Crank Keying Crank, Pulley and Spockets

Discussion in 'MZR Knowledgebase' started by GCPhotographers, Oct 8, 2017.

Watchers:
11 users.
  1. Maisonvi

    Maisonvi Silver Member

    Joined:
    Feb 10, 2016
    Posts:
    1,252
    Trophy Points:
    113
    Location:
    South Haven, MI
    Ratings:
    +1,627 / -0
    Im 500+ whp and just friction washered. But looking at it when I did it I would have had to spend a whole lot more than $90 to have it done. That and my block was already assembled by a builder. Would I have liked it keyed? Of course. Is it needed? No, just a nice thing to have for both a slim chance of issue, and if you ever have to take it apart again.
     
  2. GCPhotographers

    GCPhotographers Greenie Member

    Joined:
    Mar 21, 2016
    Posts:
    356
    Trophy Points:
    43
    Location:
    SoCal
    Ratings:
    +142 / -1
    $90 dam...In Cali, the cheapest was 300$ for the set
     
  3. Maisonvi

    Maisonvi Silver Member

    Joined:
    Feb 10, 2016
    Posts:
    1,252
    Trophy Points:
    113
    Location:
    South Haven, MI
    Ratings:
    +1,627 / -0
    Yeah I was looking at $300+ as well

    Sent from my SM-G900V using Tapatalk
     
    Maisonvi, via a mobile device, Oct 15, 2017
    #43
  4. djohns

    djohns Silver Member

    Joined:
    Feb 17, 2016
    Posts:
    823
    Trophy Points:
    93
    Location:
    Plainfield Il
    Ratings:
    +868 / -0
    I would probably even pay $300 since like I said earlier I'm retarded so the more safety/protection I can get the better.
     
    djohns, via an iPhone, Oct 15, 2017
    #44
  5. Solarsurge

    Solarsurge Gold Member

    Joined:
    Jun 9, 2018
    Posts:
    186
    Trophy Points:
    43
    Location:
    Richmond, VA
    Ratings:
    +207 / -0
    Just adding some VERY important information for anyone who might read this down the road. IF you go to your local machine shop to get your crank keyed, there's like a 99% chance they're going to use a broach and a press to key your sprockets and you're gonna have a bad time. This is a *NORMAL* procedure for keying sprockets and will work perfectly fine for the crank pulley. However, our timing and oil pump gears are so hard and brittle they will crack before you can even broach 1mm into them. If they try carbide cutters they will radius the edges. The ONLY proper way I've seen so far is EDM cutting. That's how Massive Speed does it, how Speed Perf6rmanc3 does it, and how your shop should do it, too. If your shop doesn't do EDM cutting, find another shop.

    Ask me how I know:
    [​IMG]
     
    Last edited: Aug 3, 2018
    • Like Like x 11
  6. Fstrnyou

    Fstrnyou Greenie Member

    Joined:
    Sep 3, 2016
    Posts:
    14
    Trophy Points:
    3
    Location:
    Rock Hill, SC
    Ratings:
    +10 / -0
    My build: keyed by SP63, pinned by me.
    The keying on mine was slightly off too. Sensor fully seated to one side was almost perfect alignment. I figure it's off by about 1 degree.
     

    Attached Files:

    Fstrnyou, via a Samsung mobile device, Aug 16, 2018
    #46
    • Like Like x 1
  7. Solarsurge

    Solarsurge Gold Member

    Joined:
    Jun 9, 2018
    Posts:
    186
    Trophy Points:
    43
    Location:
    Richmond, VA
    Ratings:
    +207 / -0
    Further fuck-up to add to the above cracked sprockets. The same shop that cracked the sprockets also apparently keyed the crank upside down and I just now noticed after a week of trying to figure out why my new built motor wouldn't start. The keyway should be at top dead center of cylinder 1/4 on the crank, and the bolt hole in the crank pulley should be at 180 degrees from the keyway (on the bottom). NOT on the same side, like these morons did.[​IMG]
     
    • Like Like x 2
  8. Maisonvi

    Maisonvi Silver Member

    Joined:
    Feb 10, 2016
    Posts:
    1,252
    Trophy Points:
    113
    Location:
    South Haven, MI
    Ratings:
    +1,627 / -0
    Damn, thats some rough shit.
     
  9. Littleloogy

    Littleloogy Recovering Speed Addict Platinum Member

    Joined:
    Feb 10, 2016
    Posts:
    753
    Trophy Points:
    93
    Location:
    Ripon, CA
    Ratings:
    +1,071 / -0
    That sucks, but can’t you just pry the timing teeth apart from the pulley and turn that 180 degrees as press it back on with your manly thumbs? Should still work, no?


    Sent from my iPhone using Tapatalk Pro
     
    Littleloogy, via a mobile device, Sep 19, 2018
    #49
  10. Solarsurge

    Solarsurge Gold Member

    Joined:
    Jun 9, 2018
    Posts:
    186
    Trophy Points:
    43
    Location:
    Richmond, VA
    Ratings:
    +207 / -0
    That bolt hole being in the correct location serves several functional purposes including, but not limited to, knowing what degree my crank is at without putting screw drivers in my cylinders. An upside down crank pulley does not.


    Sent from my iPhone using Tapatalk
     
    Solarsurge, via a mobile device, Sep 19, 2018
    #50
  11. Littleloogy

    Littleloogy Recovering Speed Addict Platinum Member

    Joined:
    Feb 10, 2016
    Posts:
    753
    Trophy Points:
    93
    Location:
    Ripon, CA
    Ratings:
    +1,071 / -0
    That is true and drilling taping a new hole in the timing cover would be a big pain in the ass and confusing to anyone who works on your engine in the future. Just was throwing ideas out there man.


    Sent from my iPhone using Tapatalk Pro
     
    Littleloogy, via a mobile device, Sep 20, 2018
    #51
Loading...

Share This Page

Users Viewing Thread (Users: 0, Guests: 0)