Trial fitting my exhaust today...On the front two pipes there is a threaded fitting welded in there on each of them. What are they for? Seems way far forward for smoking injector inlets...?
![inlet2013-09-14 13.40.jpg inlet2013-09-14 13.40.jpg](https://cdn.imagearchive.com/biplaneforum/data/attach/4/4484-inlet2013-09-14-13.40.jpg)
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