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Modest beginnings of my M750 project

Started by memper, March 07, 2013, 07:40:15 AM

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memper

Fuel tank situation established. No pump issues yet.
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

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Important: always check your battery filter and regularly change your headlight fluid.

memper

So while measuring shims and trying to get the closer shims out (heh heh) I was looking at my belt pulleys. I run the belts with no covers and don't ever plan on putting them back on. Therefore the plastic backsides are not really necessary right? Can I remove them? I know I need a special tool or a modified socket in order to do this. I wonder if I can cut them off if I'm careful...
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

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Important: always check your battery filter and regularly change your headlight fluid.

brad black

there's two screws holding them in that can only be accessed by removing the pullies.  you could cut off what you can get to, but there is some steel in the backing at least.
Brad The Bike Boy

http://www.bikeboy.org

memper

Well, it was just a thought. Maybe I will try making a tool out of some steel tube or an old socket or something when more important jobs aren't on the docket.
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

memper

Valves:

Just took out all the shims one at a time. The intimidation of valves is a ruse. Hardest part was dealing with the battery box. Below are my findings. Im not too sure what to do now. I believe I need to order larger closing shims but not certain on what size(s). Monday I will check out the clearances with a feeler gauge. Totally forgot to do that  :-\

Vertial Head
-Int:   Openers: 8.20mm
         Closers: 8.08mm

-Exh:  Openers: 8.52mm
         Closers: 7.98mm

Horizontal Head
-Int:   Openers: 8.24mm
         Closers: 8.25mm

-Exh: Openers: 8.55mm
        Closers: 8.05mm
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

ducpainter

Usually people measure clearances first and then the shims.
"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
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    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
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memper

Yeah...I wanted to get in there and got too intent on the shim removal process that I totally spaced  ???
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

MendoDave

Quote from: memper on April 04, 2013, 05:06:09 PM
Valves:

Just took out all the shims one at a time. The intimidation of valves is a ruse. Hardest part was dealing with the battery box. Below are my findings. Im not too sure what to do now. I believe I need to order larger closing shims but not certain on what size(s). Monday I will check out the clearances with a feeler gauge. Totally forgot to do that  :-\

Vertial Head
-Int:   Openers: 8.20mm
         Closers: 8.08mm

-Exh:  Openers: 8.52mm
         Closers: 7.98mm

Horizontal Head
-Int:   Openers: 8.24mm
         Closers: 8.25mm

-Exh: Openers: 8.55mm
        Closers: 8.05mm

Checking the clearances is sort of the whole point. You may not need to do anything to the closers. Id put em all back and then see what you have.

Check this out.

http://ducatitech.com/2v/maint/adjust/index.html

And this..


http://youtu.be/dIj3nSJGPZw

memper

Yes, yes, I know...I have read that article and seen the video many times. Thank you though. It happens sometimes when Im working on my bike. I get so excited and do 5 things all at once and sometimes forget stuff (ha). Like today, I redid all my fluids and rerouted some wiring while also playing with the valves. No biggie. Will get to them monday.
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

MendoDave

Have you looked at this article on cam degreeing?

http://ducatitech.com/2v/maint/rebuild/headwork.html

I have to admit on this topic im a bit out of my depth. The thing that interests me is that they do this on 750's and it was my understanding that there is not much you can do with a 750 other than the lighened flywheel, clutch, and FCR's

memper

Quote from: Mendo Dave on April 04, 2013, 06:06:03 PM
Have you looked at this article on cam degreeing?

http://ducatitech.com/2v/maint/rebuild/headwork.html

I have to admit on this topic im a bit out of my depth. The thing that interests me is that they do this on 750's and it was my understanding that there is not much you can do with a 750 other than the lighened flywheel, clutch, and FCR's
It's something I have mentally toyed with. I'm still studying timing at the moment.
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

MendoDave

I wonder what they would charge for a set of  750 heads? I plan on getting some FCR's and some other stuff this summer.

memper

#177
Good on ya. FCRs next later this month for me.  [clap] (been saving my pennies for a while now)
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

memper

#178
Just measured the Horizontal valves.
Exhaust

O: less than .0015 (went in but pretty snugly)
C: .001 unloaded

Intake

O: less than .0015 (same as exhaust)
C: .0025 unloaded

Another little hang up. The camshaft was binding on the Horizontal head. What causes binding??
I probably installed the closing shim wrong or something.
Also on both pulleys they spun freely until it got to the lobe. Then some friction as if rotating upon a spring. Once past it frees up again. Normal?
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

memper

#179
So I just checked the horizontal cam/rockers again (intake side). If I manually spin the pulley it loosely goes around until it reaches the top rocker lobe. It will pass over the lobe and feels quite stiff (always has so I don't know if its supposed to feel like this). Shortly after clearing the lobe it stops. This occurs clockwise as well as counter clockwise.

I removed the opener shim and slid the top rocker aside (quite difficult-lots of upward pressure was felt). Once aside the cam spun as it once did--freely until the lobe(s) and then some stiffness going over the lobes then freely again. But the pulley went all the way round.

Put the top rocker back on (lots of jiggling and a bit of pushing--very snug), and once again the pulley can go mostly around and then gets jammed. WTF did I do??

*Edit: just watched the video again and the lobes should not be rubbing at all. I most definitely would not be able to turn 360 with one finger.
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.