head bolt tightining pattern

[theboss88]

I'm putting my head back together and need to know the bolt pattern for the head bolts and the torque specs

 

[theboss88]

anyone??

 

[booostedGSX]

Your best bet would be to find a factory service manual. It will be super helpful later on.

 

[theboss88]

so no one knows this pattern
money is super tight and i just need to know this pattern for i can get my car back together

 

[GalantGreg]

Start at one corner, and hand tighten. Then go the opposite corner and do the same in an X pattern. Hand tightening. Then work your way to the middle, starting from the outside working your way in. Then get your torque wrench and tighten to 65-72 ft lbs using the same pattern. What I did was first tighnen to 65 ft lbs, and then retighten to 72 ft lbs.

 

[theboss88]

thanks

 

[GalantGreg]

No problem.

 

[My1GLaser]

I am sorry to say it but that is completely wrong. You never tighten any mating surface from the outside to the inside. You ALWAYS tighten from the center out. ABSOLUTELY ALWAYS. If you do it the other way then you run the risk of pulling warpage to the center.

Tighten like this.

8 6 1 3 9
10 4 2 5 7

I would hand tighten, then do 25, 50, 72. You need a larger distance between the torque values. 65-72 really won't move the bolt much, or at all, unless you have a Snap-on, but mine would barely distinguish 7 ft/lbs for a final torque difference. Oil the threads with SAE 30 and tap the bolt holes if possible.

The 72 ft/lbs sounds correct. I only have the 1g service manual, and mine is 80 lbs and the 2G bolts are 1mm smaller diameter, so they should be slightly less.

If you already finished the job, then loosen them all in the exact opposite order (10,9,8...) and do it again correctly. You will be fine if the motor wasn't started and heat cycled. You might be fine if you did it the other way, but I wouldn't run my car like that. A car with stock HP might be fine, but still...

 

[j-jamrod]

wrong again i show you ow is it

9 5 1 4 8
10 6 2 3 7
have to be done 3 steps first 25, second 50, third 80 pounds

 

[Mike1992]

wrong again i show you ow is it

9 5 1 4 8
10 6 2 3 7
have to be done 3 steps first 25, second 50, third 80 pounds

That sequence is wrong

My1gLaser has it correct according to my "mitsubishi manual"


Tighten like this.

8 6 1 3 9
10 4 2 5 7

 

[j-jamrod]

so who is right?? letme dig more on this tread

 

[92ts1]

My1GLaser is correct..

Shouldn't you ALREADY own a Chiltons manual? Or at least the factory repair manual? I have 3 of them incase one gets misplaced... Lol.

 

[1992awdlaser]

This could have easily been found with a quick search.

http://www.dsmtuners.com/forums/newbie-forum/289475-head-torquing.html
http://www.dsmtuners.com/forums/newbie-forum/289467-head-gasket.html

Look at my posts in those two threads. Notice I say those are that is the procedure for taking the head off. You will want to do the opposite for putting it on. So start at 10 and work your way down.

 

[GalantGreg]

I knew this would happen. The way I posted was straight from the way the service tech at Gillman Mitsubishi told me they do.

 

[1992awdlaser]

I knew this would happen. The way I posted was straight from the way the service tech at Gillman Mitsubishi told me they do.

Well, they are doing it wrong then. They described the way to take off the head.