Just following up on a topic that popped up here: timing case covers

I need a set of chain boxes and aside from the material being aluminum vs mag are there any other differences between the 993 and 964 boxes (aside from the prices?) If there are can the 993 boxes be used on the 964 anyway?

Pete

 

The 993 uses the 964 part number for the right side and the 993 left side is now superseding the 964 part number. The differences between the one side are minor and the changes don't impact their use on the 964 but the 964 left side will make using it on the 993 a bit more complicated. AFAIK it has to do with some external mountings only. I will try to get back to the warping thread. I have determined the material is an aluminum alloy with high magnesium content. Similar to ALMag35 It is also used for the fan housing on the 964's while the fan remains magnesium.

I too am looking for a left side for my engine build. I have one cracked one and am hoping not to spend $1k for a new one unless I have too.

 

Albert Motorsport in Germany said they had a number of chain boxes (used) on shelf when I enquired earlier this year. Would be worth dropping them an email. 9lf.de