really worrying though - I will record it tomorrow and upload.

Aux belt off engine needs to be hot and it is difficult to get the belt off with plenum on.
Title: Re: V6 big end shells - how much work?
Post by: Martin_1962 on 19 April 2010, 21:40:09
Aircon pump would not be too bad.

At traffic lights it did it up to about 2000 rpm when engine noise meant I couldn't hear it.

Under load, no noise, road noise covers it as well.

It first happened after trying to work out why the 0305 was happening, I drove at 6500rpm in first for about 20 seconds with little load, would that have caused any issues?
Title: Re: V6 big end shells - how much work?
Post by: Kevin Wood on 20 April 2010, 09:25:21
Quote
Aux belt off engine needs to be hot and it is difficult to get the belt off with plenum on.

I got TheBoy's aux belt off and back on again with plenum and multirams in place. :y

It must be worth a try just to eliminate the ancillaries, surely?

No problem with it being hot. You only have to run it for 30 seconds and not under load. It'd almost cool by convection.

Kevin
Title: Re: V6 big end shells - how much work?
Post by: Andy B on 20 April 2010, 09:31:26
Quote
....
I got TheBoy's aux belt off and back on again with plenum and multirams in place. :y .....

I recently managed to remove mine with everything in place. But had to admit defeat putting the new one on, I ended up with a cat's cradle of fan belt, & took the bag pipes off before I blew a gasket.  ;D
Title: Re: V6 big end shells - how much work?
Post by: Kevin Wood on 20 April 2010, 09:44:35
Quote
Quote
....
I got TheBoy's aux belt off and back on again with plenum and multirams in place. :y .....

I recently managed to remove mine with everything in place. But had to admit defeat putting the new one on, I ended up with a cat's cradle of fan belt, & took the bag pipes off before I blew a gasket.  ;D

Admittedly it's easier if you're putting the same one back on.  ;D

Kevin
Title: Re: V6 big end shells - how much work?
Post by: Andy B on 20 April 2010, 09:48:40
Quote
Quote
Quote
....
I got TheBoy's aux belt off and back on again with plenum and multirams in place. :y .....

I recently managed to remove mine with everything in place. But had to admit defeat putting the new one on, I ended up with a cat's cradle of fan belt, & took the bag pipes off before I blew a gasket.  ;D

Admittedly it's easier if you're putting the same one back on.  ;D

Kevin
Ah! That's easy  ;D. I thought you meant removing to replace the belt.   :y
Title: Re: V6 big end shells - how much work?
Post by: 2woody on 20 April 2010, 11:53:31
Quote
Quote
getting back to the "exam question" - you also have to drop the front crossmember.

not actually all that difficult a job.

Why?

Subframe I can understand but, the front cross member?

we mean the same thing. The frame underneath that the engine mounts and the wishbones bolt to. The thing the Yanks call the K-member.
Title: Re: V6 big end shells - how much work?
Post by: TheBoy on 20 April 2010, 18:43:07
Piston slap due to overfuelling?
Title: Re: V6 big end shells - how much work?
Post by: feeutfo on 20 April 2010, 19:34:23
Quote
Quote
Quote
Quote
....
I got TheBoy's aux belt off and back on again with plenum and multirams in place. :y .....

I recently managed to remove mine with everything in place. But had to admit defeat putting the new one on, I ended up with a cat's cradle of fan belt, & took the bag pipes off before I blew a gasket.  ;D

Admittedly it's easier if you're putting the same one back on.  ;D

Kevin
Ah! That's easy  ;D. I thought you meant removing to replace the belt.   :y
tis indeed easy, re greased my tensioner pulley, removed nothing bar the belt and pulley itself.
Title: Re: V6 big end shells - how much work?
Post by: Martin_1962 on 20 April 2010, 23:35:41
Not borewash, is intermittant, so not big ends, possibly a lifter
Title: Re: V6 big end shells - how much work?
Post by: Kevin Wood on 21 April 2010, 11:07:03
Quote
Not borewash, is intermittant, so not big ends, possibly a lifter

A lifter would be very obvious from under the bonnet though.  :-/

Kevin
Title: Re: V6 big end shells - how much work?
Post by: Martin_1962 on 21 April 2010, 14:51:49
Had a little just after startup then quiet, nothing else

Changed the tensioner pulley today, so will what happens on the way home
Title: Re: V6 big end shells - how much work?
Post by: Mr Skrunts on 21 April 2010, 22:12:46
Hello, is there a doctor in the house.

(http://i278.photobucket.com/albums/kk106/skruntie/0%20-%20Bits%20-%20001/mechanics-stethoscope-automotive-en.jpg)
Title: Re: V6 big end shells - how much work?
Post by: cem_devecioglu on 21 April 2010, 22:26:09
Quote
Hello, is there a doctor in the house.

(http://i278.photobucket.com/albums/kk106/skruntie/0%20-%20Bits%20-%20001/mechanics-stethoscope-automotive-en.jpg)

yep..mechanics use that one :y
Title: Re: V6 big end shells - how much work?
Post by: Vamps on 21 April 2010, 22:42:13
Big ends have a noise of their own, you can tell, that low rumbling noise. In my experience they go just has you hit the red-line when in 4th gear with overdrive on, that was in a Humber Sceptre many years ago, easy to fix though..... :y
iirc Triumph Spitfires were an easy engine to knock them out on...... :D :D :D
I have never heard of a modern car needing the big ends doing... ::) ::) ::)

Hope you get it sorted before you need to tow your caravan..... :y
Title: Re: V6 big end shells - how much work?
Post by: Martin_1962 on 21 April 2010, 23:19:07
Was quiet on hte way home tonight :-? :-?