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#1 |
Registered User
Join Date: Jan 2015
Location: Ventura, CA
Posts: 818
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to gasket or not to gasket, that is the question
I have heard some people run gaskets and others don't? I was thinking of using gaskets. I cleaned and decked both surfaces. What do you guys think/recommend or have heard of?
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..................... ____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1970 C20 -_--_--_- ______ _--_--_- /___|__\____ -_--_-_ |_(0)|__|_(0)] 1972 K5 |
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#2 | |
Account Suspended
Join Date: Jul 2015
Location: Traverse City MI
Posts: 147
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Re: to gasket or not to gasket, that is the question
Quote:
Now comes the part your wife is really going to love. Set your oven to 350 degrees, get a baking dish and put 1/2 inch of sand in the bottom. Put the copper gaskets on top, cover them with another 1/2 inch of sand and bake them for two hours. Turn the oven off and let it cool back to room temperature before opening the door. Your gaskets are now annealed and will be very soft. Soft enough to compress when the manifold is torqued down. Just remember, if you ever need to loosen those bolts, you will need a new set of gaskets. |
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#3 | |
Registered User
Join Date: Jan 2015
Location: Ventura, CA
Posts: 818
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Re: to gasket or not to gasket, that is the question
Quote:
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..................... ____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1970 C20 -_--_--_- ______ _--_--_- /___|__\____ -_--_-_ |_(0)|__|_(0)] 1972 K5 |
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#4 |
Registered User
Join Date: Apr 2013
Location: South Westerlo, New York
Posts: 1,325
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Re: to gasket or not to gasket, that is the question
Where did you get the phonelic material to make your own?
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Thanks, Joe.. 1969 C/10, 348 C.I., 3X2 bbl. V8, 2004r , LWB. |
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#5 |
Registered User
Join Date: Jan 2015
Location: Ventura, CA
Posts: 818
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Re: to gasket or not to gasket, that is the question
Lets just say it fell off a truck about 7 years ago.
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..................... ____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1970 C20 -_--_--_- ______ _--_--_- /___|__\____ -_--_-_ |_(0)|__|_(0)] 1972 K5 |
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#6 |
Account Suspended
Join Date: Jul 2015
Location: Traverse City MI
Posts: 147
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Re: to gasket or not to gasket, that is the question
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#7 |
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Join Date: Apr 2014
Location: Birmingham, AL
Posts: 560
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Re: to gasket or not to gasket, that is the question
How did you deck the surfaces? Use gasket, I have never removed a manifold that did not have a gasket.
Last edited by Aruba1; 09-01-2015 at 10:29 AM. Reason: spelling |
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#8 |
Registered User
Join Date: Jan 2011
Location: Lynn Haven Florida
Posts: 1,019
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Re: to gasket or not to gasket, that is the question
i've always used gaskets, some of the new gaskets really do a good job, i've never heard of not using gaskets, and i've been a mechanic for over 27 years now
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"Send in the clowns the goats are loose" |
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#9 |
Account Suspended
Join Date: Jul 2015
Location: Traverse City MI
Posts: 147
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Re: to gasket or not to gasket, that is the question
Sanderson uses a 1/8 in wide by 1/16 in high sealing ring machined into the aluminum header flange on their headers. No gaskets. If you use locking fasteners, or just keep the bolts properly torqued they will never leak.
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#10 |
Registered User
Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,188
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Re: to gasket or not to gasket, that is the question
No gaskets from the factory. If they were decked correctly, and verified flat with a level, they'll be fine without gaskets. I have a good number of miles on mine, leak free. Best of luck with your decision.
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#11 |
Senior Member
![]() Join Date: Oct 2009
Location: Godley, TX
Posts: 17,964
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Re: to gasket or not to gasket, that is the question
Yes. I run the perforated metal type.
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#12 |
Registered User
Join Date: Sep 2013
Location: Vacaville CA
Posts: 490
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Re: to gasket or not to gasket, that is the question
I always use a gasket. And I like the metal-sandwich version on both headers and cast manifolds. Gaskets dry, anti-seize on the bolts.
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#13 | |
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Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: to gasket or not to gasket, that is the question
Quote:
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#14 |
Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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Re: to gasket or not to gasket, that is the question
I run the manifolds with no gaskets and no leaks.
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#15 |
Registered User
Join Date: Jun 2015
Location: Indanapolis, IN
Posts: 604
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Re: to gasket or not to gasket, that is the question
Absolutely use gaskets.
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#16 |
Registered User
Join Date: Jul 2010
Location: MD
Posts: 1,937
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Re: to gasket or not to gasket, that is the question
Unless you have two flat surfaces, which you don't from looking at the first image. Use gaskets.
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#17 |
Registered User
Join Date: Jan 2015
Location: Ventura, CA
Posts: 818
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Re: to gasket or not to gasket, that is the question
I do have 2 perfectly decked surfaces. the pic is just in the middle of the process. That's why I'm asking if to use gaskets or not.
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..................... ____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1970 C20 -_--_--_- ______ _--_--_- /___|__\____ -_--_-_ |_(0)|__|_(0)] 1972 K5 |
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#18 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,622
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Re: to gasket or not to gasket, that is the question
If you're trying to keep heat away from your carb, you need a heat shield instead of a spacer.
Especially with a holley. https://www.holley.com/products/fuel...s/parts/108-70 |
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#19 | |
Registered User
Join Date: Jan 2015
Location: Ventura, CA
Posts: 818
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Re: to gasket or not to gasket, that is the question
Quote:
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..................... ____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1970 C20 -_--_--_- ______ _--_--_- /___|__\____ -_--_-_ |_(0)|__|_(0)] 1972 K5 |
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#20 |
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Join Date: Aug 2009
Location: Bowser
Posts: 13,622
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Re: to gasket or not to gasket, that is the question
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#21 |
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Join Date: May 2009
Location: Motor City
Posts: 9,200
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Re: to gasket or not to gasket, that is the question
...for a structure borne heat transmssion path.
You also need the shield for convection (air borne heat path). K
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#22 |
Registered User
Join Date: Feb 2003
Location: Santa Ana, CA
Posts: 2,191
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Re: to gasket or not to gasket, that is the question
I respect the effort that went into "decking" the heads and manifolds. However, dropping in a good set of soft aluminum gaskets would give you the same result without all the elbow grease. I did that many years ago and never looked back. The aluminum gaskets are also reusable if you have to pull a manifold. BTW, have you fired the engine without gaskets to check the decking job? That should answer your question.
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#23 |
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Join Date: Jul 2010
Location: MD
Posts: 1,937
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Re: to gasket or not to gasket, that is the question
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#24 |
Registered User
Join Date: Jan 2015
Location: Ventura, CA
Posts: 818
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Re: to gasket or not to gasket, that is the question
Yup, I have a machined straight edge and a machined 2 foot sanding bar. all surfaces are flat with each other. Took me 4 hours to do the block and headers. It was not fun.
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..................... ____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1970 C20 -_--_--_- ______ _--_--_- /___|__\____ -_--_-_ |_(0)|__|_(0)] 1972 K5 |
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#25 |
Registered User
Join Date: Jul 2010
Location: MD
Posts: 1,937
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Cool deal. Was just asking since I have seen a lot of sbc heads blown out at the gasket surfaces from them just being sanded smooth with a disk.
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