[DeTomaso] Cylinder Heads leaking
sean mundy
seanmundy at hotmail.com
Sun Nov 22 19:42:53 EST 2015
Compression test shows1= 1602= 1203= 2004= couldnt get the comp tester in the spark plug hole. Too tight with the coolant tank in the way.On 5-8 I was hooking up the comp tester and getting really bad readings but I didn't have the rockers arms installedand I think that is necessary. Not sure if the readings I did get show a piston ring problem or a valve leak. I will do a leak down test next when I pick up a tester.
Date: Sat, 21 Nov 2015 07:00:21 -0800
Subject: Re: [DeTomaso] Cylinder Heads leaking
From: asajay at asajay.com
To: seanmundy at hotmail.com
CC: ehpantera at yahoo.com; mikeldrew at aol.com; detomaso at poca.com
The air is probably leaking past the rings, which have a designed in gap. With the valves closed, the cylinder is NOT a hermetically sealed container.
Asa Jay
Sent using Jedi Mind Tricks
sean mundy <seanmundy at hotmail.com> wrote:
I tried pumping air into 7 and 8 spark plug holes and both I can hear air leaking. I have all my rockers removed on that side so all the valves should be closed. I've tried a few different types of gaskets but buying the CHI specific ones seemed to be the best approach. They fit perfect so I hoped my valve seals were the problem especially since there is a lot of blue smoke on startup after the car has been sitting awhile. I re torqued the heads thinking the air leak could only be either the valves or a leaking head gasket. I have no signs of coolant in my oil. Maybe I have multiple problems ?
Date: Sat, 21 Nov 2015 00:52:12 +0000
From: ehpantera at yahoo.com
To: seanmundy at hotmail.com; mikeldrew at aol.com
CC: detomaso at poca.com
Subject: Re: [DeTomaso] Cylinder Heads leaking
I just buy a roll of gasket material and cut my own. Never any leaks and easy to do.Mark
On Friday, November 20, 2015 7:30 PM, sean mundy <seanmundy at hotmail.com> wrote:
Thank you Mike. That explains a possible oil leak being sucked in via a leak but that wouldn't account for me hearing air leaking when pumping air into the cylinder with both valves closed? I have CHI heads and CHI intake and I'm using their specific intake gasket set. I don't think the stock gasket is going to match up all that well. > CC: detomaso at poca.com > From: MikeLDrew at aol.com > Subject: Re: [DeTomaso] Cylinder Heads leaking > Date: Fri, 20 Nov 2015 16:12:19 -0800 > To: seanmundy at hotmail.com > > Sean, > > This is a VERY common problem. Your intake manifold gasket has failed and is leaking on the bottom edge, allowing oil to be sucked from the valley under the intake into one or more cylinders. > > Many people have made the mistake of using Fel-Pro 'Print-o-seal' intake gaskets. These things are notorious for failing; so much so that you can find numerous references to them on Internet forums for all sorts of cars, where they are commonly called 'Print-o-leak' gaskets! > > I happen to favor the stock-style valley pan gasket, Fel pro MS96012. If you follow the installation instructions to the letter, these seal fine with the added advantage of cooling the underside of the intake by shielding it from oil splash. > > There is a story with photos about this chronic problem in a recent PCNC newsletter; you can read it by accessing the website at www.panteraclubnorcal.com > > I've helped repair two local cars with this problem in the past few months and know of a third that is awaiting repair.... > > Mike > > > > Sent from my iPhone > > On Nov 20, 2015, at 15:42, sean mundy <seanmundy at hotmail.com> wrote: > > > After a long hiatus, I am back working on my Pantera. Latest issue is > > the engine is burning oil at about a quart every 300 miles. > > My spark plugs don't look horrible but something is going on. I re > > torqued the cylinder heads and intake manifold and made sure my pc > > valve was working. I looked at my intake valves with an > > inspection camera and there is a lot of carbon buildup but I only have > > about 2k miles on the new aluminum heads. I thought my valve seals may > > be leaking so I started removing the rockers on one side and tried to > > replace the Teflon valve seals on #8cyl with new Comp Cam Viton seals. > > I connected compressed air to the #8 spark plug hole to hold the valve > > up so I could remove the spring. I don't think you are supposed to > > but I can hear air leaking from somewhere inside the engine. It seems > > like I can feel a little air coming out of the top of the intake > > manifold with my carb removed. I can't trace the air leak. > > Need some tips on what steps I should take at this point. Thanks, Sean > > _______________________________________________ > > > > Detomaso Forum Managed by POCA > > Posted emails must not exceed 1.5 Megabytes > > DeTomaso mailing list > > DeTomaso at poca.com > > http://poca.com/mailman/listinfo/detomaso_poca.com > > > > To manage your subscription (change email address, unsubscribe, etc.) use the links above.
_______________________________________________Detomaso Forum Managed by POCAPosted emails must not exceed 1.5 MegabytesDeTomaso mailing listDeTomaso at poca.comhttp://poca.com/mailman/listinfo/detomaso_poca.comTo manage your subscription (change email address, unsubscribe, etc.) use the links above.
I tried pumping air into 7 and 8 spark plug holes and both I can hear
air leaking. I have all my rockers removed on that side so all the
valves should be closed. I've tried a few different types of gaskets
but buying the CHI specific ones seemed to be the best approach. They
fit perfect so I hoped my valve seals were the problem especially since
there is a lot of blue smoke on startup after the car has been
sitting awhile. I re torqued the heads thinking the air leak could
only be either the valves or a leaking head gasket. I have no signs
of coolant in my oil. Maybe I have multiple problems ?
__________________________________________________________________
Date: Sat, 21 Nov 2015 00:52:12 +0000
From: ehpantera at yahoo.com
To: seanmundy at hotmail.com; mikeldrew at aol.com
CC: detomaso at poca.com
Subject: Re: [DeTomaso] Cylinder Heads leaking
I just buy a roll of gasket material and cut my own. Never any leaks
and easy to do.
Mark
On Friday, November 20, 2015 7:30 PM, sean mundy
<seanmundy at hotmail.com> wrote:
Thank you Mike. That explains a possible oil leak being sucked in
via
a leak but that wouldn't account for me hearing air leaking when
pumping air into the cylinder with both valves closed? I have CHI
heads and CHI intake and I'm using their specific intake gasket set.
I
don't think the stock gasket is going to match up all that well.
> CC: [1]detomaso at poca.com
> From: [2]MikeLDrew at aol.com
> Subject: Re: [DeTomaso] Cylinder Heads leaking
> Date: Fri, 20 Nov 2015 16:12:19 -0800
> To: [3]seanmundy at hotmail.com
>
> Sean,
>
> This is a VERY common problem. Your intake manifold gasket has
failed
and is leaking on the bottom edge, allowing oil to be sucked from the
valley under the intake into one or more cylinders.
>
> Many people have made the mistake of using Fel-Pro 'Print-o-seal'
intake gaskets. These things are notorious for failing; so much so
that
you can find numerous references to them on Internet forums for all
sorts of cars, where they are commonly called 'Print-o-leak' gaskets!
>
> I happen to favor the stock-style valley pan gasket, Fel pro
MS96012.
If you follow the installation instructions to the letter, these seal
fine with the added advantage of cooling the underside of the intake
by
shielding it from oil splash.
>
> There is a story with photos about this chronic problem in a recent
PCNC newsletter; you can read it by accessing the website at
www.panteraclubnorcal.com
>
> I've helped repair two local cars with this problem in the past few
months and know of a third that is awaiting repair....
>
> Mike
>
>
>
> Sent from my iPhone
>
> On Nov 20, 2015, at 15:42, sean mundy <[4]seanmundy at hotmail.com>
wrote:
>
> > After a long hiatus, I am back working on my Pantera. Latest
issue
is
> > the engine is burning oil at about a quart every 300 miles.
> > My spark plugs don't look horrible but something is going on. I
re
> > torqued the cylinder heads and intake manifold and made sure my
pc
> > valve was working. I looked at my intake valves with an
> > inspection camera and there is a lot of carbon buildup but I only
have
> > about 2k miles on the new aluminum heads. I thought my valve
seals
may
> > be leaking so I started removing the rockers on one side and
tried
to
> > replace the Teflon valve seals on #8cyl with new Comp Cam Viton
seals.
> > I connected compressed air to the #8 spark plug hole to hold the
valve
> > up so I could remove the spring. I don't think you are supposed
to
> > but I can hear air leaking from somewhere inside the engine. It
seems
> > like I can feel a little air coming out of the top of the intake
> > manifold with my carb removed. I can't trace the air leak.
> > Need some tips on what steps I should take at this point. Thanks,
Sean
> > _______________________________________________
> >
> > Detomaso Forum Managed by POCA
> > Posted emails must not exceed 1.5 Megabytes
> > DeTomaso mailing list
> > [5]DeTomaso at poca.com
> > [6]http://poca.com/mailman/listinfo/detomaso_poca.com
> >
> > To manage your subscription (change email address, unsubscribe,
etc.) use the links above.
_______________________________________________
Detomaso Forum Managed by POCA
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[8]http://poca.com/mailman/listinfo/detomaso_poca.com
To manage your subscription (change email address, unsubscribe, etc.)
use the links above.
References
1. mailto:detomaso at poca.com
2. mailto:MikeLDrew at aol.com
3. mailto:seanmundy at hotmail.com
4. mailto:seanmundy at hotmail.com
5. mailto:DeTomaso at poca.com
6. http://poca.com/mailman/listinfo/detomaso_poca.com
7. mailto:DeTomaso at poca.com
8. http://poca.com/mailman/listinfo/detomaso_poca.com
_______________________________________________
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Posted emails must not exceed 1.5 Megabytes
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To manage your subscription (change email address, unsubscribe, etc.) use the links above.
-------------- next part --------------
Compression test shows
1= 160
2= 120
3= 200
4= couldnt get the comp tester in the spark plug hole. Too tight with
the coolant tank in the way.
On 5-8 I was hooking up the comp tester and getting really bad
readings but I didn't have the rockers arms installed
and I think that is necessary. Not sure if the readings I did get show
a piston ring problem or a valve leak.
I will do a leak down test next when I pick up a tester.
__________________________________________________________________
Date: Sat, 21 Nov 2015 07:00:21 -0800
Subject: Re: [DeTomaso] Cylinder Heads leaking
From: asajay at asajay.com
To: seanmundy at hotmail.com
CC: ehpantera at yahoo.com; mikeldrew at aol.com; detomaso at poca.com
The air is probably leaking past the rings, which have a designed in
gap. With the valves closed, the cylinder is NOT a hermetically sealed
container.
Asa Jay
Sent using Jedi Mind Tricks
sean mundy <seanmundy at hotmail.com> wrote:
I tried pumping air into 7 and 8 spark plug holes and both I can hear
air leaking. I have all my rockers removed on that side so all the
valves should be closed. I've tried a few different types of gaskets
but buying the CHI specific ones seemed to be the best approach. They
fit perfect so I hoped my valve seals were the problem especially since
there is a lot of blue smoke on startup after the car has been sitting
awhile. I re torqued the heads thinking the air leak could only be
either the valves or a leaking head gasket. I have no signs of coolant
in my oil. Maybe I have multiple problems ?
Date: Sat, 21 Nov 2015 00:52:12 +0000
From: ehpantera at yahoo.com
To: seanmundy at hotmail.com; mikeldrew at aol.com
CC: detomaso at poca.com
Subject: Re: [DeTomaso] Cylinder Heads leaking
I just buy a roll of gasket material and cut my own. Never any leaks
and easy to do.Mark
On Friday, November 20, 2015 7:30 PM, sean mundy
<seanmundy at hotmail.com> wrote:
Thank you Mike. That explains a possible oil leak being sucked in
via a leak but that wouldn't account for me hearing air leaking
when pumping air into the cylinder with both valves closed? I have
CHI heads and CHI intake and I'm using their specific intake gasket
set. I don't think the stock gasket is going to match up all that
well. > CC: detomaso at poca.com > From: MikeLDrew at aol.com >
Subject: Re: [DeTomaso] Cylinder Heads leaking > Date: Fri, 20 Nov
2015 16:12:19 -0800 > To: seanmundy at hotmail.com > > Sean, > >
This is a VERY common problem. Your intake manifold gasket has failed
and is leaking on the bottom edge, allowing oil to be sucked from the
valley under the intake into one or more cylinders. > > Many people
have made the mistake of using Fel-Pro 'Print-o-seal' intake gaskets.
These things are notorious for failing; so much so that you can find
numerous references to them on Internet forums for all sorts of cars,
where they are commonly called 'Print-o-leak' gaskets! > > I happen
to favor the stock-style valley pan gasket, Fel pro MS96012. If you
follow the installation instructions to the letter, these seal fine
with the added advantage of cooling the underside of the intake by
shielding it from oil splash. > > There is a story with photos
about this chronic problem in a recent PCNC newsletter; you can read
it by accessing the website at www.panteraclubnorcal.com > > I've
helped repair two local cars with this problem in the past few months
and know of a third that is awaiting repair.... > > Mike > >
> > Sent from my iPhone > > On Nov 20, 2015, at 15:42, sean mundy
<seanmundy at hotmail.com> wrote: > > > After a long hiatus, I am back
working on my Pantera. Latest issue is > > the engine is burning
oil at about a quart every 300 miles. > > My spark plugs don't look
horrible but something is going on. I re > > torqued the cylinder
heads and intake manifold and made sure my pc > > valve was working.
I looked at my intake valves with an > > inspection camera and there
is a lot of carbon buildup but I only have > > about 2k miles on
the new aluminum heads. I thought my valve seals may > > be leaking
so I started removing the rockers on one side and tried to > >
replace the Teflon valve seals on #8cyl with new Comp Cam Viton
seals. > > I connected compressed air to the #8 spark plug hole to
hold the valve > > up so I could remove the spring. I don't think
you are supposed to > > but I can hear air leaking from somewhere
inside the engine. It seems > > like I can feel a little air coming
out of the top of the intake > > manifold with my carb removed. I
can't trace the air leak. > > Need some tips on what steps I should
take at this point. Thanks, Sean > >
_______________________________________________ > > > > Detomaso
Forum Managed by POCA > > Posted emails must not exceed 1.5
Megabytes > > DeTomaso mailing list > > DeTomaso at poca.com > >
http://poca.com/mailman/listinfo/detomaso_poca.com > > > > To
manage your subscription (change email address, unsubscribe, etc.)
use the links above.
_______________________________________________Detomaso Forum Managed
by POCAPosted emails must not exceed 1.5 MegabytesDeTomaso mailing
listDeTomaso at poca.comhttp://poca.com/mailman/listinfo/detomaso_poca.com
To manage your subscription (change email address, unsubscribe, etc.)
use the links above.
I tried pumping air into 7 and 8 spark plug holes and both I can
hear
air leaking. I have all my rockers removed on that side so all the
valves should be closed. I've tried a few different types of
gaskets
but buying the CHI specific ones seemed to be the best approach.
They
fit perfect so I hoped my valve seals were the problem especially
since
there is a lot of blue smoke on startup after the car has been
sitting awhile. I re torqued the heads thinking the air leak could
only be either the valves or a leaking head gasket. I have no signs
of coolant in my oil. Maybe I have multiple problems ?
__________________________________________________________________
Date: Sat, 21 Nov 2015 00:52:12 +0000
From: ehpantera at yahoo.com
To: seanmundy at hotmail.com; mikeldrew at aol.com
CC: detomaso at poca.com
Subject: Re: [DeTomaso] Cylinder Heads leaking
I just buy a roll of gasket material and cut my own. Never any leaks
and easy to do.
Mark
On Friday, November 20, 2015 7:30 PM, sean mundy
<seanmundy at hotmail.com> wrote:
Thank you Mike. That explains a possible oil leak being sucked in
via
a leak but that wouldn't account for me hearing air leaking when
pumping air into the cylinder with both valves closed? I have CHI
heads and CHI intake and I'm using their specific intake gasket
set.
I
don't think the stock gasket is going to match up all that well.
> CC: [1]detomaso at poca.com
> From: [2]MikeLDrew at aol.com
> Subject: Re: [DeTomaso] Cylinder Heads leaking
> Date: Fri, 20 Nov 2015 16:12:19 -0800
> To: [3]seanmundy at hotmail.com
>
> Sean,
>
> This is a VERY common problem. Your intake manifold gasket has
failed
and is leaking on the bottom edge, allowing oil to be sucked from
the
valley under the intake into one or more cylinders.
>
> Many people have made the mistake of using Fel-Pro
'Print-o-seal'
intake gaskets. These things are notorious for failing; so much so
that
you can find numerous references to them on Internet forums for
all
sorts of cars, where they are commonly called 'Print-o-leak'
gaskets!
>
> I happen to favor the stock-style valley pan gasket, Fel pro
MS96012.
If you follow the installation instructions to the letter, these
seal
fine with the added advantage of cooling the underside of the
intake
by
shielding it from oil splash.
>
> There is a story with photos about this chronic problem in a
recent
PCNC newsletter; you can read it by accessing the website at
www.panteraclubnorcal.com
>
> I've helped repair two local cars with this problem in the past
few
months and know of a third that is awaiting repair....
>
> Mike
>
>
>
> Sent from my iPhone
>
> On Nov 20, 2015, at 15:42, sean mundy <[4]seanmundy at hotmail.com>
wrote:
>
> > After a long hiatus, I am back working on my Pantera. Latest
issue
is
> > the engine is burning oil at about a quart every 300 miles.
> > My spark plugs don't look horrible but something is going on.
I
re
> > torqued the cylinder heads and intake manifold and made sure
my
pc
> > valve was working. I looked at my intake valves with an
> > inspection camera and there is a lot of carbon buildup but I
only
have
> > about 2k miles on the new aluminum heads. I thought my valve
seals
may
> > be leaking so I started removing the rockers on one side and
tried
to
> > replace the Teflon valve seals on #8cyl with new Comp Cam
Viton
seals.
> > I connected compressed air to the #8 spark plug hole to hold
the
valve
> > up so I could remove the spring. I don't think you are
supposed
to
> > but I can hear air leaking from somewhere inside the engine.
It
seems
> > like I can feel a little air coming out of the top of the
intake
> > manifold with my carb removed. I can't trace the air leak.
> > Need some tips on what steps I should take at this point.
Thanks,
Sean
> > _______________________________________________
> >
> > Detomaso Forum Managed by POCA
> > Posted emails must not exceed 1.5 Megabytes
> > DeTomaso mailing list
> > [5]DeTomaso at poca.com
> > [6]http://poca.com/mailman/listinfo/detomaso_poca.com
> >
> > To manage your subscription (change email address,
unsubscribe,
etc.) use the links above.
_______________________________________________
Detomaso Forum Managed by POCA
Posted emails must not exceed 1.5 Megabytes
DeTomaso mailing list
[7]DeTomaso at poca.com
[8]http://poca.com/mailman/listinfo/detomaso_poca.com
To manage your subscription (change email address, unsubscribe,
etc.)
use the links above.
References
1. mailto:detomaso at poca.com
2. mailto:MikeLDrew at aol.com
3. mailto:seanmundy at hotmail.com
4. mailto:seanmundy at hotmail.com
5. mailto:DeTomaso at poca.com
6. http://poca.com/mailman/listinfo/detomaso_poca.com
7. mailto:DeTomaso at poca.com
8. http://poca.com/mailman/listinfo/detomaso_poca.com
_______________________________________________
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Posted emails must not exceed 1.5 Megabytes
DeTomaso mailing list
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