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One of Betty's cylinder heads and exhaust manifolds.
You know how you can get fuel injector/carb cleaners to clean out your engine's carbon deposits? Yeah, as you can see, they don't work. Instead, they just turned the inside of my combustion chambers, piston crowns and plugs red. But not take the carbon off; that has to be physically scraped off.
Yeah, and when Dave tried heating the mani bolts, the bolt heads just broke off, thus necessitating taking the cylinder heads off. The bolt holes were precision-cast, so the old bolts would need to be precision-drilled out of the heads before new ones could be installed.
You know how you can get fuel injector/carb cleaners to clean out your engine's carbon deposits? Yeah, as you can see, they don't work. Instead, they just turned the inside of my combustion chambers, piston crowns and plugs red. But not take the carbon off; that has to be physically scraped off.
Yeah, and when Dave tried heating the mani bolts, the bolt heads just broke off, thus necessitating taking the cylinder heads off. The bolt holes were precision-cast, so the old bolts would need to be precision-drilled out of the heads before new ones could be installed.
Category Photography / All
Species Unspecified / Any
Size 960 x 720px
File Size 81.1 kB
Thanks! When I see the mess that used to be my car's engine, somewhere in the back of my mind there's that worry that Dave can get everything put back together again, but I just as soon remind myself that my friend is the doctor and a professional. I have faith in him.
A '78 Camaro, eh? Nice!
Heh... I saw the old camshaft - at least two of the lobes were damned-near flat! It was actually pretty interesting. Some of the lobes were worn to nibs, others looked okay. It seemed to be like the rest of the engine - some parts were worn more than others.
Regardless, given how smooth and even the engine ran before I took her over to Dave's, we were pretty well astounded to learn just how worn the engine was once Dave was able to look deep into the guts of the thing. He figured there was no way it should have ran as well as it did!
In spite of my best efforts to only use name-brand motor oil and other fluids, I think the damage may have been done early in Betty's life (and your's, maybe, too). I'm told the oils of the day weren't anywhere near the quality of those today. In the '70s, motor oil contained paraffin wax to add more luberosity, and the compounds that were added to oil tended to bond with that wax and get caught in the oil filter. So, not only did you lose a lot of the stuff that was supposed to make oil more slippery, you also know the thing about wax - it's a solid until it's heated enough. So, for the first few minutes of operation, your engine isn't really being lubed well enough. And lack of lube = friction and wear.
I gotta hand it to you; you're braver than I am at wanting to replace your cam. I would never trust myself enough, considering my repair jobs don't tend to turn out well the first time around...
Heh... I saw the old camshaft - at least two of the lobes were damned-near flat! It was actually pretty interesting. Some of the lobes were worn to nibs, others looked okay. It seemed to be like the rest of the engine - some parts were worn more than others.
Regardless, given how smooth and even the engine ran before I took her over to Dave's, we were pretty well astounded to learn just how worn the engine was once Dave was able to look deep into the guts of the thing. He figured there was no way it should have ran as well as it did!
In spite of my best efforts to only use name-brand motor oil and other fluids, I think the damage may have been done early in Betty's life (and your's, maybe, too). I'm told the oils of the day weren't anywhere near the quality of those today. In the '70s, motor oil contained paraffin wax to add more luberosity, and the compounds that were added to oil tended to bond with that wax and get caught in the oil filter. So, not only did you lose a lot of the stuff that was supposed to make oil more slippery, you also know the thing about wax - it's a solid until it's heated enough. So, for the first few minutes of operation, your engine isn't really being lubed well enough. And lack of lube = friction and wear.
I gotta hand it to you; you're braver than I am at wanting to replace your cam. I would never trust myself enough, considering my repair jobs don't tend to turn out well the first time around...
Wow! I didn't know that! But since today's cars don't have flat tappet motors, the EPA has reduced the zinc or(ZDDP) levels in the oil for emissions reasons, which doesn't provide a good layer of protection between the lifter and the lobe so I have to buy special oils like valvoline vr1 racing oil which has sufficient zinc in it to protect the cam
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