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What are the torque specs for 2008 valve cover bolts?

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Old May 5, 2014 | 09:15 PM
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Letsclique's Avatar
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What are the torque specs for 2008 valve cover bolts?

What are the torque specs in Foot Pounds, for a 2008 Fit valve cover?

Thanks!
 
Old May 5, 2014 | 09:30 PM
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This is per the manual.

Tighten the bolts in three steps. In the final step tighten all bolts, in sequence, 12 N•m (1.2 kgf•m, 8.8 lbf•ft).
 
Old May 5, 2014 | 09:41 PM
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Originally Posted by painterguy
This is per the manual.

Tighten the bolts in three steps. In the final step tighten all bolts, in sequence, 12 N•m (1.2 kgf•m, 8.8 lbf•ft).
Thanks! Do you know how to explain this in layman's terms. Thanks for your help.
 
Old May 5, 2014 | 09:44 PM
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They don't want you to warp the plastic valve cover.

So start from the center out in a criss cross pattern. Just don't over tighten the bolts initially.
 
Old May 5, 2014 | 09:56 PM
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Originally Posted by painterguy
They don't want you to warp the plastic valve cover.

So start from the center out in a criss cross pattern. Just don't over tighten the bolts initially.
One more thing, is that 8.8 foot pounds I should tighten all the bolts to?
 
Old May 5, 2014 | 10:25 PM
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Originally Posted by Letsclique
One more thing, is that 8.8 foot pounds I should tighten all the bolts to?
Yes, that's for all bolts.
 
Old May 5, 2014 | 11:57 PM
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Originally Posted by ikutoisahobo
Yes, that's for all bolts.
Okay. Maybe I am asking torque specs for the wrong cover.

I need the torque spec for the Cylinder Head Cover (Or whatever the aluminum cover is called that you take off to do a valve lash adjustment).

Sorry, for any confusion...ugh!
 
Old May 6, 2014 | 12:36 AM
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8.8 foot pounds in three steps! Just find it amusing such a low torque spec should be applied in three steps.

I'm not saying it shouldn't be done or even that there isn't a good reason to do it. Im just amused by three steps for such a low spec in ft lbs.

EDIT:

I guess I should elaborate.

Torque wrenches are not as accurate at either end of their range. Most torque wrenches that can achieve 8.8 ft lbs cant be set to below 5 ft lbs. How would you then torque it in three steps using that wrench? What spec would you torque it to in the first two steps?

I just think the spec should have been supplied by Honda in inch lbs so the tech wont have to multiple the spec by 12 to convert it. Honda is usually very thorough with instructions but I feel they could have done a little better here with explaining the method and the spec units.

So lets say we torque in three steps starting with 3 ft lbs, then 6 ft lbs and then finally to 8.8 ft lbs.

Here's how to convert between ft and inch lbs. Its the same as converting feet to inches on a ruler.

Ft lbs x 12 = Inch lbs

Inch lbs / 12 = Ft lbs

So using that math: In inch lbs that would be 36 inch lbs, then 72 inch lbs and then 105.6 inch lbs.

Im sure most professional techs could snug the bolts on the first pass, then a quick second pass for an even feel of tightness and a final pass with a torque wrench to 8.8 ft lbs without over tightening on the second pass. That would only be possible by learning what 8.8 ft lbs feels like from spending our career torquing everything you should be torquing. To someone who hasn't torqued a lot of bolts to such a low spec, it would be easy to pass that spec on the first pass.

I would use a 1/4" ratchet and hold the ratchet near the head with just two fingers. My hand wouldn't grip the ratchet but my thumb and index finger would be over the ratchet head and just turn it similar to the way you turn your ignition key. A tight grip on the handle would remove the delicate feel of how much you are actually turning the bolt since your muscles would be gripping the ratchet too tightly.

As technical and spec driven as I am, I have not worked with many techs over the years that believe in torquing valve covers. I do believe in it but what I'm saying is most techs will just use a feel and never torque it to spec. Some of those gaskets will leak or sweat a little oil or may even crack or warp the cover. Only the most highly trained techs will understand the materials they are using and why they should use a torque spec.
 

Last edited by 2010FitSport; May 6, 2014 at 01:05 AM.
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