550 w/modular wheels torque - Ferrari Life
 
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post #1 of 10 Old 05-01-2013, 11:26 AM Thread Starter
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550 w/modular wheels torque

Does anyone have the torque spec for the rim half screws? I would presume they be should periodically re-torqued...And, what type of fastener is that? I thought that I had 'seen them all' but evidently not.

(I've got 3-piece BBS LM wheels on my 365bb that are checked annually, hence the question.)

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post #2 of 10 Old 05-01-2013, 11:35 AM
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David- The 360, 550/Barchetta, and 575M all have similar optional wheels, and none of the WSMs have any data on torquing the wheel rim fasteners.

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post #3 of 10 Old 05-01-2013, 11:58 AM
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Quote:
Originally Posted by fastradio2 View Post
Does anyone have the torque spec for the rim half screws? I would presume they be should periodically re-torqued...And, what type of fastener is that? I thought that I had 'seen them all' but evidently not.

(I've got 3-piece BBS LM wheels on my 365bb that are checked annually, hence the question.)

Thanks,
David
David, when taking one of these apart I used an inch pound torque wrench to undo them and noted what the torque was to break them loose as a ballpark, it's not much. But more importantly they have a sealant/loctite type material on them helping to secure them in place. Assumed because of this that they would not need to be checked. Open to learning if my assumption is wrong. When I did remove them, cleaned and reapplied new appropriate grade Loctite before installation.

Not sure if 18 inch modular is the same but for the 19 inch modular wheel the tool involved was called a "metric 8mm triple square".
Mine came from Snap On, link below.
FTSM8E, Socket Driver, Metric, Triple Square, Standard, 8 mm

Bill
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Last edited by KonaDog06; 05-01-2013 at 10:36 PM. Reason: Additional information
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post #4 of 10 Old 05-01-2013, 04:33 PM
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Good question David. I've always used 20ft. lbs. as a default torque spec on 3pc. wheels. I have seen recommendations span from 19ft. lbs. to 22 ft. lbs though, personally.


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post #5 of 10 Old 05-02-2013, 07:48 AM Thread Starter
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Quote:
Originally Posted by KonaDog06 View Post
David, when taking one of these apart I used an inch pound torque wrench to undo them and noted what the torque was to break them loose as a ballpark, it's not much.
Hmmm, break-away torque really isn't a safe judge of tightness...as there's just too many variables in play, including that Loctite compound.

Quote:
Originally Posted by KonaDog06 View Post
Not sure if 18 inch modular is the same but for the 19 inch modular wheel the tool involved was called a "metric 8mm triple square".
Mine came from Snap On, link below.
FTSM8E, Socket Driver, Metric, Triple Square, Standard, 8 mm

Bill
What's I've got is the female of that triple square...Thank you, though!

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post #6 of 10 Old 05-02-2013, 07:51 AM Thread Starter
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Quote:
Originally Posted by ECSofVirginia View Post
Good question David. I've always used 20ft. lbs. as a default torque spec on 3pc. wheels. I have seen recommendations span from 19ft. lbs. to 22 ft. lbs though, personally.
Josh, that figure sounds a bit high based on what I think the fastener size is, although it's marked 12.9!! And, of course, I can't find the specs on the BBS LM wheel that I have here, either.At least for the BBS bolts, they're 6mm in diameter, I think...

Onward to other more fun tasks...

BTW, I got a call today on a Gallardo. Is that like an Italian Audi?

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post #7 of 10 Old 05-02-2013, 07:54 AM
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Originally Posted by fastradio2 View Post

BTW, I got a call today on a Gallardo. Is that like an Italian Audi?
Yep. I love working on those cars. Easy money.


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post #8 of 10 Old 05-02-2013, 08:12 AM
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Do not retorque!!!!
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post #9 of 10 Old 05-02-2013, 08:44 AM Thread Starter
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Do not retorque!!!!
Thanks Brian. I'd then presume that they're some sort of a TTY fastener, then?

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post #10 of 10 Old 05-02-2013, 09:03 AM
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Quote:
Originally Posted by fastradio2 View Post
Hmmm, break-away torque really isn't a safe judge of tightness...as there's just too many variables in play, including that Loctite compound.

What's I've got is the female of that triple square...Thank you, though!
Re break-away,
David, I suggested using break-away as a ballpark. Common sense and experience have to step in as it is a small fastener and it is going into a small aluminum hole. I agree that 20 ft lbs seems high from memory but I'm not a professional.

The tool suggested is a male fitted to a socket. The fasteners on the 19" 575 modular wheel are also female.

What Brian says, makes sense to me. Mine were only disassembled to repaint and a Loctite relative to the tightening torque was used upon assembly.
Bill
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