Hello Guest User,

Please feel free to have a look around the forum but be aware that as an unregistered guest you can't see all of it and you can't post.

To access these 'Registered Users Only' areas simply register and login.

Mk11 barrels and head on Z1 bottom end

Need help restoring, building, or finding then try here.

Moderators: chrisu, paul doran, Taffus, KeithZ1R

Message
Author
Padders
Hardcore
Hardcore
Posts: 3043
Joined: 15th Jan 2006
Location: Grimsby Lincolnshire

Mk11 barrels and head on Z1 bottom end

#1 PostAuthor: Padders » Wed Sep 13, 2017 7:11 pm

I am looking to put if possible a set of ST barrels and head inc camshafts onto a Z1 bottom end. Is this going to be a ball ache of a job it is it a simple job. My concerns being the the MK11 ST having different cam chain etc.

Thanks
PUM 13

User avatar
zed1015
Hardcore
Hardcore
Posts: 3798
Joined: 2nd Nov 2005
Location: Somewhere between Scunny and Goole.

Re: Mk11 barrels and head on Z1 bottom end

#2 PostAuthor: zed1015 » Wed Sep 13, 2017 7:20 pm

MK2 barrel and head are the same as z900/1000 so will fit straight on. (round camcover fits too)
Just check that the Z9 crankcase mouths will take the bigger dia liners.
Some early ones need opening up slightly (simple to do with a hand file or rotary burr but best done on bare cases to make it an easy job)
Mk2 cams are the same as all z1/z1000 but it is the 32 teeth sprockets that are different to match the bigger 16 tooth crank and longer 124 lo link chain.
Simply fit earlier 30 teeth sprockets to match the z1's 15 tooth crank and 122 link chain.

Padders
Hardcore
Hardcore
Posts: 3043
Joined: 15th Jan 2006
Location: Grimsby Lincolnshire

Re: Mk11 barrels and head on Z1 bottom end

#3 PostAuthor: Padders » Wed Sep 13, 2017 7:27 pm

Cheers Rob much appreciated. These are 72 cases so will check to see if need opening up. The barrels have a new 1105 big bore kit fitted.
PUM 13

User avatar
Pigford
I'm on prescription!!
Posts: 10566
Joined: 2nd Jan 2006
Location: Hampshire Coast UK

Re: Mk11 barrels and head on Z1 bottom end

#4 PostAuthor: Pigford » Wed Sep 13, 2017 7:50 pm

On my last project (MkII style engine - Z1000B4) I fitted the prettier round cam cover ..... but had to change the top idle sprocket so the cover would fit.
The MkII idler had an off-set bracket whereas the replacement was straight.

From the righthand style to the lefthand style:

Image
And on the 7th day... Zeds were created!

Padders
Hardcore
Hardcore
Posts: 3043
Joined: 15th Jan 2006
Location: Grimsby Lincolnshire

Re: Mk11 barrels and head on Z1 bottom end

#5 PostAuthor: Padders » Thu Sep 14, 2017 12:23 pm

Thanks for the info Mark
PUM 13

User avatar
Big Fluff
Hardcore
Hardcore
Posts: 2541
Joined: 1st Mar 2007
Location: Marbury, Shropshire

Re: Mk11 barrels and head on Z1 bottom end

#6 PostAuthor: Big Fluff » Sat Sep 16, 2017 9:36 am

Padders wrote:Cheers Rob much appreciated. These are 72 cases so will check to see if need opening up. The barrels have a new 1105 big bore kit fitted.

Personally I wouldn't fit that block if you intend on giving it any hard work to do.
I would imaging that the barrels you are thinking of fitting are standard 1015 bored to the maximum 1105. this leaved the liners very thin at the bottom which can distort under hard work and rub the pistons. I have also known the liners to move in the block and very slightly warp.
Personally I'd try and find a standard 1025 block and bore it to 1075.
If however, you have to open up the crankcase mouths anyway (which I very much expect you will have to on 72 cases), I would have this spare block resleeved with bigger liners that can go out to 1325 like I did on the Saxon. You can then start at 1135 and go all the way to 1325 in 1 mm increments (piston supply dependant).
Yes it's going to cost you a piston kit, but if you stay with the 1105 it might no last long anyway.
Hope this helps, Will
Kawasaki GPz750T, Kawasaki ZRX1100R, Kawasaki GPZ1000RX, H**** VF1000RG Rothmans, H**** VF500F2F, H**** CB1100RD, Suzuki GSX1100EFE, H**** XL125K2


Return to “Bike Help”

Who is online

Users browsing this forum: Bing [Bot] and 100 guests