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From: Scott Dorsey on 30 Dec 2009 20:40
>> Yea so far so good there are 2 bolts behing the engine (manifold heat
>> sheld cover bolts) started today soaking bolts a day with 3 in 1 oil,
>> it looks like I'm going to have to totally take both manofolds off,
>> that is the worst of it.

Skip the machine oil and try PB Blaster, or Break-Free or another
penetrating oil designed for the job. Not very expensive and will save
a lot of grief.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."
From: ctops.legal on 1 Jan 2010 07:33
On Dec 30 2009, 8:40 pm, klu...(a)panix.com (Scott Dorsey) wrote:
> >> Yea so far so good there are 2 bolts behing the engine (manifold heat
> >> sheld cover bolts) started today soaking bolts a day with 3 in 1 oil,
> >> it looks like I'm going to have to totally take both manofolds off,
> >> that is the worst of it.
>
> Skip the machine oil and try PB Blaster, or Break-Free or another
> penetrating oil designed for the job.  Not very expensive and will save
> a lot of grief.
> --scott
>
> --
> "C'est un Nagra.  C'est suisse, et tres, tres precis."

I did use PB Blaster, the rain has shut me down, the "push rod removal
tool" if needed I can get from a friend that has a shop, this guy
tells me they remove and replace the back- Head with the manifold
"attached" I can see removal but replacement is,,, well let's see.



Curt
From: ctops.legal on 1 Jan 2010 17:59
On Jan 1, 7:33 am, "ctops.legal" <ctops.le...(a)gmail.com> wrote:
> On Dec 30 2009, 8:40 pm, klu...(a)panix.com (Scott Dorsey) wrote:
>
> > >> Yea so far so good there are 2 bolts behing the engine (manifold heat
> > >> sheld cover bolts) started today soaking bolts a day with 3 in 1 oil,
> > >> it looks like I'm going to have to totally take both manofolds off,
> > >> that is the worst of it.
>
> > Skip the machine oil and try PB Blaster, or Break-Free or another
> > penetrating oil designed for the job.  Not very expensive and will save
> > a lot of grief.
> > --scott
>
> > --
> > "C'est un Nagra.  C'est suisse, et tres, tres precis."
>
> I did use PB Blaster, the rain has shut me down, the "push rod removal
> tool" if needed I can get from a friend that has a shop, this guy
> tells me they remove and replace the back- Head with the manifold
> "attached" I can see removal but replacement is,,, well let's see.
>
> Curt

Everthing is ready to pull apart, found this on the net;

http://hubpages.com/hub/Chevy-31-Liter-Engine-Leaking-Intake-Manifold-Gasket-and-Warped-Heads

still have the 2 last back manifold sheald cover bolts (has to be done
from the bottom along with the 2 main manifold/exaust pipe nuts both
came off, good ole PB Blaster and a 1/2 in. drive impact with 120psi
pushing.


Curt
From: ctops.legal on 2 Jan 2010 16:44
On Jan 1, 5:59 pm, "ctops.legal" <ctops.le...(a)gmail.com> wrote:
> On Jan 1, 7:33 am, "ctops.legal" <ctops.le...(a)gmail.com> wrote:
>
>
>
>
>
> > On Dec 30 2009, 8:40 pm, klu...(a)panix.com (Scott Dorsey) wrote:
>
> > > >> Yea so far so good there are 2 bolts behing the engine (manifold heat
> > > >> sheld cover bolts) started today soaking bolts a day with 3 in 1 oil,
> > > >> it looks like I'm going to have to totally take both manofolds off,
> > > >> that is the worst of it.
>
> > > Skip the machine oil and try PB Blaster, or Break-Free or another
> > > penetrating oil designed for the job.  Not very expensive and will save
> > > a lot of grief.
> > > --scott
>
> > > --
> > > "C'est un Nagra.  C'est suisse, et tres, tres precis."
>
> > I did use PB Blaster, the rain has shut me down, the "push rod removal
> > tool" if needed I can get from a friend that has a shop, this guy
> > tells me they remove and replace the back- Head with the manifold
> > "attached" I can see removal but replacement is,,, well let's see.
>
> > Curt
>
> Everthing is ready to pull apart, found this on the net;
>
> http://hubpages.com/hub/Chevy-31-Liter-Engine-Leaking-Intake-Manifold...
>
> still have the 2 last back manifold sheald cover bolts (has to be done
> from the bottom along with the 2 main manifold/exaust pipe nuts both
> came off, good ole PB Blaster and a 1/2 in. drive impact with 120psi
> pushing.
>
> Curt- Hide quoted text -
>
> - Show quoted text -

As I suspected the thermostat went out you can see the place right
under the thermostat that's where the gasket failed from the high
heat, resurface the heads on Mon. back on the road Tue.
From: aarcuda69062 on 5 Jan 2010 14:26
In article
<45b393fc-5dbd-44a6-93de-2046aace24b7(a)r5g2000yqb.googlegroups.com>,
"ctops.legal" <ctops.legal(a)gmail.com> wrote:

>
> Yes I just made an inquiry to FelPro about the 2 part #'s, the local
> parts guy where I purchased my current set said the only visual
> differnece is an 0-ring type gasket but could not be sure, and if you
> open the seal on the box you are stuck, glad I didn't. Thank's the HST
> 9957 PT-1 was the corresponding part #, a "problem solver" fix that
> makes since, as I was inspecting the engine's intake manifold's mating
> surface right at the thermostat area (the failure of which was
> probably the cause of this repair) that area don't look like a gasket
> was even used at the fatcory rather a gasket maker sealant,

There should be a dab of RTV in the corner where the block, head and
manifold all meet. Also, RTV is used on the end rails of the engine
block to lower intake in leu of a gasket. The actual seal around the
coolant passages and the intake ports on the OE style gaskets is a
formed in place silicone insert. There is not enough surrounding
support around those silicone inserts and over time, expansion and
contraction, the plastic backbone of the gasket shears apart resulting
in the leak.

> I
> requested the .pdf file for torque specs. from FelPro I have to get a
> second opinion from the above posted spec's no offence to the
> publisher I'm a second and third opinion researcher. I will post the
> link from FelPro (when I get a response) to the .pdf file. The Co. is
> in MI. got to be cold up there it's 11:55pm here sunshine state time
> 30 degrees right now, to cold for driveway mechanican around :-)

Those torque specs were straight off of Mitchell On Demand and
referenced the TSBs GM issued on that engine and its sealing problems.
Rest assured, they work just fine, I've done dozens and dozens of those
engines with zero repeat failures.

The inch pound versus foot pound thing is common sense considering the
size of fasteners being utilized.
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