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| Interesting breakage..... https://slantsix.org/forum/viewtopic.php?t=56701 |
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| Author: | emsvitil [ Thu Dec 11, 2014 5:39 pm ] |
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The max torque spec on a 7/16 - 14 grade 8 bolt is 52 ftlbs lubricated 59 ftlbs, zinc plated and dry / or threadlocker 70 ftlbs, plain and dry |
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| Author: | emsvitil [ Thu Dec 11, 2014 11:47 pm ] |
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Lookup Belleville Spring Lock Washers McMaster.com Would the 10mm one work if the hole was slightly enlarged? |
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| Author: | emsvitil [ Thu Dec 11, 2014 11:54 pm ] |
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This is interesting......... http://www.moparchat.com/forums/showthread.php?t=104883 |
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| Author: | Doctor Dodge [ Fri Dec 12, 2014 7:25 am ] |
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I bet there is something out there that we could use... What I am looking for is a hardened spring washer with a larger OD... The factory one is 1.5 inches OD and that size does not completely cover the dowel pin. ( I want to cover up a cam advance shim / off-set bushing) A 1 3/4 washer OD would do the trick. DD |
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| Author: | Charrlie_S [ Fri Dec 12, 2014 12:37 pm ] |
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Quote:
That is the one I called the dealer about. If you look, the date of that post was 7 years ago.
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| Author: | DadTruck [ Fri Dec 12, 2014 5:34 pm ] |
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lots of good info in this post, typical of .org when I redid the 83 motor, I remember the cam bolt washer having a bow to it,, now I know why. |
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| Author: | emsvitil [ Sat Dec 13, 2014 1:11 am ] |
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Quote: I bet there is something out there that we could use...
Why not 2 washers............What I am looking for is a hardened spring washer with a larger OD... The factory one is 1.5 inches OD and that size does not completely cover the dowel pin. ( I want to cover up a cam advance shim / off-set bushing) A 1 3/4 washer OD would do the trick. DD A large diameter flat one to cover up the dowel pin, then an available curved one to act as the lock washer. Or...... Aren't some of the front suspension washers large and curved.... |
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| Author: | sixinthehead [ Sat Dec 13, 2014 5:02 am ] |
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A cupped washer does not a spring make. The metal needs to be treated as well. Kinda like making a coil spring out of a coat hanger. |
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| Author: | Doctor Dodge [ Sat Dec 13, 2014 8:07 am ] |
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Agreed... My using a 2 washer system with an "unknown" larger flat washer, (that looked like hardened material) combined with a common split washer, led-to my last failure. As with all engineering challenges, I am sure there are load, tension and yield calculations that could tell us the amount of force needed to prevent loosening but that may-be "over-thinking" it a bit. Not to say that a two washer system will not work... you just have to be careful that both elements (washers) used are strong (hard) enough to maintain the locking tension needed. DD |
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| Author: | Dart270 [ Sat Dec 13, 2014 1:05 pm ] |
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I would avoid a lock washer as those can "pooch out" if very tight, and then lose tension. Personally, I would think a thick fender washer with a hardened (and thick) smaller washer would work. IIRC, I have always used the factory washer, though. I run mine up to at least 55 ft-lbs, maybe 60, with copious threadlocker and a few times I've used JB Weld when I didn't have any threadlocker on hand. Lou |
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| Author: | Charrlie_S [ Sat Dec 13, 2014 3:47 pm ] |
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I posted this question over at FABO, in the small block section. This is the response I got. http://www.jegs.com/i/Mopar-Performance ... 8/10002/-1 http://www.hughesengines.com/Index/prod ... rtid=11253 http://chucker54.stores.yahoo.net/caatha.html I wonder if i will clear the slant six timing cover. |
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| Author: | nm9stheham [ Sat Dec 13, 2014 4:39 pm ] |
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Quote: I bet there is something out there that we could use... If the concern is that the bushing will walk out of the sprocket hole, I had the same thoughts today. I ended up using Mr Gasket offset bushings with an OD of .407" (13/32") . I drilled the sprocket with a 3/8" hole and then used a very shallow angle reamer to open up the hole from the back side so a taper would be in the hole. I then filed the bushing with a matching taper for part of it's depth. So the bushing can't get ouf the sprocket hole (well, not without getting all beat to heck first!). A little blue locktite is in there for good measure; I probably have the taper a bit looser than it should be; probalbly has .001' or a bit more of slop (hand filed bushing taper). What I am looking for is a hardened spring washer with a larger OD... The factory one is 1.5 inches OD and that size does not completely cover the dowel pin. ( I want to cover up a cam advance shim / off-set bushing) A 1 3/4 washer OD would do the trick. DD The only thing about the offset bushing is that you have to get it oriented so the offset axis is along a tangent to the diameter. If the offset axis is rotated off at an angle to the tangent, it wants to push the sprocket off-center and cock it a bit, and would bind up the chain on one side. But some fiddling around got it aligned nicely. |
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| Author: | '67 Dart 270 [ Sat Dec 13, 2014 5:58 pm ] |
| Post subject: | McMaster |
Belleville washers: http://www.mcmaster.com/#standard-washers/=v0gib4 Grade 9 bolts: http://www.mcmaster.com/#standard-cap-screws/=v0gj32 fyi, brian |
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| Author: | '67 Dart 270 [ Sat Dec 13, 2014 6:02 pm ] |
| Post subject: | flanged ones |
Here are the flanged high strength bolts: http://www.mcmaster.com/#standard-cap-screws/=v0gklo |
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| Author: | emsvitil [ Sat Dec 13, 2014 6:24 pm ] |
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FYI Stacking Belleville washers this way ((((( ups the spring rate of the stack so if you're flatting the washer, use more like above. this way ()()() lowers the spring rate of the stack (if you want a low torque connection) |
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