295cc Head Torque Problems

brucef68 · 09-20-2013, 09:18 PM

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?

1989Marathon · 09-20-2013, 09:24 PM

How do you know they stretched?

brucef68 · 09-20-2013, 09:31 PM

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.

1989Marathon · 09-20-2013, 09:34 PM

Are these the head bolts?

brucef68 · 09-20-2013, 09:36 PM

Quote:

Originally Posted by 1989Marathon

Are these the head bolts?

Yes, they are the head bolts

1989Marathon · 09-20-2013, 09:44 PM

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.

brucef68 · 09-20-2013, 09:51 PM

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.

1989Marathon · 09-20-2013, 09:59 PM

16.6 ft/lb is a pretty light torque. I would definately check the wrench.

09-20-2013, 09:18 PM	#1
brucef68 Not Yet Wild Join Date: Sep 2013 Posts: 4	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?
brucef68 Not Yet Wild Join Date: Sep 2013 Posts: 4

09-20-2013, 09:24 PM	#2
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: 295cc Head Torque Problems How do you know they stretched?
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

09-20-2013, 09:31 PM	#3
brucef68 Not Yet Wild Join Date: Sep 2013 Posts: 4	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.
brucef68 Not Yet Wild Join Date: Sep 2013 Posts: 4

09-20-2013, 09:34 PM	#4
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: 295cc Head Torque Problems Are these the head bolts?
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

09-20-2013, 09:44 PM	#6
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	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.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

Today
BGW	Sponsored Links __________________ This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum

09-20-2013, 09:51 PM	#7
brucef68 Not Yet Wild Join Date: Sep 2013 Posts: 4	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.
brucef68 Not Yet Wild Join Date: Sep 2013 Posts: 4

09-20-2013, 09:59 PM	#8
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: 295cc Head Torque Problems 16.6 ft/lb is a pretty light torque. I would definately check the wrench.
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

Similar Threads
Thread	Forum
Are there any clearance issues 295cc Head on a 350cc Block	Gas EZGO
295cc Problems	Gas EZGO
Wanted: Robin (ezgo) 295cc cylinder head	Golf Carts and Parts
Head torque	Gas EZGO
295cc Head	Golf Carts and Parts