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Discussion Starter #1
Is there a special tool required to get the head bolts off an ST4 or 916? It look as if it's a pretty tight squeeze. Something non-Ducati available?

Didn't find anything when searching this site.

Thanks.
 
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Re: Head bolt removal tool (DanST4)

no you can remove them with a wrench,but reinstalling them you need a u shaped special tool from ducati so you can torque them correctly, i think i paid like 100.00 for it i think,



ray
 
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Re: Head bolt removal tool (ducray)

Thanks. I was thinking there's probably a tool out there for a lot less then the Ducati special tool. $100 for a tool I'll use once every few years... but if I have to, then I have to.

Thanks.
 
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Re: Head bolt removal tool (DanST4)

You can actually use any tool that will fit in there. It doesn't take any magic. Just grind up a wrench so it will fit, and weld a socket onto it. Then, to torque it, put a swivel in the welded on socket, put a 6" extension (or longer) in that, and then the torque wrench. Dial the torque directly into the torque wrench. You don't have to do any fancy calculations for the length of the tool. If my description is confusing, I can take a pic of something similar to what I'm describing.

The reason this works is because of the swivel. By using it, you are forced to hold the head of the torque wrench, and only transmit twisting force to the tool you made.
 
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Discussion Starter #6
Re: Head bolt removal tool (moto)

moto,thats for the steering head,i think he needs a cylinder head tool,
 
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Discussion Starter #7
Thanks for all the responses. This site is top notch!
 
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Discussion Starter #8
Re: Head bolt removal tool (DanST4)

Dan,

There was a guy on Ducati.net recently who says he has made a special tool.

I have e-mailed him for a picture of same. Will post it when I get it.

Cheers,

Barry
 
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Re: Head bolt removal tool (billywiztheelder)

I went to Lowe's and picked up a 15mm box end wrench and a 9mm socket and brought both to my local muffler shop. Since it is nearly impossible to find a box end wrench without the box being offset, I had the shop grind an angle into the socket so the box end and socket were on the same plane. I also ground the box end thinner by about 4mm or so. Wrench was $10, socket was $3 and welding was $20. This looks nothing like the new style C-shaped tool, but the older style as seen in the Haynes manual. Works the same though as long as you keep the torque wrench 90* to the tool.
 
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Re: Head bolt removal tool (Nick D.)

hi nick, i think with your tool there is a torque multipication because of the offset,that is y the factory tool has the torque wrench directly above the bolt i think you have to do a little math to get the torque reading right, please correct me if i am wrong, any body else agree or disagree???????
 
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Re: Head bolt removal tool (ducray)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ducray »</TD></TR><TR><TD CLASS="quote">hi nick, i think with your tool there is a torque multipication because of the offset,that is y the factory tool has the torque wrench directly above the bolt i think you have to do a little math to get the torque reading right, please correct me if i am wrong, any body else agree or disagree???????</TD></TR></TABLE>

Ducray: Please read my post. I am not some wanker trying to get you to do something to harm your bike. This procedure works, and you don't have to do the 90 degree thing, nor any math of any sort. I can post a pic if my description is confusing. A number of people have doubted this procedure, and tried it out on a Snap-On torque wrench calibrator. It works.
 
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Discussion Starter #12
Re: Head bolt removal tool (DanST4)

Here's a couple pics of Rich Roberts' head-nut wrenches:


 
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Re: Head bolt removal tool (infoage1)

first of all i do not think you are a wanker or trying to tell some won to do something wrong to a bike and i did read your post, and i am sorry but i still think you are wrong!!!!!
 
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Re: Head bolt removal tool (ducray)

I understand. I was skeptical at first, too. It's not something that's taught anywhere I can find. The only place I have ever seen it was in the BMWMOA magazine. In case anyone's interested:




Modified by Hedgehog at 9:18 AM 1/21/2004
 
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Re: Head bolt removal tool (ducray)

"i think with your tool there is a torque multipication because of the offset,that is y the factory tool has the torque wrench directly above the bolt i think you have to do a little math to get the torque reading right"

There would be some math required if I used the tool as an extension of the torque wrench, but as long as I keep a 90* angle between the tool and torque wrench, there shouldn't be any problem.
 
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Discussion Starter #16
Re: Head bolt removal tool (Nick D.)

I am sure this has been asked before, but can you use a crows foot wrench to torque the head?
 
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Re: Head bolt removal tool (cdansan)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cdansan »</TD></TR><TR><TD CLASS="quote">I am sure this has been asked before, but can you use a crows foot wrench to torque the head? </TD></TR></TABLE>

Humm I don't believe you can get a crows foot on each nut plus you have the slippage problem being an open end you might with a box end style though. I do know I need to have one something made as I have my heads off right now and will need a way to torque them down
 
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Discussion Starter #18
Re: Head bolt removal tool (DanST4)

Is anybody up for making some of these wrenches?

I need one, and I really hate to use my welderbuddy favors up on something so small.
 
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Discussion Starter #19
Re: Head bolt removal tool (Nick D.)

I think it would be something like this:


Where:
a: Length of extension [m]
b: Length of torque wrench (where you apply force) [m]
w1: Setting on wrench [Nm]
w2: Required torque [Nm]

(But: Don't trust me, do your own math
 
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Re: Head bolt removal tool (Hedgehog)

A tool I've used on my Buell heads is called a "torque adapter". about $30. bucks and used in conjunction with a torque wrench would fit into that tight head nut space easily. Snap-On number FRDH-161 I think. And yes, there is a torque correction formula ( I have it ).
 
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