John's 09 Project-1275 K-1100 Twin Cam / 16-V conversion

[bomber01]

1275 K-1100 Twin Cam Conversion .. Shamrock Twinkie .

John’s 2009 Project
Mini 1275 / K-1100 16 valve Twin cam Conversion.
Code name ; Shamrock Twinkie. ( first in Ireland )

I have for some time been toying with the idea of fitting a BMW k- 1100 motor bike head which has 16 valves and twin overhead cams to a mini 1275 block thus keeping of the engine block / gearbox and drive train mini . The ultimate aim is to produce a engine capable of up to 160 BHP with the reliability of a modern engine. Now this may seem quite a straight forward conversion but unfortunately it’s not, it needs a lot of careful planning. Some kits are appearing on the market now, but even with these kits a lot of other mods are required.
In this thread I hope to bring you through my build experiences step by step with the help of some photos of the build.
•The Block.
I am going to kick off with the block which is a standard mini 1275 block stripped down bare and chemically cleaned. The block must be modified to suit the k- 1100 head stud holes, this means blanking off some of the old ones and redrilling and tapping new ones, decking of the block,
A rebore of the bores +20,new cam bearings , new core plugs , redrill and tap engine flange
8 mm……. see photo below …. more to follow.
[IMG:1024:768]http://i219.photobucket.com/albums/cc67/lancasterj/DSCF0089-1.jpg[/img]
This is a dummy run on the head fitment ensuring all studs line up and
the head to a nice sliding fit on them..
[IMG:1024:768]http://i219.photobucket.com/albums/cc67/lancasterj/DSCF0096-1.jpg[/img]
[IMG:768:1024]http://i219.photobucket.com/albums/cc67/lancasterj/DSCF0108.jpg[/img]
Block back from Harris Motor Sport's workshop , so started work on head mods ....photos soon. A big thanks to Harris Motor Sport for their work on the block.
[IMG:320:240]http://i219.photobucket.com/albums/cc67/lancasterj/Image023.jpg[/img]
[IMG:320:240]http://i219.photobucket.com/albums/cc67/lancasterj/Image022.jpg[/img]
john

[MiniMpi]

Best of luck with the project John
Really looking forward to this done.

[irlmin]

This is a brilliant project ,I know John has put a lot of work into the research of this and it is now time for action , it will be awsome . in this 50th birthday year there are some really mad classics being built and just built in the MCOI , John's 16V , Pauli's mid engined 2.0 Vtec . Starry's Supercharged 'retro' and we have 4 more supercharger conversions booked in . so it will be an interesting year . keep the pics coming john as things move along .
G

[inny1300]

Good luck with the project,i have read about this on paper and played with a few bike's year's back,but this conversion sound's awesome,look forward to seeing it finished ,regard's jon there are a few as Ger has said with well modified classic's coming out now out of the MCOI,well done to you all

[Starrywalsh]

Best of luck with the project John, I know Pat Maher from Waterford was talking about doing something very similar when he is finished with his 1960 mk1 project.

[iwanagofast]

Good luck john, should be mad when its finished

[Ciaran]

Nice project. Are these engines capable of reliably producing 160bhp?? what, gearbox are you planning to use? SCCR?? What are you going to do with the bonnet when you have 4 webbers on it , can they be made to fit under the standard bonnet without scoops?

Great seeing sombody starting a project like this, they are not easy, no matter how easy it looks in the magazines

good luck

[Owen]

I agree, this is going to be pretty mental if I know John. Could you take plenty of photos of the engine work John? It would be a real education to those of us interested in that sort of thing!

[oliver]

Best of luck John.

[bomber01]

[quote="Ciaran"]Nice project. Are these engines capable of reliably producing 160bhp?? what, gearbox are you planning to use? SCCR?? What are you going to do with the bonnet when you have 4 webbers on it , can they be made to fit under the standard bonnet without scoops?

Great seeing sombody starting a project like this, they are not easy, no matter how easy it looks in the magazines

As Ger said there has been a lot of reserch into this project therefore the answer is yes and yes ,as you see the progress you will realise this.
no bonnet mods required.
no webbers !!!!!/???
john

[bomber01]

The Head...
Now that the block is back from the workshop I have started on the
K-1100 head mods.

[IMG:320:240]http://i219.photobucket.com/albums/cc67/lancasterj/PHTO0041-1.jpg[/img]
[IMG:1024:768]http://i219.photobucket.com/albums/cc67/lancasterj/PHTO0043.jpg[/img]
[IMG:1024:768]http://i219.photobucket.com/albums/cc67/lancasterj/PHTO0043.jpg[/img]
[IMG:1024:768]http://i219.photobucket.com/albums/cc67/lancasterj/PHTO0045.jpg[/img]
[IMG:1024:768]http://i219.photobucket.com/albums/cc67/lancasterj/PHTO0044.jpg[/img]
this is the first mod the alloy fillet shaped and in place ready to weld.( see above )

[bomber01]

Below is is the fillet welded into the head..
[IMG:320:240]http://i219.photobucket.com/albums/cc67/lancasterj/Image016-1.jpg[/img]
Below is is the view from the head surface after skimming.
[IMG:320:240]http://i219.photobucket.com/albums/cc67/lancasterj/Image011-1.jpg[/img]
Below two 3/8 holes will be drilled and taped here for the oil return from the head to the sump.
[IMG:320:240]http://i219.photobucket.com/albums/cc67/lancasterj/Image012-2.jpg[/img]
It a slow process but it has to be 100% correct.


john

[firebirds_rock]

[font=Comic Sans MS]This should make a very fun car, whats the Mini like that this engine is going in? [/font]

[brian008]

best of luck with the project

will be watching with interest

[bomber01]

The silly season is holding me back a present , but should be back at the bench in Sept.









john