Need to replace head gasket and need the proper torque specs. Thank you.
Hi,
This should help you out.
Let me know if you need more information.
Thanks
Jason
SOURCE: head gasket replacement torque specs
Buy a Subaru tech and repair manual $34.95 for 72hrs use I believe it can be downloaded i think around 250MB.. Dave www.techinfo.subaru.com/html/index.jsp
SOURCE: Head Bolt Torque for a 2000 Grand Cherokee Laredo 4.0L
the torque is a 4 step process
1 torque all bolts to 22 ft/lbs
2 torque all bolts to 45 ft/lbs
3 recheck all bolts to 45 ft/lbs
4 torque bolts 1 thru 10 to 110 ft/lbs
bolt 11 to 100 ft/lbs
bolts 12 thru 14 to 110 ft/lbs
bolt #1 is the fourth bolt from the front on the passenger side....#2 is the fourth bolt on the drivers side then you continue in a clockwise order
SOURCE: replacement of a head gasket on 2.5 liter nissan altima 2002
frajogag: First off, be aware that these bolts are "torque to yield" bolts (streach bolts). What this means is that instead of torqueing the head bolts to a specific torque specification, they are torqued down to a set spec and then tightened by rotating the bolts a certain angle, like 90 degrees. and all of them are turned the same amount.
This means that the shanks of the bolts must be checked to make sure they are not too thin (or the bolt has already stretched beyond limits and is prone to snap if used)
Here is how you check the bolts. Measure the bolt using a micrometer, at the base, or within the first 13mm from the end where it threads in. Then go to about 10mm before the threads end heading toward the top of the bolt. There should not be more than a 0.23mm (.0091 inch) or less difference or the bolt should be discarded.
Torque the bolts down to 98.1Nm ( 72.ft lb)
Looking at the head from the side, so you are looking at the full length from side to side, I will number the head bolts in this fashion.
#1 & 2 are directly in front of you and in the center of the cylinder head crossing it width wise.
#3&4 are to the left of #1&2, / #5&6 are to the right of #1&2
#7&8 are to the left of #3&4 / #9$10 are to the right of #5&6
Now, you have the sequence.
After the initial pull, back off all the bolts in the same sequence and then retorque them to 36 Nm ( 28 ft lb)
Using a torque angle wrench or having the ability to accurately judge turning angles. Rotate (clockwise) to a 75 degree angle. do this to all the bolts using the sequence I had provided.
Rotate the bolts (clockwise) 75 degrees again on all bolts in the same sequence. The proceedure is complete!
SOURCE: head bolt torque specs for 2000 dodge neon 2.0 SOHC
I have the specs and diagrams. If you want me to send them to you, give me your email address. [email protected]
SOURCE: 94 mazda B3000 3.0L cylinder head torque specs
Step 1 torque to 59 ft pounds
2. Loosen one full turn
3. 37 ft pounds
4. 68 ft pounds
Use torque sequence below
Foot pounds (Final torque)
Note:
Torque sequence --------- | 6 2 3 7 | | 5 1 4 8 | --------- Step 1: torque in sequence to 33 Ft/Lbs Step 2: turn an additional 90 degrees Recheck final torque in sequence *** CAUTION ***engine uses Torque To Yield head bolts (TTY) thatpermanently stretch during the initial installation.New head bolts must be used when cylinder head isreplaced or re-installed to obtain proper torque.
Foot pounds (Final torque)
Note:
Torque sequence --------- | 8 4 1 5 | | 7 3 2 6 | front --------- of engine | 6 2 3 7 | | 5 1 4 8 | Step 1: torque to 40 Ft/Lbs --------- Step 2: turn an additional 90 degrees Recheck final torque in sequence *** CAUTION ***engine uses Torque To Yield head bolts (TTY) thatpermanently stretch during the initial installation.New head bolts must be used when cylinder head isreplaced or re-installed to obtain proper torque.
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