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Possible to replace a cracked #4 piston in situ? 200

What you are asking is entirely doable. Just make sure that you get the correct used piston, A, B, C, D etc. Are you going to reuse the existing rings or are you going to run new ones. Part of cross hatching the cylinder walls is to aid in breaking in the rings and some folks will tell you that it is absolutely critical. Back in the day when people were frying their turbos cars all the time we had a guy that would come out and bore and hone a cylinder for you right there in the car. If you had a hole where there was metal transfer he would machine it up right then and there it the dealership parking lot, cool deal indeed. I imagine if you could transfer the rings without damaging them then you could run the old ones but you run the risk of stressing one of them and having it break down the road. Your other option is to stuff new rings in it on the old cross hatch or buy a hone and hone it yourself. I have done this before too and had it turn out ok, but it is alot of work as well. The last car that I did something like this on blew it's head gasket so hard that it hydraulicked one cylinder and bent a rod. I bought a #3 rod from the bone yard, stuffed it in just like you are thinking with that piston and it has worked choice for the past 6 years.

Good luck,
Mark






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