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Old 05-11-2013, 12:18 PM   #76531
bluegroove
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Quote:
Originally Posted by ER70S-2 View Post
So how inna world did ya loose the rider pegs??
I came up short on a triple and cased it so hard the pegs bent and the brackets snapped off!
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Old 05-11-2013, 12:38 PM   #76532
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Triples on a DR650?!
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"BTW, I don't do style. It's a dirt bike, not some girlie dress-up thing." -
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Old 05-11-2013, 03:36 PM   #76533
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Sure no problem. I just hit the rocket boosters and flip the switch that turns me into Ricky Carmichael.
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Old 05-11-2013, 05:35 PM   #76534
ER70S-2
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Talking

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Quote:
Originally Posted by Threewheelbonnie View Post
"BTW, I don't do style. It's a dirt bike, not some girlie dress-up thing." -
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Old 05-11-2013, 06:11 PM   #76535
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Question Tech question: Head bolt washers

I'm replacing the head gasket and I'm unsure whether the very thick "copper" (or similar) washers under the head bolts can be reused or not. I could simply put steel washers, but I'm not sure whether there's a special reason for the original washers to be copper. What do you guys normally do?

Also are the bolts themselves reusable?
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Old 05-11-2013, 07:08 PM   #76536
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So, my bike is now going really low RPM and stalling out at nearly every stop sign. It was doing this infrequently and now seems to be doing it every stop. It has no problem idling while stationary; it hums along nicely at 1500 +/- (measured by Vapor computer). Choke not needed to start the bike (first poke of the button every time). It doesn't die randomly, surge or otherwise bog or act weird while actually riding. It's not down on power. It's just when the clutch gets pulled in for the final deceleration to a stop (I don't like downshifting to first).

Stock carb, fuel screw out 1.5 turns, snorkel removed. No additional airbox holes, TwinAir air filter.Remote cable choke. Quick twist R1 throttle tube.
Bike was used off and on during the winter, and has fresh 92 octane and a bit of Sea Foam in there.
Under 500mi on new correct spark plugs.

An 09 with 6600 mi. I bought it with 6100 miles. Zero mods were done by previous owner.

HALP!
Well, after taking a look more closely at my Vapor, the bike was actually idling more around 1250 today. Upping the idle screw to 1500 or so, and backing the fuel screw back to barely above 1 turn out seems to have lessened the stalling-while-stopping issue.

Checking fuel height with a rubber tube was inconclusive. It could have been 1.5mm or more like 3-4mm. It was just too fiddly and fuzzy of a test for me to be confident in what I was seeing.
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Old 05-11-2013, 09:01 PM   #76537
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Quote:
Originally Posted by gzr View Post
I'm replacing the head gasket and I'm unsure whether the very thick "copper" (or similar) washers under the head bolts can be reused or not. I could simply put steel washers, but I'm not sure whether there's a special reason for the original washers to be copper. What do you guys normally do?

Also are the bolts themselves reusable?
Based on when I did my Husky TE610, Id say no. The copper needs to be crushed and the head bolts need to be stretched when torqued. They are shot after that. Not sure about the DR though, but my guess it's no different.

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Old 05-12-2013, 09:16 AM   #76538
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Quote:
Originally Posted by gzr View Post
I'm replacing the head gasket and I'm unsure whether the very thick "copper" (or similar) washers under the head bolts can be reused or not. I could simply put steel washers, but I'm not sure whether there's a special reason for the original washers to be copper. What do you guys normally do?

Also are the bolts themselves reusable?
Anneal the washers by heating with a propane torch to glowing red and allowing to cool down slowly. Reuse the bolts.
It's a motorcycle not the space shuttle.
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Old 05-12-2013, 09:21 AM   #76539
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What ft./lb do the DR650 head bolts get torqued to?

I know my Ford F-150's head bolts are torque-to-yeild, and are supposedly non-reusable, but some guys say you can use them a second time - but no more than twice.
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Old 05-12-2013, 09:45 AM   #76540
EBMOTT
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Question rear shock

Is anybody out. There running on a ricor shock. If so what do you think of it?
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Old 05-12-2013, 10:26 AM   #76541
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Maynard -

> Anneal the washers by heating with a propane torch to glowing red and
> allowing to cool down slowly. Reuse the bolts.

Copper is annealed by plunging into cold water after heating.

Rick
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Old 05-12-2013, 11:41 AM   #76542
Carl Childers
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Quote:
Originally Posted by bumpathump View Post
Maynard -

> Anneal the washers by heating with a propane torch to glowing red and
> allowing to cool down slowly. Reuse the bolts.

Copper is annealed by plunging into cold water after heating.

Rick
Might be terminology in this case? For re use of copper washers and even the old Triumph 650 head gaskets we used to heat them up in an oven and then take them out to cool on their own. Never had a leak doing it that way.
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Old 05-12-2013, 12:36 PM   #76543
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Quote:
Originally Posted by bumpathump View Post
Maynard -

> Anneal the washers by heating with a propane torch to glowing red and
> allowing to cool down slowly. Reuse the bolts.

Copper is annealed by plunging into cold water after heating.

Rick
Rick,
I think Maynard is correct. IIRC, Annealing requires slow cooling. Plunging into water HARDENS the metal. (I'm going back to memories from High School metal shop here ... so I defer to any experts here )

I've used this technique on Copper Drain Plug washers for about 30 years ... never a leak and never stripped one either.
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Old 05-12-2013, 01:10 PM   #76544
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Tech question: Head bolt washers

Thanks for reassuring me that I can reuse these.

As far as I know copper doesn't really care about the cooling rate when you anneal it. Ferrous metals (and some aluminium alloys that can be solution treated) are another story and that's probably what some people were thinking of....

@ MamboDave, the bolts take 27.5ft-lb and the nuts take 18 ft-lb. That's little enough that I doubt they will yield (even though they are machined "narrow" along their length and the thread has a fine pitch)

The service manual does not mention anything about replacing unless I'm missing it completely.
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Old 05-12-2013, 01:40 PM   #76545
ER70S-2
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Quote:
Originally Posted by Mambo Dave View Post
What ft./lb do the DR650 head bolts get torqued to?

I know my Ford F-150's head bolts are torque-to-yeild, and are supposedly non-reusable, but some guys say you can use them a second time - but no more than twice.
Be aware that the manual is wrong with the locations of the different length head bolts. Set the head in place and drop the bolts in, making sure all of them are standing the same distance up.

If you're just retorquing this won't matter.

Example of the wrong fastener location:
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Quote:
Originally Posted by Threewheelbonnie View Post
"BTW, I don't do style. It's a dirt bike, not some girlie dress-up thing." -
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