Exhaust Help

[Silverside]

Well I need some info...

I have a 1.7 engine. it seems that it may have 2.0L HX's and a monza muffler for a 2.0L as well.

I am looking for exact differences or measurments or something that is diffinitive to design that I can use to find out what I have.

Any help would be great thanks.

Geoff C.

[914GT]

I have the exhaust off my '74 2.0. If you want pictures or particular measurements of something that could help you then let me know.

[Dave at Pelican Parts]

I'm not sure what you are asking about, other than "exact measurements"... But the differences can be summed up as follows--

The 2.0 exchangers, if you sit them on the floor, will be flat along the floor all the way back to the muffler flange. The 1.7 exchangers will, between the end of the "heat exchanger" wrapping and the muffler flange, lift up off the floor so the flange is up about two inches.

When mounted in the car, the muffler flanges of the two 2.0 exchangers will be a different distance apart than those of the 1.7 exchangers. I do not remember if they're closer together or further apart.

The muffler of the 2.0 has its inlets at the bottom, because the 2.0 exchangers have their muffler flange lower down. The 1.7 muffler has its inlets in the middle.

The 2.0 muffler hanger is longer from top to bottom, again because the 2.0 muffler flange is lower than the 1.7 version.


...The 75-76 exhaust is completely different from the earlier ones. It has pipes that immediately join together and go forward, then another section that bolts onto those and makes a tight 180-degree bend and comes back. That second section is where the heat exchanger wrapping part is, and it only has a single pipe inside of it rather than the 2 pipes that the earlier systems have. Its muffler flanges are also triangles, instead of the trapezoids of the earlier systems.

I'll try to dig up pictures later.

--DD

[Silverside]

Thanks guys! I'll be waiting for those pictures to compare. After your description dave I think its got the 2.0 parts. The HX's just offset a little bit laterally but not vertically. They look alot like the SS HX's but not so shiny.

Geoff C.

[Dave at Pelican Parts]

OK, here we go....

1.7 stainless-steel heat exchangers. (Sadly, NLA new any more--you'll only find them used like these. Sold just last weekend at a swap meet in SoCal.)




A poor pic of a 2.0 exchanger, together with some of the heater stuff from that side.




A pic of the late-style exhaust system, used on all 75-76 914s.




I thought I had a better pic of the early types, but I couldn't find it. I hope this is of some help.

--DD

[Silverside]

Definitely a 2.0 HX and thus a monza exhaust for 2.0 heat exchangers.

Thanks, thats what I was looking for.

Geoff c.

[silver2.0]

do you want to sell your 2.0 stuff? I have a right side stainless heat exchanger for your car on ebay right now also. Currently at $10.

[silver2.0]

Sorry, Driver's side. My bad.