What's Missing ?
#1
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What's Missing ?
I have a 1988 357 with the silent thunder platform. Both engines are out for rebuild and I needed measurements to order new headers for my trs setup. I pulled the rubber hoses off the thru hulls and it looks like it may have had rubber flappers inside at one time, there's not much left after 21 years. Anyone have any knowledge of these and are they needed ?
Thanks
Thanks
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The pieces that are left are riveted in and are rubber coated. Pieces are in the center of the thru hull pipes, flappers are gone. Just wondering if anyone knows exactly what was in there. Thanks
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I would expect what ever still exists on yours will need to be removed and replaced with entirely new assemblies.
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I think you can get the Flaps from Stainless Marine ....Bad news you might have to remove the box to replace the old flaps
What I would do is just ad the external rubber Flaps on the Cast fittings thru the transom .......m
http://stainlessmarine.com/myProducts.CFM?CFID=1370994&CFTOKEN=35fe85b5522b42 8-2B666823-E74E-38BD-7463B7656A3A5CF3&parentcategoryid=49%7CExhaust%20S uper%20Flaps%20%2D%204%20%26%205%20S%2FS%20Exhaust &productID=34&showDetail=1&categoryID=49|Exhaust%2 0Super%20Flaps%20%2D%204%20%26%205%20S%2FS%20Exhau st&vendoridtodisplay=0&filterFor=&collection=
What I would do is just ad the external rubber Flaps on the Cast fittings thru the transom .......m
http://stainlessmarine.com/myProducts.CFM?CFID=1370994&CFTOKEN=35fe85b5522b42 8-2B666823-E74E-38BD-7463B7656A3A5CF3&parentcategoryid=49%7CExhaust%20S uper%20Flaps%20%2D%204%20%26%205%20S%2FS%20Exhaust &productID=34&showDetail=1&categoryID=49|Exhaust%2 0Super%20Flaps%20%2D%204%20%26%205%20S%2FS%20Exhau st&vendoridtodisplay=0&filterFor=&collection=
Last edited by offthefront; 06-29-2009 at 04:54 AM.
#5
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I know what was in there because I was just inspecting mine on my '92 last week. The pieces that you see are more than likely the hinge component that allows the flappers to, for lack of a better term, flap. The flappers that were there were also covered in rubber to keep them quiet. Not sure where yours went unless the rubber came off, which does happen, and the flappers rotted out.........I suppose that could happen?? Maybe there are pieces inside your Silent Thunder box? Are all 4 of your exhaust tubes showing the same? Sounds like maybe they were removed at some point....though not sure why....?
I would expect what ever still exists on yours will need to be removed and replaced with entirely new assemblies.
I would expect what ever still exists on yours will need to be removed and replaced with entirely new assemblies.
I doubt if this style is still available from Formula. The picture above looks like the way to go, but the box needs to come off. Never did it, how heavy is it ? Can you get the gasket for the box ? This stuff is getting old like me...mm
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Thanks for the help...