Graphs on some boring stuff 2v.

[TomTom]

Just finished mapping a slightly tuned DS1000 and thought I share the result.
The engine is bored to 1123cc, DP cams, one mm bigger inlets, hc pistons, stock diameter 2-1 and the heads taken care of by Erik Larsson in sweden.
It now lives in a sportclassic so a comparison with a hypermotard with the same DP cams and 2-1 will shed some light I beleive, they are similar in size, have similar airbox and similar exhaust. The hymo is also fully mapped out.

[chris steedman]

That is a big increase all across the board . Are there any more mods planned for this machine ?

[TomTom]

Dyno coming weekend with the usual long stacks that are cuttable, two versions, one set w no airbox and one set w airbox.
We do wide mouth stacks and the in box ones have to be cut some, that is the difference.
Let you know the result.

A pic from before dyno

To the bin you may think, hehe...

The bike is ohlins kitted front and rear, race fairing and bst cf rims, neat little thing.

[lechef]

Thats a lovely bike

Im the proud owner of the bike and i can tell you that its crazy fun to ride, like riding a moped with 1100cc engine.
The engine pulls soo hard.
The intake tryouts will be great fun to see if they give me any more.

Tom will be back with results later and il be back with the road test.

[phillc]

Can I jump in here?

Here's a graph of my 1000DS engine from earlier this year. Engine not-big bored. Head work done by Chris Steedman. Engine build by Neil Barrett at Cornerspeed in the UK. High compression pistons, standard exhaust headers.



And the bike (and me!) at the Anglesey circuit:

[lechef]

That are some good results.

The 1000ss seems to perform well, Tom did another 1000ds only porting and cams and ig got very good numbers.

It seems as the diffrent lenght intakes works well.

Its nice to see the stock headers working so well to, as said the 1000ds isnt that bad fromt he start.

My next step is to add 45mm spaghetti exhaust since i belive that the exhaust is chocking the bike as it has been so modiefied.
I allso have 50mm throttle bodies that i have built and im just gonna try theese just for fun, got them for 100 dollors of ebay and that is way cheaper then tpo beast etc.

[lechef]

This is the graph from last dyno session. We ran it in every diffrent config you can imagine.
Opposite to what it was the run without airbox with custom wide bellmouths that gave the best improvement.

It really seems as the airbox is chocking the bike and mostly i think it is due to the way to small intake hole. I had made an airfilter frame and fitted a larger but still half the size of 900 monster panelfilter and that didtn give it enoght air. it helped but still to small.
With the airbox of and no bellmouths at all it gave allmost same hp with 4 nm drop in torque.

My thoght is that the intakes are to long and the airbox is constrictive both to small and way to small intake hole.
Both will be fixed with the new Throttle bodies and custom airbox. I really dont think that the 50mm instead of 45mm intakes will boost hp big time, i think it more likly to loose some torque. but its all a test.

Here is the graph:

[Superlight]

And here's the movie.

YouTube Video