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Cylinder head torquing


rangersteve

rangersteve

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I'm in the process of putting my truck back together after replacing the cylinder head gaskets. Just finished torquing all the bolts and I over torqued one on the final torque. (torque angle)

Specs says to torque to 80-85 degrees and I went to 108 deg on one of the bolts. I backed it off to within spec but now I'm trying to decide if I should throw it all back together or replace the bolt while I have access to it?

Aaaarrrrgggg.
 


Mark_88

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Are you using torque to yield (newer style) or the older style head bolts?

If newer, I'd say remove the one you over torqued and replace that...the rest should be fine if you are keeping them to spec.
 
rangersteve

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Well it's a 91 4.0 OHV. I'm thinking its the torque to yield style. The torqueing process as laid out in my haynes manual

<a data-flickr-embed="true" href="https://www.flickr.com/photos/133066210@N05/20258263153/in/dateposted-public/" title="373"><img src="https://farm1.staticflickr.com/585/20258263153_637a98cc5c.jpg" width="500" height="375" alt="373"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>

<a data-flickr-embed="true" href="https://www.flickr.com/photos/133066210@N05/20691221400/in/dateposted-public/" title="374"><img src="https://farm1.staticflickr.com/731/20691221400_7ce2978615.jpg" width="375" height="500" alt="374"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>
 
adsm08

adsm08

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Those will be TTY bolts.
 
rangersteve

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Ya I phoned Ford, ordered a replacement to be safe. Just going to replace the one that I overdid


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