OZ ATV :: The Australian ATV Forum

[BRIAN]

HI,HOPE EVERYONE IS GETTING OUT THERE AND GETTING SOME GREAT RIDES. IVE GOT THE RIDE NOW AND ITS NEW....CAN I SHORTEN MY RUNNING IN TIME ON MY MOTOR,BY LEAVING IT RUNNING IN MY SHED FOR SOME TIME ????? OR IS THIS NOT A GOOD IDEA. I JUST WANTA SEE WHATS SHE MADE OF,AND GIVE IT A GOOD HARD RIDE. THANKS.
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08 YAMAHA RAPTOR 700......MY FIRST ATV .

[TasRaptor700]

Best way to run it in is whilst you are on it, I couldn't let mine sit in the shed idling, I would have to be out on it....
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Andrew

[WHATEVER]

It is never a good idea to leave the bike running and not to rev it ... it can "glaze" the sleeve. Even when "warming" the quad ... better to ride slowly until you think she is warm enough.

As for running the quad in ... all motors (top manufacturers) pre run-in motors at the factory, so as to fault find before sending the quads out.

In my opinion, take her out for a ride ... where possible, give her a good blast ... for short periods (3 - 5 minutes) ... Repeat about every 15 to 20 minutes

If you leave the bike running in the shed, it can also make the engine "tight" ... and that is one thing you do not want tight ...
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Mikey got 3rd in the Nationals!!

It would not have been possible without the help of ...
Hustler ATV Racing
Thanks Dominic!!

[doorslammer]

WHATEVER wrote:

It is never a good idea to leave the bike running and not to rev it ... it can "glaze" the sleeve. Even when "warming" the quad ... better to ride slowly until you think she is warm enough. As for running the quad in ... all motors (top manufacturers) pre run-in motors at the factory, so as to fault find before sending the quads out. In my opinion, take her out for a ride ... where possible, give her a good blast ... for short periods (3 - 5 minutes) ... Repeat about every 15 to 20 minutes If you leave the bike running in the shed, it can also make the engine "tight" ... and that is one thing you do not want tight ...

yep. but when giving her a good blast dont hold it wide like 3/4 hrottle with blips of W.O.T often
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01 Banshee
Never take life seriously. Nobody gets out alive anyway

[fossil800R]

WHATEVER wrote:

If you leave the bike running in the shed, it can also make the engine "tight" ... and that is one thing you do not want tight ...

Wish I'd left the missus running in the shed
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I'm not suffering from insanity, I'm enjoying it!!!

[WHATEVER]

doorslammer wrote:

yep. but when giving her a good blast dont hold it wide like 3/4 hrottle with blips of W.O.T often

Good point ... ! Forgot that ... hehehehe
_________________
Mikey got 3rd in the Nationals!!

It would not have been possible without the help of ...
Hustler ATV Racing
Thanks Dominic!!

[mildgen]

hey mate,

im no expert, but i wouldnt leave it running in the shed for to long. i would prefer a bit of air getting pushed through the radiator.

[bullet]

I love the topic of running in.
everyone has a different opinion and everyone wants to get it right out of fear of the consequences of getting it wrong. This fear can lead to people believing all sorts of crazy proceedures.

On top of that some manufacturers have some rediculously religious running in proceedures just to cover their @rse. I'm sure they do it so they can void your waranty if you don't follow it "exactly".

I'd say the mention of manufacturers pre-running in is a good interpretation of the modern process.

In the old days when vintage engine big end bearings were sized with hand tools, running in was absolutely critical. Every interfacing part of the engine had human made high spots and rough edges. Imperfections could be measured in lots of thousanths of an inch (maybe 0.005). These days, modern machining processes and tolerances are much more consistent. Surface imperfections are negligable and manufacturing tollerences of under a thou are normal. Some old vintage engines would do less than 10,000 miles before requiring a complete rebuild. It seems the genreal importance of running in these old engines has stuck with us because of that "fear factor".

Everyone stresses over running in a new engine (and so they should to some point). But these days it is more a matter of just don't do anything stupid.

Don't leave it idling in the shed, excessive idling is not even good for an old engine.
Don't do your first ride on the hottest day of the year.
Do not stay at any sustained loads, and vary your throttle position frequently (normal riding really).
Don't take it straight to the start gates of a motor cross race.

For the first start I would get it off the choke asap (over rick mixtures wash oil of the bore), usually by holding the revs a comfy 500 rpm above the normal idle and fluctuate the revs a bit. Run the engine like this for maybe 30 seconds and turn it off for a minute to let it 'heat soak' (just helps all the different metals expand evenly).
The engine block should now feel warm. repeat the above for maybe 1 minute at slightly higher revs. Turn it off for a culpe of minutes while you chuck your ride gear on. Back to the bike, the block should now have heat soaked to feel nearly too hot to leave your hand on... Jump on it and go for a normal ride.

After your first hours riding, the piston might have gone up and down 200,000 or more than quarter of a million times. She should be right for the race track now (you think it would be more likely to be worn out than run in when you look at the numbers).

I'm sure you'll hear a dozen different opinions... for what it's worth, that's mine
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Can-Am X Team
Bullet #Y12. MrsB #Y18.

[Wadey]

more than 30 years as a qualified bike mechanic [ called technician nowadays! ] , my experience tells me there is still a place for some sort of run in period. The old theory that running in takes all the high spots of most of the moving parts can easily be verified if you pull a motor apart thats done say 30 minutes work. You will see there is only small wear marks on some areas of moving parts, its generally not uniform. Run em in gentle--longer lasting engine and less chance of high wear initially, Run em hard -- get racing clearance quicker but you may not wanna be the owner of that engine next season! And dont forget the heat associated problems of a hard run in/ no run in. Yes old engines needed a good long run in period, maybe we dont need to be as diligent as back then, but dont forget our engines are doing maybe 2 or 3 times the RPM and producing heaps more power per cc. re early comment---DEFINITELY dont try to run in by extra idling time in the garage!!!