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MV Augusta F4 Coolant Leak HELP

  1. #1
    Pescador de Ilusões Eddie's Avatar
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    MV Augusta F4 Coolant Leak HELP


    Posted for a Friend,

    My buddy Ozzy, playtwo, just had a slider installed to his 2012 MV Augusta F4. His mechanic called to let him now that the bike is leaking coolant from the frame slider bolt. The only thing on the topic I found was that he may have pierced the coolant jacket: Leaking coolant from engine bolt hole? - MVAgusta.net

    Anybody here have any suggestions? For starters I told him to stay put, check the oil and not start the bike. Any ideas? Easy/Hard fix? anybody had this issue before?

    Any help would be truly appreciate. He is trying to ride NYST with us on Sunday, but more importantly I think that he does not want to loose his engine.

    Thank you!!

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  2. #2
    Senior Member myzx6's Avatar
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    Re: MV Augusta F4 Coolant Leak HELP

    I'd put some teflon tape on the bolt threads and just keep an eye on it, if it were me.

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  3. #3
    Lifer Pittenger5's Avatar
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    Re: MV Augusta F4 Coolant Leak HELP

    Quote Originally Posted by myzx6 View Post
    I'd put some teflon tape on the bolt threads and just keep an eye on it, if it were me.
    For the love of God if you use this advice, replace the coolant with water.
    That said, its probably leaking behind the bolt anyway (I would think)

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  4. #4
    Pescador de Ilusões Eddie's Avatar
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    Re: MV Augusta F4 Coolant Leak HELP

    Thanks guys. He ended up taking it to cycle 128... apparently the Augusta mechanic is out this week. 150/labour hour I am told. Ouch. One expensive frame slider install. I am hoping that he will figure what's going on before the weekend and make it to NYST with us.

    Sent from my SAMSUNG-SM-G935A using Tapatalk

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  5. #5
    Super Moderator OreoGaborio's Avatar
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    Re: MV Augusta F4 Coolant Leak HELP

    It's totaled. Tell him to drop it off at my place and I'll find a scrap yard that'll take it.

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  6. #6
    High maintenance priss
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    Re: MV Augusta F4 Coolant Leak HELP

    Ouch. Mechanic isn't going to be able to do anything special. Either seal the end of the machined hole (or threads) really good or he's looking at buying a new cylinder. Might be able to plug the end of the hole w/ JB Weld or similar. Then cut the bolt down a bit to avoid bottoming out.

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  7. #7
    Pescador de Ilusões Eddie's Avatar
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    Re: MV Augusta F4 Coolant Leak HELP

    Quote Originally Posted by keeena View Post
    Ouch. Mechanic isn't going to be able to do anything special. Either seal the end of the machined hole (or threads) really good or he's looking at buying a new cylinder. Might be able to plug the end of the hole w/ JB Weld or similar. Then cut the bolt down a bit to avoid bottoming out.
    Makes sense. Thanks you sir. Will pass along.

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  8. #8
    Senior Member myzx6's Avatar
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    Re: MV Augusta F4 Coolant Leak HELP

    Quote Originally Posted by Pittenger5 View Post
    For the love of God if you use this advice, replace the coolant with water.
    That said, its probably leaking behind the bolt anyway (I would think)
    I assumed he was already running it with water because they are going to the track with it, but yea run it with water. Coolant is very slippery when it gets leaked on your tires, ask me how I know ( fucking Kawasaki putting a coolant reservoir right above the back tire)

    Lots of automotive engines have intake manifold and head bolts that go into the water jackets, Clean threads and silicone or teflon will seal it up just fine, just don't overtighten it because the sealer lubricates the threads.

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    Last edited by myzx6; 06-19-17 at 09:07 PM.

  9. #9
    Pescador de Ilusões Eddie's Avatar
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    Re: MV Augusta F4 Coolant Leak HELP

    Told him to call you Kian. Thanks

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  10. #10
    Changes come butcher bergs's Avatar
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    Re: MV Augusta F4 Coolant Leak HELP

    Quote Originally Posted by myzx6 View Post
    Lots of automotive engines have intake manifold and head bolts that go into the water jackets...
    Say what?

    Please name a few so I can be sure to stay far away.

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  11. #11
    Pescador de Ilusões Eddie's Avatar
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    Re: MV Augusta F4 Coolant Leak HELP

    Quote Originally Posted by myzx6 View Post
    I assumed he was already running it with water because they are going to the track with it, but yea run it with water. Coolant is very slippery when it gets leaked on your tires, ask me how I know ( fucking Kawasaki putting a coolant reservoir right above the back tire).
    Yeap. He is using water weter.

    Quote Originally Posted by myzx6 View Post
    Lots of automotive engines have intake manifold and head bolts that go into the water jackets, Clean threads and silicone or teflon will seal it up just fine, just don't overtighten it because the sealer lubricates the threads.
    Quote Originally Posted by butcher bergs View Post
    Say what?

    Please name a few so I can be sure to stay far away.
    Hey buddy!! Long time no see. Yeap, seems to be the case with the August. Strange right?

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