How long would it take to ware in a 70's kit?

Just wondering how long it would take because I'm in the middle of my exams and I don't know when to fit it..

 

depense wat kiy if its cast thrn a couple hundred miles at half throttle to full throttle for alloy about an hour

 

would always run it in for at least a hundred miles to be an the safe side..

 

Why would you u do 100 miles when it only takes about hour but for a cast iron it would take about 250 miles

 

what so you do an hour straight?.. and you do 250 miles?.. lol wtf, you running at like 90 mph?.. and at LEAST

 

You ovb no fuck all bwt bikes ....if its a cast iron then you do around 200 miles an if it's an alloy you have to do a few heat cycles

 

no clearly not, considering ive been racing bikes since i was 5 you tit. when you said " it only takes about hour but for a cast iron it would take about 250 miles " what so you do 250 miles in an hour?.. and when i say i would do 100 miles at least it means minimum, and i said to be on the safe side.. you may not need to for an alloy but it does no harm. you clearly are one special kid.

 

Your the 1 that don't understand English and why would you do "100 miles at least" when you can do 10 and tht is it ...

 

maybe if you went to school and could write proper english i would understand it, well you keep changing your mind.. uve gone from an hour to 10 miles?.. you dont even know you din.

 

if

if u knew bwt bikes then u wud understand and i dint know i wa takin a fucking english exam u prick ....you warm the bike up on idle let it cool,,,,take it out for a short ride with no more than half revs then cool down ,,,then take it out and rag it and cool down ,,,which will take around an hour ,,,fucking dipshit

 

no because you write like a spastic, and unfortunately i dont understand spastic.. there is many different ways to run a bike in, it also depends wether its air cooled or water cooled.. ive ran in plenty of motocross bikes and they have all been fine ive ran in my ped a few times and it seems to be working for me.. you clearly are to retarded to know that there is more than one way to run a bike in.

 

we

so have i ..iv done a bottom and top rebuild on a cr125 and ran it in fine ,,then a top ennd on an rm125 and that was fine and then a top end on a beta 250 trials and all have worked fine then have done countless topends on scooters and also bottom ends

 

well then you should surely know that there is more than one way to run a bike in, and leaving an air cooled to idle isnt necessarily the best thing to do as it wont be getting enough air to cool it properly.. supose everyone does things different upto you, dont mean to argue just sayin i always run my bikes in longer than needed..

 

To simplifie;

People say to run cast iron kits in for 200 miles, and aluminium kits (like motocross bikes) for a few 15 minute heat cycles.

On my YZ125 I warm it up, ride going up and down the rev range for 15 minutes and let it cool down again. Repeat 4 times and it's done. I did the same on my cast iron aerox cylinder, and it's fine. No scores, and just as much compression as it did when I first put it together.

People take running in way too seriously, if you do it for too long then your rings will seat poorly and you won't get good compression. Just do the heat cycles, and be gentle with it.

 

erm guys, if you were running it in for a hour, and it was 250 miles you'd be doing 250 miles a hour, is that not simple math? but on a serious note i have a doppler s7r aluminium kit and i took the piss with it right from the start, its been fine for months, i am now loosing power but i think its because im running the bike lean, with a 100 jet in a 21mm carb with pm reeds and a polini team 3 exhaust, i cant find any replacement rings for the bore, would athena rings fit? they make the bore?

 

http://www.shiny-red.net/tuning-guides/52-running-in-an-engine

 

Or buy a polini kit and rag it as soon as you fit it

 

Yea so basically I was right dip shit