Testastretta Valve clearances

[BrianG]

Be advised of new settings by Ducati made in 2007 retroactive to all testas:
.002” for closers and .005” for openers

[mr-x]

Originally Posted by BrianG

Be advised of new settings by Ducati made in 2007 retroactive to all testas:
.002” for closers and .005” for openers

that is incorrect there tare two seperate valve clearance specs. assembly and inspection and they are not set values they are min and max values.

[RatFink749]

Originally Posted by mr-x

that is incorrect there tare two seperate valve clearance specs. assembly and inspection and they are not set values they are min and max values.

Soo.. Maybe instead of saying "you're wrong!" you could help the rest of us out and post said values and the difference between the assembly and inspection readings? Just a thought...

[kaos]

i think the .002-.005 are the numbers to strive for when doing your clearance's.ducatis origial specs had a pretty big range that was great for not needing adjustments ,but flawed for optimum performance

[jsrussell]

Originally Posted by kaos

i think the .002-.005 are the numbers to strive for when doing your clearance's.ducatis origial specs had a pretty big range that was great for not needing adjustments ,but flawed for optimum performance

sounds about right

[MultiDoc]

Any chance someone posts the clearances in milimeters ? Both optimum and the whole range ?

[RatFink749]

Originally Posted by MultiDoc

Any chance someone posts the clearances in milimeters ? Both optimum and the whole range ?

Multiply (inches meausrement) X 25.4 = MM

[MultiDoc]

Originally Posted by RatFink749

Multiply (inches meausrement) X 25.4 = MM

Thank you.

So optimal clearances are for openers: 0.05mm and for closers: 0.127mm

Right ?

[12guage]

My factory service manual gives the following clearances for the standard Testastretta head:

Opening rocker arm
Intake Clearance:
Nominal 0.20 mm
Operation 0.18–0.23 mm
Check 0.10–0.25 mm
Exhaust Clearance:
Nominal 0.20 mm
Operation 0.18–0.23 mm
Check 0.10–0.25 mm

Closing rocker arm
Intake Clearance:
Nominal 0.15 mm
Operation 0.13–0.18 mm
Check 0.10–0.25 mm
Exhaust Clearance:
Nominal 0.15 mm
Operation 0.13–0.18 mm
Check 0.10–0.25 mm

The manual gives three values:
Operation - Installation Value
Check - Value when checking during normal services
Nominal - Mean clearance which would be the spot-on clearance

The Nominal for Openers is: 0.20mm (.008")
The Nominal for Closers is: 0.15mm (.006")
Both could be within a range of 0.10mm ~ 0.25mm (.004"~.010"). My understanding is this clearance assures extended periods between adjustments (not a bad thing for the street rider who racks up more than 6,000 mi. per year) and assures, as the valves get hot and change length (as they do on the street), they still have a bit of lash in the valvetrain.

[Ductor]

Ok, now I am all f**d up.
the manual states something different. when did Ducati come out with the new numbers and where?
also, when you guys do your Testa valves, do you take measurments like the Ducati manual shows? I am doing one today and taking numbers from the opening and closing rockers and cam lobes like Ducati shows in the book..Am I wrong?



thanks,