I posted in your other thread already but here ya go again.If the ring land isn't deformed and the piston it's self looks good once you get it out I say run it.I've seen some pretty bad pistons come out of running engines.Smooth the damage as much as possible and take some pics of the piston for us to see.
If the ring land isn't deformed and the piston it's self looks good once you get it out I say run it.I've seen some pretty bad pistons come out of running engines.Smooth the damage as much as possible and take some pics of the piston for us to see.
my pistons have those too. I agree completely, smooth out the edges best you can without removing too much material and don't worry about it.sand it with a dremel if you have one?
I think you may find a hand file works well... it's a nice flat planar surface and the piston material is actually quite soft. About one minute each with a file on these bad boys cleaned em right up:All you want to do is clean off the material that's squished up... flat file makes it quick.
At TDC, the piston tops protrude above the block deck and so a file can be used. That being said, I sure wouldn't run that crank with JB weld to make up for the wear. I'd feel much better about welding up the wear and filing it back down to it's proper shape, but personally I'd opt to have it machined for the TDI sprocket. You've already witnessed the damage that results when it fails...Andrew
Borrowed photo:The one on the left is the TDi Sprocket. The crank can be machined so that the cutout is opposite the stock keyway. Unless a jig is made, then the machining require the crank to be removed which in turn requires either engine or transmission removal.Andrew
I'd certainly do some test welds beforehand. You'll want decent penetration on the crank and so have the heat turned up a bit. Again, test a few weld beforehand. Get a piece of thick scrap steel and grind off a corner, then build it up again. Did you get the gas setup with it or are you planning to use flux core wire? Andrew
There is a series of bolts around the perimeter of the aluminum seal carrier. Glad to hear you won't be doing your first welds on the end of a crankshaft. CO2 is just fine. I actually prefer it if I'm welding cast. It's also good for carbonating beer. :wink: :lol: Andrew