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Do you think I might need new valve guides? |
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wittsend 
AMC Nut 
Joined: Apr/15/2020 Location: California Status: Offline Points: 425 |
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 Posted: Oct/20/2020 at 5:36pm |
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Right, and the Lifter should be taking an overwhelming majority of the side load of the cam ramp, not the valve. Which leads me to ask, how are the lifter bores???
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'63 American Hardtop
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tomj
AMC Addicted
Joined: Jan/27/2010 Location: earth Status: Offline Points: 7544 |
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Posted: Oct/20/2020 at 10:53pm |
I hate it when people ask reasonable questions! Lol, I just wrote to the guy who gave me the stuff. I'll report back. |
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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Ollie
AMC Addicted
Joined: Sep/17/2012 Location: Brandon, MS Status: Offline Points: 2803 |
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Posted: Oct/21/2020 at 8:12am |
You rolled me outa the chair on that one !!!!  Having AMC Fun, Ollie
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1966 American Convertible -- "The Rambler"..SOLD
1974 Postal Jeep -- "Rapid Delivery"...SOLD 1969 Rambler 220 post car--"Road Warrior" 1989 Jeep Comanche Pioneer, 4.0L, auto, 2wd |
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tomj
AMC Addicted
Joined: Jan/27/2010 Location: earth Status: Offline Points: 7544 |
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Posted: Oct/22/2020 at 12:57am |
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OK, there will likely be no answer. What I received was a collection of parts from as many as three motors. They are AMC flathead valve guides, AMC flathead valves, so they did wear that way, but there's no way a stock setup did that. No engine I've ever seen doesnt have some sort of contained cam follower.
The machine shop cleaning the block and head said the block has seven cracks. Lol. So tomorrow I go pick up my new coffee table base. BACK TO THE DRAWING BOARD. I'll find another flathead candidate and try again... |
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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bigbad69
Supporter of TheAMCForum 
Joined: Jul/02/2007 Location: Ottawa, Ont. Status: Offline Points: 6668 |
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Posted: Oct/23/2020 at 5:55pm |
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Seven cracks, blower, what could go wrong?
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69 Javelin SST BBO 390 T10
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farna
Supporter of TheAMCForum
Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19676 |
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Posted: Oct/24/2020 at 9:44am |
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That thing was probably run hot SEVERAL times... and I mean HOT!! When I was a kid I ran my first one so hot once that it wouldn't run going down hill in gear (straight drive). I was planning on rebuilding it and had a spare, so it didn't matter... then. Ran hot due to a leak in the radiator, not engine issue. I went back the next day with a friend to tow it home and the darn thing cranked right up!! Drove it another 2-3 weeks before pulling the engine, and rebuilding that block. That was in 1980. The guides were worn but knurled instead of replaced. Had about 180K on the engine. The only possible explanation I have for the guides is that they were worn, knurled, then wore through that. Knurling just raises material inside the guide in a cross hatch way, so no more than 50% of the material is raised and contacting the valve stem. Wouldn't last as long as a solid guide, but was effective enough back in the day when guides and the machine work to replace them were more costly. Some old machine shops (like the one I used) were still doing that as late as 1980, obviously, at least on older motors. So those guides could have been knurled at one (or more?) points and the knurling worn out.
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Frank Swygert
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wittsend
AMC Nut
Joined: Apr/15/2020 Location: California Status: Offline Points: 425 |
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Posted: Oct/24/2020 at 1:10pm |
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I just used a knurling tool a few months back. As stated it raises the metal in a fashion similar to the way a tap cuts threads. However, what I thought was a cutting reamer turned out to be a straight fluted, non-cutting tool that basically forced the projected peaks of the thread to the desired size.
For someone like myself who "refurbishes" rather than rebuilds my old cars it is a cost saving method. I mean I only drive to Cars & Coffee twice a month and I have six old cars. That is four trips per car a year, 10 miles round trip (40 miles total). Throw in 60 miles for incidental driving and any of my car sees maybe 100 miles a year. I just can't see spending $100's of dollar that I will never get a return on my investment. You take a beater classic to an event and people say, "It will look great when you get it done." But do you try and make the car to the best of your ability and it gets nit-picked apart.
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'63 American Hardtop
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tomj
AMC Addicted
Joined: Jan/27/2010 Location: earth Status: Offline Points: 7544 |
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Posted: Oct/24/2020 at 9:45pm |
I know, right?! IT WILL BE FINE.
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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wittsend wrote: