Re: 1938 Super 8 1605 - adventures with a newbie

Posted by kevinpackard On 2019/12/29 23:00:16
Dave, that's kind of what I was thinking. Hopefully we can finish the machining soon. It's really the last major obstacle.

I have a couple other things I want to run by you guys to get some answers. First up is the timing chain cover. Apparently before the engine was torn down, something sheared off these bolts from the inside.

Here's the outside, showing the four small bolts around the opening for the crankshaft:
<img src="https://oryjpq.bn.files.1drv.com/y4mEbqMGlqaCt5cuwo4e0HGlaNZdOUnicMyFDrhaa81LeZZyQWlpkGWJKxRK_NBjsibKrhGsOTnQ3bWLYrb9sQykR7LAKxjua1tDO5KVRUVBOmVRqjgd09ERyRV1zivpTPZLM_TN72lJaAb0fNPQPqMolEe42rIc2iR8d0nfx-PkzpIF6mPsM8HcKt1KIIoOXJo6qP7y6iKwoNi_CH_AkdDiw?width=768&height=1024&cropmode=none" width="768" height="1024" />

On the inside the bolts are sheared off flush with the interior mounting face.
<img src="https://orydpq.bn.files.1drv.com/y4mkCwd2GBBfCK8EObzT2xLpSu5NdpvjFQZ7x4Pa9ButQ2T-p4t1ED0eaW6fhq1e4Klcbdn8ELK6V8Oa7Kx1p0eAioBEam7DMTj7DaMXETIDpCRXUF0XCUP2gRoRnEMfhxcNSDbNhrNWOOjuyjglDkwShZZwgrw6BOnBqHclOsijFZNks5ChxSYa834sdWtpUDVcG6V31IvB3dxwzHnndO4ww?width=768&height=1024&cropmode=none" width="768" height="1024" />

What could have caused this?

Also, we are not sure what is supposed to go between the timing gear and the cover. We have a spacer (maybe?) and I guess there is supposed to be some sort of seal there, but there is obviously something missing around it.
<img src="https://obykpq.bn.files.1drv.com/y4mhXP3AUhWJ2A0IoHXS4AZm3-YbipvdfrR6iSSoOdmxYyQAqRC3DY1pQeSzQd9ngMr1V-cn_KwFtSQP3pZrqhRPGC45ttMijkURsBHgX9nth9FcIElsNhptfzkK1ZAEo-QMpBUTCQA2ZS92V0XmHUV6kMuU6PvmLbdrudxfQeRJ-6UIYcJ-7rODTA2AoT4SvpvqWQQnH_MwiBfwmrt4r-qeA?width=768&height=1024&cropmode=none" width="768" height="1024" />

We threw a modern seal on it to test fit and it just doesn't seem right. Something is missing between the gear and the seal. And the spacer doesn't seem like it will engage the retaining pin/groove enough for it to have any sort of strength.
<img src="https://orygpq.bn.files.1drv.com/y4mbRC0SSAq0e43GylTxsNJWFQZOyWOeCjay0Nw3FYqJ3Sm8qGE5IjNyhMtrvy-KwG4oZNp0aQ-SPWaobhLQBoKn2dkKd74K6TwfBM-T4w5Tmy6GvIsYavgDLWVhvGqPbyaU1Ck9ebCSM565gmWfIw7fMpduWRwbjtayPFv8s_jBgE6r_1YypcpqKzbGcm2W2lOhRdYWBZo_tlT4B2VOlu4Ow?width=768&height=1024&cropmode=none" width="768" height="1024" />

What are we missing here?

-Kevin

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