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09-20-2013, 09:18 PM | #1 |
Not Yet Wild
Join Date: Sep 2013
Posts: 4
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295cc Head Torque Problems
I have a 295cc Robin out of a 96 Workhorse. I torque the bolts to 16.6 ft/lb on the 1st pass and the bolts stretched. I ordered new bolts from ez-go and they are doing the same thing. Has anybody run into this before?
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09-20-2013, 09:24 PM | #2 |
Gone Wild
Join Date: Oct 2010
Posts: 6,730
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Re: 295cc Head Torque Problems
How do you know they stretched?
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09-20-2013, 09:31 PM | #3 |
Not Yet Wild
Join Date: Sep 2013
Posts: 4
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Re: 295cc Head Torque Problems
Because the main thing is they never seem to become tight, then when you remove the bolt and examine it the thread pattern is the same at the bottom but thread pitch increases as it gets closer to the head.
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09-20-2013, 09:34 PM | #4 |
Gone Wild
Join Date: Oct 2010
Posts: 6,730
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Re: 295cc Head Torque Problems
Are these the head bolts?
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09-20-2013, 09:36 PM | #5 |
Not Yet Wild
Join Date: Sep 2013
Posts: 4
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Re: 295cc Head Torque Problems
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09-20-2013, 09:44 PM | #6 |
Gone Wild
Join Date: Oct 2010
Posts: 6,730
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Re: 295cc Head Torque Problems
Have you used a pitch gage to check the threads?
It is hard to imagine a head bolt stretching at such a low torque. I would suspect that the torque wrench is not working correctly. |
09-20-2013, 09:51 PM | #7 |
Not Yet Wild
Join Date: Sep 2013
Posts: 4
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Re: 295cc Head Torque Problems
No pitch gauge but I do have a new M8 X 1.25 bolt and the threads match for maybe the 1st inch and then do not mesh after that. You can visibly see the difference in the thread pitch as it gets closer to the head of the bolt.
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09-20-2013, 09:59 PM | #8 |
Gone Wild
Join Date: Oct 2010
Posts: 6,730
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Re: 295cc Head Torque Problems
16.6 ft/lb is a pretty light torque. I would definately check the wrench.
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