Results 1 to 7 of 7
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12-15-2022, 07:03 PM #1
Raptor with Water in Exhaust Manifolds
Had a couple lazy / open O2 sensor codes thrown this season on one bank, but no real degradation in performance and she never ran warm. Finally got a chance to drop the boat off at the dealer to get some new sensors under warranty, but received a surprise when they found water in the exhaust manifolds and cats.
Supposedly they replaced both right and left bank manifolds / cats... they mentioned it was an issue with the casts and an uncommon failure. So I'm surprised that both sides bit the dust at the same time.
Are the manifolds jacketed with raw water cooling or would the water intrusion have to come from upstream via the exhaust?
I'm suspicious that something wasn't winterized properly the previous season... and also curious what other gremlins were created by running a season with cracked manifolds.Last edited by rhouse181; 12-15-2022 at 07:12 PM.
2020 Kaiyen
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12-15-2022, 09:41 PM #2
The manifolds are fed via raw water side.
Only way you would crack both from freezing is if the crossover hose wasn’t drained.
Sent from my iPhone using Tapatalk2021 Supra SA 400
2018 Supra SA 400 (SOLD)
Michigan
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12-16-2022, 12:18 AM #3
Did warranty cover it all? I would hope it did.
Sent from my SM-G781V using Tapatalk2021 Moomba Makai
Black Cherry Metal Flake & Fire Red
Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
Wet Sounds bow speakers & 10's on the Tower & ported sub
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12-16-2022, 10:44 AM #4
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12-16-2022, 11:06 PM #5
I know someone who had the cylinders fill with water while the boat was tied to the dock. Turns out he had left the boat tied to the dock with the stern facing the open water for an extended period with the ballast full. His boat was equipped with surf exhaust, which has no flapper to keep water from working its way up the exhaust system.Could this be related to what you’re seeing rhouse181?
Last edited by Tommy2slow; 12-16-2022 at 11:09 PM.
2020 Moomba Mojo
2008 Mastercraft Prostar 197 40th Anniversary
Owner Ness Lake Watersports
Wakemakers “Exact Fit” Bags + Lead = 4,700 ballast
Audio by Wetsounds, MTX, JL Audio, Clarion
15 X 13.00 ACME prop
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12-18-2022, 02:29 PM #62021 Moomba Makai
Black Cherry Metal Flake & Fire Red
Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
Wet Sounds bow speakers & 10's on the Tower & ported sub
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12-18-2022, 07:19 PM #7