A diversion...

[Luddite]

...no, not the Yamaha kind :rolleyes:

OLTKuVmHZ5g

[Moco1961]

Vince, good spot, interesting !

[Darkness]

An interesting feature thanks @Luddite.

[damien666]

I enjoyed that. Cheers.
Time will tell if the new audience approves or not.
There might be some discounts coming..... :o

[Omar]

Very good, thanks.

[Darren69]

Thanks for posting, good video, I enjoyed watching that. A good overview but few inaccuracies and omissions but not bad overall. For those interested in more detail and background and history I can certainly recommend Ian Falloons excellent Monster Bible book. The presentation style was a bit too much of him waving his arms about vs relevant footage but I'm probably nit-picking? The included humour was quite good and made it more entertaining.

[Darkness]

I was a little surprised by the comment that the M600 saved Ducati rather than the M900. The production costs must have been very similar as there are few differences between the two bikes, but the profit per unit must have been far lower on the 600 because of the big difference in the sale prices. £5,550 to buy the M600 against £8,100 in October 1995 to buy the M900 with it’s Showa non-adjustable forks not Marzochi, double front disk brake, seat cowl, fatter rear wheel, carbon fibre side panels and larger holes and pistons in the engine. Nowhere near £2,550 extra in value, though if you wanted the 900 that’s what you had to pay!

[Dukedesmo]

I was a little surprised by the comment that the M600 saved Ducati rather than the M900. The production costs must have been very similar as there are few differences between the two bikes, but the profit per unit must have been far lower on the 600 because of the big difference in the sale prices. £5,000 to buy the M600 against £7,500 to buy the M900 with it’s Showa non-adjustable forks not Marzochi, double front disk brake, seat cowl, fatter rear wheel, carbon fibre side panels and larger holes and pistons in the engine. Nowhere near £2,500 extra in value, though if you wanted the 900 that’s what you had to pay!

Presumably, down to volume? Though I don't know how many 600 vs 900 were sold.

[Darren69]

TBH I think it was probably a combination of both, the M900 got the ball rolling and became the popular style and subsequently the much cheaper M600 sold by the bucketload.

[Jez900ie]

...no, not the Yamaha kind :rolleyes:

OLTKuVmHZ5g

Great video, enjoyed it greatly -thank you!

I don't know much about the inaccuracies, though that business of making the 900 engine worse to claim the 900S was better seemed poor?

I guess I liked it because it was interesting/ informative, about my favourite bike, pretty funny in places and I agreed with most of his opinions.

[Darkness]

...I don't know much about the inaccuracies, though that business of making the 900 engine worse to claim the 900S was better seemed poor?

I’m sure that I read somewhere that Ducati had a batch of Cagiva spec. 900 engines with the smaller 750 valve size going spare and that those were utilised in the M900 from about 1996.

The first few years of M900 production had the full power 900SS spec engine that was reintroduced in the M900S. You can tell which you have from the casting marks on the exterior of the heads, to the left of the cam bearing cover. V2 means big valves (Like the 900SS) and W means smaller valves (Like the 750). Different cams are fitted with each of these.

Brad the Bike Boy has some dyno data here:

http://bradthebikeboy.blogspot.com/2012/11/ducati-900-w-heads-vs-v-heads.html

[Darren69]

Great video, enjoyed it greatly -thank you!

I don't know much about the inaccuracies, though that business of making the 900 engine worse to claim the 900S was better seemed poor?

I guess I liked it because it was interesting/ informative, about my favourite bike, pretty funny in places and I agreed with most of his opinions.

That's what they did though, they fitted 750 heads to the standard 900 and made the original one the 'S' version.

[jerry]

big sales figures for M750 in USA and the M600 in Continental Europe on price ,,

[Jez900ie]

Hi Darkness

Do you refer to the V3 pictured?

https://i.postimg.cc/Y960rBJd/V3.jpg (https://postimg.cc/WF4T8CpZ)

Of course its never mattered before, but now... Ohmigod!

JEZ

[Luddite]

Hi Darkness

Do you refer to the V3 pictured?

https://i.postimg.cc/Y960rBJd/V3.jpg (https://postimg.cc/WF4T8CpZ)

JEZ

I seem to remember reading somewhere that the V1 and V2 heads were so marked because their valve seats and guides were made from different materials. So maybe the V3 have different seats and guides again.

[Jez900ie]

I seem to remember reading somewhere that the V1 and V2 heads were so marked because their valve seats and guides were made from different materials. So maybe the V3 have different seats and guides again.

But... Can I assume now that I don't have the awful, no good, small W ones? Arrrghhh!

[Luddite]

But... Can I assume now that I don't have the awful, no good, small W ones? Arrrghhh!

The "Vs" are definitely the high power heads, whatever suffix number they may have. :thumbsup:

[Mr Gazza]

You have an M900ie which did not use the smaller heads. I also have an M900ie but it is stamped V2 representing the larger valve sizes.
I must admit that I have not come across the V3 stamp before, so I'm afraid I can't allude to it's meaning.

[Kato]

So Just to clear this up

W - 750/900 small valve Hemispherical combustion chamber OR/VR Cams
V - 900 big valve Bathtub combustion chamber OHT/VHT Cams

From january '92 up, all engines came with aluminum-bronze (replacing the cast iron)
valve guides and a "V" on the heads,

V1 revised valve seat
V2 had revised oil feed
Unsure when the crossover was but
V3 late injection 08J/V8J cams head is fully interchangeable with V,V1,V2

Some heads manufactured prior to 92 were revised at the factory so it does get confusing as its possible to have a 90/91 manufacturing date on a head that has 1992 spec

The cam id used is what they came out of the factory with don't take it as gospel as many people swapped 08J/V8J into earlier heads or if lucky you might find OHZ/VHZ (ST2) or GMO9/GMV9 (Ducati Performance)

[Jez900ie]

....sighs & lets out a huge breath of relief...

That must mean I can still go fast!

Thanks everyone - you've totally made my night.