Question for the 3.2 to 3.4 twin plug builders...
 

Also posted in the engine build threads...


Having issues with heat ducting on my 3.2 to 3.4 build and found this old thread. Wanting to keep the heat original and looks like this might be a work around and wondering if anyone has had similar issues or seen an alternative. (?)

1986 3.2 to 3.4 build using the 964 distributor. Trying to keep the heat as I just installed new SSI heat exchangers for this sole purpose.


Any insight is appreciated...

Erik





Photo and write up are from this thread:

https://forums.pelicanparts.com/porsche-911-technical-forum/56887-3-2-3-4l-twin-plug-conversion.html


http://forums.pelicanparts.com/uploa...1756936736.jpg


- The twin plug distributor interferes with the plastic duct that goes from the side of the engine fan up to the heater blower. A friend and I removed the duct and clamped it with some blocks of wood and then heated it up with heat gun to give it a factory looking bulge that clears the distributor. I was really proud of the way it came out.

- The new twin plug distributor is also in the way of the plastic duct that feeds air from the blower motor to the heat exchangers. I modified the inlet of the stainless "T" that feeds air to the heat exchangers and made a new hole in the engine tin for a length of heater hose. This was not totally satisfactory. (The hose goes inside the "T" instead of being clamped on the outside and blows out sometimes.) I wound up not using the plastic elbow in the picture, it interfered with the motor mount.