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Post by ramblinman on Feb 8, 2014 17:06:58 GMT -5
the other day when i was struggling with the rocker arm i put it back together in a hurry with the adjustment nut under the arm. neglected to dbl check TDC. well i put the cam on TDC but i guess the piston rotated at some point. it is about 165 degrees off, surprised it was running at all. it was running rough but i assumed it was because the exhaust valve wasn't sealed completely. finally had time to work on it again today. figured i would just put the old head on until i could lap the valve on the new head. that is when i discovered the real problem. still going to pull this head to fix the valve anyway. backyard mechanic strikes again... learning the hardway.  |
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Post by spandi on Feb 8, 2014 17:09:00 GMT -5
The same thing always happens like this when I try to rush the work, Is this what they mean by "Speed Kills?
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Post by tvnacman on Feb 8, 2014 19:53:01 GMT -5
You only do that once .
John
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Post by JerryScript on Feb 8, 2014 21:27:44 GMT -5
We've all been there. The last time I did my valves, I also did a friend's at the same time. I set his piston to TDC, but did not set mine. First I adjusted his, then I started to adjust mine, but I kept loosening and loosening the exhaust vavle, and it kept coming out. For a moment I was thinking my valves were borked, but then I noticed the cam gear with no holes visible, just one of many "duh" moments in my pursuit of mechanical excellence!  |
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Post by ramblinman on Feb 9, 2014 6:32:56 GMT -5
broke off one of the exhaust studs. i'm guessing you shouldn't use a pair of vise grips on the studs.  i think i may have crushed it a little then possibly over torqued. idk, maybe they were just old and brittle. going to figure out how to tighten the new ones without vise grips. don't want this to happen again. |
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Sophomore Rider
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Posts: 211
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Post by f4milytime on Feb 9, 2014 12:29:25 GMT -5
broke off one of the exhaust studs. i'm guessing you shouldn't use a pair of vise grips on the studs. i think i may have crushed it a little then possibly over torqued. idk, maybe they were just old and brittle. going to figure out how to tighten the new ones without vise grips. don't want this to happen again. I add a drop of loctite to each of them, helps keep them in, but you probably knew that already. LOL Aloha |
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Post by millsc on Feb 9, 2014 12:54:54 GMT -5
No need to over tighten the studs they tighten up when you put the exhaust nut on anyways.
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Post by tvnacman on Feb 9, 2014 13:22:27 GMT -5
I use bolts now , don't have to worry about loosing the nuts .
John
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Post by JerryScript on Feb 10, 2014 0:14:20 GMT -5
Easiest way to set all-thread lugs is to put two screws on it. Tighten them against each other, and then the all-thread itself into it's hole. Then use an open end wrench to hold one of the nuts, and any kind of wrench to hold the other and break them apart without loosening the all-thread lug.
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Post by cyborg on Feb 10, 2014 23:35:57 GMT -5
maddening,,,,i think i've had cranks move 4-5 times on builds,,makes me nuttier than i already am,,,,
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