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The Great e30 Trivia Game Thread. -- Retired

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    #61
    FPR, Valve cover, Cam, valve springs ?

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      #62
      FPR, Valve cover, Cam, valve springs ?
      These components are not all specific to the head, and the cam is different. However, I'm looking for something a bit more specific on the springs.
      Driving is the only way to go faster....

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        #63
        Originally posted by modifiede30
        FPR, Valve cover, Cam, valve springs ?
        These components are not all specific to the head, and the cam is different. However, I'm looking for something a bit more specific on the springs.
        THey only used single valve springs instead of double.

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          #64
          e cam used only part of the journals and the super eta head doesn't have oil passages drilled for the unused journals.
          w

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            #65
            Originally posted by trent
            Originally posted by modifiede30
            FPR, Valve cover, Cam, valve springs ?
            These components are not all specific to the head, and the cam is different. However, I'm looking for something a bit more specific on the springs.
            THey only used single valve springs instead of double.
            I'm pretty sure they used dual valve springs since the rpms were raised for the eta. I think around 6000rpm the e valve springs will start to float, but i'm not sure...

            Good call on the 4 bearing cam only needing 4 oil journals.
            Nick

            87 325 5MT
            02 IS300 5MT

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              #66
              Nick: Super-Etas have single valve springs.
              Tenured Automotive Service Professional - Avid BMW Enthusiast

              Vapor Honing & E30 ABS Pump Refurbishment Service
              https://mtechniqueabs.com/

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                #67
                e cam used only part of the journals and the super eta head doesn't have oil passages drilled for the unused journals.
                Actually, the super eta head uses all 7 cam journals and all are drilled. The head castings are identicle to an "i" casting.

                Trent was the first to really nail the valve spring portion of the question so its his turn. The outer valve springs are actually the same part as an "i" outer valve spring. Its just missing the inner spring. The cam is the only other difference. Although its an eta cam, the journals are all there, and all are drilled for oil.
                Driving is the only way to go faster....

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                  #68
                  Nick: Super-Etas have single valve springs.
                  Your call Jordan, but I think Trent was more accurate given the cam difference was already answered.
                  Driving is the only way to go faster....

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                    #69
                    Originally posted by modifiede30
                    Nick: Super-Etas have single valve springs.
                    Your call Jordan, but I think Trent was more accurate given the cam difference was already answered.
                    I'm not playing... just making sure info is straight.
                    Tenured Automotive Service Professional - Avid BMW Enthusiast

                    Vapor Honing & E30 ABS Pump Refurbishment Service
                    https://mtechniqueabs.com/

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                      #70
                      Okay Jordan, then Trent it is. Go for it Trent.
                      Driving is the only way to go faster....

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                        #71
                        What is (roughy) the rate in lbs/inch for an "i" valve spring combination (big and little spring)?

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                          #72
                          Originally posted by trent
                          What is (roughy) the rate in lbs/inch for an "i" valve spring combination (big and little spring)?
                          Great...looks like i killed this thread. Sorry for the stumper guys. The spring comination averages 190-210 lbs/inch.

                          HTH -- WHOEVER ASKS THE NEXT QUESTION FIRST GETS TO ASK THE NEXT QUESTION :)

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                            #73
                            What were the names of the 3 positions of the rear wing spoiler on the 2.5 Evolution Sport M3?

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                              #74
                              16*7.5

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                                #75
                                and silver

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