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    Thread: Highest Compression on Factory?

    1. #1
      I'll keep it and add a turbo
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      Highest Compression on Factory?

      Hey guys, I finally found a performance guru to help me out with this engine of ours.
      Anyway he looked over the blue-print and found our compression was stock at 9.8:1. Which apparently he thinks is oddly high for such a low output of an engine.

      Anyway when discussing the options he said supercharging is out of the question for this engine and space - too much time and effort

      For Turbo - He said can be done, if we can get D19 Exhaust systems which have parts already done - we can fabricate the rest and add the charger, and do manual engine management (Which I have no-idea what that is and sounds scary)

      But what he honestly suggested surprised me - he said to do a "50 Shot of Wet".... as in NOS lines. The only thing he was concerned with is how high of a compression stock can handle. I have a CAI and Straight Pipe exhaust which will help with the added heat.

      Anyone know what our gaskets handle? I definitely do not want to double up gaskets if I can avoid it and most of all change anything in the cylinder



    2. #2
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      my 09 has 10.8:1 but iirc, the etec was only 9.5:1?


    3. #3
      I'll keep it and add a turbo
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      Doesn't the ecotech and the etec II, use the same internals I guess I really don't know.
      Just from the estimates him and I discussed (He is a friend and giving me VERY generous pricing). The NOS install is going to be cheaper then what I paid XaioGary for the headers

      But I think it may help my problem of struggling to merge on the highway because my car has like zero response as far as going faster

    4. #4
      Almost time to do my timing belt ontarian_frog's Avatar
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      The e-tec II and ecotec are completely different engines. And rabbit is right about the engine compression. The reason for the lack of output is the cams. I don't know about the ecotec, but I know the e-tec II runs out of steam at about 5500 rpm.
      I leased Pontiac Wave from September 2006 to August 2011.

    5. #5
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      So what exactly about the cams that is killing the ouput? And how do I go about addressing it?
      I mean I heard people getting lighter weight cams but is there more to it? And the big question is do guys
      think the cylinder will hold a 50 shot fine?from what it looks like it shouldn't really be an issue, but I have
      never played around with it before





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