JUST AS i THOUGHT...

[Shane]

I've always believed that you should break in a motor just as you would drive it. ---- hard!
Screw the factory reccomendations!

Well, I found a rad site that proves it!
I tried to post it but it did some weird stuff because it is connected to a wedding site.
Anyways-- "Jeff the Sound guy" had a cool dirt bike site. He got into all kinds of tech issues. But what caught my eye was new engine break in.

try: jeffthesoundguy.8m.com/

1.go to "about jeff" from the wedding site

2. scroll to the bottom and click his "dirt bike web page" It will be tucked under his wedding site again, but it is full of some new school info that blows old man beliefs out of the water!

[scooterconvert]

I've been riding my Bajaj the same since day one. It's true that high revs are not good for break in but babying an engine during the break in period will only hurt it.

[King Vino]

I beg to disagree. One my first week this past year at the YMC dealer, we had a Vino come in with what could best be described as a severely damaged engine with 334 miles on it. First thing Matt asked, was if the owner was riding it at full throttle. Kids reply was yes, and as such YMC refused to replace the engine under warranty. 334 miles on it, needed a new engine and wasn't covered under warranty.

While I don't say you need to baby the engine, YMC is pretty conservative with their recommendations, but there are degrees of how hard you can push an engine barely primed.

[scooterconvert]

I wonder if 2 stroke or 4 stroke makes a difference. What would YMC have done if that kid wasn't honest and said he was just riding it easy?

[Zuma88]

yea?


L
O
L


some times the small questions and answers are good

[Elliott]

Yeah!! your Right King Vino , when you Trottle You Don't Turn it all the way to it's Full Trottle you have to WORK your Way AS you Accelerate you turn when your engine is at Climax, and you stay with the FLOW and the Trottle has to be the Same Flow as your engine,

and your right? scooterconvert

I kept my Scoot under 50 MPH untill Break in - And still ran BAD!! :eek:

[Shane]

Did you guys check out the site?

It's not "start it up and gun the hell out of it"

You gun it in the 3 stages.
Read Jeff the sound guy's info that he is linked to.
The author is a track tuner for honda.
You can see the pictures of the pistons vs. stock break-in procedure.
big difference. I'm a believer.

& yes, I think the same would apply for 2 or 4 strokes.
It's all about the rings!

By the way, how did I get this parking lot full of scooters next to my name on my threads?

[XPS1210]

The scooters by your name were probably randomly generated by King vino... he does that sometimes if I have remember correctly...

You can change it in your User CP and click on edit avitar...

[Scooter Gyrl]

I've been reading through old posts looking for answers to my questions and just generally gathering information since I am a newbie. Great stuff!!!

I read the post from Shane 10-29-04 regarding breaking in new scooters. He referred readers to a site by MotoMan http://www.mototuneusa.com/break_in_secrets.htm advocating WOT during break in period, actually within the first 20 miles. It was stressed in the article to do this AFTER COMPLETELY WARMING UP the engine. Well, I'm way past 20 miles...I'm even past 200 miles, but I have been following the Yamaha Vino Classic manual for an easy break in. The manual was rather vague...no "prolonged" WOT. I mean...what is prolonged. So I asked my dealer and he suggested WOT for no longer than 1 mile, which I have been doing. Has anyone else read this article? The data seems pretty convincing but I'm no techno geek so I really have little understanding of combustion engines. :confused: Should I continue following the manual? It might be too late for me but others could possibly benefit from revisiting this subject.

[XPS1210]

pretty much as long as your engine is running... yamaha isn't gonna care how you broke it in...

and if it dies... tell them you rode gentle for the first (up to ) 500 miles... and then started riding with long WOT runs...

Bottom line, 95% of scooter owners that actually put miles on the scooter... ride WOT from day one... it just happens... with a motorcycle topping at 40 mph... you HAVE to ride WOT...

IMO, if it breaks... then BS your way into a warrenty repair... If it's after the warrenty... then something went wrong that is major, so upgrade as upgrades are cheaper then stock parts...

[Super Matty P]

I would think a 4stroke engine would not be as sensative to break-in periods as a 2 stroke. the 4stroke engine uses a seperate lubrication system. I think the majority of all breakin problems are on 2stroke.

[Lennox]

I would think a 4stroke engine would not be as sensative to break-in periods as a 2 stroke. the 4stroke engine uses a seperate lubrication system. I think the majority of all breakin problems are on 2stroke.
you have it TOTALY backwards......... The only thing to break in on a two stroke is the rings, which are set in 10 minutes. On a 4, break-in is far more crutial.....

[Super Matty P]

that defies logic to me. As a mechanic and custom fabricator I know a little bit about car engines (4stroke). Nothing in the valve train needs to break-in. With its seperate lubrication system the rings and rotating assembly is constantly wet unlike a 2stroke that only gets lube with fuel.

I just don't see how this is different. When you purchase a new car they tell you to break it in slowly but the truth is that if you let the car idle for 10 minutes it's as broken in as it's getting for at least the first 50K miles. Now auto engines are built to higher tolerances than scooter engines that cost nothing. I don't wanna seem like I know everything. I'm still learning so if you can provide some sort of factual back-up to that claim

[XPS1210]

super matty... here is the concept...

most scooters (including stock!) rev to about 4000-7500 rpm's to start moving... ( stock the lower, modded the higher)...

Now, tell me how to take it easy on an engine when it is required to even start the scooter in motion... how do you break it in... other then to ride the thing...

My stock zuma revs out to about 7500 or so... starting out it's about 4000 rpm's... I'll watch the tach next time I ride and get an exact number on what it's at when it starts moving... If the 4000 is a little high... I know it's at least over 3000... since the things idle at about 1200-1500 rpm's...

[speedy_scooter]

Its simple to take it easy on a motor Jered. Simply dont rev the living crap outta it when you take off. I know that the motor revs up when you take off but you dont have to run it all the way to those 7.5k speeds. Just go easy on the throttle. I know that there are a bunch of people on here that disagree with me but there must be some reason that 90% of people break there motors in. If manufacturers thought it was better to run it WFO then they would say that because then you would think, hmm, the manufacturer says this will increase performnace so I should do it. I just think its b/s to not break a motor in.

[Lennox]

Nothing in the valve train needs to break-in. With its seperate lubrication system the rings and rotating assembly is constantly wet unlike a 2stroke that only gets lube with fuel.




seperate lube has nothing to do with it. Do you really believe that the valve train needs no break-in? What about the cam/lifters/timing chain/belt?

There is only 2 moving parts on a 2-smoke..... piston, and crank..... do the math.

[XPS1210]

I checked my tiny tach... and it started to enguage the clutch (stock) at 3800 rpm's...

heck, On my VW van... the engine is limeted to 4500 rpm's from the factory if I remember correctly...

and mine idles cold at 1650 rpm's and warm at 1350 or so...

My top rpm is 7300 or so...

where is there any room to take it easy with the top RPM's being at 40 mph...?

at 3800 RPM's it just barely moved the scooter... litterally I could get 5 mph without adding more throttle...

[speedy_scooter]

Remember though that your VW is a 4stroke and they always have low rpms, execpt on streetbikes.

[Sonny]

My break in procedure;
Add a bit of premix for the first tank.
Let the motor warm up for a few minutes.
Ride around the parking lot "blipping" the throttle, but not all the way to WOT, for about 15-20 minutes.
Try to stay off WOT for more than a half mile or so for the first 50-100 miles.
After that I ride it normally, haven't had any issues yet.

My 4 stroke break in is quite different. I basically just ride easy for about 100 miles, no "blipping" and VERY limited WOT. I could try to explain why, but by the time I got all the words out the way I wanted, I'd be asleep at the keyboard...