Ok, This is just a question i had for a while. Lets say you build a engine with 14:1 compression. Or some engine that will require C16 or something like that to run. Do people break those motors in? Because that kind of gas is very expensive, so i highly doubt that there are people building those crazy engines like that for the track, and putting like 500 miles on the motor before taking it to the track. Can someone school me on this?

 

well sometimes engine builders will file the rings a little loose for race engines.....but we would heat cycle the engine for a few hours and then put the bitch on the the dyno and viola engine is broken in......try and do a few oil changes in between too

 

the only way to break in ANY motor is to run it hard as soon as you start it up. the best way to break it in is on a dyno when you go to tune the car. dont let the "take is easy for 500 miles" mentality fool you. the 500 mile thing was meant for cars back in the day that had lower tolerances on their motors and needed that many miles for the rings to seat. hope this helps! peace!

 

Sheeeit.A race motor is waring out every second its running.
A top fuel car breaks in the motor before every lap down the track.They call it a burn out.


Modified by RMF at 12:35 AM 6/24/2005

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RMF &raquo;</TD></TR><TR><TD CLASS="quote">
A top fuel car breaks in the motor before every lap down the track.They call it a burn out.</TD></TR></TABLE>

lol.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AllMotorRandy &raquo;</TD></TR><TR><TD CLASS="quote">the only way to break in ANY motor is to run it hard as soon as you start it up. the best way to break it in is on a dyno when you go to tune the car. dont let the "take is easy for 500 miles" mentality fool you. the 500 mile thing was meant for cars back in the day that had lower tolerances on their motors and needed that many miles for the rings to seat. hope this helps! peace! </TD></TR></TABLE>

 

This might not pertain to the subject but a close friend of mine went to RIT in NY and they used to test prototype honda/acuras on the facility. I remember him telling me that on the first intial start up of a new car they used to bang it off the rev limiter. They figured if its going to break it mine as well break now then later.

 

Lots of good replys.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AllMotorRandy &raquo;</TD></TR><TR><TD CLASS="quote">the only way to break in ANY motor is to run it hard as soon as you start it up. the best way to break it in is on a dyno when you go to tune the car. dont let the "take is easy for 500 miles" mentality fool you. the 500 mile thing was meant for cars back in the day that had lower tolerances on their motors and needed that many miles for the rings to seat. hope this helps! peace! </TD></TR></TABLE>

dont you want to let it run idle 10 to 15 mins and let it get to regular operating temperature before you run it hard?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EVOL &raquo;</TD></TR><TR><TD CLASS="quote">

dont you want to let it run idle 10 to 15 mins and let it get to regular operating temperature before you run it hard?</TD></TR></TABLE>

That would make sense to me.

 

chances are you used the quick break-in rings during the build so couple passes on the dyno seats the rings pretty good .. change out the oil and should be set. if you use the honda oem rings they take a while to seat.

so it all depends on the rings you use.

greg

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CHEETAH &raquo;</TD></TR><TR><TD CLASS="quote">chances are you used the quick break-in rings during the build so couple passes on the dyno seats the rings pretty good .. change out the oil and should be set. if you use the honda oem rings they take a while to seat.

so it all depends on the rings you use.

greg</TD></TR></TABLE>

So even if i do a street build. All i have to do it tune the car, and it will be ready to go?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Power Rev Racing &raquo;</TD></TR><TR><TD CLASS="quote">

So even if i do a street build. All i have to do it tune the car, and it will be ready to go?</TD></TR></TABLE>


bump would like to know also.

 

you break in the engine according to how it is built. engines that are tighter in clearances need to be ran alittle longer than ones with looser clearances.

shawn

 

break it in how you are gonna drive it , on our race motors we drive it on the dyno for about 10 min then we beat the **** out of it.

 

So what is the propper way to get piston rings to seat?

 

I totally believe in the beat the **** out of it as soon as its built theory. I know of a few bike engine builders and they would build an engine tune it and its done. beat it up lets go racing!!!!!!!!!!!!!!!!

 

a little trick to get the rings to seat fast ..... put it on the dyno runi the hell out of it and open a nos bottle ablout five feet from the intake opening !!! sounds crazy but it works &gt;&gt;&gt;&gt;&gt; learned that one from darren at R&D DYNO

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Power Rev Racing &raquo;</TD></TR><TR><TD CLASS="quote">

So even if i do a street build. All i have to do it tune the car, and it will be ready to go?</TD></TR></TABLE>

that is correct. you want to thrust the rings against the cylinder walls, which isnt accomplished by *****-footing around town untuned.

 

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Power Rev Racing &raquo;</TD></TR><TR><TD CLASS="quote">Ok, This is just a question i had for a while. Lets say you build a engine with 14:1 compression. Or some engine that will require C16 or something like that to run. Do people break those motors in? Because that kind of gas is very expensive, so i highly doubt that there are people building those crazy engines like that for the track, and putting like 500 miles on the motor before taking it to the track. Can someone school me on this?</TD></TR></TABLE>

Well this is what we do well after prepping the motor we fill her up with 91 octane put the car at a 1k 2k idle, Set air fuel to 16:1 and let her go for about 30min-1hr check temp etc. After that we Put her on the lift drain her of all here fluids. Then Lube her back up. Then we drain any of the 91 Octane left. Then we feel her up with some C16 and she is ready for the dyno. But everyone has thier different ways they like to do things this is just ours.

Well that sounded kinda funny!

 

I don't believe in running the **** out of any race car.What I do is ,Put it together correct.Then go over it to make sure everything is on and tight.Start it up,check for leaks .Then tune it.By then everybody should have all their stuff ready for the races .load up the car and go racing.Every minute its running,Is another minute
it has worn out.Now with the smooth bores the rings don't need to seat.If you need to seat the rings.I would find another place to bore and hone your stuff.

 

i pretty much agree to the method of starting it up, warming it up, and laying a
beat-down on that motors ***!
p.s.. i wouldnt trust the methods for ring seating from chilton or haynes service manuals. Haynes says to drive the car in 3rd gear till about 55-60mph and let off the throttle till you slow down to about 25mph and repeat 8-10 times. i have no idea if that really works or not, but i do know haynes wasnt building a race motor.

 

Sorry if this sounds retarded, but would you treat a brand spanking new car in the same manner?

Say you picked up a new car from Honda, can you just drive it as hard as you want, or will you need to baby it for a certain number of kms?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HOOKUPS &raquo;</TD></TR><TR><TD CLASS="quote">a little trick to get the rings to seat fast ..... put it on the dyno runi the hell out of it and open a nos bottle ablout five feet from the intake opening !!! sounds crazy but it works &gt;&gt;&gt;&gt;&gt; learned that one from darren at R&D DYNO </TD></TR></TABLE>
mmmmm R&D does that? Thats nice to know.


Modified by RMF at 4:17 PM 7/10/2005