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  1. #1
    thompsdw's Avatar
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    Break in Question for Rebuilt Engine??????????

    04 RXP with the following mods:
    - Riva Front Air Intake
    - Riva Valve Train Upgrade with '06 Inconnel Valves
    - Greenwheel (Riva II) Wheel
    - Riva Gen II External Intercooler
    - 42# Injectors
    - 15/20R Impeller
    - Stock waterbox/RXPX Resonator

    Complete rebuild with the following:
    - New bearings all the way around (mains, rods, cam)
    - New rings on all cylinders

    I assume that I should follow the much previously discussed break in requirement listed here, correct???????? Basically every thing on this ski is new other than the cylinder liners and any internal wear.


  2. #2
    Mod less, ride more! troyheb's Avatar
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    I would take it pretty easy on it for about 2 hrs, then as they say "ride it like you stole it"

  3. #3
    West Texas RXP skoepp's Avatar
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    Let motor warm up good. Vary the throttle at different Rpms. Short runs to high rpm. After 2 hours change oil and run it like your going to ride it.

  4. #4
    mikelytle1077's Avatar
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    Quote Originally Posted by thompsdw View Post
    04 RXP with the following mods:
    - Riva Front Air Intake
    - Riva Valve Train Upgrade with '06 Inconnel Valves
    - Greenwheel (Riva II) Wheel
    - Riva Gen II External Intercooler
    - 42# Injectors
    - 15/20R Impeller
    - Stock waterbox/RXPX Resonator

    Complete rebuild with the following:
    - New bearings all the way around (mains, rods, cam)
    - New rings on all cylinders

    I assume that I should follow the much previously discussed break in requirement listed here, correct???????? Basically every thing on this ski is new other than the cylinder liners and any internal wear.
    double check the bottom oil drain plug on the mag side of the bottom case. mine somehow loosened and dumped all my oil 4hrs into a fresh rebuild. just saying if the engine is out i would take the plug out put some red loctite on it.

  5. #5
    shrabber's Avatar
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    Quote Originally Posted by skoepp View Post
    Let motor warm up good. Vary the throttle at different Rpms. Short runs to high rpm. After 2 hours change oil and run it like your going to ride it.

    Exactly right

  6. #6
    masta2000's Avatar
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    10 hours under 6000 rpm and vary the rpm, just finished my break-in and she runs like a champ

  7. #7
    JPR's Avatar
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    Quote Originally Posted by masta2000 View Post
    10 hours under 6000 rpm and vary the rpm, just finished my break-in and she runs like a champ
    that`s the worst way IMO. the rings need to seat in and that`s done in the first 20 mins. it needs all RPM range IMO but verry hot and clean oil.. but thats JMO ok

  8. #8
    A smart admits!A wicked excuses!An idiot insists! mitsakosgt's Avatar
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    Quote Originally Posted by troyheb View Post
    I would take it pretty easy on it for about 2 hrs, then as they say "ride it like you stole it"
    +1 From me.A couple hours of easyriding with vary the throttle and you will be just fine!

  9. #9
    shrabber's Avatar
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    Quote Originally Posted by jaffabas View Post
    that`s the worst way IMO. the rings need to seat in and that`s done in the first 20 mins. it needs all RPM range IMO but verry hot and clean oil.. but thats JMO ok
    Exactly you want to vary the throttle no learner's key no easy riding no dogging either throttle needs to vary across board ride it for 20-30 minutes varying let it cool down for 30 do it again repeat cycle 3rd time get on it wot for short 5 seconds etc

  10. #10
    masta2000's Avatar
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    there are books and articles written that support both arguments. truth is nobody wants to take the time to do ten hours of slow driving. just as an example though my buddy had gotten his motor rebuilt and did a few hours (3-4) and then drove it like a madman, the motor blew again, figured it was a fluke and did the same thing with the second rebuild and the motor blew again. the third time he didnt take a chance and did the ten hours like the mechanic told him; and it's been fine since. after he told me that story i just did the time.

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