Cayman 3.4l into Boxster?

[clubhead]

Anyone knows whether the Cayman S 3.4 will fit into a 986 Boxster?

http://cgi.ebay.com/ebaymotors/2006-Porsch...1QQcmdZViewItem got me thinking.

It may well be less of a PITA than a 996 3.4l or 3.6l conversion...

[tholyoak]

Not into a pre-2002 car. You will have the same issues with electronics as you would with a 3.6 into the earlier cars. The later ones sure, but with a later car why not at least go with a 3.6. There really aren't any 'issues' with the 996 based 3.4

Todd

[clubhead]

Not into a pre-2002 car. You will have the same issues with electronics as you would with a 3.6 into the earlier cars. The later ones sure, but with a later car why not at least go with a 3.6. There really aren't any 'issues' with the 996 based 3.4

Todd

Well, I was thinking that it may be a direct mount to the chassis of the Boxster instead of having to custom make the engine mounts and other stuff I've been reading.

[mikefocke]

Why the 2002 date? Wasn't the cutover in engine control electronics in 2000?

[insite]

Why the 2002 date? Wasn't the cutover in engine control electronics in 2000?

yup; e-gas started in 2000.

[Loren]

Yes, and the DME changed from 5.2.2 to 7.2 in MY2000 (mainly for egas) and to 7.8 in MY03.

The MY03 and new cars also support more controller-to-controller communication (i.e. new style instrument cluster, etc.) via CAN as of MY03.

[tholyoak]

Ok, maybe I have the year wrong for the boxster. The issue with the 3.6 and the Cayman 3.4 engine is control of the Variocam plus in these engines. I believe they require the DME 7.8 which was introduced on the 2002 996. I assumed the 2002 Boxster also was updated to 7.8 but I guess it didn't happen til 2003.

Todd

[clubhead]

Ok, maybe I have the year wrong for the boxster. The issue with the 3.6 and the Cayman 3.4 engine is control of the Variocam plus in these engines. I believe they require the DME 7.8 which was introduced on the 2002 996. I assumed the 2002 Boxster also was updated to 7.8 but I guess it didn't happen til 2003.

Todd

Hmmm.... so if I'm looking for an engine transplant for my 2000 S, the just about only option available would be the 996 3.4l? That is without replacing the entire electrical system that's needed to support the 996 3.6l or the Cayman 3.4l ones.

[mee]

The issue with the 3.6 and the Cayman 3.4 engine is control of the Variocam plus in these engines.

Todd

Hmmm.... so if I'm looking for an engine transplant for my 2000 S, the just about only option available would be the 996 3.4l? That is without replacing the entire electrical system that's needed to support the 996 3.6l or the Cayman 3.4l ones.

Todd's info sounds right. There are a few places that have some "extra" for controlling the VarioCam Plus on the earlier 7.2 Motronic. I think one was FVD and the other was some racing outfit that had made a controller for some tuner (Roock?) that went out of business or stiffed them or something. Take the preceding with a grain of salt, but apparently some people have found a solution. I'm pretty sure I saw those posts over on Rennlist.