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| Dropped my new eng / tranny -help on repair http://forums.ctzcc.com/viewtopic.php?f=4&t=6197 |
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| Author: | Kathy & Rick [ Sat Jul 30, 2011 9:39 pm ] |
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The more I study that picture of the xmsn with the dented-in casing, the more perplexed I get.  -- I can't figure out why it would DENT
IN like that, and not CHIP OR BREAK OFF a chunk. Alternatively,
why would it not SPLIT the casing instead? 
Stuff that only professional wrenches and metallurgists would know, but certainly not me! All Z Best,..............................Kathy & Rick |
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| Author: | Frank T [ Sat Jul 30, 2011 10:26 pm ] |
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Dropped just hard enough to smush an unsupported aluminum donut, but not hard enough to snap bolts or break a case full of steel rods and gears? If he had dropped any part of his YAK50 from the same height, it never would have flown again!
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| Author: | tjyak50 [ Sun Jul 31, 2011 12:18 pm ] |
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Drop the Yak and we'll be needing some concrete repair... (is the old joke about well built Russian airplanes). The engine fall was more of a slip and strike than a full out drop from 3 feet. The failing strap slowed it down on the way to the ground. Still a quantum act of buffoonery. My goal building this engine was to learn and have fun. I made some mistakes along the way but everything can be fixed. On this leak... I think I am going to try to seal externally. Maybe I can force some goop in the leak or draw it in with a slight vacuum on the breather. Then start sorting out the carbs which is a whole other project.. |
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| Author: | Frank T [ Sun Jul 31, 2011 12:37 pm ] |
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I only ever learn from mistakes. I never learn anything from success, except blind luck. |
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| Author: | tjyak50 [ Mon Aug 01, 2011 9:21 pm ] | ||
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I am not proud of this.
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| Author: | Frank T [ Mon Aug 01, 2011 9:34 pm ] |
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Wellllll, paint over it and nobody will notice........ 
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| Author: | tjyak50 [ Mon Aug 01, 2011 9:52 pm ] |
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I plugged the Case and Cam vents and stuffed a shop-vac hose in the oil fill hole making a vacuum. Then let nature draw the goop into the void just a little. Lessons learned: 1) Don't use the lifting strap bolted to the head for anything. Lift by the block. Cast iron vs. aluminum. 2) Lapping head / block / must check and lap fit of the front cover (duh). 3) NEVER put a thermostat in a new engine (missed that day of class). |
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| Author: | Frank T [ Mon Aug 01, 2011 10:23 pm ] |
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That actually sounds like a pretty clever idea. Now, how do you intend to clean this up? |
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| Author: | tjyak50 [ Mon Aug 01, 2011 10:34 pm ] |
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Frank T wrote: That actually sounds like a pretty clever idea. Now, how do you intend to clean this up?
I'll just delete all these posts next week, why? TJ |
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| Author: | Frank T [ Tue Aug 02, 2011 7:53 am ] |
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| Author: | theZman [ Tue Aug 02, 2011 7:57 am ] |
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never leave a dark chocolate candy bar on a hot engine.....
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| Author: | Paul [ Thu Aug 04, 2011 7:50 am ] |
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Just got back in town and reading this, from what it looks like you had the same tail shaft, both have one ear from what I can tell in the pic. well you have it done, and I was going to say, yes easy job, as long as shift rods are lined up. I just did this myself, used silcon for the sealer. My only suggestion would be to put a NEW bearing collar in the tail shaft end. If there is any play you will have vibration issues, and eventually the new seal will leak. I changed mine for a btter bearing, but eventually will put one in the older tail shaft, then reinstall the original tail shaft. Of course would like to find a 81-83 trans....hint. Did you install a new front cover seal? I glue the gasket to the cover with 3M black weather adheasive, then a thin layer of silicon on the other side, and a little on the threads of the bolts, and always silicon in any corner. Then eavenly torqued down in pattern. BTW, looks awesome. |
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| Author: | tjyak50 [ Tue Aug 16, 2011 5:02 pm ] |
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I swapped the tailcones and shifter linkage and reverse protection thing. Works great, no leaks. My other tranny is an earlier style 5 speed and I think my machine shop can repair the cracks in the housing and then I can rebuild that other tranny and have a spare. ALthought it won't be a "Close Ratio" 1983 style... TJ |
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| Author: | Frank T [ Tue Aug 16, 2011 9:52 pm ] |
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Now all you have to hope for is that the reverse light switch actually works! |
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