420 head torque lbs?

[93AWDDSM]

i was wondering what the specific ft lbs of torque was for the head on a 97 eclipse rs 420a when swapping a new head gasket?

 

[riceburnerboy42]

Around 75-85

 

[Project2G]

Tighten the cylinder head bolts in the sequence shown in figure. Using the 4 step torque turn method, tighten according to the following values.


Tighten center fasteners 1 thru 6 to 33 Nm (24 ft. lbs.) . Then outer fasteners 7 thru 10 to 27 Nm (20 ft. lbs.) .
Tighten center fasteners 1 thru 6 to 67 Nm (48 ft. lbs.) . Then outer fasteners 7 thru 10 to 27 Nm (20 ft. lbs.) .
Tighten center fasteners 1 thru 6 to 67 Nm (48 ft. lbs.) . Then outer fasteners 7 thru 10 to 27 Nm (20 ft. lbs. ).

 

[barza21]

Tighten the cylinder head bolts in the sequence shown in figure. Using the 4 step torque turn method, tighten according to the following values.


Tighten center fasteners 1 thru 6 to 33 Nm (24 ft. lbs.) . Then outer fasteners 7 thru 10 to 27 Nm (20 ft. lbs.) .
Tighten center fasteners 1 thru 6 to 67 Nm (48 ft. lbs.) . Then outer fasteners 7 thru 10 to 27 Nm (20 ft. lbs.) .
Tighten center fasteners 1 thru 6 to 67 Nm (48 ft. lbs.) . Then outer fasteners 7 thru 10 to 27 Nm (20 ft. lbs. ).

I'm skeptical about those measurements.

 

[barza21]

Here are the correct measurements for a 420a engine. Enjoy.

Tighten the cylinder head bolts in the sequence shown
in the figure.
Using the 4 step torque turn method, tighten according
to the following values:
Step 1
Tighten center fasteners 1 thru 6 to 33 Nm (24
ftlbs.), then outer fasteners 7 thru 10 to 26 Nm
(20 fklbs.) .I
Step 2
Tighten center fasteners f thru 6, to 67. Nm (46
ftlbs.), then outer fasteners' 7 'tbru 'IO to 28 Nm
(20 ftlbs.).
, '..
..
Step 3
Tighten center fasteners 1 thru 6 to 67:km (46
ft.lbs.), then outer fasteners 7 thru '10 to %I 'Nm
(20 ftlbs.). '.
Step 4
Turn all fasteners 1 thru 10 l/4 turn (90 degrees).
Do not use a torque wrench for this step.

 

[cs82685]

I believe I just went to 85ftlbs on all 30, 60, 85. Based on recommendations from 2gnt members (this is also with arp head studs though)

 

[bullettdsm]

i was wondering what the specific ft lbs of torque was for the head on a 97 eclipse rs 420a when swapping a new head gasket?

As Barza said, there is no specific torque. Here are the numbers that I follow on my builds (unless of course, I use ARP's). This includes my 12.5 comp NA engine that I used stock head bolts on.

This is the most current update from AERA;

(oiled with lightweight oil and torqued in sequence)

Center's 25ft/lbs, corners (short bolts)20ft/lbs

Then Center's 50ft/lbs and corners 35ft/lbs

Then Center's again to 50 and corners to 35 again

Then tighten all bolts an additional 90 degrees

Take it to the bank

MB

 

[93AWDDSM]

thanks