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914World.com _ 914World Garage _ Stock 1.7 Muffler weld issues

Posted by: barefoot Dec 14 2020, 06:09 PM

Just got this very well preserved OEM 1.7 muffler (thanks SS9146)

looking at the 4 inlets saw considerable weld drop compromising flow area.
With my O/C character, i couldn't sleep tonight if i installed it that way.
Remember that area varies with the square of diameter, so now much improved

As built:
Attached Image

After a little port work:

Posted by: 76-914 Dec 14 2020, 06:48 PM

Much better