1979 Chevrolet Malibu 496-TH400-9" (cruiser). 1992 Chevrolet S10 355-700r4-7.625" (daily driver).
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238 Posts
The first half of the title is a widely recognized aphorism. In this hobby, striving for perfection can make good either better or worse. Compare the 2 outcomes. Is better really that much better than good? We all know that worse is really much worse than good. We all know that neither outcome will be perfection. The "madness" sets in and away we go looking for it anyway. The "acceptable" range for bearing or clutch pack clearance, endplay, end gaps, straight, flat, heavy, light, etc. Acceptable to whom? We obsess about leading zeros or decimal points in our measurements and think anyone only measuring to 1/1,000th of an inch or whole grams must build their cars with vise-grips and hammers. As a consequence of our desires for perfection, we are generally pleased with the outcome.
All too soon we realize that we never really left the "cult of imperfection." This is when the "madness" comes and maybe this time it doesn't go well. Our Eagle eyes spot what looks like a little sag in the paint on the trunk and think "I can take care of that. Just a quick, little...." A couple of hours later the trunk lid is on a sawhorse and you're trying to remember where your 50 grit DA sandpaper is, so you can get it all back to bare metal. Or we decide a bearing clearance is a tad tighter than we'd like. It was "within spec" just not within our specs. "Let's get this polished, it's not smooth enough anyway." The next thing you know, we're looking on Summit Racing's website for .001" undersized bearings. There's more, but I digress.
The second half of the title is dedicated to what I thought was a cool story. It was told to me by a retired Ford technician. He said in the 70's Ford had a recall on their 400 engine. They had a problem with the engine block cracking in the lifter valley side of the water jacket and contaminating the oil with coolant. I don't recall what models. Ford came up with a solution that kept the shops very busy. It was called a "bare block" repair. I think the "bare" block had cam bearings, core plugs and gallery plugs. They were instructed to transfer everything else out of the old block and into the new one. As most of you know, the coolant contaminated oil did what it does. He said nearly all of the bearings were largely void of babbitt and showing copper. The crankshaft journals made that washboard clicking sound if you lightly dragged a screwdriver along them. The cam, lifters, rockers, piston skirts, etc....all of it with obvious wear and galling marks. They were told to put all of that stuff into the new block. He said they had so many engines apart and so many vehicles waiting that they just put the first engine in the vehicle waiting the longest. They had no idea which engines went with which vehicles. It all went together and in they went. He said when they would start these engines for the first time they would all cringe at what was expected to be a disaster....but the disaster never happened. He said not one customer returned with a complaint in the time that followed. He said when he went to "Ford school" and talked to other technicians from other shops, they said the same thing. All of those engines, in all of those service departments and no one could recall a complaint.
I've thought about this story a few times while reading discussions on this forum. I see advice on this or that and do my best to give the advice I think would serve someone well. I never want to lead anyone in the wrong direction. I think of that story and some of the things I put together in my youth and I find it difficult to avoid telling someone to "just run it."
One thing worth mentioning is that they did follow the "cleanliness is next to Godliness" rule. That left me with the indelible idea that I could really get away with quite a bit if I needed to...as long as I kept things clean. I've never had it come back to haunt me either. Just like those guys in the 70's with their bare block repairs. Did bad really serve good better than perfect could have??? Hmmmm.
All too soon we realize that we never really left the "cult of imperfection." This is when the "madness" comes and maybe this time it doesn't go well. Our Eagle eyes spot what looks like a little sag in the paint on the trunk and think "I can take care of that. Just a quick, little...." A couple of hours later the trunk lid is on a sawhorse and you're trying to remember where your 50 grit DA sandpaper is, so you can get it all back to bare metal. Or we decide a bearing clearance is a tad tighter than we'd like. It was "within spec" just not within our specs. "Let's get this polished, it's not smooth enough anyway." The next thing you know, we're looking on Summit Racing's website for .001" undersized bearings. There's more, but I digress.
The second half of the title is dedicated to what I thought was a cool story. It was told to me by a retired Ford technician. He said in the 70's Ford had a recall on their 400 engine. They had a problem with the engine block cracking in the lifter valley side of the water jacket and contaminating the oil with coolant. I don't recall what models. Ford came up with a solution that kept the shops very busy. It was called a "bare block" repair. I think the "bare" block had cam bearings, core plugs and gallery plugs. They were instructed to transfer everything else out of the old block and into the new one. As most of you know, the coolant contaminated oil did what it does. He said nearly all of the bearings were largely void of babbitt and showing copper. The crankshaft journals made that washboard clicking sound if you lightly dragged a screwdriver along them. The cam, lifters, rockers, piston skirts, etc....all of it with obvious wear and galling marks. They were told to put all of that stuff into the new block. He said they had so many engines apart and so many vehicles waiting that they just put the first engine in the vehicle waiting the longest. They had no idea which engines went with which vehicles. It all went together and in they went. He said when they would start these engines for the first time they would all cringe at what was expected to be a disaster....but the disaster never happened. He said not one customer returned with a complaint in the time that followed. He said when he went to "Ford school" and talked to other technicians from other shops, they said the same thing. All of those engines, in all of those service departments and no one could recall a complaint.
I've thought about this story a few times while reading discussions on this forum. I see advice on this or that and do my best to give the advice I think would serve someone well. I never want to lead anyone in the wrong direction. I think of that story and some of the things I put together in my youth and I find it difficult to avoid telling someone to "just run it."
One thing worth mentioning is that they did follow the "cleanliness is next to Godliness" rule. That left me with the indelible idea that I could really get away with quite a bit if I needed to...as long as I kept things clean. I've never had it come back to haunt me either. Just like those guys in the 70's with their bare block repairs. Did bad really serve good better than perfect could have??? Hmmmm.