ADVrider

Go Back   ADVrider > Bikes > GSpot > Parallel Universe
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-28-2010, 11:45 AM   #16
YetiGS
No Talent Ass Clown
 
YetiGS's Avatar
 
Joined: Apr 2007
Location: San Diego
Oddometer: 7,338
This should be stickied. GadgetBoy, you listening?
__________________
-Scott-
Semper Fi
'04 BMW R1150GSA, '04 KTM 625 SXC
"You had better bring an extra magazine. Yeti's amped up on weird shit are hard to bring down." Lonestar2112
YetiGS is offline   Reply With Quote
Old 09-28-2010, 03:11 PM   #17
Simonf8gs
Adventurer
 
Joined: May 2010
Oddometer: 31
Good job Cory!
__________________
___________________________________________
Currently ridding to Tiera del Fuego, Argentina
http://aventuresdesimon.blogspot.com/

---------------------------
08 BMW F800GS
04 Yamaha YZ250 2 strokes
---------------------------
Simonf8gs is offline   Reply With Quote
Old 09-28-2010, 03:21 PM   #18
EnderTheX
Drunken Squirrel
 
EnderTheX's Avatar
 
Joined: Mar 2009
Location: DFW Area, TX
Oddometer: 2,715
Awesome stuff! Doesn't look as bad as I thought it would be.

The puny shims will soon quiver at the might of my DIY mechanic skills!
EnderTheX is offline   Reply With Quote
Old 09-28-2010, 04:35 PM   #19
L.B.S.
Beastly Adventurer
 
Joined: Feb 2010
Oddometer: 1,213
Good show! Many thanks for the time and effort to post up the pics and detailed info!
L.B.S. is offline   Reply With Quote
Old 11-01-2010, 09:24 AM   #20
Mollygrubber
Eschew obfuscation
 
Mollygrubber's Avatar
 
Joined: Feb 2010
Location: Vancouver, BC
Oddometer: 1,314
That was really good, thanks from another Canucklehead.
__________________
"What you damn kids need is a right good war" - my father
Mollygrubber is offline   Reply With Quote
Old 11-02-2010, 02:40 PM   #21
gapek
n00b
 
gapek's Avatar
 
Joined: Nov 2009
Location: Cracow, Poland
Oddometer: 9
Quote:
Originally Posted by GNP77
BMW has a special tool that you thread into this hole and it locks the crank in place to insure it doesn't move from TDC #1 cylinder while you perform your valve adjust. I don't have the BMW tool but made something similar by tapering an M6x 1.25 allen head bolt with the bench grinder.
GNP77 are you sure that this should be an M6 bolt ?! I've just tried to lock the crank, but M6 bolt is too small... I think that this should be an M8!
gapek is offline   Reply With Quote
Old 11-02-2010, 07:39 PM   #22
Camel ADV OP
aka Oso Blanco
 
Camel ADV's Avatar
 
Joined: Mar 2009
Location: Calgary, Alberta, Canada
Oddometer: 1,367
Quote:
Originally Posted by gapek
GNP77 are you sure that this should be an M6 bolt ?! I've just tried to lock the crank, but M6 bolt is too small... I think that this should be an M8!
Umm, not sure. I wrote that at 4am so I very well could have made a mistake on the size. It should be the same size as the handle bar clamp bolt so yeah, likely an M8.

Edit: Yeah just double checked it and it is an M8. Sorry for the misinformation.

Cory
__________________
Camel Tank auxiliary fuel tank for F series BMW twins. www.Camel-ADV.com

Proud member of Team Canada for the 2014 BMW GS Trophy

AT-BZ-CA-CN-CO-CR-CZ-CH-FR-DE-GB-GT-HN-IE-JP-KZ-KR-LI-LU-MX-NL-NI-PL-RU-SV-UA-US

Camel ADV screwed with this post 11-02-2010 at 07:45 PM
Camel ADV is offline   Reply With Quote
Old 11-03-2010, 02:39 AM   #23
gapek
n00b
 
gapek's Avatar
 
Joined: Nov 2009
Location: Cracow, Poland
Oddometer: 9
Quote:
Originally Posted by GNP77
Umm, not sure. I wrote that at 4am so I very well could have made a mistake on the size. It should be the same size as the handle bar clamp bolt so yeah, likely an M8.

Edit: Yeah just double checked it and it is an M8. Sorry for the misinformation.

Cory
Thanks for the info, I'm doing the valve adjustments right now and your posts are like a Bible to me ;)

I noticed one thing, in the BMW DVD service manual is stated that to measure TDC on cylinder #2, you have to rotate 360 degrees… it does not make sense, because after full 360 rotation you’re back in TCD #1 position. I did like you have posted: 180 degree rotation, IN and EX marks and in the same level but pointing in opposite directions – front and rear of the bike.
I’ll post some more info when job will be finished.
gapek is offline   Reply With Quote
Old 11-03-2010, 10:02 AM   #24
itsatdm
Beastly Adventurer
 
itsatdm's Avatar
 
Joined: Jun 2004
Location: Nor Ca.
Oddometer: 4,681
Quote:
Originally Posted by gapek
Thanks for the info, I'm doing the valve adjustments right now and your posts are like a Bible to me ;)

I noticed one thing, in the BMW DVD service manual is stated that to measure TDC on cylinder #2, you have to rotate 360 degrees… it does not make sense, because after full 360 rotation you’re back in TCD #1 position. I did like you have posted: 180 degree rotation, IN and EX marks and in the same level but pointing in opposite directions – front and rear of the bike.
I’ll post some more info when job will be finished.
I am not sure, I understand what you did or you understand what the manual meant to say. The cams move at half the speed/distance of the crank. 1 360 degree rotation of the crank puts the valves TDC on the compression stroke on #2, but the cams have only moved 180 degrees.

In a 360 degree twin like the 800, the pistons rise and fall together, but fire alternately. It is a 4 stroke so it requires 2 revolutions of the crank for the cylinders to complete the cycle, ie 720 degrees. On the timing marks on #1 for both cam and crank, you are on TDC for the compression stroke, cam lobes fore and aft. Turn the crank 360 degrees, ditto for #2. Another complete revolution of the crank, back to #1.

Sounds like you did it right, based on the location of the cams fore and aft, when you took the measurements. The marks on the cam faced away and not inward.
itsatdm is offline   Reply With Quote
Old 11-03-2010, 10:16 AM   #25
Camel ADV OP
aka Oso Blanco
 
Camel ADV's Avatar
 
Joined: Mar 2009
Location: Calgary, Alberta, Canada
Oddometer: 1,367
Quote:
Originally Posted by itsatdm
I am not sure, I understand what you did or you understand what the manual meant to say. The cams move at half the speed/distance of the crank. 1 360 degree rotation of the crank puts the valves TDC on the compression stroke on #2, but the cams have only moved 180 degrees.

In a 360 degree twin like the 800, the pistons rise and fall together, but fire alternately. It is a 4 stroke so it requires 2 revolutions of the crank for the cylinders to complete the cycle, ie 720 degrees. On the timing marks on #1 for both cam and crank, you are on TDC for the compression stroke, cam lobes fore and aft. Turn the crank 360 degrees, ditto for #2. Another complete revolution of the crank, back to #1.

Sounds like you did it right, based on the location of the cams fore and aft, when you took the measurements. The marks on the cam faced away and not inward.

I'll go back and clarify that point. Because you (or I did anyway) rotate the motor with rear wheel, it's tough to watch the timing mark on the crank and turn the tire at the same time so I was watching the cams, which as itsatdm said rotate 1/2 as much as the crank. The BMW manual is correct stating that the crank should rotate 360 degrees for the #2 cylinder check.
__________________
Camel Tank auxiliary fuel tank for F series BMW twins. www.Camel-ADV.com

Proud member of Team Canada for the 2014 BMW GS Trophy

AT-BZ-CA-CN-CO-CR-CZ-CH-FR-DE-GB-GT-HN-IE-JP-KZ-KR-LI-LU-MX-NL-NI-PL-RU-SV-UA-US
Camel ADV is offline   Reply With Quote
Old 11-03-2010, 10:25 AM   #26
Camel ADV OP
aka Oso Blanco
 
Camel ADV's Avatar
 
Joined: Mar 2009
Location: Calgary, Alberta, Canada
Oddometer: 1,367
Quote:
Originally Posted by Anorak
Does BMW want you to use something like this for the cam retainer on the twins?
I assume those big nuts are BMW tools to ensure even pressure is applied before tightening the outer fasteners? If that's the case, there's no mention of it in the shop manual (on my DVD anyway).
__________________
Camel Tank auxiliary fuel tank for F series BMW twins. www.Camel-ADV.com

Proud member of Team Canada for the 2014 BMW GS Trophy

AT-BZ-CA-CN-CO-CR-CZ-CH-FR-DE-GB-GT-HN-IE-JP-KZ-KR-LI-LU-MX-NL-NI-PL-RU-SV-UA-US
Camel ADV is offline   Reply With Quote
Old 11-25-2010, 02:47 PM   #27
KWE
F800GS
 
KWE's Avatar
 
Joined: Nov 2010
Location: GER
Oddometer: 3
Hello my name is Klaus and I'm new here.

This is a very good description but please take care that you are using the correct measuring instrument.

Even if you're using a TESA caliper, the accuracy only is +/-0.02mm
If you are want to measure a dimension of x.05mm you should use a micrometer like that:

http://pdf.directindustry.com/pdf/te...90828-_45.html

Kind regards

Klaus

KWE screwed with this post 11-25-2010 at 02:52 PM
KWE is offline   Reply With Quote
Old 11-25-2010, 02:50 PM   #28
KWE
F800GS
 
KWE's Avatar
 
Joined: Nov 2010
Location: GER
Oddometer: 3
Sorry I'm from Germany but a caliper is not accurate enough for this measurement.

KWE screwed with this post 11-25-2010 at 02:59 PM
KWE is offline   Reply With Quote
Old 11-25-2010, 10:12 PM   #29
Camel ADV OP
aka Oso Blanco
 
Camel ADV's Avatar
 
Joined: Mar 2009
Location: Calgary, Alberta, Canada
Oddometer: 1,367
Quote:
Originally Posted by KWE
Sorry I'm from Germany but a caliper is not accurate enough for this measurement.
I didn't actually use them for measuring the shim thickness. I had them out to show how small the shims are.

The sizes are stamped on the side of the shim so no measuring is required.
__________________
Camel Tank auxiliary fuel tank for F series BMW twins. www.Camel-ADV.com

Proud member of Team Canada for the 2014 BMW GS Trophy

AT-BZ-CA-CN-CO-CR-CZ-CH-FR-DE-GB-GT-HN-IE-JP-KZ-KR-LI-LU-MX-NL-NI-PL-RU-SV-UA-US
Camel ADV is offline   Reply With Quote
Old 11-25-2010, 10:23 PM   #30
Lost Rider
Roadie
 
Lost Rider's Avatar
 
Joined: Oct 2006
Location: Ventura County, California Republic
Oddometer: 3,146
Quote:
Originally Posted by GNP77

The sizes are stamped on the side of the shim so no measuring is required.


Oh German perfectionist n00B... Welcome to ADV, but might I say you should sit back and learn a few things from people that have their shit together before you speak.
__________________
Photography for me is not about recreating what I saw through
the viewfinder but to show people the way I want to see the world.

LostRider.com

Lost Rider screwed with this post 11-25-2010 at 10:29 PM
Lost Rider is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 04:22 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014