Is it ok to use my old headbolts when changing out my cylinder head? I've heard it both ways? Some say you have to get new head bolts on the GA16DE everytime you take the head off. Others say no, just clean up your old ones and oil them.
According my Haynes manual, you just run a die along threads and clean them up and reuse them. According to my FSM, there's no Circle X next to the headbolts in the exploded engine diagram, which according to the General Informatoin section, would indicate the bolts MUST be replaced every time you service them. I also can't find any other references in the FSM that says the bolts must be replaced.
Clean them real good and put them back in they'll do just fine... don't grease them and don't ignore the tightening sequence or torque values... I changed four head gaskets all on 4-cyl cars (not on GA16DE yet maybe cause there's perfection written on all of them lol) and they're all in excellent condition However I never swapped the bolts in between , get a large piece of cardboard and stick each bolt thru it following the pattern on the head ,put them back in the same hole.
It's always good to put fresh headbolts in because they tend to "grow" . you dont want the bolts bottoming out and the head not get torqued to the proper value, you could have negative results. No more then head bolts cost it wouldn't hurt to get new ones.There cheaper then a new head.
That is a very common thing to hear about the headbolts. The reason for this is because there are different types of headbolts. Some stretch and some do not. In this case as was pointed out you do not change them out. Hope this helps with the confusion.
That is a very common thing to hear about the headbolts. The reason for this is because there are different types of headbolts. Some stretch and some do not. In this case as was pointed out you do not change them out. Hope this helps with the confusion.
Since I have had head bolts that were stretched when removing them from the car (not Ga16) it might be good practice to check them for necking or stretching. This only takes a minute and might save you some grief later.
I would not recommend using a threading die as this can make scratches and metal filaments. If they are visually damaged to that extent then replace them. Yes I agree follow the FSM...
Good luck….
However I never swapped the bolts in between , get a large piece of cardboard and stick each bolt thru it following the pattern on the head ,put them back in the same hole.
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