Thread: 90% convinced i have a collapsed piston skirt

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Jerry, I've done the plug wire removal (the MSD ignition can really light up your day if not careful) and while inconclusive, it's no. 5 and possibly 6 as well(LH side for the Chebbie guys).

Parts - not going to buy anything but the gaskets until sure of what's inside and already have. My concern is if I did over rev and subsequently collapsed that skirt(or two), how many more will just be waiting to go the same way.

As far as broken parts - no metal seen yet in the oil, but might just send off a sample as you suggest, Roger.

What the real gist of my OP is has to do with those Silvolite pistons and if they are decent replacements if necessary, knowing that I will never race it - though will give it some occasional 'exercise'.

For right now - gonna drive it until it gets cold, clatter and all. If it breaks - sighhhhh - that will be the next bridge to cross with this engine.

Originally Posted by IC2

Jerry, I've done the plug wire removal (the MSD ignition can really light up your day if not careful) and while inconclusive, it's no. 5 and possibly 6 as well(LH side for the Chebbie guys).

Parts - not going to buy anything but the gaskets until sure of what's inside and already have. My concern is if I did over rev and subsequently collapsed that skirt(or two), how many more will just be waiting to go the same way.

As far as broken parts - no metal seen yet in the oil, but might just send off a sample as you suggest, Roger.

What the real gist of my OP is has to do with those Silvolite pistons and if they are decent replacements if necessary, knowing that I will never race it - though will give it some occasional 'exercise'.

For right now - gonna drive it until it gets cold, clatter and all. If it breaks - sighhhhh - that will be the next bridge to cross with this engine.

nothing wrong with silvolites or speedpros (now) or mahle. has a one small one man shop i use over 12 set of just cast pistons a year . they work fine if you fit them . has for your bore if its on the big side they do not like loose .but you can hone the block and get a off size piston s made .i done this on the 4.600 bore stuff . but what is cheaper then that is to go with a 2618 forged piston it will put up with more piston to wall then a 390 alloy. but you need to know were your at know of size .if the wist pin started to freeze up it will take the skirt off in this case piston to wall has nothing to do with busting a skirt