996 3.4 carrera crankshaft resurface

[ffeibiss]

Hello everybody,

Recently our 996 engine started making akward ticking noise as if the engine was totalled. The milage is 100k km and I was not surprised of this problem after reading stories about 3.4 porsche engines.

My mechanic took the engine apart and found that the water pump was broken and the noise was from the pump (thank God!). However he found metal particles inside the engine and found another problem: one rod bearing was completely worn (i guess the rod was spun) .

I don't see the point to put a new engine which is half the price of the car, and I think it is possible to repair it? My father bought the car new back in 2000 and he never over-revved it. The car is very exclusive with rare options and i want to keep it...

So going to the question: Is it possible to resurface the crankshaft and buy oversized rod set? where can I buy them?

Thank you in advance,

Best regards,

Fabian

P.s. sorry for my english:)

[JFP in PA]

Hello everybody,

Recently our 996 engine started making akward ticking noise as if the engine was totalled. The milage is 100k km and I was not surprised of this problem after reading stories about 3.4 porsche engines.

My mechanic took the engine apart and found that the water pump was broken and the noise was from the pump (thank God!). However he found metal particles inside the engine and found another problem: one rod bearing was completely worn (i guess the rod was spun) .

I don't see the point to put a new engine which is half the price of the car, and I think it is possible to repair it? My father bought the car new back in 2000 and he never over-revved it. The car is very exclusive with rare options and i want to keep it...

So going to the question: Is it possible to resurface the crankshaft and buy oversized rod set? where can I buy them?

Thank you in advance,

Best regards,

Fabian

P.s. sorry for my english:)

Porsche does not supply crank or rod bearing shells in other than stock sizes. I am also not aware of anyone in the after market that does either. Suggest looking for a new replacement crank and rod(s); and it would also be a good time for better rod bolts like ARP.

[Ronnie38]

I also have a 1952 MGTD that had spun a bearing on number 1. I took the crank. to a truck/industrial engine machine shop, they built up the crank and machined it to back stock size. so bearings were not a problem. Works like a champ, good for another 50K. Only cost $100.00

[JFP in PA]

I also have a 1952 MGTD that had spun a bearing on number 1. I took the crank. to a truck/industrial engine machine shop, they built up the crank and machined it to back stock size. so bearings were not a problem. Works like a champ, good for another 50K. Only cost $100.00

The "spray welding" process used to do that type of repair is dependent upon how the crank was originally made; forged steel can be welded up, nodular iron is much more difficult to do. You would need to talk to a top quality crank shop on ifs type of repair is even possible.