Very technical question

[luca]

Hi all,

Just been thinking over the weekend about the proposed upgrades to my hyper. This may sound a daft question and I am sure someone will of asked it before of the very technical minded among us. But here goes anyway and dont laugh out loud, is it possible to fit 4 valve cylinders and heads off any of the larger capacity water cooled Duc engines onto the bottom end crankcases of the air cooled 1100 moter. I was looking at various old forum subjects earlier and noticed someone had shoe horned a 1098 moter into a hyper.
If it were possible to mate the air cooled bottem end to a water cooled top end this would la sure you would agree be an awesome winter project.


Your thoughts please as ever greatfully recieived ???????

[08hyper]

Originally Posted by luca

Hi all,

Just been thinking over the weekend about the proposed upgrades to my hyper. This may sound a daft question and I am sure someone will of asked it before of the very technical minded among us. But here goes anyway and dont laugh out loud, is it possible to fit 4 valve cylinders and heads off any of the larger capacity water cooled Duc engines onto the bottom end crankcases of the air cooled 1100 moter. I was looking at various old forum subjects earlier and noticed someone had shoe horned a 1098 moter into a hyper.
If it were possible to mate the air cooled bottem end to a water cooled top end this would la sure you would agree be an awesome winter project.


Your thoughts please as ever greatfully recieived ???????

It can be done, and may even perform well, but would a "TON" of work, lots of machining, custom made pistons, gaskets, cams, belts, reshapeing combustion chambers to work at the lower RPM ranges, etc,etc,etc.
The main problem IMHO would be the heat, the Desmo 2 valve train already runs HOT, and the 4 valve runs hotter, so Ducati water cools it. Other than the "TON" of work required, it may just run too hot. IMHO. Aloha Alex

[luca]

Hi Alex,

I was thinking the engine would be water cooled if the conversion were possible, so would assume that the extra heat would be taken care of with the addition of a radiator, may spoil the simple lines of the hyper but food for thought. Would be very interesting to know how far out the mated crankcases and the water cooled cylinders would be out of sinc as standard before any machining.
You would be looking at a very pokey package me thinks, lots of fun.
Alternativly maybe on retrospect it would be better to fit a complete moter or just leave well alone and improve the air cooled lump as best you can.
Just a thought to provoke debate on the forum.
Cheers Luca

[DonG]

Why would you want to do that? you would loose that great thing about our bikes that wonderful bottom & mid range shunt!

Nope the hyper has the right engine from the factory to my mind - just needs a little breathing on too bring out the best in it.

[disgo duc]

by the way luca..that was a 1098 motor in a 1098 frame modified to look like hyper.but im sure it can be done either way.

[luca]

Hi Disgo,

Didnt realise it was a 1098 modified frame, thought it was a 1098 moter in a hyper frame. l was thinking of the 999/1098 moter in hyper frame, But as DonG suggests dont really want to loose the Tooourqe.

[Gilles]

Originally Posted by luca

Hi all,

Just been thinking over the weekend about the proposed upgrades to my hyper. This may sound a daft question and I am sure someone will of asked it before of the very technical minded among us. But here goes anyway and dont laugh out loud, is it possible to fit 4 valve cylinders and heads off any of the larger capacity water cooled Duc engines onto the bottom end crankcases of the air cooled 1100 moter. I was looking at various old forum subjects earlier and noticed someone had shoe horned a 1098 moter into a hyper.
If it were possible to mate the air cooled bottem end to a water cooled top end this would la sure you would agree be an awesome winter project.


Your thoughts please as ever greatfully recieived ???????

As requested here's my 2c.

If it were me, the time, effort, cost would be better spent on boring and stroking, titanium parts (rod, crank, cam gears, etc,), and lightening (e.g. BST wheels, LiFo battery, etc).

Unless your interest is in achieving the impractical (and near impossible), why not do it the more sure and economic way?

[freezer16801]

send your motor to ducshop for the works or buy alex' motor of death II and you will figure out real quick that there is not much more HP that you could handle in a bike like ours.

[Chouch]

Originally Posted by luca

Hi Disgo,

Didnt realise it was a 1098 modified frame, thought it was a 1098 moter in a hyper frame. l was thinking of the 999/1098 moter in hyper frame, But as DonG suggests dont really want to loose the Tooourqe.

Both were done.

Krisfox document his work on the French Hypermotard forum, from an accidented 1098 to what is often mistaken as a Hypermotard with a 1098 engine.

2 members of the Italian went the other way. Both documented their work on the Italian Hypermotard forum. One of them even did a flash website for his project.
1 started from an Old Multistrada and fitted a 1098 engine with some insanly gorgeous headers.
1 started from a Hypermotard and fitted a 999 engine.

[johnnymotocros]

You got the wrong bike !!!