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  •  » tri-y header gaskets

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    4/16/2015 7:13 PM  #1

    allmymoney66
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    From: Camden Point, Missouri
    Registered: 11/07/2013
    Posts: 38

    tri-y header gaskets

    I have a pair of tri-y headers that have the oval ports.  They are mounted on 1970 302 heads which have a more rectangular shape on the exhaust ports.  I need new gaskets but am confused as to wether I should get oval port or square port gaskets.  Anybody know or have a type they suggest?  The old ones have no brand or numbers on them.

     

    4/17/2015 9:06 AM  #2

    MS
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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,174

    Re: tri-y header gaskets

    You need oval port gaskets.  If you use the rectangular port gaskets, you will have 32 small exhaust leaks that will drive you nuts.
    Summit Racing sells the oval port gaskets.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    4/17/2015 2:56 PM  #3

    barnett468
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    Registered: 9/15/2014
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    Re: tri-y header gaskets

    .
    i would use remflex gaskets.

    http://catalog.remflex.com/FORD_Header_Exhaust_Manifold_Gasket_p/3004.htm

    http://catalog.remflex.com/category_s/98.htm

     

    4/17/2015 3:32 PM  #4

    MS
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    From: Canyon Lake, Texas
    Registered: 1/24/2013
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    Re: tri-y header gaskets

    Remflex looks good.  Have not tried them but they look correct.

    Beware of gaskets that have very thin material between the port and the bolt hole. They do not last if they seal ever.

    Barnett, do you have those on a car?  How is longevity?

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    4/17/2015 3:44 PM  #5

    barnett468
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    Re: tri-y header gaskets

    MustangSteve wrote:

    Remflex looks good.  Have not tried them but they look correct.

    Beware of gaskets that have very thin material between the port and the bolt hole. They do not last if they seal ever.

    Barnett, do you have those on a car?  How is longevity?

    once i discovered those they are all i use except for the occasional soft aluminum gaskets . . they are 100% graphite so they will never burn out like the paper type . . they also have a good amount of crush so they will in fact seal many warped headers . . done it several times . . just be very careful with them and do not bend them at all and do not use silicone on them.

     

    Last edited by barnett468 (4/17/2015 3:45 PM)

     

    4/17/2015 6:44 PM  #6

    rbtconsultants
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    Registered: 6/10/2013
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    Re: tri-y header gaskets

    We have ebay tri-y headers. I port matched the stock heads to the gasket that came with the headers. Now we think there is leak at the head on the drivers side. I'm thinking I'd like to replace with  remflex.  Any ideas on which of these would fit our motor?

    Thanks

    Bob

     

    4/17/2015 7:43 PM  #7

    barnett468
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    Re: tri-y header gaskets

    rbtconsultants wrote:

    We have ebay tri-y headers. I port matched the stock heads to the gasket that came with the headers. Now we think there is leak at the head on the drivers side. I'm thinking I'd like to replace with remflex. Any ideas on which of these would fit our motor?

    Thanks

    Bob

    are your headers square or oval etc?

    the link i posted shows all the remflex gaskets.
     

     

    4/17/2015 8:39 PM  #8

    jkordzi
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    From: Sequim, WA
    Registered: 12/28/2013
    Posts: 927

    Re: tri-y header gaskets

    rbtconsultants wrote:

    We have ebay tri-y headers. I port matched the stock heads to the gasket that came with the headers. Now we think there is leak at the head on the drivers side. I'm thinking I'd like to replace with remflex. Any ideas on which of these would fit our motor?

    Thanks

    Bob

    I'd make sure the header flanges are flat and that there aren't any weld beads that are interfering w/ the seal.

    Cheap, Fast, Good:  Pick Any Two
     

    4/17/2015 9:55 PM  #9

    rbtconsultants
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    Re: tri-y header gaskets

    They are rectangular. 3003 look like they could fit. But so do 3017, 3028, 3031 and maybe even 3037. I'd hate to have to pull the headers and measure and then wait for gaskets to get shipped.

    I made sure the headers were straight and flush before we installed. I'm not 100% sure yet if the leak is in the manifold gaskets or at the collector. I'm just trying to get prepared.

    Thanks

    Bob

     

    4/17/2015 10:16 PM  #10

    barnett468
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    Re: tri-y header gaskets

    rbtconsultants wrote:

    They are rectangular. 3003 look like they could fit. But so do 3017, 3028, 3031 and maybe even 3037. I'd hate to have to pull the headers and measure and then wait for gaskets to get shipped.

    I made sure the headers were straight and flush before we installed. I'm not 100% sure yet if the leak is in the manifold gaskets or at the collector. I'm just trying to get prepared.

    Thanks

    Bob

    ok unfortunately if you dont know what you have then i wont reither . . the gaskets below are the smallest hole they make so they will seal but might be too small . . if you can figure out a way to cut graphite you could cut them to size.

    http://catalog.remflex.com/FORD_Header_Exhaust_Manifold_Gasket_p/3029.htm

     

    4/17/2015 10:28 PM  #11

    rbtconsultants
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    Re: tri-y header gaskets

    I was hoping maybe someone would know the sizes of the ports after they are port matched to tri y header gasket. I'm thinking they would fit stock 289 gasket size since the tri y header gasket was made for stock 289 so I'll likely go for ordering 3028 and 3029 and return one.

    Thanks,

    Bob

     

    4/17/2015 10:43 PM  #12

    barnett468
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    Re: tri-y header gaskets

    rbtconsultants wrote:

    I was hoping maybe someone would know the sizes of the ports after they are port matched to tri y header gasket. I'm thinking they would fit stock 289 gasket size since the tri y header gasket was made for stock 289 so I'll likely go for ordering 3028 and 3029 and return one.

    Thanks,

    Bob

    the ones i posted are 289 and non 5.0 302 gaskets

    not all tri y's are the same.
     

    Last edited by barnett468 (4/17/2015 10:44 PM)

     

    4/18/2015 8:13 AM  #13

    hmartin025
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    Registered: 4/01/2013
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    Re: tri-y header gaskets

    I made sure the headers were straight and flush before we installed. I'm not 100% sure yet if the leak is in the manifold gaskets or at the collector. I'm just trying to get prepared.
    Bob/quote]

    Bob, if the leak is at the exhaust port you will hear a tic tic tic sound, if at collector a constant exhaust leak noise!
    Good luck with your project....
    Howard
     

    Last edited by hmartin025 (4/18/2015 8:14 AM)

     

    4/18/2015 10:48 AM  #14

    rbtconsultants
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    Registered: 6/10/2013
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    Re: tri-y header gaskets

    Good point. Thank you. It's definitely a tic tic sound.

    Bob

     

     

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