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Post by jeffwho on Aug 28, 2023 14:02:53 GMT -5
Gentlemen!
I got a wild hair and started looking for an animated video on how an L134 motor works. I found a few pretty good ones and this fuzzy concept is much clearer to me now, at least conceptually. I want one that is 100% on the L134. I have manuals and charts and explanations, and helpful advice from pros on here of course, but a video showing each step in the process of the cylinder and valves, what's actually happening under the head, what vacuum gauge reading should be at what time, etc., would be helpful. Despite what Bobo might tell you, I *can* read, but pictures and video would help clarify things in my decidedly (obviously) non-mechanic brain.
Anyone seen one? Anyone have the skills to make one?
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Post by Scoutpilot on Aug 28, 2023 15:02:01 GMT -5
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Post by jeffwho on Aug 29, 2023 6:10:43 GMT -5
That's actually really good information, more than some of the others I'd found. I think it might be a mighty ask to find exactly what I'm looking for - Moosey already rightly bashed me for being a mope. I'll have to picture an overhead cam downside up, and as the same thing. I think I will just move on to sorting out which valves go where after a slight mishap in the garage. Pro tip: if an assembled motor starts to tip over, don't try to catch it!
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Post by jeffwho on Sept 5, 2023 6:13:19 GMT -5
I still have my pal Hajji, the chain-drive from Lee and a newly-purchased "ran when last ran" motor, Mater, which is gear drive. I need to understand how to set up the fibre gear on the cam initially because after I stripped this thing to clean it thoroughly, then cleaned and reinstalled the valves I moved the flywheel wanting to check that the valves moved freely. Of course they didn't move at all since the cam was disconnected, so IF the motor was even close to properly timed, it's out of whack now. So, back to my original question about the animated video because I want to install the fibre gear correctly and not just slap it together and be miles off on timing. Here is what I need confirmed:
I should have the #1 cylinder at the top of the block (TDC) AFTER #1 cylinder inlet valve has just closed, then install the gear, correct? I know that I can't necessarily trust the timing marks on the flywheel since it could very well have been installed incorrectly, so I want to start with what I can verify.
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Lee
Full Professor
Vagabond Jeeper
Posts: 705
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Post by Lee on Sept 5, 2023 8:15:00 GMT -5
Here is what your looking for Jeff, if the two dots line up it’s perfect, unless of coarse you have no key in your camshaft☝️ then you have an Oilleaker special 😂  Lee😉 |
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Post by jeffwho on Sept 5, 2023 10:35:40 GMT -5
I fear it's the latter, no distinguishing marks. Nothing's easy here in the Lowlands!
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Lee
Full Professor
Vagabond Jeeper
Posts: 705
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Post by Lee on Sept 5, 2023 23:38:38 GMT -5
I fear it's the latter, no distinguishing marks. Nothing's easy here in the Lowlands! There are dots on your gears, get the looking glass out and find them, sometimes they are faded but they are there☝️ Lee😉 |
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Post by jeffwho on Sept 6, 2023 9:55:52 GMT -5
Thing about this bloody motor being across town is I can't just go look easily. I've also been learning more stuff, so I think I understand that the #1 should be top and both valves should be closed to make it TDC at compression, not exhaust (which is where the valves are now). If I was smarter I'd have photos, but believe it or not I think I am getting there.
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Post by brucew on Sept 6, 2023 16:32:04 GMT -5
If you can’t find a mark on the cam gear and have to guess, there is a way to check your valve timing. It is in the Service Manual For Universal Jeep Vehicles, paragraph D-99, on page 51. It’s also covered in the Owner’s Operation and Care Manual. This will verify whether or not you guessed the right tooth, assuming the woodruff key is in place. 😁😬
BW ll
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Lee
Full Professor
Vagabond Jeeper
Posts: 705
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Post by Lee on Sept 6, 2023 17:03:23 GMT -5
As Bruce mentioned, the key is very important ☝️
Lee😉
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oilleaker1
Full Professor
Full Professor
Has Jeep Disease
Posts: 2,022
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Post by oilleaker1 on Sept 6, 2023 17:03:35 GMT -5
Ouch, ohh, keyless in SD.
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Post by brucew on Sept 6, 2023 17:31:53 GMT -5
You do have a service manual, don’t you?
BW
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Post by jeffwho on Sept 7, 2023 6:06:46 GMT -5
Morning guys, I went over to have a look at the motor since it was my son's turn to feed the goats. There is a mark on the crankshaft gear (a little 0) but no discernible mark on the camshaft fiber gear. I fiddled with it and found that the IGN mark on the flywheel shows up in the window with #2/#3 at top of the block instead of #1/#4. What's really hanging me up here is that I don't know the correct valves positions to rotate the cam before making any final decision because I don't want to be pulling the fibre gear off again. I've watched a bunch of videos, but most are rebuilds and all seem to have existing timing marks. I can just imagine the conversation my grandad and dad are having "up there" watching me piss about with tools like I have a clue what they do.  Bruce I have a PDF version of the service manual I will look at, should probably have one I can root through in the garage. |
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Lee
Full Professor
Vagabond Jeeper
Posts: 705
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Post by Lee on Sept 7, 2023 8:04:18 GMT -5
Rock auto sells the service manual also☝️
Lee😉
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Post by Scoutpilot on Sept 7, 2023 11:11:24 GMT -5
I'm not an engine rebuilder. My question is, is it possible to install the fiber gear inside-out, thus hiding the mark?
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