What is the best way to break in a new ening?
#16
Originally posted by Team-RTR
i used the cyrul method once. it consists of you richening the motor at WOT until it flames out. at this point you are upto 4 or 5 turn out from factory settings which means your engine is running at about 40-50C. i did not mean to offend you in any way afm i am just pointing out something that i noticed with the break in method you have posted by josh cyrul which i have found to be successful, but i am highly interested in your prescribed methods of running at race temp.
i used the cyrul method once. it consists of you richening the motor at WOT until it flames out. at this point you are upto 4 or 5 turn out from factory settings which means your engine is running at about 40-50C. i did not mean to offend you in any way afm i am just pointing out something that i noticed with the break in method you have posted by josh cyrul which i have found to be successful, but i am highly interested in your prescribed methods of running at race temp.
BTW the engine runs cooler at WOT because you are getting more cooling mixture, more air and oil into the engine........so to avoid running below 90ºC, which also damages engine, you have to cover the cooling head with something.
AFM
#18
Start your engine and allow it to warm up with several short ½ throttle “blips”. Once your engine has some temperature in it you can begin the break-in process. Start by opening the top end needle 1 full turn. Open the carburetor to full throttle and hold it there. Open the top end needle until the engine flames out. From here, close the top end needle ¼ turn and restart the engine again running it at full throttle. Run the engine full throttle for 3 tanks and shut the engine down.
Allow the engine to cool for 15-30 minutes. Once the engine has cooled down, run through the same process again for two additional tanks. On the third tank close the top end needle by ¼ of a turn. Instead of holding the engine at full throttle, start using the throttle by doing 2-3 second bursts of full throttle. Once you have done this for ½ of the tank close the top end needle another ¼ of a turn and continue throttling the engine. Continue closing the top end needle ¼ turn per every ½ tank of fuel. Do this until you have run a grand total of 8 tanks through your engine and then shut the engine down.
Allow the engine to cool for 15-30 minutes. Once the engine has cooled down, run through the same process again for two additional tanks. On the third tank close the top end needle by ¼ of a turn. Instead of holding the engine at full throttle, start using the throttle by doing 2-3 second bursts of full throttle. Once you have done this for ½ of the tank close the top end needle another ¼ of a turn and continue throttling the engine. Continue closing the top end needle ¼ turn per every ½ tank of fuel. Do this until you have run a grand total of 8 tanks through your engine and then shut the engine down.
Also for the first 3 tanks, am I shutting my engine down between tanks to cool, or refueling while the engine is running?
Could someone explain these 2 paragraphs in a little more detail for me? Thanks.
#19
Originally posted by DJ_Normal
The second paragraph seems to contradict the first. It says run three full tanks at WOT with the top needle close 1/4 turn. Ok I got that. But in the next paragraph, it says repeat the process for 2 additional tanks, but on the third start blipping the throttle and doing short bursts. My thing is, shouldn't that read the 5th tank?
Also for the first 3 tanks, am I shutting my engine down between tanks to cool, or refueling while the engine is running?
Could someone explain these 2 paragraphs in a little more detail for me? Thanks.
The second paragraph seems to contradict the first. It says run three full tanks at WOT with the top needle close 1/4 turn. Ok I got that. But in the next paragraph, it says repeat the process for 2 additional tanks, but on the third start blipping the throttle and doing short bursts. My thing is, shouldn't that read the 5th tank?
Also for the first 3 tanks, am I shutting my engine down between tanks to cool, or refueling while the engine is running?
Could someone explain these 2 paragraphs in a little more detail for me? Thanks.
3 tanks in two lots... 1set of tanks run 3 tanks straight without shutting the engine down.
After the 3 are done shut it down and let it cool.
Then repeat the same thing again for another 3 tanks but on the 3rd tank of the second lot (6th tank) start to bleep the throttle in 2 sec intervals.
Then let it cool and your done then just run the car round the track and tune it to race settings.
Be sure to refuel the tanks Quick as the engine will rev high when you open the tank.
I spoke to Josh who wrote the run in procedure.
Hope this helps
#21
Originally posted by TRAJ
Yes that is what i thought but he means the 3rd tank in the second lot (6tanks broken into 2 lots 3/3).
3 tanks in two lots... 1set of tanks run 3 tanks straight without shutting the engine down.
After the 3 are done shut it down and let it cool.
Then repeat the same thing again for another 3 tanks but on the 3rd tank of the second lot (6th tank) start to bleep the throttle in 2 sec intervals.
Then let it cool and your done then just run the car round the track and tune it to race settings.
Be sure to refuel the tanks Quick as the engine will rev high when you open the tank.
I spoke to Josh who wrote the run in procedure.
Hope this helps
Yes that is what i thought but he means the 3rd tank in the second lot (6tanks broken into 2 lots 3/3).
3 tanks in two lots... 1set of tanks run 3 tanks straight without shutting the engine down.
After the 3 are done shut it down and let it cool.
Then repeat the same thing again for another 3 tanks but on the 3rd tank of the second lot (6th tank) start to bleep the throttle in 2 sec intervals.
Then let it cool and your done then just run the car round the track and tune it to race settings.
Be sure to refuel the tanks Quick as the engine will rev high when you open the tank.
I spoke to Josh who wrote the run in procedure.
Hope this helps
Still very hesitant about the WOT especially the first few tanks as I might break the rod though.
#22
I understand what your saying it maybe just depends on the quality of an engine and its internals.
The Novarossi based engines such as RB and nova ofcourse dont have a problem with this method.
My m8s motor has been run for about 5meets and still has lots of compression and no rod play.
Worked fine for me and the engine flies!
The Novarossi based engines such as RB and nova ofcourse dont have a problem with this method.
My m8s motor has been run for about 5meets and still has lots of compression and no rod play.
Worked fine for me and the engine flies!
#23
you talking about my RB there Mr. TRAJ or do you have some more frends i dunno about?
#24
lol you guessed it its yoooo
#25
Tech Master
iTrader: (1)
Re: WOT - Wide Open Throttle???
Originally posted by danjoy25
Can someone confirm this. During breaking in a engine or heat cycling, It says to run the engine full throttle for 2-3 minutes (WOT). Is this full throttle all the time once engine temp is hot enough or just revving it to full throttle every few seconds?
Can someone confirm this. During breaking in a engine or heat cycling, It says to run the engine full throttle for 2-3 minutes (WOT). Is this full throttle all the time once engine temp is hot enough or just revving it to full throttle every few seconds?
#26
luie your ass is gana be handed to you on a platter on sat by some RRR power buddy oh yeah!
#28
Super Moderator
iTrader: (239)
Re: WOT - Wide Open Throttle???
Originally posted by danjoy25
Can someone confirm this. During breaking in a engine or heat cycling, It says to run the engine full throttle for 2-3 minutes (WOT). Is this full throttle all the time once engine temp is hot enough or just revving it to full throttle every few seconds?
Can someone confirm this. During breaking in a engine or heat cycling, It says to run the engine full throttle for 2-3 minutes (WOT). Is this full throttle all the time once engine temp is hot enough or just revving it to full throttle every few seconds?