Discussion
Strange one this, concerning my 07 Cayman S
Went to play footy last night parked the car all seemed well. Drove home again things seem fine. Had a shower (this isnt about my nuts...) and then drove to the pub for the evening.
Was parking the car and told the GF to get out so i could park closer to the bushes on the end of a row. She got out but my ears pricked up to the sound of a gruff exhaust note. Told her to hold the door open and gave it a little rev and as i thought the exhaust was blowing on the left bank. Bugger.
Went home after pub and had a look with the torch last night but couldnt see anything a miss, so left it to this morning. So at 0630 i was outside whipping the wheel off and the inner arch liner so i could see the full length of the exhaust. Fired her up and had a listen, sounded bad but still couldnt see anything, so i ran my hand next to the Manifold and the cat up towards the flange and then i felt it. The Flnage is blowing. Then i looked at it in detail, all the Nuts are missing from the Flange Joint.....All 3...havent checked the offside yet......
No idea how this could happen, current theories are:
Major 40k Service done in June at Cambridge - Why would they need to loosen the exhaust though?
They've just vibrated loose - Exhaust bolts/nuts are usually hard to remove at the best of times
Some herbert is trying to steal my exhaust - Difficult to do but not impossible
Previous owner had aftermarket exhaust - Didnt fit nuts back on and its worked lose, but ive had it over a year and its only just started blowing
If anyone has any experience or thoughts on this i'd be interested to hear.
Went to play footy last night parked the car all seemed well. Drove home again things seem fine. Had a shower (this isnt about my nuts...) and then drove to the pub for the evening.
Was parking the car and told the GF to get out so i could park closer to the bushes on the end of a row. She got out but my ears pricked up to the sound of a gruff exhaust note. Told her to hold the door open and gave it a little rev and as i thought the exhaust was blowing on the left bank. Bugger.
Went home after pub and had a look with the torch last night but couldnt see anything a miss, so left it to this morning. So at 0630 i was outside whipping the wheel off and the inner arch liner so i could see the full length of the exhaust. Fired her up and had a listen, sounded bad but still couldnt see anything, so i ran my hand next to the Manifold and the cat up towards the flange and then i felt it. The Flnage is blowing. Then i looked at it in detail, all the Nuts are missing from the Flange Joint.....All 3...havent checked the offside yet......
No idea how this could happen, current theories are:
Major 40k Service done in June at Cambridge - Why would they need to loosen the exhaust though?
They've just vibrated loose - Exhaust bolts/nuts are usually hard to remove at the best of times
Some herbert is trying to steal my exhaust - Difficult to do but not impossible
Previous owner had aftermarket exhaust - Didnt fit nuts back on and its worked lose, but ive had it over a year and its only just started blowing
If anyone has any experience or thoughts on this i'd be interested to hear.
Baz The b
d said:
d said: Strange one this, concerning my 07 Cayman S
Went to play footy last night parked the car all seemed well. Drove home again things seem fine. Had a shower (this isnt about my nuts...) and then drove to the pub for the evening.
Was parking the car and told the GF to get out so i could park closer to the bushes on the end of a row. She got out but my ears pricked up to the sound of a gruff exhaust note. Told her to hold the door open and gave it a little rev and as i thought the exhaust was blowing on the left bank. Bugger.
Went home after pub and had a look with the torch last night but couldnt see anything a miss, so left it to this morning. So at 0630 i was outside whipping the wheel off and the inner arch liner so i could see the full length of the exhaust. Fired her up and had a listen, sounded bad but still couldnt see anything, so i ran my hand next to the Manifold and the cat up towards the flange and then i felt it. The Flnage is blowing. Then i looked at it in detail, all the Nuts are missing from the Flange Joint.....All 3...havent checked the offside yet......
No idea how this could happen, current theories are:
Major 40k Service done in June at Cambridge - Why would they need to loosen the exhaust though?
They've just vibrated loose - Exhaust bolts/nuts are usually hard to remove at the best of times
Some herbert is trying to steal my exhaust - Difficult to do but not impossible
Previous owner had aftermarket exhaust - Didnt fit nuts back on and its worked lose, but ive had it over a year and its only just started blowing
If anyone has any experience or thoughts on this i'd be interested to hear.
I'd bet on the thieving Went to play footy last night parked the car all seemed well. Drove home again things seem fine. Had a shower (this isnt about my nuts...) and then drove to the pub for the evening.
Was parking the car and told the GF to get out so i could park closer to the bushes on the end of a row. She got out but my ears pricked up to the sound of a gruff exhaust note. Told her to hold the door open and gave it a little rev and as i thought the exhaust was blowing on the left bank. Bugger.
Went home after pub and had a look with the torch last night but couldnt see anything a miss, so left it to this morning. So at 0630 i was outside whipping the wheel off and the inner arch liner so i could see the full length of the exhaust. Fired her up and had a listen, sounded bad but still couldnt see anything, so i ran my hand next to the Manifold and the cat up towards the flange and then i felt it. The Flnage is blowing. Then i looked at it in detail, all the Nuts are missing from the Flange Joint.....All 3...havent checked the offside yet......
No idea how this could happen, current theories are:
Major 40k Service done in June at Cambridge - Why would they need to loosen the exhaust though?
They've just vibrated loose - Exhaust bolts/nuts are usually hard to remove at the best of times
Some herbert is trying to steal my exhaust - Difficult to do but not impossible
Previous owner had aftermarket exhaust - Didnt fit nuts back on and its worked lose, but ive had it over a year and its only just started blowing
If anyone has any experience or thoughts on this i'd be interested to hear.
theory, they love prciuos metals.
Just some feedback on this
I have now remedied the issue for now, but i am going to need to revisit this when i have more time.
In the case of my car, as suggested above, the nuts had completely rotted away leaving the remants of the treads still attached to the bolts and thats all. The bolts had also suffered bad corrosion on the threads and the heads of the bolts had completely rotted away along with corrosion apparent on the thread to. This meant there was nothing left of the heads of the bolts that was usable to wind them out.
My fix for now was to clean the thread up on the bolts and remove what was left of the nuts. Then i used a dremmel to cut back the threads to a workable section so that i could get a new nut on. Installed the new nut and we're ok again with no exhaust blow.
The bolts will need replacing though since the corrosion on them is quite bad, in fact im suprised i managed to torque the nuts down, without the thread snapping. To get whats left of the bolts out i will need to remove the manifold/header and either use a stud extractor or drill them out. This may be possible on the car but i think the best course of action is to remove the manifold/header and do it on a bench to remove fire risks and any other damage. the lazy option is to let nature do its work and corrode away whats left of the bolts! (this wont take long)
In all this cost me the princely sum of 3 pounds and 11 pence (bolts and nuts) and is easy done on the drive. So if it happens to you, you can save yourself a few quid by getting your hands dirty. It has made me think about a new exhaust system though.......but thats another story for another day.....
I have now remedied the issue for now, but i am going to need to revisit this when i have more time.
In the case of my car, as suggested above, the nuts had completely rotted away leaving the remants of the treads still attached to the bolts and thats all. The bolts had also suffered bad corrosion on the threads and the heads of the bolts had completely rotted away along with corrosion apparent on the thread to. This meant there was nothing left of the heads of the bolts that was usable to wind them out.
My fix for now was to clean the thread up on the bolts and remove what was left of the nuts. Then i used a dremmel to cut back the threads to a workable section so that i could get a new nut on. Installed the new nut and we're ok again with no exhaust blow.
The bolts will need replacing though since the corrosion on them is quite bad, in fact im suprised i managed to torque the nuts down, without the thread snapping. To get whats left of the bolts out i will need to remove the manifold/header and either use a stud extractor or drill them out. This may be possible on the car but i think the best course of action is to remove the manifold/header and do it on a bench to remove fire risks and any other damage. the lazy option is to let nature do its work and corrode away whats left of the bolts! (this wont take long)
In all this cost me the princely sum of 3 pounds and 11 pence (bolts and nuts) and is easy done on the drive. So if it happens to you, you can save yourself a few quid by getting your hands dirty. It has made me think about a new exhaust system though.......but thats another story for another day.....
I think you'll find that if the studs are original, they're splined into the Cat' hence you were able to torque the replacement nuts down without too much issue. To replace the studs you'll need to heat the flange and knock the studs out. Since 9x6 the exhaust fixings last about 3 months before deteriorating to fuzzy lumps of cack.....
I think you'll find that if the studs are original, they're splined into the Cat' hence you were able to torque the replacement nuts down without too much issue. To replace the studs you'll need to heat the flange and knock the studs out. Since 9x6 the exhaust fixings last about 3 months before deteriorating to fuzzy lumps of cack.....
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