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Cam sizing for a gt35

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    Cam sizing for a gt35

    I found this company that makes custom cams for m20s and they seem extremely well priced. I just sent them a message regarding getting a regrind mimicking the vac cam. From what I gathered these were the cam specshttp://www.catcams.co.uk/acatalog/info_11.html


    I was wondering what kind of cam sizing would work well for that large of a turbo. That being said ill probably set my redline relatively low because I have OEM springs...

    Any feedback regarding cam sizing would be much appreciated.

    #2
    Just an update these guys gave me a quote for $189 to regrind the above specs! They also hear treat it afterwards. So basically I can the same performance for $650 dollars cheaper. Am I living in a fairytale or did I just hit the jackpot?

    This is the company I intend on using. I guess the question still remains... are these the best specs for this turbo size?

    http://www.topendperformance.com/

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      #3
      Just pulled my cam, Iíll let you know how this goes! Turn around time is 2 weeks




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        #4
        Interested! Thanks for the info

        1991 325iS turbo

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          #5
          They just finished the cam yesterday and are shipping it back today. Total was $60 for shipping both ways and $185 for machine shop costs. Super knowledgeable guys, they seem to do a High rpm NA cam grind and the turbo grind. Iíll take a picture when I get it back. Also, if you donít want a regrind I think they do fresh cams for $325ish


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            #6
            it would be more useful to install it in a head and plot it out the valve motion vs crank angle. all these companies offering m20 cams regrind or new cores and as a customer you have no idea of what youre actually going to get
            89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

            new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

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              #7
              Just received the cam in the mail! Looks decent. The one thing I learned is that itís actually coated with something rather then reheated..

              At the end of the day Iím happy I could near match other more expensive cams for much less money. If I have any further issues with the cam Iíll respond to this thread.

              Customer service was awesome, took about 3 weeks to get it back. Enjoyable company to work with and it seems like they have some many a bmw m20 cam.

              Cheers!







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                #8
                What is it costed with ? Might just be parkerised
                89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

                new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

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                  #9
                  Honestly I have no idea. If I were going to do this again I wouldnít get their regrind, but instead just get a custom one from them for like $350-$400


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