Mach 1 valve clearance

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nalimugmug
Posts: 121
Joined: Mon Sep 12, 2011 3:40 pm
Location: South Glos UK

Mach 1 valve clearance

Postby nalimugmug » Sun Apr 19, 2020 8:48 pm

Hi,

Hope your all safe and well at this troubling time-

Simple question, are the clearances checked hot or cold?

The amount of information to be found in this site is incredible, thanks to all of you who contribute. This might sound like a strange ask, however, does anybody have a pic of the late DewCatTea Bob?

Thanks and take care

Bob

graeme
Posts: 1006
Joined: Sun Mar 25, 2012 12:00 am
Location: Tasmania Australia

Re: Mach 1 valve clearance

Postby graeme » Sun Apr 19, 2020 9:21 pm

Cold

nalimugmug
Posts: 121
Joined: Mon Sep 12, 2011 3:40 pm
Location: South Glos UK

Re: Mach 1 valve clearance

Postby nalimugmug » Mon Apr 20, 2020 7:41 am

Thanks Graeme.

Bob

nalimugmug
Posts: 121
Joined: Mon Sep 12, 2011 3:40 pm
Location: South Glos UK

Re: Mach 1 valve clearance

Postby nalimugmug » Mon Apr 20, 2020 1:03 pm

Hi again,

Posted on this site from the The Ducati workshop manual

Inlet .15mm
Ex .30mm

Mick Walkers book, restoring Ducati singles

Inlet .15mm
Ex .25mm

Which one should I go by?

Thanks

Bob

Bevel bob
Posts: 1097
Joined: Thu Apr 15, 2010 8:01 am
Location: Bromley Kent UK.

Re: Mach 1 valve clearance

Postby Bevel bob » Mon Apr 20, 2020 6:30 pm

I used 5 and 7 thou back in the day and the bike was timed at 104mph ,but if you use all the revs a lot the clearances can close up as the valves hammer the seats so you need to keep a check on it.

nalimugmug
Posts: 121
Joined: Mon Sep 12, 2011 3:40 pm
Location: South Glos UK

Re: Mach 1 valve clearance

Postby nalimugmug » Mon Apr 20, 2020 8:20 pm

Thanks Bevel bob

Bob

Ventodue
Posts: 960
Joined: Mon Mar 08, 2010 3:23 pm
Location: Montpellier, France

Re: Mach 1 valve clearance

Postby Ventodue » Tue Apr 21, 2020 9:57 am

nalimugmug wrote:<snip>
Posted on this site from the The Ducati workshop manual

Inlet .15mm
Ex .30mm

The same values are given in the owner's handbook(s) ;) .


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