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How much cast aluminum is under the hood?

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    #1

    How much cast aluminum is under the hood?

    Because I like the look of polished aluminum, I'd like to know what all is aluminum under the hood. I polished my distributor and it made a HUGE difference so I was wondering whether the valve cover is aluminum and the intake manifold, throttlebody, etc. So just wondering what all I can clean up and polish to make my engine look nice. Thanks.
    Tags: None
    #2
    you can polish any metal in the engine bay if you want. I polished my valve cover,engine block, intake manifold and a few other parts. check out my engine bay thread in my sig for pics.

    My Wiretuck/ Insane engine bay
    member ride thread
    11.86@120mph T66 turbo 612hp F22A
    DIVULGE MOTORSPORTS
    People can hate all they want, my f22 is faster than yours.
    I have literally been on this site for 10 years, I know what i am talking about!
    John 10:18 "No one takes it from me, but I lay it down of my own accord. I have authority to lay it down and authority to take it up again. "

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      #3
      http://cb7tuner.com/vbb/showthread.p...ighlight=typeG

      look through this thread, you'll get a lot of tips and ideas

      Click for my Member's Ride Thread
      Originally posted by Stephen Fry
      'It's now very common to hear people say, "I'm rather offended by that", as if that gives them certain rights. It's no more than a whine. It has no meaning, it has no purpose, it has no reason to be respected as a phrase. "I'm offended by that." Well, so fucking what?' —Stephen Fry
      Eye Level Media - Commercial & Automotive Photography: www.EyeLevelSTL.com

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        #4
        Oh wow, I didn't realize the block could be gotten that well. I thought that steel didn't polish as nicely as aluminum, but how did you get that done to the block? Sand it with a DA sander or a dremmel or something to get it clean?

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          #5
          The block is aluminum.






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            #6
            That surprises me. But the internals are all iron and the sleeves must be iron, correct? Otherwise the block wouldn't be so great for boosting.

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              #7
              The sleeves are iron. The internals are all aluminum.

              The block isn't really "great" for boosting. It's a strong design, but not exactly made for turbo. The compression is low, though... so resistance to detonation is high. It's forgiving when tuning, which makes it a good choice for turbo. The ringlands will go after a certain amount of abuse, however.






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                #8
                I didn't think pistons could be made of aluminum, doesn't aluminum warp from heat worse than iron/steel?

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                  #9
                  It depends on the type, I'm sure. But yes, our pistons are aluminum. Unless I am terribly mistaken (it wouldn't be the first time... but I generally don't say anything unless I'm quite sure) If you've ever had a chance to hold an F22A piston, you'd see that it's extremely light. It's a bit strange, really... it looks like it would be much heavier than it really is.

                  When it comes to forged pistons (which ours are not, but aftermarket upgrades should be), there are two varieties. High silicon and low silicon. High silicon pistons expand less when exposed to heat, and are good for NA engines. For turbo engines, they tend to be brittle. Low silicon pistons are best for turbo. They expand a bit, but are stronger. Low silicon pistons in a built turbo engine need added room in the bores, which results in a diesel-like cold idle. This does cause wear, and is one reason why turbo engines have a reputation for wearing out faster. Stronger iron sleeves are definitely a good idea in this case.


                  Sorry, I've gone WAY off topic here!






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