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Post by btinsc on Jul 27, 2018 20:06:22 GMT -5
I know this is a carb site and I have been trying to join the 3a site but I'm not having any luck there yet. If I'm out of line let me know, please.
We finally are home after a four month tour as campground host at a FS campground in NC where I found my long searched for flat fender jeep.
Tomorrow I am going to do a valve adjustment. Never done one on a flat head but have been reading up on various methods folks use. My question is - after doing the tear down to the valve tappets, starting with the #1 cylinder ( I will remove the spark plugs to make it easier to rotate the engine), in order to get the tappet on the heel of the cam why can't I just rotate the engine, using the fan blade, until the gap is at its greatest opening? If it's .016 great, if not adjust to .016. Then go to the next valve, then to the next cylinder.
Tell me why this won't work, you don't have to be kind, just accurate. lol
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Deleted
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Post by Deleted on Jul 27, 2018 20:24:18 GMT -5
You can do it however you like, Oilleaker on here has a system called the magic 9 or some like phrase!.. Remove your plugs to ease engine turning, start at the front and work to the back, when an exhaust valve is all the way open, adjust the mating intake valve as it will be closed, and vise versa. This takes time but is very simple, perhaps Oilleaker will chime in and offer his opinion Lee
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Post by btinsc on Jul 27, 2018 20:45:18 GMT -5
That's what I'm thinking about Lee. I have read about the nine procedure but I'm afraid I might get lost and forget where I am. Will wait until I gain more experience.
I have built many refrigeration compressors, small to large tonnage recip's and centrifugal compressors. But they don't have a valve system such as the automotive engines. This is a learning curve for me and I luv every minute of it. Even with its quirks.
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Deleted
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Post by Deleted on Jul 27, 2018 21:39:08 GMT -5
I've worked on heavy equipment for over 30 years, it seems each engine manufacturer has some speedy way to set the valves, I find most confusing and do just as I told you, yes it may take a few more turns of the crankshaft, but I know right where I'm at, and it works, LOL... After you get through the first cylinder, you'll have it figured out, were here to help
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athawk11
Full Professor
Full Professor
Posts: 298
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Post by athawk11 on Jul 27, 2018 21:40:35 GMT -5
You'll be surprised at how easy the Magic 9 technique will be when you get going on it. That said, I write down the 8 valves on paper and check them off after adjusted. If you miss one, just rotate the engine until you get back to the valve you need to adjust. I also go through it twice to make sure they're all good.
We are a nervous group at the 3A Page. We were getting hit pretty hard by computer bots, so when joining, your request goes to one of the admins. He then knows you're a real person and grants you access. If that admin is away from email, (on vacation or something) it can take a few days to get access. Don't give up. The 3A Page is fairly quiet compared to some other sites, but there are some really good folks there. Smart, talented and helpful.
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Post by btinsc on Jul 27, 2018 21:44:47 GMT -5
thanks athawk11, I was afraid I had been "black-balled".
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Post by brucew on Jul 27, 2018 21:53:57 GMT -5
Nine, shmine. Too much math for no reason. Put cylinder #1 at TDC on the compression stroke, adjust both #1 valves. Turn the crankshaft 1/2 turn clockwise, adjust cylinder #3. Turn 1/2 turn, adjust #4. Turn 1/2 turn more, adjust #2, you're done. B-dubya
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oilleaker1
Full Professor
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Has Jeep Disease
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Post by oilleaker1 on Jul 28, 2018 6:21:17 GMT -5
Yep , Bruce's method works fine if you are sure you are on TDC for each cylinder. The Magic 9, or magic 13 (6 cylinder) works on in line engines, but not V 8's. I rotate the engine clockwise standing in front of the Jeep looking rearwards. Either with the fan blade or the crank pulley nut. Watch the lifters. Whatever lifter is all the way up or raised to it's peak, You count from the front of the engine back to it. Then 9 minus whatever lifter is up = the one you adjust. So, If # 6 is up, 9 - 6 = 3. Adjust # 3. The adjustable part of the lifter where the feeler gauge slides can wear and have slight ridges. the valve stem can fit down inside them. That can throw off your feeler gauge readings. Be aware of this. Like Hawky, I write down the one i adjusted and keep track. If you have say #2 left, you can just figure that # 7 valve needs to be all the way up in order to adjust #2. 9 - 7 = 2. Easy peasy. If you are having a hard time getting to the valves, some guys will pull the LF fender and sit in a chair with a cold beer and magnetic light. Radio on, air conditioner or heater blowing on you, might as well be comfortable. The gasket on the side cover is a pain. I usually high tack cement it to the cover, let dry a bit, and grease the side that touches the engine. That way next time it comes off and can be re-used. Lee usually has a crew of dancing girls from Hooters come over for extra entertainment.
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Post by btinsc on Jul 28, 2018 7:39:38 GMT -5
Thanks for all the info and tips guys. Now it's time to get dirty. If the adjusting points are worn or pitted what do you do then? Replace the parts I would guess, or do a little "kentucky-windage".
Debbie, my navigator (because women are never wrong), says she will bring me the cold beers but there ain't going to be no dancing girls in my shed. lol
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Post by grumpy on Jul 28, 2018 12:48:29 GMT -5
This is all way too confusing. I knew there is a reason I don’t adjust nuthin. I just drive, when it quits or worse l just haul it to the next event or get together and whine. Someone always gets tired of listening to it and helps repair it. In all seriousness either of these will work find what’s easiest for you.
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Post by btinsc on Jul 28, 2018 21:00:57 GMT -5
Hey guys I got'er done. Test run seems to be a little more responsive, probably my imagination. The valve setting were real close, most were within .001 or .002 high, probably not worth messing with but I wanted to get it done and get it right. Now on to the next project.
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Post by m38mike on Jul 29, 2018 5:48:53 GMT -5
Goodonya for tackling this task. Most Jeep owners have no idea how to do this. And now you know that the valves are set right for the near future. It didn't sound like you were far out before, but you didn't know for sure. Now you do. So Goodonya!!
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