Other Stuff > Tricks & Tips
Wots goin’ on here pls folks?
SumpMagnet:
any chance of picking up used parts?
If it was mine, I would want to throw it together for minimal cash just to see if it is worth the trouble. For what you want it to do, spending money on a rebore and new pistons
is the last thing I would want....but...unless you enjoy rowing...you want it to be reliable
ka-ja:
Is it possible to assemble the motor castings only and apply some water pressure to the cooling system and check for any leaks?
K2-K6:
Cracking would be my fear too, but it does show evidence of corrosion removed material around that section of the barrel compared to all the rest of both barrel circumference. Maybe that's what they responded too in trying to add material.
You can reface the top surface by double siding tape onto glass sheet some abrasive papaer, then use paraffin to lubricate while you "sand" the surface. Something like 180 grit for initial cut to see how it cleans up.
Piston, can you get rings for it? You can carefully clean out the ring groove with a flat needle file to get the old ring to check clearance before re-ringing to get it running and assessed. If you haven't got a needle file, then you can glue some abrasive paper to one side of a lolly stick to gently clean the ring lands.
Worthwhile trying if you can re ring, alloy wheel cleaner (usually contains sulphuric/hydrochloric acid or similar) to see if it'll clean the carbon tar from bore walls.
Not an easy way through it, but with it not working now the piston is scrap anyway. If you can at least get it going competently like this, then you'll have the surety to go for a rebore longer term.
That's a huge amount of blow by on that piston, and likely to be significant in poor running, but most probably caused by the "modification" originally.
K2-K6:
They usually suck in water and pass it through jacket, then straight out again.
After salt water they are usually purged with clean before storage, not sure if inland water ways would have the same need to clean.
Bryanj:
Have you seen the c**p floating in inland waterways?
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