turbo ?'s

[bzerk]

what kind of turbo can you put on a tri-z 250

[Billy Golightly]

This is a really complicated subject. If your serious about it, do a search on amazon.com for "motorcycle turbo" and buy corky bell book and the other one thats got the drag bike on the front. You'll need to learn and read a lot.

[SCEADU]

Can a 2-stroke have a turbo? I know that detroit makes a 2 stroke diesel but I thought they had to be super charged becuse the turbo would mess with the way a 2 stroke operates. Learn sumtin new everyday.

[300rman]

yeah, this isnt something commonly done. and i cant see this helping much in a 2 stroke because of how they run. the pressure shot into the crankcase would be pressure the piston has to overcome to come down, and the extra pressure on the reeds could be bad, and since the intake port closes before the exhaust port, i dont see how the turbo could further pressurize the combustion chamber anyway, as all the extra pressure will rush out the exhaust port before the port closes.

feel free to chime in and correct me if im wrong?

seems like it would be cheaper for you to pre-order a tri-Z 330 kit,
can be pre-ordered here http://www.planettrike.com/showthread.php?t=357

one run of these has already been made, and they have proven to be reliable and POWERFUL. ill bet with a good port job, reeds, bigger carb it would be all the power you would ever need.

[bzerk]

i already have the 330 kit

[Billy Golightly]

They can be built and put on 2 strokes. Theres a metric *Edited**Edited**Edited**Edited*-ton of tuning variables though, and you have to select the right type of turbo, the right type of plumbing (blow through, draw through styles just for a beginning example). You need to learn how to read compressor maps as the very first step so that you get a turbo the right size and out put. Decide whether you want to use a common oil float type where you have to build an auxillary oil tank and oil pressure pump/system or try and locate a self lubricating one (extremely hard to find, extremely expensive) I've done hundreds of hours of research on the subject and could more then likely build a functioning setup if i had the time and money to do it...but only because I'm a pretty good fab guy and that I have spent so much time and effort looking into it. Don't even attempt it or try it until you've done enough research to have the entire thing planned from start to finish with every single part necessary listed and every probable issue sorted and solved.

[Daddio]

Can a 2-stroke have a turbo? I know that detroit makes a 2 stroke diesel but I thought they had to be super charged becuse the turbo would mess with the way a 2 stroke operates. Learn sumtin new everyday.

I spent four years operating a Terex TS24b Scraper and it was powered by two Detroit diesels. It had a V12 in the front and a V6 in the rear. They had turbochargers feeding the superchargers. Hard core stuff there buddy.
Here is a link to one with some cool pictures.
http://www.machinerytrader.com/listi...x?ohid=6054124

[SCEADU]

I ran a Michigan B75 with the above said 2 stroke diesel for a few years and I remember the first day on the thing . The boss comes up to me and says "Son you gotta run it like you stole it". When the engine went down I helped to rebuild it but everything on it was Greek to me. Just did what he told me to do. When I asked where the turbo was I thought he said that 2 strokes are blown not turbo. Could be wrong though that was 20 years back.

[bzerk]

do you think it will add much hp

[300rman]

They can be built and put on 2 strokes.

i can see where most of the tunign would come into play, and all that fun stuff. but explain to me this.

How can the combustion chamber become further pressurized when the exhaust port is open longer than the intake port? how does the air not simply blow through the cylinder into the pipe? i mean, obviously ALL of it wont, but i cant see more than a 2-3 PSI boost MAX no matter how hard you crank the turbo.

seems to me a 2mm greater stroke, with a higher compression domed head would be cheaper and just as, if not more, effective.

i already have the 330 kit

than get it ported by a reputable company. PR Racing does excellent work, and they have made many monster engines in their day.
higher compression could also be another route?
Vforce reeds?

i imagine you also have the aftermarket intake that Sprock Racing makes, and the other goodies he has available.

[sbjones73]

one of my older friends still drags a snowmobile that is 2 stroke that is turbo'd. he says it was a pain to get it "right" but man that thing rips like you wouldn't believe.

and for a note here. detroit made several 2 stroke engines that were turbo charged. like the 71 series engine, they were turbo's. then came the 92 series that ran turbo's and blowers ( i am really only talking 6v and 8v engine here, no four cylinders or v12's)

[Billy Golightly]

i can see where most of the tunign would come into play, and all that fun stuff. but explain to me this.

How can the combustion chamber become further pressurized when the exhaust port is open longer than the intake port? how does the air not simply blow through the cylinder into the pipe? i mean, obviously ALL of it wont, but i cant see more than a 2-3 PSI boost MAX no matter how hard you crank the turbo.

seems to me a 2mm greater stroke, with a higher compression domed head would be cheaper and just as, if not more, effective.




than get it ported by a reputable company. PR Racing does excellent work, and they have made many monster engines in their day.
higher compression could also be another route?
Vforce reeds?

i imagine you also have the aftermarket intake that Sprock Racing makes, and the other goodies he has available.

I don't have enough time (headed to work in like 5 min) to explain it really in depthly, but more or less the turbo goes after the pipe, and then the pipe harmonics and pressure waves still work as they did before. Hell you get +/- 7psi pressure changes in a good expansion chamber just with a normally aspirated engine. And the cylinder never actually starts to pressurize on the up stroke until the exhaust port is closed anyways.

The turbo if its dialed in and has an efficient compressor ratio that matches the engine will do like 45-50% gain depending on the boost pressure, I think those percentages would be based on an 8-10psi # which is probably about all your going to get with the engines we're talking about before you have to get really creative with the crank seals. So if you've got a 60hp motor your looking at 90 or close to it.

[fabiodriven]

one of my older friends still drags a snowmobile that is 2 stroke that is turbo'd. he says it was a pain to get it "right" but man that thing rips like you wouldn't believe.

and for a note here. detroit made several 2 stroke engines that were turbo charged. like the 71 series engine, they were turbo's. then came the 92 series that ran turbo's and blowers ( i am really only talking 6v and 8v engine here, no four cylinders or v12's)

As for the 3-53 and 4-53 Deroits- I had a 3-53 with just a blower, I think that's the only way they came. But the 4-53 you could get with a blower and a turbo, or just a blower.

[cheaptecate]

Two stroke diesels are not like two stroke gas motors. The diesels still have valves on the exhaust. Only the intake side of the motor is like a gas two stroke. This may be why the two stroke diesel works so well with the turbo. A diesel, 4 stroke of 2, is usually a dog without some boost.

[Daddio]

Two stroke diesels are not like two stroke gas motors. The diesels still have valves on the exhaust. Only the intake side of the motor is like a gas two stroke. This may be why the two stroke diesel works so well with the turbo. A diesel, 4 stroke of 2, is usually a dog without some boost.

Actually I believe that they,2stroke diesels, have to have some kind of boost in order to run properly. Check link below. I think we are really getting off topic here.
http://auto.howstuffworks.com/diesel-two-stroke1.htm