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 Post subject: Letters stamped onto Heads
PostPosted: Wed Jul 25, 2012 11:27 pm 
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Joined: Mon Aug 30, 2010 3:15 am
Posts: 90
Location: Denmark, Western Australia
model: 906 Paso
year: 1989
I am wondering if anyone can tell me what the letters "HU" stamped into the Heads on my 906 are for, i noticed them the other day when i was fiting new Coils and thought that they may have been stamped by the previous owner but then i was having a look at EBay Paso parts and here is a pair of 907 Heads in the USA and in the picture can be clearly seen the "HU" stamping as well, just curious.

Thanks
Harry


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 Post subject: Re: Letters stamped onto Heads
PostPosted: Wed Jul 25, 2012 11:29 pm 
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paso grand pooh-bah
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Joined: Tue Jul 29, 2008 9:50 pm
Posts: 3232
Location: Hilltown,Pennsylvania
model: 906 Paso
year: 1990
just a stab in the dark, My guess would be it identifies the foundry wherer the heads got cast

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Ducati,making mechanics out of riders since 1946
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie


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 Post subject: Re: Letters stamped onto Heads
PostPosted: Thu Jul 26, 2012 9:07 am 
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paso grand pooh-bah
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Joined: Thu Nov 03, 2011 10:13 am
Posts: 754
Location: Scotland
model: 907 I.E.
year: 1994
There is also a letter 'B' stamped on the top fin of my 907 heads. On the carb Monster 750 models the heads marked 'V2' were the ones to have, those marked 'W' had smaller inlet valves. It may indicate that the heads have the sliding clip to enable the inlet rocker to slide along for access to the shims even though these heads got the gold valve covers.

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 Post subject: Re: Letters stamped onto Heads
PostPosted: Thu Jul 26, 2012 7:29 pm 
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paso grand pooh-bah
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Joined: Thu Nov 03, 2011 10:13 am
Posts: 754
Location: Scotland
model: 907 I.E.
year: 1994
Derek wrote:
There is also a letter 'B' stamped on the top fin of my 907 heads. On the carb Monster 750 models the heads marked 'V2' were the ones to have, those marked 'W' had smaller inlet valves. It may indicate that the heads have the sliding clip to enable the inlet rocker to slide along for access to the shims even though these heads got the gold valve covers.

The ST2 heads are stamped with 'HZ', so perhaps the H indicates water cooled and the U and Z are different versions. Just guessing really.

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1982 Pantah 500SL (now sold)


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