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YOUR RESEARCHReplaced AOS bellow today
Reported repair
Run perfectly - all
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Performed · outcome unconfirmed
I phoned my Local Hero Tony at WrightTune who kindly fitted me in over lunchtime.
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Use angled (aprox 30 degree) long needle nose pliers
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Performed · outcome unconfirmed · Original poster
First was to remove the old perished bellow, ideally you want to use lockable hose clamp pliers with a cable for easy access, but I used angled (aprox 30 degree) long needle nose pliers which just required a bit more work with my hands (those spring clamps are VERY strong).
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Use angled (aprox 30 degree) long needle nose pliers
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Performed · outcome unconfirmed · Original poster
First was to remove the old perished bellow, ideally you want to use lockable hose clamp pliers with a cable for easy access, but I used angled (aprox 30 degree) long needle nose pliers which just required a bit more work with my hands (those spring clamps are VERY strong).
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Suggestion · Original poster
First was to remove the old perished bellow, ideally you want to use lockable hose clamp pliers with a cable for easy access, but I used angled (aprox 30 degree) long needle nose pliers which just required a bit more work with my hands (those spring clamps are VERY strong).
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Somewhat of a tricky job, but if you are used to standing on your head and fidling around in tight spots then it's not all that bad!
I did this on axel stands, and it took me around 45 minutes from start to finish, including getting the car in the air and the wheel off and all back together.
First was to remove the old perished bellow, ideally you want to use lockable hose clamp pliers with a cable for easy access, but I used angled (aprox 30 degree) long needle nose pliers which just required a bit more work with my hands (those spring clamps are VERY strong).
A few pics:
The corrigated pipe to the left of the connector, I removed the variocam connector and moved out of the way a little so it wouldn't get damaged in the process.
It was a little hard to take a picture while removing the clips (i didn't have enough hands!). The clips require a bit of force to push together and release them, but I positioned the pliers on the edges of the clamp, squeezed hard to put them totally together and release it, and then pulled the pipe off of the AOS with my other hand.
Once the top was pulled off, I then pinched the bottom clamp together to release it and lifted the clamp upwards. The bellow was stuck on the cylinder block, so I needed to gently pry with a flatblade.
The bellow removed:
Old bellow:
New:
New vs old:
I then positioned a new stainless jubilee clamp on the top of the new bellow, it was wound out and loose at the time to allow the bellow to be pushed onto the bottom of the AOS. I then tightened slightly to hold it on. The next stage was putting an unwound jubliee clamp over the bottom of the pipe (whilst bending it outward away from the bottom) and then manipulating the bottom of the bellow over the pipe on the block. This was a little tricky, in that I needed to push my finger through the space in the middle and stretch it around the bottom pipe from the back forwards, it's a little hard to explain..
As you can see, I managed to tigten with a very large and long flat blade:
Completed and vanos connector back on:
There we go, oil pressure seems to have increase slightly from 1-1.5 to around 2 on tick over, at throttle it's roughly the same.
The bellow cost aprox £10 from an OPC.
Cheers,
Steve
*edit, I clearly meant Variocam not vanos on the last picture
going back to my bmw days there....*
I thought I had major oil leak problems a couple of monthes ago - there were suddenly large oil puddles appearing under the car everytime I parked - when I looked under the car the whole underside of the engine was oil splattered - I feared the worst as did my wallet. The car had also started to overrev at junctions and feel sluggish. I phoned my Local Hero Tony at WrightTune who kindly fitted me in over lunchtime. As he raised the car there was a puddle of oil on the garage floor and Tony looked at me and calmly said 'That doesn't look promising!'. After a while when it looked as if it might be seal related he suddenly decided the main leak appeared to be one side - he prodded around and found a hole in the afore mentioned bellows big enough to stick his finger in. Even more luck was that he had a spare and fitted it there and then and like you resorted to jubilee clips and a bit of cursing to refit the new one. No more leak - car ran perfectly - all for £40. Can't recommend Tony highly enough.
Good stuff glad you got it done at a good price.
When i told the chap at the OPC about it, he said he had no idea on price and it could be charged at over 1 hours labour.
The likely hood is that it is a £100 job at a Porsche centre.
Regarding the clips, aside from the fact they would have taken a lot longer to replace and they were tatty, i am not a fan of them. The old hose was swollen and distorted where the heat allowed the bellow to increase in size between the gap in the clamp. The result was that the rubber thinned. The stainless ones should last as long as that bellow or subsequent ones are installed
No problem Rodney
