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a4 EM markings?

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    #1

    a4 EM markings?

    Ok guys if I find an exhaust manifold that is not on the motor is there any stamps or markings that will let me know for sure that it is the a4 EM? I searched and could not find it in any other threads but if it is then please link me.lol thanks guys
    Tags: None
    #2
    It's more of a visual thing.

    both a4 and a6 exhaust manifolds are 4-2-1. a6 are cast whereas a4 are tubular.

    take a look here:

    http://www.cb7tuner.com/vbb/showpost...&postcount=233
    Originally posted by deevergote
    These cars will never be the best at anything, but they're pretty damn good at everything.

    92ex CB7<-SOLD 93ex CB9shiftingshift73C10

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      #3
      Perfect that's exactly what I needed to see.

      Comment

        #4
        I know you didn't ask but if I were you I would just buy the generic one off of eBay. The F22A4 manifold is so old now it's in pretty rough shape wherever you'll find one. The aluminized steel header on eBay will discolor after a while but it's a slightly better design than the F22A4 header and when you replace the cheap gaskets with MLS and metal o-ring gaskets you have a great header that cost you just a little bit more than what a junkyard was going to charge you for that 20 year-old piece of scrap. If you insist on going OEM though, the A4 is a great choice.
        My Members' Ride Thread - It's a marathon build, not a sprint. But keep me honest on the update frequency!

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          #5
          If I went with the after market header would out be a good idea to wrap them?

          Comment

            #6
            Yes you do not want all that heat in your bay especially if you have a short ram air.

            Rather be safe than sorry.

            Comment

              #7
              Cool thank you guys and once again I love this damn site

              Comment

                #8
                wrapping a cheap header could cause it to crack. alot of people here do wrap and there fine but its something to consider. you could always modify the stock heat shield to fit or fabricate a new one out of sheet metal. cover the heat shield in thermo material

                also if the car is moving you dont have much heat under the engine bay. its always moving. it only matters if you spend a lot of time sitting still and in that case you dont really care how much power your engine makes.

                Comment

                  #9
                  Originally posted by Dani Filth View Post
                  wrapping a cheap header could cause it to crack. alot of people here do wrap and there fine but its something to consider. you could always modify the stock heat shield to fit or fabricate a new one out of sheet metal. cover the heat shield in thermo material

                  also if the car is moving you dont have much heat under the engine bay. its always moving. it only matters if you spend a lot of time sitting still and in that case you dont really care how much power your engine makes.


                  LOL Good point man. I have 800whp sitting in down town traffic

                  Comment

                    #10
                    that wasnt my point. my point is that the only time the underhood temps get hot enough to really affect power with a short ram intake is when your sitting still. as soon as you start moving the temperature drops alot

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                      #11
                      so what makes the cheap headers crack? is because the metal cannot expand like it needs to do it is wrapped

                      Comment

                        #12
                        because wrapping the header holds more heat in
                        which is what you want but it puts more strain on the metal

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