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  1. #1
    BR549's Avatar
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    Installing keyway ?

    Getting ready to do the keyway but have a question. Do I have to remove oil pump or can I leave on cover? Tried to search for instructions but didn't come up with much. Putting VF3's in also so oil lines loose.


  2. #2
    WATER WOODY's Avatar
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    Take the oil pump off.There is a slot on the pump shaft that goes into the end of your crank shaft and its VERY important to align them up BEFORE assembly.

  3. #3
    just GOT TO DO IT! great lakes gpr 1200's Avatar
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    If your not going to premix it is just as easy to take the oil pump off, just lay it aside, and do the vf-3s next. you will have everything off any how. I did mine in the ski with a mirror and a "rent a too kit " from ADVANCED AUTO parts. Use the harmonic balancer hit. it will even have the right bolts for the job. It is 100.00 but you get it back in the end, even the tax.

    When I did the vf-3s I used "copper coat" gasket spray on sealer, it is real sticky and held all the gaskets together while I bolted it up. but if you have to ever remove them It will be messy, I trade that for ease of putting it together

    Make sure you have all kind of small wire ties for those oil lines

  4. #4
    Moderator RX951's Avatar
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    3 Degree Keyway Install Position


  5. #5
    BR549's Avatar
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    Thanks for the fast help! One more ? I have the good gaskets IR started selling for the VF3's should I use sealer on these or install dry ?

  6. #6

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    i am curious about the 3 degree keyway stuff...what rpm range does this help the most with..and will it hinder the 3000-7800rpm powerband?am in the process of readin the other article.

  7. #7
    just GOT TO DO IT! great lakes gpr 1200's Avatar
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    Quote Originally Posted by BR549 View Post
    I use sealer on these or install dry ?
    I only use "copper coat " spray on to help hold them inplace during assembly. It is a spray on sticky sealant, It is like 8.00 a can at the auto parts store. I use three coats, Light coats, like painting, drying between each coat.

    Like I said. I only used it because it helps hold all three of the cage gakets in place. I am sure it is not needed. but the last place I want a leak is on my motor.

  8. #8
    just GOT TO DO IT! great lakes gpr 1200's Avatar
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    Quote Originally Posted by deereman View Post
    i am curious about the 3 degree keyway stuff...what rpm range does this help the most with..and will it hinder the 3000-7800rpm powerband?am in the process of readin the other article.
    I run a BB 1390 GK motor , used to be a 1200gpr with carbs. On my 1390 vf-3 and a keyway made it a monster, HUGE DIFFERANCE! I am not sure what ski you have.
    But it would advance you timmimg across the curve. I don't not much about efi skis. I believe they use a 3* keyway with a add on ignition. I am sure one of the gurus can answer this better.

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