Home » Public Forums » GMCnet » GR Aluminum Intake - Install Question
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165561 is a reply to message #165559] |
Fri, 06 April 2012 12:30   |
Gary Worobec
Messages: 867
Registered: May 2005
Karma: -1
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Senior Member |
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John,
I think you want a contact type adhesive like "Gaskacinch" or the
afformentioned 3M Weatherstrip Adhesive. RTV if not cured will still slip.
If you let it cure you may get high spots. I think the best bet is
Gaskacinch to hold the gasket to the head. Make sure that gasket is not
sitting too low or as others have found you will get a leak at the bottom of
the intake port. Then use use liberal amounts of RTV on the corners of the
head, block, manifold joint. I actually used a center punch and dimpled the
aluminum manifold and block where those two meet at the ends of the block.
This insures that if you have a gap that the hardened RTV will not blow out
under crankcase pressure because the dimples hold the RTV in place.
I've sent you some pictures offline
Thanks
Gary and Joanne Worobec
1973 GMC Glacier
Anza, CA
----- Original Message -----
From: "Jon Payne" <embrep@sbcglobal.net>
To: <gmclist@temp.gmcnet.org>
Sent: Friday, April 06, 2012 10:14 AM
Subject: [GMCnet] GR Aluminum Intake - Install Question
>
>
> Guys,
>
> This weekend I will be installing my new Rockwell intake. I have seen
> that some are gluing the gasket to the cylinder heads in order to ensure
> the gasket stays in place when setting the intake.
> The glue some are using is "Gorilla Snot" as seen in the below link. I
> assume he used the 3M brand.
>
> So the question I have is why not use RTV to hold it in place? Also if
> using glue as mentioned above how long should you wait until installing
> the intake?
>
> Thanks,
> Jon
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=21178&title=gorilla-snot-around-the-intake-and-water-ports&cat=4771
> --
> Jon Payne
> 76 Palm Beach
> Westfield,IN
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165602 is a reply to message #165599] |
Fri, 06 April 2012 22:56 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Jim,
I am under the impression that it is more important to center the gasket on the thin manifold runners since the head surface is very very large in comparison.
Wouldn't it be better to glue the gaskets to the manifold instead of the heads?
I'm looking for your opinion. I admit that I have only done this once in the past.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165624 is a reply to message #165602] |
Sat, 07 April 2012 08:58 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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| Ken Burton wrote on Fri, 06 April 2012 20:56 |
Jim,
I am under the impression that it is more important to center the gasket on the thin manifold runners since the head surface is very very large in comparison.
Wouldn't it be better to glue the gaskets to the manifold instead of the heads?
I'm looking for your opinion. I admit that I have only done this once in the past.
|
That makes sense to me too, Ken. As someone who is about to tackle this project, I really would like to know the most effective procedure. I only want to do this once. I don't want to end up with a worse situation than I have now, after going through all that work.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165626 is a reply to message #165602] |
Sat, 07 April 2012 09:13 |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
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Senior Member |
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| Ken Burton wrote on Fri, 06 April 2012 20:56 |
Jim,
I am under the impression that it is more important to center the gasket on the thin manifold runners since the head surface is very very large in comparison.
Wouldn't it be better to glue the gaskets to the manifold instead of the heads?
I'm looking for your opinion. I admit that I have only done this once in the past.
|
It is my opinion that yoU need to attach the gasket to the manifold. Of you center the gasket on the manifold, you will find you have to enlarge the bolt holes. If you do not, the gasket will almost be off the bottom lip of the intake.
I used Right Stuff. I think it is not leaking. Tested with propane, etc. I have done it there times. My biggest leaker was 6 quarts of oil in 400 miles.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165632 is a reply to message #165626] |
Sat, 07 April 2012 09:44 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Centering on the head or manifold is fine, but know it does not shift
is the most important.
On Sat, Apr 7, 2012 at 7:13 AM, George Beckman <gbeckman@pggp.com> wrote:
>
>
> Ken Burton wrote on Fri, 06 April 2012 20:56
>> Jim,
>>
>> I am under the impression that it is more important to center the gasket on the thin manifold runners since the head surface is very very large in comparison.
>>
>> Wouldn't it be better to glue the gaskets to the manifold instead of the heads?
>>
>> I'm looking for your opinion. Â I admit that I have only done this once in the past.
>
> It is my opinion that yoU need to attach the gasket to the manifold. Â Of you center the gasket on the manifold, you will find you have to enlarge the bolt holes. Â If you do not, the gasket will almost be off the bottom lip of the intake.
>
> I used Right Stuff. I think it is not leaking. Â Tested with propane, etc. I have done it there times. My biggest leaker was 6 quarts of oil in 400 miles.
> --
> '74 Eleganza, SE, Howell + EBL
> Best Wishes,
> George
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165708 is a reply to message #165559] |
Sun, 08 April 2012 07:39 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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That is an engine I rebuilt. I prefer the 3M product, always have and
always will. Once you set the gasket in place, use the bolts to maintain
alignment with flat washers on the bolts. It sets fast, but will
completely cure after you lay the intake. Do not use it with plans on
installing the intake the next day. Put heavy beads of RTV in the corners
of the bathtub to ensure a good seal beetween the intake gasket and bathtub
area. Apply the 3M product, set the gaskets. Lay a fat bead of RTV on the
block bathtub area,wait until it "skins", (touch the bead lightly, if your
fingerprint dissolves, it's ready) set the intake. Install the intake
bolts, torque to 10 ft lbs. Now find something else to do while the RTV
begins to vulcanize. Usually takes 8 hours, depending on ambient temps.
Now you can final torque the intake in 5 ft lb increments. You might have
to go around as many as 6 times, but you'll appreciate the results in the
end. If you ever have to pull the intake, you will appreciate how easy the
3M product is to clean up.
On Fri, Apr 6, 2012 at 10:14 AM, Jon Payne <embrep@sbcglobal.net> wrote:
>
>
> Guys,
>
> This weekend I will be installing my new Rockwell intake. I have seen
> that some are gluing the gasket to the cylinder heads in order to ensure
> the gasket stays in place when setting the intake.
> The glue some are using is "Gorilla Snot" as seen in the below link. I
> assume he used the 3M brand.
>
> So the question I have is why not use RTV to hold it in place? Also if
> using glue as mentioned above how long should you wait until installing the
> intake?
>
> Thanks,
> Jon
>
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=21178&title=gorilla-snot-around-the-intake-and-water-ports&cat=4771
> --
> Jon Payne
> 76 Palm Beach
> Westfield,IN
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Fathom the hypocrisy of a nation where every citizen must prove they have
health insurance......but not everyone has to prove they're a citizen.
Steve Ferguson
Sierra Vista, AZ
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165709 is a reply to message #165624] |
Sun, 08 April 2012 07:41 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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Let me know when you're ready and I'll swing by Carl. I've done over 250
of these and never had a failure to seal.
On Sat, Apr 7, 2012 at 6:58 AM, Carl Stouffer <carljr3b@yahoo.com> wrote:
>
>
> Ken Burton wrote on Fri, 06 April 2012 20:56
> > Jim,
> >
> > I am under the impression that it is more important to center the gasket
> on the thin manifold runners since the head surface is very very large in
> comparison.
> >
> > Wouldn't it be better to glue the gaskets to the manifold instead of the
> heads?
> >
> > I'm looking for your opinion. I admit that I have only done this once
> in the past.
>
>
>
> That makes sense to me too, Ken. As someone who is about to tackle this
> project, I really would like to know the most effective procedure. I only
> want to do this once. I don't want to end up with a worse situation than I
> have now, after going through all that work.
> --
> Carl S.
> '75 ex Palm Beach
> Tucson, AZ.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Fathom the hypocrisy of a nation where every citizen must prove they have
health insurance......but not everyone has to prove they're a citizen.
Steve Ferguson
Sierra Vista, AZ
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165716 is a reply to message #165708] |
Sun, 08 April 2012 09:22 |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Steve,
And as we have noted here before torque starting with the center bolts and
work outwards in an "X" pattern even though that's OPPOSITE to what the
manual says.
Regards,
Rob M.
-----Original Message-----
From: Steven Ferguson
That is an engine I rebuilt. I prefer the 3M product, always have and
always will. Once you set the gasket in place, use the bolts to maintain
alignment with flat washers on the bolts. It sets fast, but will
completely cure after you lay the intake. Do not use it with plans on
installing the intake the next day. Put heavy beads of RTV in the corners
of the bathtub to ensure a good seal beetween the intake gasket and bathtub
area. Apply the 3M product, set the gaskets. Lay a fat bead of RTV on the
block bathtub area,wait until it "skins", (touch the bead lightly, if your
fingerprint dissolves, it's ready) set the intake. Install the intake
bolts, torque to 10 ft lbs. Now find something else to do while the RTV
begins to vulcanize. Usually takes 8 hours, depending on ambient temps.
Now you can final torque the intake in 5 ft lb increments. You might have
to go around as many as 6 times, but you'll appreciate the results in the
end. If you ever have to pull the intake, you will appreciate how easy the
3M product is to clean up.
Steve Ferguson
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165719 is a reply to message #165708] |
Sun, 08 April 2012 09:56 |
Gary Berry
Messages: 1002
Registered: May 2005
Karma: -1
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Senior Member |
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Hey GeneF;
Just thinking that you need to add this procedure from SteveF on
your website for eternity. This is good stuff, and it's FREE!!!
GaryB in Prosser, WA
On Sun, Apr 8, 2012 at 5:39 AM, Steven Ferguson <botiemad11@gmail.com> wrote:
> That is an engine I rebuilt. I prefer the 3M product, always have and
> always will. Once you set the gasket in place, use the bolts to maintain
> alignment with flat washers on the bolts. It sets fast, but will
> completely cure after you lay the intake. Do not use it with plans on
> installing the intake the next day. Put heavy beads of RTV in the corners
> of the bathtub to ensure a good seal beetween the intake gasket and bathtub
> area. Apply the 3M product, set the gaskets. Lay a fat bead of RTV on the
> block bathtub area,wait until it "skins", (touch the bead lightly, if your
> fingerprint dissolves, it's ready) set the intake. Install the intake
> bolts, torque to 10 ft lbs. Now find something else to do while the RTV
> begins to vulcanize. Usually takes 8 hours, depending on ambient temps.
> Now you can final torque the intake in 5 ft lb increments. You might have
> to go around as many as 6 times, but you'll appreciate the results in the
> end. If you ever have to pull the intake, you will appreciate how easy the
> 3M product is to clean up.
>
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165721 is a reply to message #165719] |
Sun, 08 April 2012 10:01 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Yup
On the way as we speak. Will also allow me to talk about the problems with the al manifold
Gene
FREE WIFI @ Mickey D
On Apr 8, 2012, at 7:56 AM, Gary Berry <duallycc@gmail.com> wrote:
> Hey GeneF;
>
> Just thinking that you need to add this procedure from SteveF on
> your website for eternity. This is good stuff, and it's FREE!!!
>
> GaryB in Prosser, WA
>
> On Sun, Apr 8, 2012 at 5:39 AM, Steven Ferguson <botiemad11@gmail.com> wrote:
>> That is an engine I rebuilt. I prefer the 3M product, always have and
>> always will. Once you set the gasket in place, use the bolts to maintain
>> alignment with flat washers on the bolts. It sets fast, but will
>> completely cure after you lay the intake. Do not use it with plans on
>> installing the intake the next day. Put heavy beads of RTV in the corners
>> of the bathtub to ensure a good seal beetween the intake gasket and bathtub
>> area. Apply the 3M product, set the gaskets. Lay a fat bead of RTV on the
>> block bathtub area,wait until it "skins", (touch the bead lightly, if your
>> fingerprint dissolves, it's ready) set the intake. Install the intake
>> bolts, torque to 10 ft lbs. Now find something else to do while the RTV
>> begins to vulcanize. Usually takes 8 hours, depending on ambient temps.
>> Now you can final torque the intake in 5 ft lb increments. You might have
>> to go around as many as 6 times, but you'll appreciate the results in the
>> end. If you ever have to pull the intake, you will appreciate how easy the
>> 3M product is to clean up.
>>
> _______________________________________________
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165726 is a reply to message #165709] |
Sun, 08 April 2012 10:21 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
|
Senior Member |
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|
| Steven Ferguson wrote on Sun, 08 April 2012 05:41 |
Let me know when you're ready and I'll swing by Carl. I've done over 250
of these and never had a failure to seal.
On Sat, Apr 7, 2012 at 6:58 AM, Carl Stouffer <carljr3b@yahoo.com> wrote:
>
>
> Ken Burton wrote on Fri, 06 April 2012 20:56
> > Jim,
> >
> > I am under the impression that it is more important to center the gasket
> on the thin manifold runners since the head surface is very very large in
> comparison.
> >
> > Wouldn't it be better to glue the gaskets to the manifold instead of the
> heads?
> >
> > I'm looking for your opinion. I admit that I have only done this once
> in the past.
>
>
>
> That makes sense to me too, Ken. As someone who is about to tackle this
> project, I really would like to know the most effective procedure. I only
> want to do this once. I don't want to end up with a worse situation than I
> have now, after going through all that work.
> --
> Carl S.
> '75 ex Palm Beach
> Tucson, AZ.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Fathom the hypocrisy of a nation where every citizen must prove they have
health insurance......but not everyone has to prove they're a citizen.
Steve Ferguson
Sierra Vista, AZ
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Thanks Steve. I will definitely take you up on that. I have done several intake manifolds myself without difficulty, but I understand these Rockwells present some unique challenges. Your much more experienced help would be appreciated.
PS. I have a 'thank you' gift for you from Peter Bailey for your part in getting the 16" steel wheels to him.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
[Updated on: Sun, 08 April 2012 10:24] Report message to a moderator |
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| Re: [GMCnet] GR Aluminum Intake - Install Question [message #165731 is a reply to message #165712] |
Sun, 08 April 2012 10:51 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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I understand that Dick Paterson did a write up on this subject in the Winter GMCMI news letter. You might want to find that article and re-read it. I'm looking for my copy of it to re-read it myself.
Ken B.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: GR Aluminum Intake - Install Question [message #165745 is a reply to message #165559] |
Sun, 08 April 2012 11:58 |
Jon payne
Messages: 495
Registered: May 2008
Karma: 1
|
Senior Member |
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Lots of good information here to digest! I am pretty much ready to reinstall the intake. Took only 2 hours to remove.
So I was transferring the all the pieces from the old manifold to the new when I ran into two problems. First a port broke off on the TVC switch and the second problem I have is I cannot remove the heater hose nipple on the back RH side of the intake. There is no wrench flats on the nipple just a slot on the top. Needless to say I am having no luck removing it. I just as well install a new one but I doubt they are available.
For the TVC switch, I know JimK sells them but I was hoping to find one locally. Does anyone have the PN?
For the heater hose nipple, any ideas what I could use as a replacement?
Thanks,
Jon
Jon Payne
76 Palm Beach
Westfield,IN
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