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Break-in Procedure


watkins

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Thats easy, Just take it nice and slow, dont rev her to the moon until you have 5-6 tanks of gas through her. Let all the new parts seat properly, make sure you mix your fuel/oil properly.

5-6 tanks!? That would take 40 hours of riding!!! Dude. Ok. Easier way of doing it is start it, let it run for a minute on idle then kill it. Let it cool re-torque head etc. Then run for 3 minutes on idle then kill it let it cool re-torque head. Run it idle for 5 minutes kill it let it cool re-torque head. Run it for 5 minutes about 10 times each time letting it cool for about 20-25 minutes in between running. Blip the throttle every now and then. Do this all while it's sitting still, don't ride it. After the 10th time, ride it around for an hour or two but don't overrev it. Then after that just ride like you normally would. Have fun. I did this the day of a race a few hours before we went to the track. Ended up 2nd place. It'll work good. Trust me.

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That should work fine. It's the bottom end that you have to think about breaking in too on a new motor. Here's a little clip I took from the eric gorr web page.

 

Breaking In a New Bottom End

 

The new lower end will need some patient break-in time. The best way is to let the engine idle for three separate 10-minute sessions with a 20-minute rest period between sessions. You don't need any extra pre-mix oil because the engine load is minimal when the engine is idling.

 

and here's for the top end

 

10) When you initially start the engine after a rebuild, manipulate the choke to keep the engine rpm relatively low. Once the engine is warm enough to take it off choke, drive the vehicle around on flat hard ground. Keep it under 2/3 throttle for the first 30 minutes. Two common myths for proper engine break-in are; 1) Set the engine at a fast idle, stationary on a stand. 2) Add extra pre-mix oil to the fuel. When the engine is on a stand it doesn't have any air passing through the radiator and it is in danger of running too hot. When you add extra oil to the fuel you are effectively leaning the carb jetting. This can make the engine run hotter and seize.

Edited by fixitrod
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