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Chat Area => General Car Chat => Topic started by: TheBoy on 22 September 2012, 13:28:30

Title: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 13:28:30
Driver
(http://i14.photobucket.com/albums/a319/IamTheBoy/4CE9513E-4982-43AA-921D-0EA02398DC1D-28346-00000FAC211A5474_zps0346ddd8.jpg)

Pass
(http://i14.photobucket.com/albums/a319/IamTheBoy/3AE7F1D7-957E-4AAE-8B04-709D13C7CD0F-28346-00000FAC376C07B8_zps8f457202.jpg)

Sent from my iPhone
Title: Re: Silver Bullet rear doughnuts
Post by: feeutfo on 22 September 2012, 13:41:43
Gap is too narrow on drivers. Might be the bush failed, collapsed, allowing sub frame arm to drop nearer the triangular plate. Hence gap is narrower.

As the drivers side also sits low, check spring first. If ok the plate needs to come off for a butchers. Jack on the subframe arm and it shouldn't move from the chassis.
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 14:39:54
Gap is too narrow on drivers. Might be the bush failed, collapsed, allowing sub frame arm to drop nearer the triangular plate. Hence gap is narrower.

As the drivers side also sits low, check spring first. If ok the plate needs to come off for a butchers. Jack on the subframe arm and it shouldn't move from the chassis.
Think tthats the way its jacked? Only drivers side jacked
Title: Re: Silver Bullet rear doughnuts
Post by: feeutfo on 22 September 2012, 14:46:25
Lazy arse. ;D jack both sides. ;)

...but I don't think it is, iirc that's how it was parked up, going by feel.
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 14:58:23
If I remove plate, how much trouble am I in if it moves? Thinking about the hassle we had before...
Title: Re: Silver Bullet rear doughnuts
Post by: feeutfo on 22 September 2012, 15:12:21
If it moves you'll need a hand, but if you place the jack on the four holes in the subframe arm it won't.

Jack both sides to check the gap, (or let the jacked side down) so the car sits evenly.

But if removing the plate only jack one side. Saddle on the four holes of subframe arm.
Then loosen The centre (18?) bolt. If it spins freely, remove all the bolts and the plate. If the bolt us nipped, don't remove the plate.
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 15:30:08
Unjacked, and rear bounced to settle.

Drivers:
(http://theboy.omegaowners.com/oofpics/MV6_rear_doughnuts/IMG_6939.JPG)

Passenger:
(http://theboy.omegaowners.com/oofpics/MV6_rear_doughnuts/IMG_6940.JPG)


Both sides, I can get index and middle finger in between plate and arm, with a bit of wiggle room.
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 15:30:46
First time I've seen the pics, drivers does look lower?
Title: Re: Silver Bullet rear doughnuts
Post by: feeutfo on 22 September 2012, 16:02:24
Yep...

Checked spring?
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 16:26:06
Yep...

Checked spring?
You did when you noticed bush :P
Title: Re: Silver Bullet rear doughnuts
Post by: omega3000 on 22 September 2012, 16:57:54
Needs some waxoil on those metal bits  ;)
Title: Re: Silver Bullet rear doughnuts
Post by: feeutfo on 22 September 2012, 17:31:27
Yep...

Checked spring?
You did when you noticed bush :P
bush breaked then
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 18:25:30
Bush with triangle plate removed...

(http://theboy.omegaowners.com/oofpics/MV6_rear_doughnuts/IMG_6941.JPG)
(High Res version (http://theboy.omegaowners.com/oofpics/MV6_rear_doughnuts/hires/IMG_6941.JPG))

(http://theboy.omegaowners.com/oofpics/MV6_rear_doughnuts/IMG_6942.JPG)
(High Res version (http://theboy.omegaowners.com/oofpics/MV6_rear_doughnuts/hires/IMG_6942.JPG))

(http://theboy.omegaowners.com/oofpics/MV6_rear_doughnuts/IMG_6943.JPG)
(High Res version (http://theboy.omegaowners.com/oofpics/MV6_rear_doughnuts/hires/IMG_6943.JPG))

Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 18:28:13
Thats not a tear, BTW, its just clean. Presumably where it compresses when under load?

Title: Re: Silver Bullet rear doughnuts
Post by: 05omegav6 on 22 September 2012, 18:38:02
With a lever in them, how much do they move? That compression rub could be a sign that the top is already split :-\ it is an assumption that these only fail from underneath.
Title: Re: Silver Bullet rear doughnuts
Post by: feeutfo on 22 September 2012, 18:40:55
That's not right, the bump stops shouldn't be rubbing like that. And you can see by the crease marks where it's been hanging down around the centre spacer.

Wonder if;

The bush will be split when viewed from the back (needs to be removed to see)
Sumats bent. (Not likely)
We should remove the springs and see if they are equal length (again)

Can't think what else would force or allow that side of the sub frame to drop so much.
Title: Re: Silver Bullet rear doughnuts
Post by: feeutfo on 22 September 2012, 18:42:03
Makes mental note to check mine, as i have them Febi ones too.
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 18:44:18
With a lever in them, how much do they move? That compression rub could be a sign that the top is already split :-\ it is an assumption that these only fail from underneath.
Very easy towards voids, less so towards filled areas.

Compared to brand new lemforder in garage, not as stiff, but hard to confirm, as can't hold it firm enough...

...not sure how old the Febi's are, either last summer or summer before
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 18:46:57
That's not right, the bump stops shouldn't be rubbing like that. And you can see by the crease marks where it's been hanging down around the centre spacer.

Wonder if;

The bush will be split when viewed from the back (needs to be removed to see)
Sumats bent. (Not likely)
We should remove the springs and see if they are equal length (again)

Can't think what else would force or allow that side of the sub frame to drop so much.
This was the side that ragged you off made you quite cross, IIRC?
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 18:47:27
Although it was alignment of it, not the bush going in, wasn't it?
Title: Re: Silver Bullet rear doughnuts
Post by: feeutfo on 22 September 2012, 18:54:26
Although it was alignment of it, not the bush going in, wasn't it?
Yes we had trouble getting the bolts back in/alignment issues. Bush whent in ok, and it's still in, by the pics.

I reckon fit poly anyway...;)
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 19:00:14
2yrs...

http://www.omegaowners.com/forum/index.php?topic=41367.0
Title: Re: Silver Bullet rear doughnuts
Post by: TheBoy on 22 September 2012, 19:03:08
Yes we had trouble getting the bolts back in/alignment issues
Reckon something is bent, given the troubles I had earlier (not posted about though), and troubles you had fitting them?
Title: Re: Silver Bullet rear doughnuts
Post by: 05omegav6 on 22 September 2012, 19:06:28
Fwiw, my nearside centre bolt was a complete shit to refit  >:( had to tighten the plate up and literally drive the arm forward :-\ took 3 none to delicate attempts...

Wonder if the subframe twists over time due to the torque being put through it :-\
Title: Re: Silver Bullet rear doughnuts
Post by: feeutfo on 22 September 2012, 19:09:53
Hell of a job to bend a subframe. And given the mounting points in a triangular shape(two by the dif, one in The end of each arm) if it was bent I can't see how that would force the arm down to over come the bush.

When jacking on the subframe arm, did the subframe rise up to the correct position...?
Title: Re: Silver Bullet rear doughnuts
Post by: 05omegav6 on 22 September 2012, 19:12:44
No :-\ but hand brake ineffective on that side, so arm was able to move forward and backwards rather than pivoting around the wheel radius :-\ just to add, it has been rear ended twice.
Title: Re: Silver Bullet rear doughnuts
Post by: feeutfo on 22 September 2012, 19:15:20
No :-\ but hand brake ineffective on that side, so arm was able to move forward and backwards rather than pivoting around the wheel radius :-\ just to add, it has been rear ended twice.
estates are always a pita IME. ;)