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| cayenne ticking http://forums.tipec.net/viewtopic.php?f=12&t=16218 |
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| Author: | scadgybadger [ Mon Sep 30, 2013 8:18 pm ] |
| Post subject: | cayenne ticking |
Hi I have a 2004 cayenne s with 88,000mls engine is ticking I have inspected the bores and all are scored in some way. I am thinking of boring the engine to accept top hat liners & forged pistons has anyone heard of anyone else doing this as it,s a lot more economical than re,plating or a short motor. please feel free to tell me your thoughts. cheers Paul |
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| Author: | steve928gt [ Mon Sep 30, 2013 9:14 pm ] |
| Post subject: | Re: cayenne ticking |
These engines should be good for over 500,000 miles with a good quality oil. Have you carried out a compression a leaking down test yet ? |
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| Author: | scadgybadger [ Mon Sep 30, 2013 10:25 pm ] |
| Post subject: | Re: cayenne ticking |
Not really a lot of point in a leakage test with cylinders as badly scored as this its only a matter of time before a partial seizure or total piston destruction occurs. I agree these engines should be good for plenty more miles but with inferior products used in the production process & the combination of super scrimpers doing the servicing on a budget or just using the wrong grade of oil it shortens the life by a vast amount. |
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| Author: | tr7v8 [ Tue Oct 01, 2013 7:03 am ] |
| Post subject: | Re: cayenne ticking |
When I was looking at a Cayenne I was told that a few engines have failed in this way. Normally starts as a light tapping noise, which is piston slap then gets worse. The 911 & PW buying guide alluded to this as well. The costs of rebuild would be horrific personally I'd get another engine from a write off. |
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| Author: | scadgybadger [ Thu Oct 03, 2013 7:31 am ] |
| Post subject: | Re: cayenne ticking |
I have looked round at engines out of write off,s but you are taking a big chance it may go the same way sooner or later with the dreaded tap. I think better the devil you know so I will probably rebuild this one. |
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| Author: | scadgybadger [ Wed Oct 30, 2013 7:15 pm ] |
| Post subject: | Re: cayenne ticking |
Engine now removed & stripped cyls 2 & 3 6 & 7 all very badly scored & significant play causing a tapping sound contacted Porsche uk about the problem was advised they would consider goodwill if I pay the labour for my local OPC to fit new block. the price was more than the vehicle is worth. So engine is having top hat liners fitted & bored to original size, new custom made pistons to suit the liners & a full rebuild the story continues....... |
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| Author: | scadgybadger [ Sun Nov 02, 2014 10:47 am ] |
| Post subject: | Re: cayenne ticking |
A year after the project started Top hat ductile liners fitted to block & decked. 8 new custom pistons manufactured in america engine rebuilt new shells chains guides & gaskets all valves ground & heads rebuilt. Engine fitted last weekend runs & drives like clockwork now done 110 miles running in is boring cant wait to open it up. 
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