15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHChanging rear coffin arms and tuning forks
Reported or suspected cause
top nut
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
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Discussions that report identifying a cause
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Reported cause · Original poster
It was the top nut on the tuning fork that was the issue rather than the coffin arms.
Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
On the bright side, I recently replaced some parts of the front suspension on my car and because when I had first taken apart and reassembled that end about six years ago I had used copper grease, it all came undone without any fuss.
Leading evidence: 'top nut' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'top nut' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace some parts of the front suspension' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
On the bright side, I recently replaced some parts of the front suspension on my car and because when I had first taken apart and reassembled that end about six years ago I had used copper grease, it all came undone without any fuss.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
On the bright side, I recently replaced some parts of the front suspension on my car and because when I had first taken apart and reassembled that end about six years ago I had used copper grease, it all came undone without any fuss.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that suspect a cause
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Suspected cause · Original poster
Think my spanner access issue was due to having the axle stands on the subframe.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion · Original poster
I then set about the rear coffin arms and tuning forks but have drawn a blank.
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Replace some parts of the front suspension
No successful repair reported for this finding.
0
Reported fixes
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Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
On the bright side, I recently replaced some parts of the front suspension on my car and because when I had first taken apart and reassembled that end about six years ago I had used copper grease, it all came undone without any fuss.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
On the bright side, I recently replaced some parts of the front suspension on my car and because when I had first taken apart and reassembled that end about six years ago I had used copper grease, it all came undone without any fuss.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
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Hi all. So far recently I've changed the front coffin arms and the tuning forks and the engine mounts. I then set about the rear coffin arms and tuning forks but have drawn a blank. I think I need to mark up the eccentric bolts on the coffin arms and wonder what the best way to do this is?
For the tuning forks there is a top bolt to enable you to undo the ball joint end but it's impossible to get any sort of spanner in there to hold it so does anyone know how I go about doing them too? Thanks in advance
You can get an open ended spanner in there. For the others just take a photo and unbolt it all. You will be getting the geometry done afterwards anyway. Good luck getting the eccentric bolts out.
MC
You will be cutting the eccentrics off, get a one of those hacksaw blade holders and a a pile of good blades.
Just mark the approx position and get it aligned afterwards at a garage.
The ball joint ends will be stuck in the hub carrier so don't worry about it just undo them and use a splitter.
Sometimes the steel insert from the hub carrier comes with it
Did you do the front inner and outer track rods too? Also front top mounts may need doing. Then you will have all new. Also front gearbox mount makes a difference, but wait till you drop the box for that.
Thanks. I did the inner track rods as the outers seemed fine. No top mounts yet either as prices for the carrera 4!
Mistercorn I tried with an open ended spanner but the gap wasn't big enough but must admit I didn't try too hard as I was thinking how will I get the bolt back in the bottom and line up with this nut in a tiny gap and even worse it it moves? Or is it locked in position so that's not a concern.
I'm still hoping I will be lucky with the eccentric bolts and don't need to cut them out as I have seen some posts on here that show the pain with the hack saw! Might get a resiprocating saw if I need to do that!
It's a 21mm for the top of the tuning fork. I've just done mine. You should be able to get the spanner down the gap so it is in line with the car and hold the top whilst undoing the bottom 18mm bolt head. The coffin arm I cut off flush and then cut in half with an angle grinder as the bolts were seized. Much quicker than a hack saw.
Buy a reciprocating saw to cut the bolts off. Lots easier than messing about with a hand saw.
https://www.screwfix.com/p/mac-allister-msrs850-850w-electric-reciprocating-saw-220-240v/625fx
The ones for a 997 c4 are much cheaper for some reason, a few people on here are using them have a search.
Thats the way to do it! (unless you are exchanging arms at Hartech for refurbed arms).
I don't remember having a problem getting a spanner on to undo the balljoint.
You may find they come undoone without needing to cut them..
:floor:
I used a reciprocating saw to get mine off, but I can see how a grinder would probably be a good deal quicker.
On the bright side, I recently replaced some parts of the front suspension on my car and because when I had first taken apart and reassembled that end about six years ago I had used copper grease, it all came undone without any fuss.
Re above can't seem to quote it but = I don't remember having a problem getting a spanner on to undo the balljoints.
It was the top nut on the tuning fork that was the issue rather than the coffin arms.
Thanks for all the suggestions. Where is the best place for the eccentric Bo?rs? OPC or are they generic sized ones I can pick up from eBay etc?
So just done the tuning fork. Think my spanner access issue was due to having the axle stands on the subframe. Have them on tne jacking point and now it's given me a touch more room and just enough to get the spanner in.
The coffin arms are still the old ones though. I got the nut off the eccentric bolt and could turn it but no way could I get it out. Is there anyway to do this at all!? Can't get a hammer in and a pry bar was doing nothing or is it a cut the bolts job?
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