ForgedCrank
Well-Known Member
- Joined
- May 30, 2024
- Messages
- 185
- City
- Indianapolis, IN
- Vehicle Year
- 1994
- Engine
- 2.3 (4 Cylinder)
- Transmission
- Manual
Hi guys, for my latest stupid question, I'm hoping to get some reassurances regarding head bolts.
Due to an overheat, I am swapping the head. I got paranoid (its a thing I do) and measured the original head bolts and there was some variation in 3 of them that I didn't like, so I decided to just get new ones. What the heck, 25 bucks is cheap enough insurance. I got a new set, Fel-Pro (ES 72137).
So my latest questions are....
The Fel-Pro instruction sheet calls for 2 stage torque, with lubricant applied to bolts and flange faces. 1) to 51ft lb then 2) add 90-100 degrees.
The Ford shop manual calls for basically the same (51 + 80-100 degrees), but does not call for lubricant anywhere that I can find.
Various online searches are conflicting, so I'm going to the trusted source of experience here. Should I use lubricant on the bolts or no?
Next question is, I was under the impression that some of the head bolts breach the coolant passages and require sealer. I don't remember where I heard that, it was just stuck in my memory. However, the Ford shop manual has no mention of sealant for installing the head bolts. I see some forum posts saying it is not needed, and other online stuff saying SOME bolts need it, but nothing that specifies which bolts they are, so I'm skeptical. I don't see any sealant on the originals either, but I can't be sure it's not down in the thread bore (I've yet to chase them out).
Am I correct in assuming none of the head bolts require sealant?
I'm still waiting for the head so I'm just trying to get everything together ahead of time.
And as always, you guys are great, I appreciate any input you are willing to share.
Due to an overheat, I am swapping the head. I got paranoid (its a thing I do) and measured the original head bolts and there was some variation in 3 of them that I didn't like, so I decided to just get new ones. What the heck, 25 bucks is cheap enough insurance. I got a new set, Fel-Pro (ES 72137).
So my latest questions are....
The Fel-Pro instruction sheet calls for 2 stage torque, with lubricant applied to bolts and flange faces. 1) to 51ft lb then 2) add 90-100 degrees.
The Ford shop manual calls for basically the same (51 + 80-100 degrees), but does not call for lubricant anywhere that I can find.
Various online searches are conflicting, so I'm going to the trusted source of experience here. Should I use lubricant on the bolts or no?
Next question is, I was under the impression that some of the head bolts breach the coolant passages and require sealer. I don't remember where I heard that, it was just stuck in my memory. However, the Ford shop manual has no mention of sealant for installing the head bolts. I see some forum posts saying it is not needed, and other online stuff saying SOME bolts need it, but nothing that specifies which bolts they are, so I'm skeptical. I don't see any sealant on the originals either, but I can't be sure it's not down in the thread bore (I've yet to chase them out).
Am I correct in assuming none of the head bolts require sealant?
I'm still waiting for the head so I'm just trying to get everything together ahead of time.
And as always, you guys are great, I appreciate any input you are willing to share.