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Old 02-06-2013, 11:20 AM   #73501
poppawheelie
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Quote:
Originally Posted by Adv Grifter View Post
Plus ONE ... another old school guy! YEA!

I learned everything (I think I know ) about heat cycles regarding break in from reading Kevin Cameron for the last 30 years ... and from breaking in my newly rebuilt 2 stroke race bikes for 10 years. I never had an engine failure on any race bike in this time ... including running through Baja flat out in 90F heat for hours and hours.

The theory is you don't want to get a BRAND NEW engine TOO HOT on its first run. Things are tight. First start up it heats up quickly ... metal expands ... and it expands at different rates (steel vs. Alu vs. brass) As it expands contact pressure with mating surfaces increases. Expansion and contraction of metal helps the mating surfaces wear in to each other. If too hot too soon you can get uneven expansion and develop Hot Spots. Not good. You don't want hot spots.

If the engine gets TOO HOT when its brand new ... tolerances can become too tight with too much pressure and heat ... this can do damage to cylinder, rings, piston, leading to shortened life of the motor. Once several heat cycles are completed the mating surfaces are polished up pretty good and can tolerate more heat as their is less rubbing friction. As the motor loosens up it can tolerate more pressure from heat expansion.

Also there is less pressure as rough spots and uneven areas are polished down from contact, smoothed out and flushed with cooling oil.

I mostly only ever did 2 strokes. A brand new two stroke motor can be broken in ... in just 30 minutes. Ready to race. Not so a four stroke ... as rings need to bed in and seat. Overheating a brand new ... and very tight new piston ring is not a good idea. (according to Kevin Cameron of course)

As I said earlier ... everyone is their own expert on break in. I trust Kevin Cameron's ideas. It's true, two strokes are different than 4 strokes. But the basics tend to cross over, IMHO.
You worked with Kevin Cameron!? WOW!
A DR650 isn't 2 stroke, but it's old enough technology that an old fashioned break-in is a good idea. Can't hurt.
Yeah, I used to race Suzuki 2 strokes. Love 'em.
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Old 02-06-2013, 11:44 AM   #73502
Adv Grifter
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Quote:
Originally Posted by poppawheelie View Post
You worked with Kevin Cameron!? WOW!
A DR650 isn't 2 stroke, but it's old enough technology that an old fashioned break-in is a good idea. Can't hurt.
Yeah, I used to race Suzuki 2 strokes. Love 'em.
nope, never worked with Cameron, never even met him ... just read his work in Cycle World.

I hear he hasn't ridden a bike in over 20 years. Still a good guy, good historian and was a good race pipe builder back in the day.
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Old 02-06-2013, 12:26 PM   #73503
poppawheelie
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Quote:
Originally Posted by Adv Grifter View Post
nope, never worked with Cameron, never even met him ... just read his work in Cycle World.

I hear he hasn't ridden a bike in over 20 years. Still a good guy, good historian and was a good race pipe builder back in the day.
Oh, OK. Yeah, we can learn a lot reading his stuff... and Peter Egan, and Clement Salvadori. When Salvadori said the Continental Divide Trail was the most beautiful ride he ever did, that was enough for me. I did it. I'll be heading back out that way with my DR650 this Summer. Just returned from riding Ecuador on a DR650.
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Old 02-06-2013, 12:42 PM   #73504
Adv Grifter
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Originally Posted by poppawheelie View Post
Oh, OK. Yeah, we can learn a lot reading his stuff... and Peter Egan, and Clement Salvadori. When Salvadori said the Continental Divide Trail was the most beautiful ride he ever did, that was enough for me. I did it. I'll be heading back out that way with my DR650 this Summer. Just returned from riding Ecuador on a DR650.
Cool. Did you ride down or rent a DR locally? I hear DR's are for sale there.
I've made several trips to Ecuador over the years. I was there screwing around in the 70's, returned a few times after for work. I was only there two and a half months but did manage to get to know Quito a bit, spent time in Banos, Esmeraldas, Riobamba, Cuenca and of course the markets in Otovalo.
I learned to eat Qui .. and like it. I was there when an attempted Coup (1975) happened. It was foiled but interesting to wake up to 50cal machine gun fire at 6 am. I was two blocks away.
Some great roads ... never did have a bike there.
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Old 02-06-2013, 01:36 PM   #73505
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Quote:
Originally Posted by planemanx15 View Post
Is the motoman method really the preferred? I have a friend who is a mechanic that said a lot of problems can steam from running a brand new engine hard in the beginning of its life. Then again, he might just be saying it for the business. Does anybody have an engine with a ton of miles\Kms on it that has used the Motoman method? My main concern is oil leaking past the rings.
Used that method when I did the 790 kit on my bike. 11,000 miles ago. At that time I also replaced all of the internal bearings with SKF bearings, new valves, guides and seals and a few other things. The bike runs 100% better now than it did when it was new. Gobs of smooth power and great mileage on the rare occasions that I ride conservatively.

Total mileage is 36k or so. I'd have to look.
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Old 02-06-2013, 02:47 PM   #73506
poppawheelie
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Quote:
Originally Posted by Adv Grifter View Post
Cool. Did you ride down or rent a DR locally? I hear DR's are for sale there.
I've made several trips to Ecuador over the years. I was there screwing around in the 70's, returned a few times after for work. I was only there two and a half months but did manage to get to know Quito a bit, spent time in Banos, Esmeraldas, Riobamba, Cuenca and of course the markets in Otovalo.
I learned to eat Qui .. and like it. I was there when an attempted Coup (1975) happened. It was foiled but interesting to wake up to 50cal machine gun fire at 6 am. I was two blocks away.
Some great roads ... never did have a bike there.
I went with this outfit on this ride. http://www.freedombikerental.com/ind...194&Itemid=250
Highly recommend it, whether you rent a bike from them and go on your own, or ride with them. They are in Quito and offer many bikes, but the DR is their mainstay. First group I've ridden with where everything is paid for, even the gas! You don't need to get your wallet out except on "rest" days. The country is quite peaceful now. May take my wife there to ride.
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Old 02-06-2013, 03:04 PM   #73507
Mongle
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Originally Posted by blackcap View Post
another piece of the puzzle. a bit shorter this time due to the internet in indonesia being a little slow. this took 10hrs to upload.
That was cool.

How about that hole in the asphault! If you hit that they could just throw your dead body in the hole!
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Old 02-06-2013, 03:29 PM   #73508
planemanx15
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Quote:
Originally Posted by MADurstewitz View Post
Used that method when I did the 790 kit on my bike. 11,000 miles ago. At that time I also replaced all of the internal bearings with SKF bearings, new valves, guides and seals and a few other things. The bike runs 100% better now than it did when it was new. Gobs of smooth power and great mileage on the rare occasions that I ride conservatively.

Total mileage is 36k or so. I'd have to look.

MADurstewitz, I see that your from Jersey... is this you?

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Old 02-06-2013, 05:37 PM   #73509
rpet
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40KM and zero mods?? that may be a record!

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Originally Posted by Spirtwolf15x View Post
Well first 40km down, no problems so far I think. No oil pissing, no "omgwtf?!" noises. Only 9960 more to go! XD

Here's a pic for all of ya.

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Old 02-06-2013, 07:58 PM   #73510
Kommando
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Originally Posted by Rob.G View Post
I just spent a half hour replacing the stupid factory "toolbox" tube with one of those nicer, longer, more-secure "skinny tool tubes." Went on pretty easily. I found two lengths of metal in my junk drawers that were meant to be used with u-bolts. Stuck 'em in the vice and bent one 90-deg for the rear, and bent the other one at 45-deg for the front, to line up with the hole in the frame where the rear blinker used to go (since mine were relocated to the OEM rack to work with the Givi luggage racks), then secured everything with nylocks and bolts.

Anyway, now to decide what to put in it. On my KLX250S, I use two of the regular-sized tool tubes and one of them holds a zipper pouch with tools in it. No such luck fitting even the empty zipper pouch in this one. Hmmm.

Rob
Tent-pole bag. I found one through Aerostich. It's thin nylon, so it slides in and out of my PVC tooltube easily.
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Old 02-06-2013, 08:25 PM   #73511
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Quote:
Originally Posted by MADurstewitz View Post
Used that method when I did the 790 kit on my bike. 11,000 miles ago. At that time I also replaced all of the internal bearings with SKF bearings, new valves, guides and seals and a few other things. The bike runs 100% better now than it did when it was new. Gobs of smooth power and great mileage on the rare occasions that I ride conservatively.

Total mileage is 36k or so. I'd have to look.
How have you been liking the 790? Any issues? Did you do a new cam with it? Also, why did you change out the bearings and other things? Thanks!
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Old 02-06-2013, 08:34 PM   #73512
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just the basics. gold valves front and rear with heavier springs for the extra fuel up front and luggage in the rear. i had the pros sort out the rear suspension for me but the front i did myself through trial and error with a little guidance from procycle.

i cant remember what bars they are and im too lazy to walk downstairs to look haha maybe they are pro taper but i dont know what bend. most of the rise is thanks to the MSC underbar steering damper. its a nice little system that gives the rise i needed and the damper is a beautiful thing to have when riding rough trails.


Quote:
Originally Posted by Mambo Dave View Post

Good stuff. Did you alter your bike much, suspension wise, to handle the constant punishment?

What bars are those? they seem to have a higher rise than stock.
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Old 02-06-2013, 08:53 PM   #73513
Spirtwolf15x
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Location: Vancouver, Canada
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Quote:
Originally Posted by rpet View Post
40KM and zero mods?? that may be a record!
OH I have mods, they just aren't on the bike yet, waiting till she's properly broken in before i start fiddlin' with her.
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Old 02-06-2013, 09:23 PM   #73514
bluegroove
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Wanna trade fork springs with me? .50 or stock for yours

I just bought a sweet '06 DR650. It has .50 fork springs and they are pretty stiff for my taste. I'd like to trade you for something like .46, .47, .48. What ya got?

I also have the stock springs I can trade if you want those. Please PM me! thanks!
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Old 02-06-2013, 10:08 PM   #73515
LexTalionis
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Originally Posted by Obard View Post
Thanks, that is some peace of mind. I just did a valve adjustment on it, but am uncertain about my competency in this department. Lack of quality tools, and experience being the biggest factor. How do I know if I did it right or wrong? It rattles and clanks quite a bit up there. Btw, it did the blue smoke thing before I adjusted the valves, so I don't think I made it worse.
And some riders here wonder why others of us prefer to purchase a new motorcycle, one that hasn't experienced the attention of well-intentioned, but uneducated previous owners! Well, here's why!

Lex

P.S. Have just read further in this thread and read about Obard's missing parts. Condolences to you, Obard. Life is a learning experience, this one will be a bit costly for you. I lacked the courage to just jump into tuning my first motorcycle, instead I looked around for someone to teach me how, being wary of just your outcome. That was 40+ years ago, I've saved thousands of dollars doing all the maintenance on all my bikes since. You'll recoup your educational expenses going forward. Lex
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