New Engine Break-in (part 1)- Taiwan beauty Part 4

[stoneageman18]

mad thinking no one has wrote on this in like 1200 days. o;o. Braking the system xD

[xXUSMCGRIFFXx]

@stoneageman18 I second that

[marsdestination]

four stroke engines have many more components than just pistons. Cams,tappids,rocker,gears etc. Taking it easy helps to mesh them together in uniform. Riding like you stole it scars all those components. But everyones an expert these days. Im sticking to a nice and easy running in. call me old school. I say make friends with a good mechanic they know ;) still gave 5 star

[slodeth5]

That is interesting. Will look up Motoman. Thanks amigo.

[g0fvt]

We never sustained high rpm during break-in because it was said that the excessive friction could anneal the rings. Not sure how much of this was true but certainly engines that were worked hard during break in seemed to have more power and really did not have short lives and high oil consumption.

[g0fvt]

Mototuneusa makes interesting reading, I have run engines in both gently and hard. Many years ago with performance cars we learnt that you should give the engine the odd rip from the lights to get to get the combustion pressure high in order to seat the rings.

[jrkoff]

when breaking in an engine using moly rings you must beat the piss out of it for the first 50 miles otherwise if you pussyfoot the engine you will glaze the rings and they will not seat properly... you wont burn oil you will just have a higher than normal amount of compression blowby associated with the cylinder walls glazed.

[dilmo22]

"its... its... it's a series of tubes" -- that's what you should've said :P

[thefetman]

Hard break in is good for the rings it mows down the rings to fill the gap the best while their still soft and don't have carbon built up, however the slow heat cycles is better for bearings as they don't blackin ir have any ecesive wear due to lack of oiling tjeir are many different ways it mostly depends on the motor how it will be driven and how long you ecpect to drive it.

[jodoe]

i had a 125cc moped and i ran it in hard and it worped something and left a horrible ringing sound....then it got nicked

[jodoe]

most shops will tell you to take it easy for the first 500 miles

[klapdout]

ive built motors for a living at a machine shop 2 years for a respected builder, he has always talked about the importance of running the motor hard for the first 50 miles, and i stand by it 100%

[Pogost1ck]

w00t, are yuo trying to fuck the vehicles of your readers up? Start (with a sportsbike) with like 6000 rpm... then 60 miles later don't pass 7000 rpm, another 60 miles... etc. etc.

[KidxVicious]

Sure, if you want to burn oil and make less power.

[Pogost1ck]

I'd be happy to do a comparison. The most important when breakin in is variety in RPM and throttle position.

Oh well, this seems like a neverending discussion.

@ Joedoe: not sure, but was it a 2stroke? 2stroke engines are sensitive...

[superemu]

I've been told to do all ranges of rpm up to redline and only thing to avoid was gunning it hard and not to sustain a single point of rpm.

[Hekkenschutze]

I dunno Mordeth13, the explaination of hardbreaking the piston rings sounds awesome but all engines need a little time of gentle running before the headgaskets, intake and exhaust gaskets get "set" after a while. Otherwise you stand a chance at blowing one and trust me, I work on engines, my brother and father do too along with many friends at the racetrack and the piston rings are not the only reason for taking it easy on the engine.

[bmd66]

No offense, but this is NOT a good idea for breaking in engines. I work at Yamaha. We DON'T suggest this, not even for our race bikes. Pistons do touch the piston sleves. The rings create the tight seal. Don't go hard on these when breaking them in or they will gouge up your sleves and you will have poorer performance later on since the rings cant seal over those scratches.

[BAMSPLENO]

I agree, The "hard break in" es no bueno

[Hekkenschutze]

yeah, i agree completly, fuck around and you'll eggshell the piston sleaves to where your piston ring can't even create a seal anymore.

[mrman3232]

thats what i would think even though the method mordeth13 is suggesting will break it in faster, as u said the scatches on the engine will be worse giving less preformance and changing the sleeve is not a fun

[efsm]

Well I think your wrong because these bikes are DESIGNED to take this punishment and above(the red line is the point until its safe to push the engine) and he is right about the piston rings because the piston rings expand when they're heated.

[jessejax]

lol when you couldnt think of what the piston rings do i was like ''omg am i gonna have to explain this'' lol, but yeah you got it right it causes compression above the piston(where it matters) and keeps it from below the piston causing more hp, many people replace both the piston and rings when they do there engine, but you could get away with doing just the rings, dunno why people replace the piston really...hmm but yeah, nice video, it all sounds bought right,

[Hekkenschutze]

some people change the pistons for many reasons. One, is that the bored the piston chambers. Two, is that the pistonchamber walls are "eggshelled" out and need to be bored...then new and wider pistons. Also, they may just want different types of pistons, be it forged, hyperetuetic, highcompression, dished, hemi, heat treated or what have you.

[jessejax]

yeah my mate has a rm125(2 stroke if you didnt already know) and factory recommends you change the piston every..40hrs i think it is, i personally think its bs, you shouldnt have to replace a piston every 40hrs, i say replace the piston and rings once you start to notice loss of power etc, not when the factory says so(as there best interest isnt to save you money ;) )

[Hekkenschutze]

umm...40 hours? That is it? That seems insane! I don't know how that product will last in the market when their users have to keep bringing their bikes into the shop every monday after a nice weekend! I'm writing that one down so I won't buy it! But if you actually have to replace it that often, I say replace it and then sell it ;)

[jessejax]

haha dude, its not just the rm(suzuki)... the kx(kawasaki) 07 model ''needs'' its piston replaced every 27hrs(if i remember correctly, ill ask my mate what it is exactly)...lol, i dunno, the pistons aint that cheap(around 150-200 NZ$ i think) it just 125 though, the 250 2 strokes dont need there pistons replaced often

[Pogost1ck]

125 cc 2strokes also need replacements..

I ride a Cagiva Mito, also a 125cc 2stroke. It needs its piston replaced every 8000 miles or so. It's just the wear you'll have to take into account when using a 2stroke.

[nameinuse]

again good vid. for what its worth I was always under the impression that the engine should be broken-in the way it is going to be used, so a sportbike riding in the style you do would be a hard break-in and a cruiser would be according to that, but I could be way off

[swapsplat]

no, it's a barrier

[33LOBO33]

You should be getting paid for this.

[monkeymule]

Er... I mean seal...

[monkeymule]

Buffer! Its a buffer!

[BlogCineDom]

I gave 5 stars. :)

[fairytalemom80]

blah...man talk. leaving this vid for the husband

[hollowright]

Your videos are becoming so popular that people are actually taking pride in getting the first comment.

[xXDehornXx]

he's right, your dogs are cool. they're biker dogs. did they ever jump off your scooter while you were riding?

[SirEuchre]

Seating the rings, yes. Ring(s) at the top seal compression and combustion from the crankcase, and the bottom ring(s) wipe the excess oil off the cylinder walls. Running between compression and vacuum is EXACTLY how you seat rings. That concept is accurate.

[dazvid]

Leaving stars doesn't get your name on the site to make you e-famous!!

YES 5th post!!! (sarcasm)

Btw, interesting vid, I'm hanging out for the next part for the full explanation.

[mguitar]

well, once you complain, more people give stars, that's how it works, heh, anyways.. woot?

[surinate]

Hard Break in's are the only way as far as I'm concerned.  Who wants to drive their new bike slow anyways?

[yellowman88]

Dude i just realized soemthing. Your dogs are Gangsta!! there from the STREETS dawg!!

[onlyplaytabs]

i cant wait to get my first bike =D,im gonna try and use all of the techniques youve taught me [=

[WatchMyVDOs]

First again, 5 Stars My Friend.