Yeah, and I like a nut driver for the bolts. Mike's method is OK too. The
torque is in some inch-pounds.
Earle
"Will Honea" <whonea@[EMAIL PROTECTED]
> wrote in message
news:ec4be$48120539$10829@[EMAIL PROTECTED]
> With a thick layer of RTV, you can split the seal with added pressure
> because that stuff has little tolerance for cru****ng - it splits and
> crumbles. I find that a thin coat over cork will take the re-torque (as
> long as it's not ridiculous) as the RTV is more of a gap filler/adhesive
> than an actual gasket and the combo acts more like plain cork than RTV.
I
> use the film-over-cork as much for the release properties on removal as
> for
> the seal properties. That immediate second (and even third) torque
round
> you use is a key part of getting an even seat - even the metal covers
have
> a lot of warp over that long span.
>
> Mike Romain wrote:
>
>> I don't understand why folks would go and break the seal the RTV made
by
>> 're-torquing' the bolts after it has set.
>>
>> When the oil hits the gasket after the RTV has set, it expands the
cork.
>> This has the effect of 're-torquing' the bolts.
>>
>> On plain cork gaskets, a re-torque can be needed sometimes, but if you
>> have to do this on a RTV seal, the seal has failed and you are trying
to
>> do a compression seal.
>>
>> Now I 'do' do a second torque pattern tighten after the first one
>> because the center spiral set usually loosens when the ends get
torqued.
>> This is immediately though.
>>
>> Mike
>>
>> RoyJ wrote:
>>> What Mike says but I do them without the cork.
>>>
>>> I'll add a couple of reminders. When Mike says clean, that means
REALLY
>>> clean. The RTV is not compatible with any sort of grease film. I clean
>>> my valve covers in a 5 gallon bucket full of extremely hot water and
>>> laundry soap. Top of the engine needs to be scraped, wiped with
solvent,
>>> then hit with brake cleaner, wipe with paper towel. If the paper has
any
>>> discoloration, clean it some more.
>>>
>>> Apply Permatex Black with or without the gasket (your choice), set the
>>> cover on immediately. Open time on the Permatex Black is only about 5
>>> minutes so you need to move briskly. Tighten the bolts down snug
enough
>>> to make sure all the RTV is contacting the opposite surface. Let it
cure
>>> for 24 hours, spray it with water if you want to push it a bit. Torque
>>> to spec after the 24 hours is up.
>>>
>>> Greg wrote:
>>>> So after an hour on google, what is everyones recomendation on
doing
>>>> the valve cover gasket on a CJ7 258 engine, cork, rubber? RTV or not?
>>>> Torque specs?
>>>> Installed a rebuilt engine 2 years ago, new gasket leaked a small
>>>> amount from start, so seeing that engine is sitting in new frame with
>>>> no body around it, nows the time for a replace. So if anyone has any
>>>> opinion or knows the torque spec I would appreciate it, aluminum
cover
>>>> by the way.
>>>>
>
> --
> Will Honea
> ** Posted from http://www.teranews.com
**
|
