Plastique999

Agreed!

lsmkr01

Is the Major service a milage based or time based one? I know item such as clutch wear depend highly on the driver but I'm talking more overall. Great work btw, glad you're giving the community a sneak peak into the world of CGT care.

jimmyrepasi

It is time and mileage. Here is page 4 of every Carrera GT Maintenance Manual.

jimmyrepasi

The old camshafts which Porsche paid to replace





Bank 1 camshaft-less








Without the buckets and shims you can see the top of the valve and retainers





Bucket(left) and shim (right)





The new shim per adjustment needed for this particular valve lash measurement, 2.650mm





Where the shim sits under the bucket





Torquing down the camshaft caps





All torqued











Look close to see the split gear feature below











All the cam timing tools installed on the back of the engine

Gofishracing

what was wrong with cams? oiling problem?

bojali

pitting on the Cams? or?

I just had my Major done in Nov/Dec and the cams looked good. Just wondering if there is a new campaign to update the cams.

CGT000

+1

jimmyrepasi

No update but some cars do need new camshafts due to pitting. It was more common in the early cars but there isn't any rhyme or reason to it.

amerifrikaner

Interesting...apart from doing a major service and opening up the engine are there any other telltale signs of pitting happening...eg can you see some metal shavings in the oil filter or collect small pieces of metal with a magnet during oil change? In the airplane world you can have a sample of your old oil collected and send for oil analysis...can we do the same with our CGT's oil at time of an oil change? Also, what is the cost for new camshafts? I would assume you would be better of doing a major service if you are going through all the trouble of opening an engine.

neanicu

Yes. It is called Blackstone Laboratories.

W8MM

The cams were replaced in my car (VIN ...1166) at around 7K miles during the major service about two years ago. It was ugly, but not nearly as bad as another CGT that was serviced about a month before mine.

Conversations with the PCNA Atlanta tech center revolved around switching to a higher zinc content motor oil, rather than Mobil1, as a preventative.

Any more recent info on oils?

smokeygt

I wonder if the pitting is caused by electrolysis. 2 different metals and such. In boats that are kept in the water, battery chargers cause all kinds of problems with electrolysis. They have special chargers and it is still a problem.

jimmyrepasi

Before W735 Campaign





After W735 Campaign





PCCC cleaned, inspected, installed and torqued





Starter ring torqued





Release module cleaned and reinstalled





Engine back together and ready for a full detail








Back from the detail department





All ready to go back in





All new updated coil packs








Last view of this beautiful piece of engineering before tucking it back into the chassis





Engine oil drain on the left. Transmission oil drain on the right





Coarse oil filter housing





Draining the oil filter housing





Oil filter and seals replaced and housing torqued





oil drains torqued

amerifrikaner

I'm familiar with Blackstone...use them on my planes. Do you know if they do car oil analysis as well?

amerifrikaner

Answered my own question : http://www.blackstone-labs.com/services.php