100% acetone in sv650 curvy?

edit: Just seen Embee's post, sorry lol

Originally Posted by Joe Marcon

Its same as petrol as corrosive .

Actually they have wildly different properies - plenty of common plastics (apart from fluoropolymers like viton / teflon and polyalkenes like PP / PE / PMP) will be either swelled or dissolved by acetone. I don't know what suzuki used on the SV but nitrile rubber is a very common fuel-safe polymer and acetone (and methanol, and many other solvents) will eat it for breakfast. If you've already put it through your tank I'd get it out sharpish. Not to mention it will definitely chew up your fairings and probably the paintwork too!

Check out this solvent compatibility chart... (petrol is similar in composition to petroleum ether)

Originally Posted by Joe Marcon

Well not gunna lie it runs smoother . Pulls abit better . But only using for this one tank .

Bum Dyno

Originally Posted by Joe Marcon

A guy got a normal engine and an engine that had used acetone . He cut them in half and the acetone engine was much cleaner and better all rounder

Was this the guy down the pub ? , look , if this was some wonder cure for MPG etc .... EVERYONE would be doing it , there is NOTHING NEW UNDER THE SUN

[Sid Squid]

Originally Posted by yorkie_chris

petrol flash point at -43 degrees. I don't think I'd fancy riding in that TBH.

Nancy.

Lol

Back of the envelope calculation gives the AFR for acetone as 7.9:1, AFR for petrol is around 14:1 so running acetone with standard jetting / map will give you a very lean running engine. Rejetting / remapping to get the right AFR will give you 30% more power and 30% less tank range for a given displacement. (Acetone 24.3MJ/l, Petrol 32.8MJ/l).

Of course if you go for nitromethane / methanol like the dragsters use then your AFR is something like 2:1 (tank range would be around 15 miles) and power goes up but many hundred percent!!! Lol, nitro powered SV anyone?

[yorkie_chris]

Originally Posted by 85jas

Back of the envelope calculation gives the AFR for acetone as 7.9:1, AFR for petrol is around 14:1 so running acetone with standard jetting / map will give you a very lean running engine. Rejetting / remapping to get the right AFR will give you 30% more power and 30% less tank range for a given displacement. (Acetone 24.3MJ/l, Petrol 32.8MJ/l).

No it won't.
You're still burning the same amount of air at the same compression ratio, how do you get 30% more power?

Originally Posted by yorkie_chris

No it won't.
You're still burning the same amount of air at the same compression ratio, how do you get 30% more power?

Acetone will require 6.9kg air / kg fuel whereas petrol needs 14kg / kg fuel; halving the AFR gives you twice the mass of fuel in per burn; if the fuel had the same calorific value then you could get twice the power but as acetone has a lower calorific value and a lower density you only get 30% extra energy per burn...

Of course I may be talking out of my a*se, it has been known! But I'm sure that's right, isn't that how dragsters get so much power out of nitro mix? Low AFR and loads of fuel, albeit at a lower calorific value..

[embee]

My Bosch handbook says (from earlier post)
Acetone calorific value, 28.5MJ/kg compared to 43MJ/kg for petrol, and the stoichiometric ratio is 9.4:1 compared to 14.7:1

Stoich ratios are for mass not volume.

1kg of air will release 28.5/9.4= 3.03MJ from acetone
1kg of air will release 43/14.7= 2.93MJ from petrol
so not a lot in it if running more or less correct A/F (3%).

Originally Posted by embee

My Bosch handbook says (from earlier post)
Acetone calorific value, 28.5MJ/kg compared to 43MJ/kg for petrol, and the stoichiometric ratio is 9.4:1 compared to 14.7:1

Stoich ratios are for mass not volume.

1kg of air will release 28.5/9.4= 3.03MJ from acetone
1kg of air will release 43/14.7= 2.93MJ from petrol
so not a lot in it if running more or less correct A/F (3%).

I see, I've conjured up the wrong numbers