A fellow formulist picked up a solid F-3 LS this summer. We did all the show stuff,(paint,upholst...) but it's too quiet. The snag is that the old merc manifolds have the riser at the rear. Looks to me like all the aftermarket systems out are for the later style center riser applications. Any ideas about mods or suppliers of older style exhaust. Cost is an issue for him. Maby just go straight thru and then do what with the "y"? We don't think the fish in Lake Mich. will complain about the noise. Any help would be appreciated.
Out hull exhaust for F3
- Thread starter wakezone
- Start date
resurrected
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Welcome to the board! I don't know of any aftermarket stuff that is a direct replacement for the older manifolds. It depends on how much money you wish to spend, aftermarket center dump manifolds straight out the back would be plenty loud! You could add a "silent choice" type system and have the best of both worlds, or straight pipe it and block off the Y-pipe. If you wish to remove the Y-pipe you will need to lift the engine out. Or you can cap it off at the top! Good luck and post some pics!
I have an entire original Merc log style exhaust system. I cannot believe how good of shape it's in. I have it on ebay right now, I don'[t know if it will help, but it's just in too good of shape to throw away. If it doesn't sell on ebay, you can have them for just the shipping cost. Beware, they are heavy, so they would probably have to be shipped LTL, but if you have a commercial place you know of with a loading dock, I don't think the shipping would be too bad. I could strap them to a pallet and ship it that way. I swapped out the exhaust on Debbie's 22 Donzi for some aftermarket exhaust. I'm running into a couple of issues with routing it down to the tips.
Here's the exhaust. It's actually in better shape than it looks in the picture.
Here's the exhaust. It's actually in better shape than it looks in the picture.
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I have an issue to overcome. I need to drop the exhaust hose about eight inches in a 15 inch length to drop it to where the original tips come out. I think I'll have to have some "S" pipes fabricated to drop it down that far. I'm sure that sharp of a bend will cause the exhaust to melt the hose at the bends.
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It's going to be tight. I looked in my old EMI catalog and the shortest length they had for a 4" SS 90 degree elbow was 7". And these had no straight ends to clamp the tubing to. If my thinking is correct it woud take up about 10". That should leave you about 5" for hooking things up. Keep us posted. I'd like to see what you come up with.