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Silent Thunder removal on newer FasTechs

Old 12-11-2006, 07:27 AM
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Default Re: Silent Thunder removal on newer FasTechs

The stock thru-hull tips that are in there dumping into the box are raw stainless and short, about 2-3 inches exposed. The back of the silent thunder "bucket" has rubber donuts that fit around these.

On Nort's 312, as many do, for appearances sake, the stock tips are replaced by a longer polished thru-hull tip, or in my case transom mount Corsa mufflers.

Some aftermarket tips have internal flappers, some don't. Run external rubber flappers regardless to assure no water ingestion.
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Old 12-11-2006, 08:37 AM
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Default Re: Silent Thunder removal on newer FasTechs

stock tips... short raw S/S with wieghted internal flapper
Attached Thumbnails Silent Thunder removal on newer FasTechs-tip.jpg   Silent Thunder removal on newer FasTechs-tip1.jpg  
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Old 12-11-2006, 08:42 AM
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Default Re: Silent Thunder removal on newer FasTechs

silent thunder "pan". you can see how the exhaust is routed together per side and split to exhaust outlets. Also note the rubber seals I spoke of, and the two L-brackets that support the middle of the box in conjunction with the bolt that thread into gunnel T-nuts at each back corner.
Put an O-ring and some 4200 on those center bolts and put 'em back in the transom after you take the pan off..
Attached Thumbnails Silent Thunder removal on newer FasTechs-stbox.jpg   Silent Thunder removal on newer FasTechs-stbox1.jpg   Silent Thunder removal on newer FasTechs-stbox2.jpg  

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Old 12-11-2006, 08:44 AM
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Default Re: Silent Thunder removal on newer FasTechs

Hope that helps Rob.
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Old 12-11-2006, 09:17 AM
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Default Re: Silent Thunder removal on newer FasTechs

No pics, but you've already seen them...I took my box off and just installed the rubber flappers to the stock tips. They are short and "hidden" under the platform so I couldn't see spending the money replacing something you can't see when in the water anyway. (and the rubber flapper will nearly cover the entire stock short tip also)
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Old 12-11-2006, 11:13 AM
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Default Re: Silent Thunder removal on newer FasTechs

Hey Rip,
Helping a guy with a 271 replace the seals on his box. Obviously, we need new "doughnut" seals but, is there also a seal where the box mates to the platform?

In your pics it looks like there was a seal or some adhesive on top, aft section of the box where it bolts-up to the platform.

Any seals/adhesive on the sides?

Thanks,
Bird
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Old 12-11-2006, 11:26 AM
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Default Re: Silent Thunder removal on newer FasTechs

Originally Posted by rhsj2006
Nice boat, Phantom, and thanks for the pics. I can't quite tell from the 2nd photo - Did you add mufflers or are those the factory tips with added flappers?

Added polished pipe tips, and rubber flappers. Mufflers? No way!


Don't have them now either.......

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Old 12-11-2006, 12:19 PM
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Default Re: Silent Thunder removal on newer FasTechs

Originally Posted by ThirdBird
Hey Rip,
Helping a guy with a 271 replace the seals on his box. Obviously, we need new "doughnut" seals but, is there also a seal where the box mates to the platform?

In your pics it looks like there was a seal or some adhesive on top, aft section of the box where it bolts-up to the platform.

Any seals/adhesive on the sides?

Thanks,
Bird
No, and No

just the donuts.
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Old 12-11-2006, 02:07 PM
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Default Re: Silent Thunder removal on newer FasTechs

Personally, I'm a fan of angle-cut tips....
Attached Thumbnails Silent Thunder removal on newer FasTechs-mufflersrr-medium-.jpg  
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Old 12-11-2006, 02:24 PM
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Default Re: Silent Thunder removal on newer FasTechs

Originally Posted by C_Spray
Personally, I'm a fan of angle-cut tips....

Me too! Sweet pic Chuck!
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