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Thread: Anyone got 2009/2010 Rsv4 cylinder heads for sale?

  1. #1
    apriliaforum prov-nov
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    Anyone got 2009/2010 Rsv4 cylinder heads for sale?

    Hi guys, my bikes cylinder heads are dead and I need some, anybody got any for sale?

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    apriliaforum Member
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    Hi, there was a pair on eBay recently for 200 quid, can't remember the condition or the article though.
    Sorry
    Marc

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    apriliaforum Junkie gazv4's Avatar
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    These?? Looks like they need a bit of work though


    : http://pages.ebay.com/link/?nav=item...756126&alt=web

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    apriliaforum prov-nov
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    Cheers chaps, will have a word with Griff and see if he could do out with them

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    apriliaforum expert drvacation's Avatar
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    why buy used heads and not refresh yours?

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    just another Aprilia fanatic amauri's Avatar
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    I'm seeing a lot of worn heads on the V4 engines coming in for rebuilds lately.

    1- badly worn EX valve guides
    2- scored/worn cam towers bearing surfaces.

    The guides can be replaced if you can have them custom made (Aprilia doesn't sell them).
    The cam bearing surfaces are not so easy, so far I've not been able to repair them satisfactorily.

    IN valves are very expensive and should not be lapped or ground in any way.
    EX valves are cheap and no problem to lap or grind.

    Also, keep in mind that there was a significant improvement made to the water passages starting with late production 2011 heads.

    If you are going to buy used heads, inspect them carefully.
    Never accept mediocrity, always demand competence.

    Certified Aprilia Moto Service in Southern California
    Call me at 714 892-4056 for appointment

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    apriliaforum prov-nov
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    Quote Originally Posted by amauri View Post
    I'm seeing a lot of worn heads on the V4 engines coming in for rebuilds lately.

    1- badly worn EX valve guides
    2- scored/worn cam towers bearing surfaces.

    The guides can be replaced if you can have them custom made (Aprilia doesn't sell them).
    The cam bearing surfaces are not so easy, so far I've not been able to repair them satisfactorily.

    IN valves are very expensive and should not be lapped or ground in any way.
    EX valves are cheap and no problem to lap or grind.

    Also, keep in mind that there was a significant improvement made to the water passages starting with late production 2011 heads.

    If you are going to buy used heads, inspect them carefully.
    Will 2011 heads fit straight to a 2009 motor amauri without any extra work?

  8. #8
    just another Aprilia fanatic amauri's Avatar
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    yes, and front head is same as rear head
    Never accept mediocrity, always demand competence.

    Certified Aprilia Moto Service in Southern California
    Call me at 714 892-4056 for appointment

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    apriliaforum expert drvacation's Avatar
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    Quote Originally Posted by amauri View Post
    I'm seeing a lot of worn heads on the V4 engines coming in for rebuilds lately.

    1- badly worn EX valve guides
    2- scored/worn cam towers bearing surfaces.

    The guides can be replaced if you can have them custom made (Aprilia doesn't sell them).
    The cam bearing surfaces are not so easy, so far I've not been able to repair them satisfactorily.

    IN valves are very expensive and should not be lapped or ground in any way.
    EX valves are cheap and no problem to lap or grind.

    Also, keep in mind that there was a significant improvement made to the water passages starting with late production 2011 heads.

    If you are going to buy used heads, inspect them carefully.
    maybe the answer on the cam bearing surface is to find some bearings that would fit the cam and bore the heads to fit the babbit bearings? cant find a good picture of top of cyl. heads is a line bore possible?

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    just another Aprilia fanatic amauri's Avatar
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    Quote Originally Posted by drvacation View Post
    maybe the answer on the cam bearing surface is to find some bearings that would fit the cam and bore the heads to fit the babbit bearings? cant find a good picture of top of cyl. heads is a line bore possible?
    Not enough room between the bolts holding the towers down to enlarge the bores and insert bearing half shells.

    My thought is to mill 002"-004" off both the tower caps and the top surface of the head.
    Then bolt the caps down and run a long reamer thru to make it round and of the proper diameter, similar to line boring an engine block.

    I've not been able to find a machine shop that can do that, without investing $$$ in custom made tools and alignment fixtures.
    Never accept mediocrity, always demand competence.

    Certified Aprilia Moto Service in Southern California
    Call me at 714 892-4056 for appointment

  11. #11
    apriliaforum expert drvacation's Avatar
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    Quote Originally Posted by amauri View Post
    Not enough room between the bolts holding the towers down to enlarge the bores and insert bearing half shells.

    My thought is to mill 002"-004" off both the tower caps and the top surface of the head.
    Then bolt the caps down and run a long reamer thru to make it round and of the proper diameter, similar to line boring an engine block.

    I've not been able to find a machine shop that can do that, without investing $$$ in custom made tools and alignment fixtures.
    what's the od on the cam bearing? if my motor guy can find an align hone that small he loves a challenge

  12. #12
    just another Aprilia fanatic amauri's Avatar
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    24.00 mm

    I have a worn out head I can send you to experiment with
    Never accept mediocrity, always demand competence.

    Certified Aprilia Moto Service in Southern California
    Call me at 714 892-4056 for appointment

  13. #13
    apriliaforum expert MishMashRSV4's Avatar
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    Quote Originally Posted by amauri View Post
    I'm seeing a lot of worn heads on the V4 engines coming in for rebuilds lately.

    1- badly worn EX valve guides
    2- scored/worn cam towers bearing surfaces.

    The guides can be replaced if you can have them custom made (Aprilia doesn't sell them).
    The cam bearing surfaces are not so easy, so far I've not been able to repair them satisfactorily.

    IN valves are very expensive and should not be lapped or ground in any way.
    EX valves are cheap and no problem to lap or grind.

    Also, keep in mind that there was a significant improvement made to the water passages starting with late production 2011 heads.

    If you are going to buy used heads, inspect them carefully.

    Amauri, what kind of mileage are you seeing this at? Im sure there is a range but a lowest to highest, or mean average would be interesting to know

  14. #14
    just another Aprilia fanatic amauri's Avatar
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    I don't think it is mileage related, some high mileage bikes don't have issues.

    The guides wearing is probably fuel, heat and lubrication related.
    The cam bearing surfaces/towers wear is usually the result of oil contamination from other issues.
    Never accept mediocrity, always demand competence.

    Certified Aprilia Moto Service in Southern California
    Call me at 714 892-4056 for appointment

  15. #15
    apriliaforum Junkie bstar360's Avatar
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    Quote Originally Posted by amauri View Post
    I'm seeing a lot of worn heads on the V4 engines coming in for rebuilds lately.

    1- badly worn EX valve guides
    2- scored/worn cam towers bearing surfaces.

    The guides can be replaced if you can have them custom made (Aprilia doesn't sell them).
    The cam bearing surfaces are not so easy, so far I've not been able to repair them satisfactorily.

    IN valves are very expensive and should not be lapped or ground in any way.
    EX valves are cheap and no problem to lap or grind.

    Also, keep in mind that there was a significant improvement made to the water passages starting with late production 2011 heads.

    If you are going to buy used heads, inspect them carefully.
    Did you mean water or oil passages?

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