Has anyone ever dynoed a 2 stroke turbo?

[Longhairfreak]

Have heard alot of claims for horsepower but not once have I ever seen a dyno sheet to back these claims up.

 

[teeroy]

never seen a dyno sheet for one either, but have ridden a few. seat of the pants says the ones I've ridden go pretty good compared to my stock XP. not as much HP as a boosted yammie, but the lightweight feel made up for any perceived lack of ponies....BDF900's T-M1 was very impressive.

 

[Longhairfreak]

never seen a dyno sheet for one either, but have ridden a few. seat of the pants says the ones I've ridden go pretty good compared to my stock XP. not as much HP as a boosted yammie, but the lightweight feel made up for any perceived lack of ponies....BDF900's T-M1 was very impressive.

The fastest sled ive ever seen go up a hill was a T-M1.

 

[koby]

The fastest sled ive ever seen go up a hill was a T-M1.

What sled video was that in?







.

 

[buck50]

What sled video was that in?







.

when can we get said video on the reserve????? does it come in beta or VHS???????

 

[scrfce]

when can we get said video on the reserve????? does it come in beta or VHS???????

It was actually laser disc

 

[Modman]

Have heard alot of claims for horsepower but not once have I ever seen a dyno sheet to back these claims up.

why do u care?

99% of people don't know what they are looking at on a dyno sheet anyway. Too many people think HP means something. HP is the last thing you should be concerned with (unless it's cumulative values). Most people don't want to dyno it because they are scared they'll find out that it doesn't make as much as they told everyone it does.

So let them make all the claims they want with info they've pulled from the turbo manufacturers website, the hill is where it matters.

 

[Longhairfreak]

why do u care?

99% of people don't know what they are looking at on a dyno sheet anyway. Too many people think HP means something. HP is the last thing you should be concerned with (unless it's cumulative values). Most people don't want to dyno it because they are scared they'll find out that it doesn't make as much as they told everyone it does.

So let them make all the claims they want with info they've pulled from the turbo manufacturers website, the hill is where it matters.

Actually I was more concerned about torque because thats what moves you. I agree though the proof is on the hill.

 

[magnet]

The fastest sled ive ever seen go up a hill was a T-M1.[/QUOT
i bet mine could come down faster

 

[buck50]

It was actually laser disc

shweet, dose are awsum!!!!!!!!!!

 

[koby]

It was actually laser disc

you mean like a really laser
should mount laser's on the front of the wedgeskittle and blast those pesky hills out of the way. that would save on wasting paper and ink, printing them there 2 stroke dyno sheets.

I love technowledgy :d

 

[maxwell]

my buddies tm1200 makes 850hp and 700ftlbs torque...similar to an enginetech 1160

 

[bigdawg]

my buddies tm1200 makes 850hp and 700ftlbs torque...similar to an enginetech 1160

now thats funny right there........again a agree with acouple other peeps......its what happens on the hill.......u can have 1000 hp but if you cant get it to the ground what good is it........theres alot to be said on clutching gearing and rear skid set up than......o mine makes 18000 hp how about u.

 

[Bogger]

now thats funny right there........again a agree with acouple other peeps......its what happens on the hill.......u can have 1000 hp but if you cant get it to the ground what good is it........theres alot to be said on clutching gearing and rear skid set up than......o mine makes 18000 hp how about u.

I guess if Cale's riding b1tch you need 18K hp...........

 

[jaredszakacs]

now thats funny right there........again a agree with acouple other peeps......its what happens on the hill.......u can have 1000 hp but if you cant get it to the ground what good is it........theres alot to be said on clutching gearing and rear skid set up than......o mine makes 18000 hp how about u.

exactly you can have as much hp and torque but if your clutching isnt good then you only hava as much as that stock chit can take. diesels are the same you cant have big hp and torque numbers witout a properly setup sled and yeah a dyno does not compare to the hill it only gives you a rough estimate the hill is the proving grounds. just dynoed mine guy told me i'm well into the quadruple digits with it.... at that moment i pissed the bed and woke up

 

[Modman]

Actually I was more concerned about torque because thats what moves you. I agree though the proof is on the hill.

I hear ya, to me though, on the dyno sheets it ain't really even about the torque at first either until I look at a few other things first.

The first thing I look at before anything is the BSFC values because anything down into the mid-5's and below is getting too lean IMO for the average running mountain sled. If the values seem reasonable then I'll start looking at power curves (where it makes the torque and for how long, etc) and a lot of other information. If the BSFC values are unreasonable, there's no point in going further because the motor will not make the same power in an "average rider" sled, since the BSFC values will be higher and therefore the motor will be making less power.

Often times you will see this where someone is selling engine mods and they are claiming big HP #'s, but the dyno sheets included show a BSFC value in the sub 0.55 range at peak torque. Sure it looks good to most peeps on the dyno sheet who are just looking at peak HP, but what they fail to realize is that BSFC value is too lean for everyday, all day wide open running (like the mountains ) The builder will then supply a more conservative jetting recommendation for the "average rider" who installs the product, which will raise the BSFC value, but the motor will not make the same HP day to day, however the consumer thinks they are getting what is on the dyno sheet.

This is how Ski Doo, Arctic Cat etc typically generate their power #'s every year. They dyno a pre-production sled, then slap a single # in the magazine ad and guys get all worked up and start threads about how much HP Polaris/Yamaha/Ski Doo 's, etc 800 is making this year and how it's going to smoke everyone else.....but in reality the manufacturer made that HP # with BSFC values in the 0.45 range and the actual production sleds come with values closer to 0.6 and are making less HP, which is why the #'s any of them post in magazines do not matter. Great for hype to show how much it "can" make, but mis-leading to most people. I don't accept dyno results as credible from any engine builder or aftermarket manufacturer unless it is complete with all the information.

 

[jaredszakacs]

every manufacture out there overrates there power it is just nature why do they do this well because it sells there product obviously most people are out there worrying about how much hp it makes stock but they dont take the main contributing factors into play you need proper clutching,proper,fuel,proper air lots of different things. people are getting to worked up about these stock numbers prime example in 06 my m7 was rated at 145 hp and would easily keep up with a few buddys 05 revs that were supposedly 151 hp. what i'm getting at is hp and torque numbers really dont matter to much unless the thing is properly built to handle that power. rite now we have entered back into horsepower and torque wars we are seeing it with the diesels and now again with the sleds to me big hp that only lasts a few days doesnt get me all excited it is the ability for that machine to continually perform time after time that i worry about.

 

[glengine]

I have seen a few turbo 2 strokes dyno'd. They were done on neils dyno in edmonton. The thing i like about neil is he will tell you that he can make the dyno sheet read whatever you want but he gives you a sheet that has realistic everyday numbers on them. But just like others have said you can make all the power in the world but if you can't transfer it efficently to the ground then it's not important hoe much you make.

 

[Longhairfreak]

my buddies tm1200 makes 850hp and 700ftlbs torque...similar to an enginetech 1160

Actually if I was a bettin guy 1160s might make 200hp on a good day.

 

[maxwell]

Actually if I was a bettin guy 1160s might make 200hp on a good day.

neat. so is my 827 with nitrous. want to race? uphill that is. she tops out at about 140km on the flats LOL