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Thread: Crank Scrapers for 6G72?

  1. #1
    SKADOOSH!!! verified Feedback Score 1 (100%) J_Parker's Avatar
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    Crank Scrapers for 6G72?

    I've been looking for some parts for my Soarer for a while now, just to kill time (Whole other story) Anyways, I ran across a crank scraper for it and wondered if anyone is doing this for our engines?

    For some of you that don't know what they are or what they are for:

    As the cranks pick up in rotational speed, they create a vortex of wind inside the crank case causing the oil to "cloud" up at times. This leaves deposits of settling oil on the crank, supposedly increasing rotational mass, and that extra little bit of force for the crank to push though the cloud of oil at the worst of times. The point of the scraper is to simply remove the deposit by scraping it off (who knew), it also prevents the cloud of oil from making its way past the crank if positioned correctly. Although our oil pans come stock equipped with a baffle, is it likely that they're doing a good enough job of holding that extra little bit down? This is just a thought and question post so don't be overly critical on me.

    Here's some pictures of what they really are and the point of them.



    Although the one in those images is obviously way out of scale, you get the idea.

    Here is a site that supplier of these for our engines, they also have windage trays Mitsubishi If you scroll down about half way you'll see them for our engines (2 & 4 bolt)

    The windage tray really caught my eye as something useful though. it not only works as a pre-screen for the oil sump, but it drastically reduces the speed of the oil "flinging" off of the crank, which can produce cavitation and aerating of the oil in the pan.
    Last edited by J_Parker; 02-24-2011 at 01:04 AM.
    Photobucket

  2. #2
    Now with more poop-smear Not Verified Feedback Score 8 (100%) IPD's Avatar
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    subscribed...just to hear if anyone is using this....poor-man's dry sump.

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    SKADOOSH!!! verified Feedback Score 1 (100%) J_Parker's Avatar
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    I was going to pick them up seeing as I still have the pan off my engine right now... All assuming that they would be a worthwhile investment

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    I have both the windage tray and the scraper for my next build, but don't have any experience with it yet. I have lots of experience using such systems on a variety of drag race only engines. Typically, a domestic V-8 gains 15-30 HP with a properly designed/installed scraper and windage tray. Just as importantly, it controls the oil and helps stabilize the oiling system by directing flow into the sump and keeping the level above the pick up at a maximum. Well worth the price, imho. Just my 1.5 cents worth.

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    Advanced Tech? verified Feedback Score 0 i3igpete's Avatar
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    That scraper and tray were coordinated by one of our members wayne (boostaddict).
    Maddog Performance Engineering

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    Now with more poop-smear Not Verified Feedback Score 8 (100%) IPD's Avatar
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    so should i get them, milt?

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    Member Not Verified Feedback Score 7 (100%) mb3000's Avatar
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    Subscribed.

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    Twin Turbo verified Feedback Score 5 (100%) GTOJOE's Avatar
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    Interesting. Subscribed.

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    I was reading this during lunch. I have seen these before for our cars, but never seen anyone use one. Tho who knows, I didn't open up their block to check it out.

    But im in for some info.
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  10. #10
    Why? Because Race Car. verified Feedback Score 0 akotten's Avatar
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    Isn't this why people have their cranks "knifed"?
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