Tony_SS
NAXJA Supporting Vendor
- Location
- Washington MO
Do I need to use this perfect seal or anything like that? Or can I mount this fel pro dry? Its top of the line fel pro.. perma torque sd
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head gasket
- Thread starter Tony_SS
- Start date
Runnin'OnEmpty
NAXJA Forum User
- Location
- Southeast USA
Good choice on the severe duty FelPro.
It's installed dry with no sealer.
It's installed dry with no sealer.
WB9YZU
NAXJA Forum User
- Location
- Madison, WI
And head bolts are installed Dry also. No oil, no anti-seize...nothing.
Monster Mopar
NAXJA Forum User
- Location
- Moses Lake, WA
I'm not sure if the xj calls for any sealer on the head bolts (some engines do, check your service manual) If the manual doesn't call for any sealer you want to put a light coat of oil on the threads and the shoulder of the bolt to get a more accurate torque reading.
JWheeler
NAXJA Forum User
- Location
- Washington
Install the gasket dry. No sealer on the bolts.
Kingkong0192
NAXJA Forum User
- Location
- New Milford, CT
Install the gasket dry.
looking at you head from the driverside...here is the tightening sequence (start at 1 and work your way out)
12 8 4 1 5 9 13
11 7 3 2 6 10 14
step 1...tighten all bolts to 22ft/lbs
step 2....tighten all bolts to 45 ft/lbs
step 3....recheck all bolts at 45ft/lbs
step 4...tighten all bolts except #11 to 110ft/lbs, then tighten #11 to 100ft/lbs...
Dont forget on #11 to put thread sealant on it cause it goes in a water jacket.
looking at you head from the driverside...here is the tightening sequence (start at 1 and work your way out)
12 8 4 1 5 9 13
11 7 3 2 6 10 14
step 1...tighten all bolts to 22ft/lbs
step 2....tighten all bolts to 45 ft/lbs
step 3....recheck all bolts at 45ft/lbs
step 4...tighten all bolts except #11 to 110ft/lbs, then tighten #11 to 100ft/lbs...
Dont forget on #11 to put thread sealant on it cause it goes in a water jacket.
cruiser54
NAXJA Forum User
- Location
- Prescott, Az
Oh yes. #11 bolt gets sealer on the threads and has a different torque value.
JWheeler
NAXJA Forum User
- Location
- Washington
Tony_SS
NAXJA Supporting Vendor
- Location
- Washington MO
Mission accomplished this morning.. thanks!
CobraMarty
NAXJA Forum User
- Location
- PM me any questions
It's wierd that my head gasket let go/lifted at that #11 bolt, cylinder into the water jacket. I wonder why that #11 needs to be torqued different/less? It only sees water at the tip and is next to cylinder water jackets just like the other bolts.
joe_peters
NAXJA Forum User
- Location
- Grants Pass, OryGun
It gets less torque because of the void at the water jacket--less surface area in contact between the bolt and head, less torque required. If you tried to torque it to the same specs as the other bolts your end result would likely be stripping the head/bolt.
CobraMarty
NAXJA Forum User
- Location
- PM me any questions
That makes sense. I should have tried to measure the # threads in that #11 bolt hole and compared it to the others. ?Less threads, glad I torqued it to spec. and not 'whats 10pounds extra all around'.
