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860 Old Engine periodic head re-torque ??

Posted: Sun Sep 20, 2020 3:39 am
by Tinkerbell
Hi All,
I have my 860 with 15 000 miles on the clock . The engine looks very undisturbed. Should the bevel's cylinder heads be retorqued at this point? or should I just let them be -- since there seems to be no indication of problems or issues. It is entirely possible that the head bolts have been in place for 45 years --I would hate to rip up some threads in the crankcase in the service of an unnecessary maintenance procedure....
Thanks ,
Kara

Re: 860 Old Engine periodic head re-torque ??

Posted: Mon Sep 21, 2020 12:46 am
by Craig in France
My advice: leave them alone, Kara. They don't have a habit of loosening (I can see you've been around British Iron for too long ... :).

You won't do any damage by retorqueing them ... but you won't necessarily do any good either :-)

On the other hand, it IS a good idea to check the exhaust nuts from time to time. If they start to undo, they can chatter in the thread and damage it. And that can be a right PITA to restore. (Ideally, the nuts should be lock wired).

To tighten the nut without risking breaking off one or more of the fins - they are fragile; you have been warned! :-D - you need a special tool. Irritating, I know; but there you go. These are widely available from the 'Usual Sources' - Steve will sell you one, for example.

The originals looked like this:
Image

(As you may have discovered ....) You also need a special tool for tightening the drive chain. Hopefully, there was one in the tool tray when you got the bike. Should look like this:

Image

If not, they're easy enuf to fashion out of a bit of old gas pipe. Or you go 'splash the cash' and get a ready made one - there's a coupla different models available.

Re: 860 Old Engine periodic head re-torque ??

Posted: Mon Sep 21, 2020 3:09 am
by Tinkerbell
Hi Craig,
You are correct about the British outlook. My horn actually rattled right off the Norton and I never found it again.
I think I will test the head nuts with a wrench to see if any want to tighten, but since these heads have been there since the Flood , I won't back them out unless necessary. I have an exhaust wrench--I don't think safety wire holes have been drilled in the adjacent fins. I have a list of little projects to catch up on. Our weather here in Portland , OR. is starting to turn to the wet and gloomy ( see Germany) and this bike won't really be ready until next season. The two main tasks are to refurb the steering head bearings and refit the original instrument panel and lamps.
Thanks,
Kara

Re: 860 Old Engine periodic head re-torque ??

Posted: Mon Sep 21, 2020 5:11 am
by Craig in France
Tinkerbell wrote: Mon Sep 21, 2020 3:09 am I don't think safety wire holes have been drilled in the adjacent fins.
Ah, you touch on another Ducati mystery :shock: . Sometimes they are ... and sometimes they aren't. And rarely, if ever, on the back.

By no means essential; but easy enuf done, especially during a wet and gloomy Portland winter :).

Look out for the instrument panel. Even when new, they were very prone to split just north of the mounts. And given the passage of time, that won't have improved. Damien Birch in Australia makes excellent and stronger repros, however. I see Steve has them on his list, so that will save you the mailing cost and the potential hassle of getting stuff out of Oz at the mo'.

For Damien's site, go:
https://bevelrubber.com.au/cart/index.p ... oqjj7t01i1

And Steve's:
https://store.bevelheaven.com/Dashboards-etc-a/

Re: 860 Old Engine periodic head re-torque ??

Posted: Mon Sep 21, 2020 7:17 am
by Tinkerbell
Hi Craig,
My instrument panel is already cracked. However, I have a CNC machine and I will make a right angle brace for the attachment and bolster the original. I am not concerned with absolute originality but I do want to keep it reasonably close to stock. I have machined up custom side covers . The left side cover allows the cone filter to protrude a bit and you can see the Dellorto.
Sincerely,
Kara

Re: 860 Old Engine periodic head re-torque ??

Posted: Mon Sep 21, 2020 9:38 am
by Craig in France
Good stuff! You know we will want pictures at the end ... :-D

Re: 860 Old Engine periodic head re-torque ??

Posted: Tue Sep 22, 2020 10:12 am
by Tinkerbell
Hi Craig,
Do you know of a good free photo hosting platform?
I have never used one...
Sincerely,
Kara

Re: 860 Old Engine periodic head re-torque ??

Posted: Tue Sep 22, 2020 10:20 am
by BevHevSteve

Re: 860 Old Engine periodic head re-torque ??

Posted: Tue Sep 22, 2020 3:31 pm
by 81mhr900ss
Kara: I use Imgur: https://imgur.com/

Re: 860 Old Engine periodic head re-torque ??

Posted: Sat Sep 26, 2020 2:06 pm
by geodoc
My personal favorite:

https://postimage.org/




.

Re: 860 Old Engine periodic head re-torque ??

Posted: Sun Sep 27, 2020 1:03 am
by ducadini
I have an exhaust wrench--I don't think safety wire holes have been drilled in the adjacent fins.
There should be four holes drilled between the fins so no need for drilling extra.
Maybe in the head or cylinder or valvecover.
Good enough for wiring the nut.

ciao
ducadini