Have a photo or two wife's phone, but have to convert the formate to get it to post here. On the family farm barn find 1917 roadster, there is an exhaust butterfly valve in the pipe located firght around the fuel tnak and seat riser with a short piece of hard wire attached to the choke plate that looked like it was operated from the seat/cabin area.
Pretty nice installation, feels real smooth, welded in, not clamped on. Is installed so that the open plates are on the top and bottom, not side to side. No other evidence of a whistle mount or installation.
Would there be any other reason to have a bypass valve installed? I'll try to post a photo if I can, but just curious as to why the valve and if I should look around for what this was used for.
Thanks in advance.
Exhaust cutouts in early days performed duty to reduce back pressure of clogged muffler keying the engine run cooler. Fords ran hot so owners used them for cooling on the open roads. Also help in listening to each cylinder hit to tell by noise which cylinder is missing.
Cool! Thanks Dan. Now I dont have to look around for a whistle that is missing. In fact, might even consider finding one that will connect to this fitting.
Were they added to a stock pipe? Or could you purchase a pipe with the valve already in place? Feels like a pretty nice installation for Bubba to do it. But, might even be just a cut and slip on connection.
Always added to the regular stock pipe, normally closer to the exhaust manifold for cut out use.
For whistle, you could mount it near, or some whistles were made to fit on the tail pipe at the rear of the car.
Lots of different makes made, including accessory pedals for control of the cut out.
Whistles are made new today, along with cut out adapters, check the vendor's catalogs.