Is it possible to make 911 heat exchangers work Options

[LarryR]

Hi,

I have a quick question for you six conversion guys. Is it possible to just build an extension pipe on the 911 heat exchangers to make them work in a 914?

A friend of mine is swapping in a 3.0 and it has SSI's on it so he wanted to know if he could just make the extension pipe.

Thanks in advance for the info.

Larry

[Larry.Hubby]

I did the very thing you're talking about when I first got my 3.0 running. I left the HE's pointing the right way and built some tubes with "U" bends to take the heated air output and bring it back down, under the heads, then forward to the 914 flapper boxes. The other ends of the exchangers hooked up to the air hoses from the engine like stock. I ditched the cat and built a flange to match the HE/crossover tube combination and send the exhaust backward to a single-entry muffler in the stock 914 location. It all worked, but the underside of the engine was nightmarishly crowded with stuff. The worst of it was that the crossover tube interfered with the gearshift, and I had to make a rod with an offset in it that just barely cleared everything.

I got rid of the setup fairly quickly and went to headers, then bought some 914-6 HE's and haven't had any hassle or cold driving since. Wish I could find some pictures of the old setup, but this was a long time ago (1983), before the digital camera era.

Larry