The 133,333 mile engine rebuild thread
#271
It says clearly and directly that "they are not keyed". From this statement you can extrapolate that the cam sprocket is a press/interference fit (like the main sprocket)... This has also been mentioned in several if not myriad threads over the years. I'd think a rudimentary search would turn up relevant results. Good luck PS - get your IMS Sprocket pinned! It's a small price to pay while you're in there...
#272
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It says clearly and directly that "they are not keyed". From this statement you can extrapolate that the cam sprocket is a press/interference fit (like the main sprocket)... This has also been mentioned in several if not myriad threads over the years. I'd think a rudimentary search would turn up relevant results. Good luck PS - get your IMS Sprocket pinned! It's a small price to pay while you're in there...
If you have a thread to share where this is clearly described, I would appreciate the information. Regarding the search function at this site - have you used it? Did it provide satisfactory results?
#273
The main sprocket is not keyed. Why would I assume the cam sprockets would not be keyed, or otherwise indexed. Is it not possible for there to be a feature on the main sprocket to engage and locate the rear cam sprocket?
If you have a thread to share where this is clearly described, I would appreciate the information. Regarding the search function at this site - have you used it? Did it provide satisfactory results?
If you have a thread to share where this is clearly described, I would appreciate the information. Regarding the search function at this site - have you used it? Did it provide satisfactory results?
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dporto (03-02-2020)
#274
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Hey there Team Harco, let me clear up the mystery. None of the gears are keyed, they are assembled on a fixture orienting the teeth on the IMS tube with a slip fit/light press fit, then a thicker sleeve is pressed into the inside of the tube thereby "swedging" ( expanding) the tube to lock the gears.
Please excuse my ignorance. I like fact based and documented evidence to clear up ambiguities. These ambiguities may only exist in my mind. Those that have been there, and know these things, have been extremely helpful. I have great appreciation for all of you. You really have no idea.
Alright enough of that - let's see some parts.
Out with the old...
It got the super-soaker treatment.
#275
Excellent! The explanation I have been looking for.
Please excuse my ignorance. I like fact based and documented evidence to clear up ambiguities. These ambiguities may only exist in my mind. Those that have been there, and know these things, have been extremely helpful. I have great appreciation for all of you. You really have no idea.
Alright enough of that - let's see some parts.
Out with the old...
.
Please excuse my ignorance. I like fact based and documented evidence to clear up ambiguities. These ambiguities may only exist in my mind. Those that have been there, and know these things, have been extremely helpful. I have great appreciation for all of you. You really have no idea.
Alright enough of that - let's see some parts.
Out with the old...
.
Scott , inspect that closely, or cut it open to see exactly where the port enters, my instructions for sealing the Atmosphere port in the channell will not apply to those old "53" parts.
Last edited by Porschetech3; 03-02-2020 at 10:59 PM.
#276
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Wait !!! Look at that !!! An old "53" part number AOS. Notice where the Atmosphere port is on that(notch), different from where they have been putting them for years/decades. I'm wondering how many more of these "Old ***" AOS's are still out there and haven't failed yet..
Scott , inspect that closely, or cut it open to see exactly where the port enters, my instructions for sealing the Atmosphere port in the channell will not apply to those old "53" parts.
Scott , inspect that closely, or cut it open to see exactly where the port enters, my instructions for sealing the Atmosphere port in the channell will not apply to those old "53" parts.
#278
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On the old part? The one that failed?
The mystery is where it's located on the new part. I have this to go on:
First step is to seal off the atmosphere port on the AOS, seal inside of this channel (yellow) and seal around the seam at Red area.
Matching that description and the arrows on my part may require some powerful glasses. My first look didn't provide me with confidence that I had found the right places to seal it. Once I figure it out, I'll post photos and details.
The mystery is where it's located on the new part. I have this to go on:
First step is to seal off the atmosphere port on the AOS, seal inside of this channel (yellow) and seal around the seam at Red area.
Matching that description and the arrows on my part may require some powerful glasses. My first look didn't provide me with confidence that I had found the right places to seal it. Once I figure it out, I'll post photos and details.
#279
Hey Doc - I'll very likely cut it open. I'll document that, if it will be of any value to your project. Or, I could send it to you as well. The new part has a "55" suffix. I am still looking at it to see where the atmospheric port is located (it must be very small). Once I find it, I'll probably use silver silicone sealer to seal the port. A good contrasting color should aid in visually identifying where to seal it, in case others want to know.
Yes, the notch at 6 o-clock should indicate the port is right behind there in that crevice.
On the old part? The one that failed?
The mystery is where it's located on the new part. I have this to go on:
First step is to seal off the atmosphere port on the AOS, seal inside of this channel (yellow) and seal around the seam at Red area.
Matching that description and the arrows on my part may require some powerful glasses. My first look didn't provide me with confidence that I had found the right places to seal it. Once I figure it out, I'll post photos and details.
The mystery is where it's located on the new part. I have this to go on:
First step is to seal off the atmosphere port on the AOS, seal inside of this channel (yellow) and seal around the seam at Red area.
Matching that description and the arrows on my part may require some powerful glasses. My first look didn't provide me with confidence that I had found the right places to seal it. Once I figure it out, I'll post photos and details.
#280
Hey Doc - I'll very likely cut it open. I'll document that, if it will be of any value to your project. Or, I could send it to you as well. The new part has a "55" suffix. I am still looking at it to see where the atmospheric port is located (it must be very small). Once I find it, I'll probably use silver silicone sealer to seal the port. A good contrasting color should aid in visually identifying where to seal it, in case others want to know.
#281
The fact that your camera was manufactured in this century will be a yuge help too. Maybe the inventor of the UAOS will take note.
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Porschetech3 (03-03-2020)
#282
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I was preoccupied with something else for much of my free-time today. Got a couple of boxes delivered from Hamheads.
New guides and springs. Lots of clean-up and resurfacing.
They look as good as new.
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#283
Is there such a thing as a simple point and shoot camera that takes good pictures and doesn't cost a left nut?
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#285
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Then I got my current digital SLR (Nikon). I started with a Pentax SLR film camera many years ago. It was fully manual. You had to set shutter speed, aperture and focus. The cost of film and processing led to improved skills. Now with digital photography, film is real cheap. Skills aren't as critical either.
I'll try to investigate some ideas. I haven't kept up with what's out there, in years.