Novice in need of advice about cranks

[micky1786]

Hi all,

Can someone please me with finding the right crank or part numbe for my Carrera 996 1999 C4S please?.

Someone says the 2.7 3.2 are the same but I'm doubtful.

TIA

[996TT02]

Probably

99610201203

02- M96.03

This is off the US "Katalog" pdf (search for this and download, perhaps the Euro is different)

[996TT02]

If you want to know whether any 3.2 cranks are the same, you will need to find the p no for the 3.2, and check what that has been updated to, if it matches then so be it, as the p no above is definitely "996" - p nos update all the time as as far as I know an old part that may have started off say "993-" would become "996-" if also used in the 996

[micky1786]

996TT02 said:

If you want to know whether any 3.2 cranks are the same, you will need to find the p no for the 3.2, and check what that has been updated to, if it matches then so be it, as the p no above is definitely "996" - p nos update all the time as as far as I know an old part that may have started off say "993-" would become "996-" if also used in the 996

Thank you ever so much for tha info as I was thinking the only real way to know is have the crank in my hands to know the PN for sure.

I will update as I go along and sorry for the Late response

[micky1786]

996TT02 said:

If you want to know whether any 3.2 cranks are the same, you will need to find the p no for the 3.2, and check what that has been updated to, if it matches then so be it, as the p no above is definitely "996" - p nos update all the time as as far as I know an old part that may have started off say "993-" would become "996-" if also used in the 996

Thank you ever so much for tha info as I was thinking the only real way to know is have the crank in my hands to know the PN for sure.

I've just realised something whilst driving back home last night and after seeing this crank case with two rods being smashed up and both being seized or Locked up by the crank and this is not how I'd described it when it had broken down and I started it again as the car wasn't knocking and still able to start it twice without any rattles or bangs so what's gone down here looks like someone's been turning it over and over and over as there's no way this was seized when I left it at the garage.

Edited by micky1786 on Sunday 5th March 13:21

Edited by micky1786 on Sunday 5th March 13:23

[micky1786]

996TT02 said:

If you want to know whether any 3.2 cranks are the same, you will need to find the p no for the 3.2, and check what that has been updated to, if it matches then so be it, as the p no above is definitely "996" - p nos update all the time as as far as I know an old part that may have started off say "993-" would become "996-" if also used in the 996

Thank you ever so much for tha info as I was thinking the only real way to know is have the crank in my hands to know the PN for sure.

I've just realised something whilst driving back home last night and after seeing this crank case with two rods being smashed up and both being seized or Locked up by the crank and this is not how I'd described it when it had broken down and I started it again as the car wasn't knocking and still able to start it twice without any rattles or bangs so what's gone down here looks like someone's been turning it over and over and over as there's no way this was seized when I left it at the garage.

Edited by micky1786 on Sunday 5th March 13:21

Edited by micky1786 on Sunday 5th March 14:01

[Richard Hamilton]

When you say 1999 C4S (there isn't any such model) I assume it is a 1999 C4 Tiptronic S.

If that is correct, the last revision of the original crankshaft is part number 996.102.011.55, which appears to be unique to the 996. They changed the cam drive from chain to Hiko tooth chain, which I believed happened for MY2001. I think you are stuck with looking for an exact replacement from an M96.01 or M96.02 engine.

[micky1786]

Richard Hamilton said:

When you say 1999 C4S (there isn't any such model) I assume it is a 1999 C4 Tiptronic S.

If that is correct, the last revision of the original crankshaft is part number 996.102.011.55, which appears to be unique to the 996. They changed the cam drive from chain to Hiko tooth chain, which I believed happened for MY2001. I think you are stuck with looking for an exact replacement from an M96.01 or M96.02 engine.

Thank you kindly for your reply to this.

Engines totally dead so looking at another one now

Can we do a 3.6 conversion on it and what would be required please?.

[micky1786]

Went to see the car engine part stripped and I've just realised something whilst driving back home last night and after seeing this crank case with two rods being smashed up and both being seized or Locked up by the crank and this is not how I'd described it when it had broken down as I started it again and just a puff of smoke. The engine wasn't knocking or rattling like the last time it happened and the rods bent less damage than this one which was still able to start it twice without any rattles or bangs so what's going on here looks like someone's been turning it over and over and over as there's no way this was seized when I left it at the garage.
Someone tell me I'm stupid and haven't got a clue what I'm blabbering on about regarding the images and how I described the car to been able to be start twice without out knocking or seizure and now it looks like the Rods would never allow the engine to even turn?.

Edited by micky1786 on Sunday 5th March 14:44

[Pope]

You are unlikely to be able to prove either way; the damage is done now. A pointer towards the actual cause may be the condition of the oil; it has mixed with the coolant for a fair while by the looks of it - very emulsified.

Did you have any misfiring before it stopped or regularly from cold start recently??

[micky1786]

Hello pope, when the car actually broke down there was a sudden judder and I immediately pulled over to the hard shoulder whilst braking and the car literally st off. No indication of it about to fail but I did start it up again and it just puffed out with a cloud of smoke so I turned it off again.
My brother came to my rescue and he also gave it a one quick start and stop and again a puff of smoke but definitely no indication of knocking or seizure what so ever.

No we cannot prove they've caused this at the garage but I'm 110% sure they have as I'm a tech my self.
Sad to learn people out there like this as I know it was a head gasket issue as the way the engine is looking ATM looks like it's been started many times over for the rods to smash up like this.

Edited by micky1786 on Wednesday 8th March 00:39