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  #1  
Old 9th April 2019
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Default #2 head bolt issue

So I installed my 1250 kit and heads and I had one little issue that's been nagging at me all day today. On torqueing down the bolts I noticed the #2 bolt in the front did seem to always travel as far to click. On the final 40# it clicked immediately. Never moved from the 35# click.
Has me contemplating pulling it and checking it out. The head that is. Only thing tarnishing an otherwise perfect install.

Thoughts?
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  #2  
Old 9th April 2019
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On head bolts, if it didn't feel right, it probably ain't right.
Kinda sounds like hydro-locked the cap.
It needs to be stated somewhere to not oil the cap threads but rather lightly oil the studs.

edit:
If the cap bolt did hydrolock, it would effectively be at torque (according to the wrench) early.
It would most likely feel a little spongy while pulling also.
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Last edited by Hippysmack; 9th April 2019 at 22:45..
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My thoughts too and against my own advice to you I believe I lightly oiled the cap threads just at the end tho. I knew i shouldve listened to myself. But the manual pretty clearly says to oil.
I'm going to pull them all and start over. Easy enough
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All the threads were cleaned, inspected beforehand?
Try cleaning the caps / studs with brake cleaner.
Lightly oil the studs (lightly meaning as you would see it when purchased from a store).
The oil is to simply allow the cap to glide to torque without grabbing between the threads.
There is no other use for it in operation.

When you start getting up there in torque, watch the bolt heads.
When you relax the wrench, the bolt should not relax with it.
Else the bolt has been stretched and must be replaced.
Those long bolts flex much more in the middle than shorter ones do.

I did the same thing once.....
Won't do it again... on purpose anyway.
The bolt twisted on second to last pull and then twisted back when I relaxed the wrench.
That's the 'didn't feel right' that got me to looking more closely while pulling.
Had to replace it.

edit:
You may also feel like you hit intended torque with a clicker in a sequence but you can go back on that same value and it's a little looser.
You may find the nut will turn a little more at the same value setting on re-check.
You may have too much oil on the stud.
The nut may be tightening when it mingles with the oil, then loosening itself when it has time to squeegee the oil down the shaft... even while you're pulling.
That also feels funny.

Last edited by Hippysmack; 10th April 2019 at 00:14..
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They were thoroughly cleaned. Used a nylon bore brush too. Studs had a light coat of oil with a small brush then wiped off with a clean rag. What did me in was last second guessing and dipped the very corner of a rag in oil and worked it around the bottom half inch of the cap threads. I didn't notice any relaxing going on.
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Good to hear the bolts will hold.
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Old 12th April 2019
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After some more thought, and talking with Alex @ Hammer, I really don't think it's a hydrolock issue but most likely overshot 35 enough that the initial force of going to 40(final torque on the gasket set instructions) was more. Should be 42 but either way it should be fine.
So basically I could leave it, bump them all to 42, or back them all out and start over.
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If it was bothering me, I would just re do that one.
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Quote:
Originally Posted by hexnut View Post
If it was bothering me, I would just re do that one.
Being as anal as I am I'm going to redo both wth the 42 final.
Re-clean the b!+ch bolts too.
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If you do remove the heads you can re use the head gaskets. I have several times. Aaron says they re use them in the shop till the finish wears off. LOL
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