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  1. #1
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Stock Rods v Molnar v Carillo

    Just doing a rebuild and wondered what peoples thoughts are on what rods I should run? I am going with CP pistons.

    This is what I was running before it broke a stock piston.

    2013 RXP260X
    V-tech reflash 9300 rpm limit. 36 degree. 1000cc Injectors
    Prop Speed 8900 rpm
    3 blade Prop
    68-140SC
    Big Cam and Springs/Retainers
    Aftermarket Intercooler and Hard Pipes

    Looking forward to hearing peoples thoughts. I've got Carillo's in my Turbo motor, but just wondering whether I need to go to that expense again.


  2. #2
    Redrockat's Avatar
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    Carrillo rods are very good and I've used them lots with no problems . The stock rods can take 400hp no problem after that the bolts will need replacing for peace of mind ( to arp ) . How did you break a piston ? Did it melt ?

  3. #3
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Quote Originally Posted by Redrockat View Post
    Carrillo rods are very good and I've used them lots with no problems . The stock rods can take 400hp no problem after that the bolts will need replacing for peace of mind ( to arp ) . How did you break a piston ? Did it melt ?
    #1 lost a piece off the top of it at the exhaust pocket.

    #2 and #1 both with signs of hot pistons at each valve pocket.

    It ain't lean. It's just the stock pistons limit.

  4. #4
    Redrockat's Avatar
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    Will you post a pic of the piston . Will be nice to see . That's if you have a pic .

  5. #5
    Redrockat's Avatar
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    I'm doing the 300 charger with the 142mm wheel so might as well pull motor and drop in a set of pistons .

  6. #6
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Broken Piston

    Quote Originally Posted by Redrockat View Post
    Will you post a pic of the piston . Will be nice to see . That's if you have a pic .
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  7. #7
    Steve-m31164's Avatar
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    Ive got stock rods and bolts in mine Mark

  8. #8
    Redrockat's Avatar
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    Yes I've seen that damage to the pistons lots and 99% the pto / flywheel side piston .
    I've got the same mods "68-140" on stock rods and they work well ... What power does a 68-140 ski make ? You will get peace of mind installing h beam rods and both cp and molnar rods are good . Price of a block vs conrods ... but as I said I've had great results with the stock rods .

  9. #9
    Redrockat's Avatar
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    I see a problem on piston 2 and 3 ... looks like you are hitting the valves look at the pockets there are additional indentation in the pockets . What cam are you using ? Lots more lift ? What springs and retainers ?

  10. #10
    Bob 1tommygunner1927's Avatar
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    Quote Originally Posted by RXP244 View Post
    Just doing a rebuild and wondered what peoples thoughts are on what rods I should run? I am going with CP pistons.

    This is what I was running before it broke a stock piston.

    2013 RXP260X
    V-tech reflash 9300 rpm limit. 36 degree. 1000cc Injectors
    Prop Speed 8900 rpm
    3 blade Prop
    68-140SC
    Big Cam and Springs/Retainers
    Aftermarket Intercooler and Hard Pipes

    Looking forward to hearing peoples thoughts. I've got Carillo's in my Turbo motor, but just wondering whether I need to go to that expense again.
    Too much ignition timing for the fuel used. You will have the same results using CP's.

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