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YOUR RESEARCHhead bolt sealants
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Use then removed they go in the bin
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There is no sealant or threadlocker required on the cylinder head bolts, but make sure you buy new bolts , they are torque to yeald bolts and once used then removed they go in the bin!
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Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
Leading evidence: 'Use then removed they go in the bin' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Set angle either' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Set angle either
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Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
Tighten then you must go back through all the bolts
No successful repair reported for this finding.
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Reported fixes
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Read evidence and context
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!!
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
The bigger question is whether any leaks acure between the lifter cradle and the head,(which uses no gasket or sealer) or the crankshaft carrier and cases (which uses no gasket or sealer).
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
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Prepping to pull the bank 1 head on my 996. I've seen various references for sealants to be used under the heads of the headbolts and I'm trying to figure out if the Loctite I have on hand is applicable.
So..
1. What thread locker should I use on the threads of the head bolts, or should I not? There's nothing specified in the workshop manual. I have some blue and red loctite on hand (numbers aren't handy right now.) I've seen references to green Loctite in build pictures. Should I order Loctite 270?
2. Would the same green Loctite work under the heads of the head bolts? Or would some sort of Loctite or Permatex flange sealant be more suitable? Again, nothing in the workshop manual for sealants here.
Thanks,
Bob
Bob
There is no sealant or threadlocker required on the cylinder head bolts, but make sure you buy new bolts , they are torque to yeald bolts and once used then removed they go in the bin!
On tightening the new bolts , there is a torque value and set sequence of tightening then you must go back through all the bolts tightening by a set angle either using an angle gauge or a torque wrench with an angle setting on it aswel as torque settings, usually the more expensive ones!! Get a copy of the porsche workshop manual on disk, look on here, there is a recent thread on the topic ok
I have the same question on sealant under the bolt heads, I know it has been recommended. Separate from thread locker which I haven't heard recommended.
My neighbor just gave me a shiny new Snap On digital torque wrench that does angles. Its pretty sweet!
I normally use Hylomar on the aircraft engines I've overhauled and will use that under the heads of the head bolts.
No thread locker should be used on the head bolt threads. Just clean and lightly oiled. While I have seen the reference of using a sealer under the head bolt heads, the factory does not specify this.
While a couple of head bolt holes are used as passages for oil to the top end, IF they were to leak it would be only a small oil volume loss.
The bigger question is whether any leaks acure between the lifter cradle and the head,(which uses no gasket or sealer) or the crankshaft carrier and cases (which uses no gasket or sealer). Both of these areas have a large surface area and the potential for large volume leaks are there.I have never seen anyone mention sealing these areas, but have often wondered if leaks here could be the cause of some engines starving for oil on corners even on the street or street tires on track day. Large volume internal leaks could cause the volume of oil in the sump to become low due to the oil not returning fast enough.
There is no mention of sealing these areas in the Porsche Engine Class P10W. Maybe someone who has been to FSI engine class can chime in if there is any mention there. On my personal M96 engines I do very carefully seal these areas.
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