Gen. cover ID

[Swiss Toni]

Can anyone ID this cover? It came off 'that' 6 speed GSX motor. 

[Simbec1863]

Looks like the one on my 1100 motor but maybe there are a few that look the same

[Duckndive]

All the 1100 covers swop ....the only odd one is a 1000cc Kat with the smaller genny windings ...but it still fits the cases

DONT USE A 750 cover if you want the engine to last more than 5 mins

 

Edited December 4, 2018 by Duckndive

[Swiss Toni]

1 hour ago, Simbec1863 said:

Looks like the one on my 1100 motor but maybe there are a few that look the same

It looks pretty much as shallow as yours, Si!

 

37 minutes ago, Duckndive said:

All the 1100 covers swop ....the only odd one is a 1000cc Kat with the smaller genny windings ...but it still fits the cases

DONT USE A 750 cover if you want the engine to last more than 5 mins

 

I've tried a few 1100 covers on the cases, Clive. I know they swap over quite easily. But ... if I go for another case (not as shallow), I'll have to change rotor & stator (different mounting) = More money!

And, what's the story with the 750 cover demolishing the 1100 motor?

[Duckndive]

20 minutes ago, Swiss Toni said:

It looks pretty much as shallow as yours, Si!

 

I've tried a few 1100 covers on the cases, Clive. I know they swap over quite easily. But ... if I go for another case (not as shallow), I'll have to change rotor & stator (different mounting) = More money!

And, what's the story with the 750 cover demolishing the 1100 motor?

And you have measured the mounting positioning to confirm that have you .? 

[Gammaboy]

1100 cover has a casting that seals off the end of the main gallery across the back of the motor. 750 oiling is different, and 750 cover doesn't have the casting, so 750 cover on 1100 results in all the oil pressure dissappearing into the end cover and straight back to the sump.

Can you post another shot of the inside of it but including all of the cover?

Also, can you measure the diameter of the register that the stator locates on? My Guess is that that's the small stator Kat cover.

Edited December 4, 2018 by Gammaboy

[arnout]

That's clearly an 1100SZ Katana generator cover as it is stamped 4930. ("493" means Katana specific part).

The rotor on an SZ Katana has a smaller diameter than the one on the "regular" ET. So I guess to suit both the smaller stator and rotor the different cover was needed. An ET cover will however fit onto a Katana engine, but I don't know if the stator will bolt up. (I'm not sure but I suspect the bolt PCD might be smaller. The subject has been discussed before on this forum or one of it's  predecessors, so a thorough search might be useful).

[Swiss Toni]

Arnout. You're right about the cover taking a smaller generator winding! Other ones I have won't fit, due to PCD being different. Right again! More clues are pointing to this mystery motor being a 1000 Katana. I believe Katana rods are stronger than std. and bear a specific code? Another clue? Are there any more  Kat only clues to determine its identity?

[Swiss Toni]

@GammaboyPic as requested. Stator register in cover comes out at 35mm. 

[Swiss Toni]

And here's the rod code. 

[Duckndive]

7 hours ago, Swiss Toni said:

Arnout. You're right about the cover taking a smaller generator winding! Other ones I have won't fit, due to PCD being different. Right again! More clues are pointing to this mystery motor being a 1000 Katana. I believe Katana rods are stronger than std. and bear a specific code? Another clue? Are there any more  Kat only clues to determine its identity?

Err I said it was a Kat 1000 motor back on the 10th nov 

but the Gurls blouse gearbox was not in it........

[Swiss Toni]

17 minutes ago, Duckndive said:

Err I said it was a Kat 1000 motor back on the 10th nov 

but the Gurls blouse gearbox was not in it........

Sorry, mate! Senior moment!

[Gammaboy]

11 hours ago, Swiss Toni said:

@GammaboyPic as requested. Stator register in cover comes out at 35mm. 

Yep, small rotor Katana 1000/1100 cover.

[johnr]

kat 1000 engines have gs10 engine numbers.

 

Edited December 5, 2018 by johnr

[johnr]

also the barrels will be stamped with 998cc rather than 1075cc

 

[no class]

8 hours ago, Swiss Toni said:

And here's the rod code. 

my spare Kat 1100 motor has these markings as well .

[Swiss Toni]

@johnrBarrels are indeed stamped 998. Present cases (the ones that replaced the un-numbered cases) are GS110X. So, the crank and 493 rods may well be 1000/1100 Katana! 

Edited December 5, 2018 by Swiss Toni

[johnr]

493 rods are kat 1000 rods, but they will fit the 11 as well, theyre just beefier than the stock kat 11 rods. ive seen folks with engines putting 300bhp+ through 493 rods. sounds like youve scored a kat 1000 motor built into a set of 1100 cases. what cc is it running?

Edited December 5, 2018 by johnr

[johnr]

if its still on 1000cc you can fit 1100 barrels and pistons to it to boost it a bit, perhaps even drop the 1000 liners out and drop 1100 liners in to it so it still appears to be 1000cc.

[Swiss Toni]

Cheers, John.   Its still running the 998 barrels! They'll go back on when I build it. It also had slide carbs on when I got it, years ago which with, I've since found out, the 1000 Katana was fitted. 

[johnr]

yep, and th kat 1000 carbs are worth good money on their own!