Katana 1000 engine numbers

[spondonchris]

Hi,
I was looking to buy a Katana 1000 motor recently and I understood all kat 1000 engines started GS10X-

This engine number started GS110X- and was 998cc on the barrels. The seller says the 1000's were made using both GS10X and GS110X- prefixes.
Is this correct?

[Bob1000]

Hmm, mine have both got GS10X numbers...I thought they all did...but I could be wrong...

[Kryten]

Hi,
I was looking to buy a Katana 1000 motor recently and I understood all kat 1000 engines started GS10X-

This engine number started GS110X- and was 998cc on the barrels. The seller says the 1000's were made using both GS10X and GS110X- prefixes.
Is this correct?

Hi Chris

As far as I am aware the ex factory engines (and frames) would have had a GS10X prefix.

Of course the engine could have been rebuilt into a set of 1100 cases and used the 998cc barrels.

[spondonchris]

The seller is adament that the GS10X engines predated the katana model. He quoted one of Pip Highams ET's, the deuce, as having GS10X engine number before the katana 1000.
I was under the impression GS10X engines were always Katan, but I am wanting to find which is correct.

[Uncle Bob]

The Deuce info is from a Bonhams sale back in 2005! The sale info says that bike was a pre-production one, so engine number "could" be different to production numbers, however...

...From this page ( https://www.streetfighters.com.au/archi ... -8628.html ), an interesting last comment in the thread...
"Yeah Pip Higham ran the bike in the early 80s. It was the first GSX1100 in Europe. The frame number ended in 000002 so he called it the Deuce. There was an article about it in Superbike magazine. He later broke it down and stored the chassis in his workshop attic. I turned up during the winter of 82/83 and bought the rolling chassis and a 1000cc stock Katana engine off Jack Valentine of V&M racing and Valmoto fame. I ran it in road legal class Sprints with modded CV carbs, see picture 2, best time 10.37 at 134mph. Then in 1984 I spent a lot more money and started to race it in Pro Stock 1260 and 1325cc.Blew the engine twice, the second time after letting some other wa**er fettle the engine. Never raced again and sold it back to Pip to put in his home museum."

From that comment, you could deduce that the GS10X engine it had in it, isn't the original engine and is in fact a Katana 1000 engine maybe, which does negate the sellers comments about engine numbering....

...which really points more to Kryten's comment about it being a 1100 bottom end with 1000 top end. If you had a 1000 engine and it blew up in a big way, what bottom end are you likely to get if you really need one...?

UB

[spondonchris]

I'll ask Pip and see if he knows, cheers

[spondonchris]

well, I spoke to Pip, and he confirms the engine in the deuce was a GS110X engine not a GS10X. He also agreed that kat 1000 motors are all GS10X as far as he was aware.
So not sure the sellers engine is an original kat 1000 engine as he seems to think.