i kinda tried to hint around the way i break a new motor in no matter what engine ...im gonna try and list it as best i can ...i have broke engines in in different way especially when i first started with a sportwerks.26 which says crank it throw it down run it with much smoke coming out of pipe ....then i tried the method mentioned above from johnny cool guy ....because it was listed as do this for o.s. motors ...when people were not getting good longevity out of them ...i ended up finally after 5 motor break ins over the past 2 years with this ...it works it is sound and i have never had a motor that blew up prematurely ....here it is
----wrap the head in aluminum foil and a cut sock
----dont touch the stock settings before you try to start it
----if it doesnt start lean the lsn an hour then try again ...and repeat ....if it doesnt start after a total of 1/4 turn lean ...check things out you may have another problem
----once it starts keep a very close eye on the temp ...
----as soon as the temp reaches 200 degrees or over let it idle for about a minute
----shut it off and drop the flywheel to bdc ....
----let cool all the way back to ambient temp
----do this twice ...thats 2 super quick heat cycles
----crank motor and let idle at a temp that is acceptable for your motor ...
grp 180-200 range , gotechs 200-240 range
----idle 2 tanks this way keeping the temp at your certain temp for your engine ....
--- you will definitley have to richen and lean the needles to keep it at this temp /////be sure to keep track of how much you turn each needle and which way you turn it .....with the grp i cant say that you would need to touch the hsn ....just the lsn .....
----after the idle tanks throw it down and run 4 tanks
tank 1 ....1/4 throttle blips no longer than 1 second blips ....then 1/2 throtlle ...then 3/4 throttle ...then full throttle ....temp the engine very frequently every 4-5 passes by you ...and adjust needles to keep temp in your certain range ....
---after that hit the track ....keep a close eye on it for the first 3/4-gallon of fuel ....it will be golden .....it sucks having to do this ...but if you do it will pay dividends down the road .....

here is a link to some of the best info i have ever read on tuning breaking in and some issues that can come up due to a motor not being tuned correctly ....


http://mrcr.ca/Documents/Ron%20Paris...ral%20Tips.htm

ron paris was the man ...his info is top notch ...and works if your stuff is in good running order .....sorry for the long post but theres a right way and a wrong way to do it .....hope this helps
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