im getting a 2005 rxt with rod knocking

[killer454]

rod knocking how much fun is this project going to be in fixing,allready has a seadoo super charger installed cost was 1100.00.
its in nice shape
I allreade built a seadoo speedster 1995 runs great
2002 gp1200r rebuilding this now
2001 xlt 1200 got about 4 hours on this one runs great

now I found this 4-stroke and cant pass it up,never been on a 4-stroke ski yet

just looking for insite on the rebuild has anyone went through this yes

I have the seadoo engine alignment tool set already from when I did my boat this will work on this ski to right

any info please or advice don't hold back on me guys please

 

[Tytan]

Until you strip it down any diagnosis is a guess.

If it has a bad knock don't keep running it or you will be looking for a new block. Get a shop manual and follow it to the letter pay attention to the stretch bolts that are used if the manual says to replace them then do it. If you decide to rebuild I would replace the intake and exhaust valves, upgrade the flywheel bolts to the new BRP kit or use ARP bolts and use ARP head studs instead of the oem stretch bolts.

Good Luck.

 

[Sea Dood]

As Tytan says, you will not really know what you have until you totally disassemble it. Since it has a new supercharger, the best guess is that the SC lost the ceramic washers, and the person ran the ski without completely tearing down the engine after the washers broke. The dust and bits of broken ceramic eat up the bearings, causing the rod knock.

Please be aware that you might need a new block and crankshaft, as a spun main bearing would toast the block, and usually if you have a knocking rod, the crank is scored.

In it's current shape, it isn't worth more than maybe $1,000 to $1,500. Hope you aren't planning to pay more than that. You can easily drop $2,500 in parts to rebuild it right.