Summer lower cowl lip 0452199

[6643]

Ah, compound curves!

If I have time tonight I'll see what I can do with the old thread.

[4004]

John C, I 'm pretty sure that's the thread I was remembering - not the specifics of the lip but possibly the action of the lip. In that regard, as a physicist, I think the temperature reduction is due to the "Bernoulli principle" on the ram air flow - think venturi.

David, look closely at the photo of the 46 cowl , and I'm sure you have, but it was made in two pieces - probably not an OEM fabrication, also it's riveted on viz-a-viz Tinnerman nuts. Suggest you take two separate pieces of cardboard and make a template for each side and tape them to the inside rear edge of the cowl. Then , using your hand or a seaming tool bend the "tip" cardboard down and trim resulting in the straight line bottom edge on the lip. Using this template should help form each metal piece by placing the metal between two piece of wood ( furring strips) and clamping the straight edge in a vice and then forming the inside edge that attaches to the cowl. Judicious use of a hammer and bucking bar, duckbill pliers, seaming tool are probably all in order. I know, that won't be easy, easy but it doesn't have to be "pretty" since it will be inside the cowl and having two separate pieces should facilitate fabrication

When making templates, I use the cardboard that the 12 pack drink cans are in . It's tough.

[6643]

If I have time tonight I'll see what I can do with the old thread.

Here you go! Old cowl lip thread.

[6597]

John,

Thanks! Looks like my posts from 2005 I've gone from an engine running way too cool to one that is running rather hot. Randy's pic was helpful of the actual lip. I think also with Edd's suggestions I've got an idea how to make one without too much fuss.

[6643]

Here's another thread from the old forum that discusses the doubler.