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How does the cooling water flow through the exhaust (direction)? 787cc 110hp

Started by UNYboater, Apr 19 2012 10:11 PM

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#1 UNYboater

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5 posts

Water:1000 Islands, NY
Year of DOO:1999
Model of DOO:Challenger 1800
Engine in DOO:Twin 110hp Rotax (800)

Posted 19 April 2012 - 10:11 PM

I am getting a freeze plug tig welded but some of the old crumbling aluminum plug fell into the Exhaust PIPE-HEAD (part # 274000161). It will not shake out nor will air blow it out. I'm going to try water flow tomorrow but if I miss any, which way does it flow? Will it end up somewhere that could plug-up the block or an equally bad place?
Thanks.

1999 SeaDoo Challenger 1800 : twin 787 110HP Rotax
2003 SeaRay Sundancer DA280 : twin Mercruiser 220HP V6's

#2 BigWayne

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117 posts

Water:Old Hickory Lake
Year of DOO:2012
Model of DOO:Challenger 180 SE
Engine in DOO:Rotax 4-TEC SCIC

Posted 14 November 2014 - 11:52 PM

This should answer your question. I was able to pull this one page right out of the shop manual.

I believe for a small amount, you can get access to all of the pertinent jetboat manuals from this site. Some are available for free, but you'll have to do some searching to find them.