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Is My timing Belt off?

Started by Traeden, May 14, 2012, 08:00:17 PM

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Traeden

#15
May 17, 2012, 10:06:17 AM
no offense taken bond... i am a young grass hopper and have learned a lot about my monster with what i have done but never any serious rebuild work. it is the horizontal cylinder thats got 0 compression. so i can buy a new cylinder and just swap them out? does it have to be exact year and make or is there some variety?

Dirty Duc

#16
May 17, 2012, 10:13:18 AM
Not the whole cylinder, just the cylinder head.

900 heads varied.  They are marked on the left side of the bike with something like W or V2.  there is significant difference between them.  If your bike has the W heads, it should be cheaper to acquire a single head because they are less desirable from a performance perspective.

Not rocket science to replace, but it will require a torque wrench.  You should probably do new belts while you are at it.

ducatiz

#17
May 17, 2012, 10:32:40 AM
Quote from: mergatroyd on May 17, 2012, 10:13:18 AM
Not the whole cylinder, just the cylinder head.

900 heads varied.  They are marked on the left side of the bike with something like W or V2.  there is significant difference between them.  If your bike has the W heads, it should be cheaper to acquire a single head because they are less desirable from a performance perspective.

Not rocket science to replace, but it will require a torque wrench.  You should probably do new belts while you are at it.

Exactly.

Pick up a set of Orings.  If you are careful, you can remove the head without disturbing the cylinder.  The Orings are pretty standard oil resistant type so you just need to get some that are the same size (I think it's 2 or 3 on thehorizontal)

Tork wrench and some way to get the nuts on and off -- there are ducati head nut tools on ebay.  It's the angle that is the problem. 

You just have to match the head type as described.  W heads are small valve 900 heads and V2 are large valve. 

If you pick up a complete head, then you're pretty much good to go.  Beyond belts, I would do the valve gapping too.

Triple check the piston surface.  Might have to decoke it some to see for sure. 
Check out my oil filter forensics thread!                     Offended? Click here
"Yelling out of cars, turning your speakers out the window to blast your music onto the street, setting off M-80 firecrackers, firing automatic weapons into the airâ€"these are all well and good. But none of them create a merry atmosphere of insouciance and bonhomie quite like a revving motorcycle.

Slide Panda

#18
May 17, 2012, 11:13:32 AM
As a relevant question - how do you get at the top right nut on the horizontal head? There's that backing for the belt cover that cuts off any useful access.

-Throttle's on the right, so are the brakes.  Good luck.
- '00 M900S with all the farkles
- '08 KTM 690 StupidMoto
- '07 Triumph 675 Track bike.

bond0087

#19
May 17, 2012, 11:41:22 AM
That's a good point that you could just replace the cylinder head probably, but make sure that the piston is intact and be 100% sure that you've figured out how your belt lost so much tension in the first place so that it doesn't happen again. 

And for SadPanda (and others), that's what the cylinder head nut tool is for.  IIRC really the least accessible nut is on the vertical cylinder, but I could be wrong.  Either way, with the tool it's not hard. 
       There is a $12 (shipped) alternative to the Ducati tool that I discovered.  I've been meaning to post this elsewhere, but I haven't gotten around to it. It's available from Summit Racing (and probably elsewhere too).  It's called a distributor clamp wrench 13mm & 15 mm made by Performance Tool, part number W1186.  It's hard to tell in the pictures online, but the top and bottom separate, so you have basically an L shaped tool that has a 12pt 15mm cutout on the bottom, and accepts a 3/8" drive ratchet / breaker bar / torque wrench on top.  Important note: Make sure to attach the torque wrench at 90 degrees to the tool when torquing, or your torque value will be wrong.

I just snapped a picture of it with a breaker bar attached in the orientation that you would attach a torque wrench.



Hope that helps, and good luck, whichever route you end up taking!

Slide Panda

#20
May 17, 2012, 11:55:48 AM
Nice! Thanks for that!
-Throttle's on the right, so are the brakes.  Good luck.
- '00 M900S with all the farkles
- '08 KTM 690 StupidMoto
- '07 Triumph 675 Track bike.

ducatiz

#21
May 17, 2012, 12:07:26 PM Last Edit: May 17, 2012, 12:09:32 PM by ducatiz
Check out my oil filter forensics thread!                     Offended? Click here
"Yelling out of cars, turning your speakers out the window to blast your music onto the street, setting off M-80 firecrackers, firing automatic weapons into the airâ€"these are all well and good. But none of them create a merry atmosphere of insouciance and bonhomie quite like a revving motorcycle.

bond0087

#22
May 18, 2012, 09:53:02 AM
Glad you found it useful, Ducatiz, but 5? They're not Snap-On or anything, but they're not disposable one-time use either!  ;D

Slide Panda

#23
May 18, 2012, 09:56:10 AM
His rule is usually one for every bike... he's got problems.
-Throttle's on the right, so are the brakes.  Good luck.
- '00 M900S with all the farkles
- '08 KTM 690 StupidMoto
- '07 Triumph 675 Track bike.

ducatiz

#24
May 18, 2012, 10:18:40 AM
Quote from: bond0087 on May 18, 2012, 09:53:02 AM
Glad you found it useful, Ducatiz, but 5? They're not Snap-On or anything, but they're not disposable one-time use either!  ;D

i lose shit.  i have at least 3 alternator cover tools floating around my garage for some reason. 
Check out my oil filter forensics thread!                     Offended? Click here
"Yelling out of cars, turning your speakers out the window to blast your music onto the street, setting off M-80 firecrackers, firing automatic weapons into the airâ€"these are all well and good. But none of them create a merry atmosphere of insouciance and bonhomie quite like a revving motorcycle.

Dellikose

#25
May 18, 2012, 11:31:19 AM
Bond...you just made my day with that tool. [beer]

Might want to throw that in the cheaper alternatives to OEM thread!
1999 Ducati M900

ducpainter

#26
May 18, 2012, 12:19:30 PM
Quote from: bond0087 on May 17, 2012, 11:41:22 AM
That's a good point that you could just replace the cylinder head probably, but make sure that the piston is intact and be 100% sure that you've figured out how your belt lost so much tension in the first place so that it doesn't happen again. 

And for SadPanda (and others), that's what the cylinder head nut tool is for.  IIRC really the least accessible nut is on the vertical cylinder, but I could be wrong.  Either way, with the tool it's not hard. 
       There is a $12 (shipped) alternative to the Ducati tool that I discovered.  I've been meaning to post this elsewhere, but I haven't gotten around to it. It's available from Summit Racing (and probably elsewhere too).  It's called a distributor clamp wrench 13mm & 15 mm made by Performance Tool, part number W1186.  It's hard to tell in the pictures online, but the top and bottom separate, so you have basically an L shaped tool that has a 12pt 15mm cutout on the bottom, and accepts a 3/8" drive ratchet / breaker bar / torque wrench on top.  Important note: Make sure to attach the torque wrench at 90 degrees to the tool when torquing, or your torque value will be wrong.

I just snapped a picture of it with a breaker bar attached in the orientation that you would attach a torque wrench.



Hope that helps, and good luck, whichever route you end up taking!
There is a formula to convert the torque too.

M1 = M2 x L1 / L2

http://www.norbar.com/calculators/torque-wrench-extension-calculator.aspx

The site has illustrations to explain.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Slide Panda

#27
May 23, 2012, 03:11:02 PM
My wrench arrived today and worked like a charm in a test go. Not ready to pull my head, but the nuts are loose.

For anyone else I do recommend some penetrating oil sprayed on few time/days before. You really don't want to strip the nut or turn out the stud
-Throttle's on the right, so are the brakes.  Good luck.
- '00 M900S with all the farkles
- '08 KTM 690 StupidMoto
- '07 Triumph 675 Track bike.
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