Don't take this the wrong way... but why did they go with the bigger bearing again when the old school P5's rear bearing were perfect! They lasted a lot longer than the newer ones do..

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you tell me and we'll both know :confused:
the 25.8mm bearing lasts every bit as long as the 25.4mm , its the 14.5x26mm that was silly ;)

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Hey Monty, sent you a PM with another question... :D

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http://i491.photobucket.com/albums/r...s/IMG_2645.jpg

Must be nice ta have those stickers

:cry:

The Houston Engine Service sticker makes my Ninja's run 20 degrees cooler! "Houstonova" is the man.

Come to think of it, my P5X was the one that had early bearing issues. At about the 5 gallon mark!:eek: You guys might think I'm crazy, but for a Nova 5 gallons is early to be having bearing problems.... Thanks for the info Monty...

Monty,

Received the motor today! Cade and I are going to break it in this weekend. The stickers are sweet too!

Thanks,

Jon

i usually replace them at about 2-4 gallons just for a safety :nod:

did i include the break in instructions ? i think i might have slipped on that one , sorry :smile:

ENGINE RUN IN


You will have to play with the needles a little bit and cover the head of your engine with a pit towel but do 3 heat cycles within the first tank at 210 degrees (2-3 min. intervals),

at idle on stand? yes.

then run it around on the ground gently only slightly rich keeping the temp between 210-230 (monitoring temps frequently ) careful not to let the engine get into its powerband , do this for about 1 full tank at a time but do not let it run out of fuel .do this for 3 tanks (cooling in between tanks), quarter throttle or so with short blips of more (full) throttle ..not high?slow pulls on the throttle in 30-40ft bursts .

then richen the needles a bit and run it about 180-200 on the track for 3 straight tanks monitoring temps frequently(every 2 laps) leaning it out until you can start to feel the powerband (check the plug at this point and let it cool down),

what am I looking for exactly on the plug ?make sure the plug still glows and looks new, if it looks all distorted pull it out as you dont want a plug filament to go through the engine

go back out on the track,(lean out slowly) when you get it tuned in to where its not totally screaming but you have enough power to make the jumps with a slight bog at full throttle and runs at about 230 , let it cool . go out and run the rest of the gallon til the power comes up and the temp drops instantly (i call it "dropping its nuts"). this process sometimes takes more than a full gallon . use a heat gun to heat to at least 180 before you start at each step hope this helps ya , pretty detailed

I have had great success with this method and longevity , monty
houstonsengineservice.com

Monty,

They were in there. After next week's ROAR race I am going to send our other +4 for bearing service and have you give it the once over before our next race. Ship out a few more stickers, hint hint.

Thanks,

Jon