What are these black spots on the exhaust gasket.
#1
What are these black spots on the exhaust gasket.
I am wondering if there were supposed to be black holes there.
Were there supposed to be cutouts there?
I know when I first put the header on there. It was quiet,but it got louder and louder, untill I get fed up and took it off.
Please somone update me on the information.
nick-
Were there supposed to be cutouts there?
I know when I first put the header on there. It was quiet,but it got louder and louder, untill I get fed up and took it off.
Please somone update me on the information.
nick-
#4
I had the flat side against the engine, was that wrong? Also, I am gonna order some new flanges. I am going to buy another header one day, The car doesent move but once, every two weeks. I checked the compression while the header was off, and it accedintly started up. : )
I am wondering if the exhaust header shouldve had those ports or something. Does anybody know where I can get the same bolts and washers. I dont really want to buy them from lowes. they seem to strip out easily. I want heavy duty nuts.
I am wondering if the exhaust header shouldve had those ports or something. Does anybody know where I can get the same bolts and washers. I dont really want to buy them from lowes. they seem to strip out easily. I want heavy duty nuts.
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#9
Rockn' The Galant
Join Date: Jan 2005
Location: Shreveport, LA
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So the exhaust manifold should have those two ports in it, or did Jose (the previous builder) use older (i.e. SA 12A) housings.
Also, Jose told us it was a jspec motor when I asked about a year ago...any difference in exhaust manifolds there? I know emissions are different over there...
Also, Jose told us it was a jspec motor when I asked about a year ago...any difference in exhaust manifolds there? I know emissions are different over there...
#10
Old Fart Young at Heart
iTrader: (6)
kgray may still have his SA mani that I took off when I installed his headers. I don't have one in the shop. I do know the earlier, 74-78, 13Bs had that port drilled and the 12A housings I have don't have the port drilled.
Installing a header will remedy the leaks
Installing a header will remedy the leaks
#14
http://www.mazdatrix.com/e6.htm
I have discoverd that all this time I have had an older 12A, I thought it was an 84 this hole time.
I have discoverd that all this time I have had an older 12A, I thought it was an 84 this hole time.
#16
Old Fart Young at Heart
iTrader: (6)
Yep, those are the older housings, pre-7 I believe. One option would be tap threads in the port, screw a bolt in, then cut it off flush with the housing. Easier way would be installing headers. Third option is order the Mazdatrix header flange, install longet studs and 2 gaskets.
#23
Lapping = Fapping
iTrader: (13)
I can't see the pictures you posted of your engine, but I can tell you it's got 76-'80 rotor housings. Those holes were for a thermal reactor. Just get a header that matches the chassis year of your car. Done. By the way, the header is longer than your exhaust manifold.
Trochoid, the intake manifold blocks the rectangular port on later engines, not the exhaust. While it's true the header kits sometimes come with an ACV blockoff kit, depending on which you get, it's only usefull if your intake manifold has the casting down there to cover the rectangle hole. The '79-'80 intakes did not have that casting.
Originally Posted by trochoid
All the header flanges I've seen block off the 2 ports you have and the rectangular port the later engines have. They usually have the same footprint that the gasket does.