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914World.com _ 914World Garage _ Exhaust Dimensions?
Posted by: Thestigz06 Dec 10 2011, 12:20 PM
Ive noticed that alot of different exhausts marketed (exchangers and headers) for different size motors so whats the difference measurement wise in the 1.7 vs the 2.0?
Posted by: Dave_Darling Dec 10 2011, 09:07 PM
The main difference is at the muffler flanges, where the heat exchanger part bolts up to the muffler. The 1.7 (and 74 1.8) versions are a different distance apart when mounted on the engine, and they are a little further up off the ground.
There is at least one post out there that has the measurements along with pictures, but I haven't looked for it in a while.
--DD
Posted by: pilothyer Dec 11 2011, 02:36 PM
Ive noticed that alot of different exhausts marketed (exchangers and headers) for different size motors so whats the difference measurement wise in the 1.7 vs the 2.0?
Compliments of The Jeff Bowlsby Site. This picture is worth a thousand words.
Posted by: johannes Dec 12 2011, 06:33 AM
1.8 and 2.0 of 1975-1976 exhaust system is also very different.
Posted by: Thestigz06 Dec 12 2011, 10:32 AM
Good to know. Thanks from the knowledge guys! 
Posted by: Highland Jul 10 2014, 05:12 PM
I just put on my heat exchangers/exhaust on my 2.0L (torqued to 15 ft-lb at the heads) and the 19 3/4" dimension shown in the picture measures 19 1/4" on my set-up. Engine is outside of car.
Do I have to loosen up the exhaust to head nuts to wiggle the muffler and muffler bracket in place then tighten everything or is there something wrong?
Posted by: Drums66 Jul 10 2014, 05:29 PM
1.8 and 2.0 of 1975-1976 exhaust system is also very different.
.....Yes!
Posted by: Highland Jul 10 2014, 06:33 PM
I think they're 2.0L 73-74 heat exchangers. Aren't the 75-76 more square? and the 1/7/1.8 L heat exchangers have a vertical bend at the muffler end?
I know it's a poor picture, but maybe someone can tell me if I've got the wrong part.
Posted by: bdstone914 Jul 11 2014, 08:04 AM
I just put on my heat exchangers/exhaust on my 2.0L (torqued to 15 ft-lb at the heads) and the 19 3/4" dimension shown in the picture measures 19 1/4" on my set-up. Engine is outside of car.
Do I have to loosen up the exhaust to head nuts to wiggle the muffler and muffler bracket in place then tighten everything or is there something wrong?
Yes loosen the nuts on the exhaust studs at the heads and you can get the muffler and bracket to line up.
Bruce
Posted by: Highland Jul 11 2014, 07:25 PM
That worked. Thanks for the help.
A couple more questions.
1) Does it matter what order in which I tighten everything back up?
2) Do I just add washers between the transmission and muffler hanger to close up any gap there?
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