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locktite on head bolts ? yes no ?

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title says it all. the head bolts came off like they had locktite, but the threads didn't look like it. have my OEM head gaskets, ready to install..

just wondering if i should locktite them

NO thread lock on head bolts.

From the 97 Legacy FSM

2) Tighten cylinder head bolts.

(1) Apply a coat of engine oil to washers and bolt

threads.

(2) Tighten all bolts to 29 N⋅m (3.0 kg-m, 22 ft-lb) in

numerical sequence.

Then tighten all bolts to 69 N⋅m (7.0 kg-m, 51 ft-lb) in

numerical sequence.

(3) Back off all bolts by 180° first; back them off by 180°

again.

(4) Tighten bolts 1 and 2 to 34 N⋅m (3.5 kg-m, 25 ftlb).

(5) Tighten bolts 3 , 4 , 5 and 6 to 15 N⋅m (1.5 kg-m,

11 ft-lb).

(6) Tighten all bolts by 80 to 90° in numerical

sequence.

CAUTION:

Do not tighten bolts more than 90°.

45

SERVICE PROCEDURE 2-3b

4. Cylinder Head

 

Do you have the tightening sequence?

  • Author
NO thread lock on head bolts.

From the 97 Legacy FSM

 

 

Do you have the tightening sequence?

 

not trusting this haynes manual ...arrgg the pic is misleading

what i would say is "haynes is an introduction to automotive repair"

 

not the 'how to' manual for subarus.

 

it is an introduction to auto repairs for which ever vehicle you own, not the ultimate solution on how to.

 

way better than no manual at all , but no where near the info you really need.

For Correct information for your specific application, post the year and model of the car, and what engine you're working on (Year of the engine too if it isn't the original engine), and someone here can post the correct torque specs and tightening sequence for that particular engine. That way you get it right and don't have to do it all over again in a month. :eek:

  • Author
For Correct information for your specific application, post the year and model of the car, and what engine you're working on (Year of the engine too if it isn't the original engine), and someone here can post the correct torque specs and tightening sequence for that particular engine. That way you get it right and don't have to do it all over again in a month. :eek:

 

1998 forrester..EJ 25

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