Can you turbocharge a two-stroke motor? [Archive]

stu

01-07-2004, 12:16 PM

I wonder because it seems to me that since there are ports instead of valves, that it'd be like having incredibly lopey N/A cams, and you'd just blow your a/f mix right out the other side every time. What do you guys think, or know?

HONDA GHANDI

01-07-2004, 12:18 PM

Yes, There are turboed and supercharged two stroke diesels.

stu

01-07-2004, 01:09 PM

But is there anything special you have to do to them? Or do they just run kind of shitty like a draw through carb set-up on a drag Beetle?

shane

01-07-2004, 03:33 PM

yeah they have turbo snowmobiles too.

HONDA GHANDI

01-07-2004, 03:50 PM

Well it depends on the way the motor is set up, If it has reed valves that do the breathing for it Im afraid the boost will blow past those. I think ithas to be designed for turbo, it jsut cant be added to any old two stroke.

Kwando

01-07-2004, 06:24 PM

damn it i want to turbo charge my go-ped too.

1998cc

01-07-2004, 07:12 PM

I thought you couldn't turbocharge a two-stroke engine. Since the fuel going into the engine also lubricates the crankshaft it has intake ports underneath the piston. The pressure would just be working against itself and the piston wouldn't move. The top side and bottom side of the piston are pressurized. How would you overcome this? Valves Maybe?

ryanman

01-07-2004, 07:58 PM

I have a 2 stroke Turbo snow machine.

Bedlam

01-07-2004, 09:36 PM

I have a 2 stroke Turbo snow machine.

Of course you do...who doesnt?!? :rolleyes:

-Bedlam

ryanman

01-07-2004, 09:40 PM

Of course you do...who doesnt?!? :rolleyes:

-Bedlam
Want me to post pics? I already posted pics about 2 months ago. Kiss my ass moron.

Bedlam

01-07-2004, 09:53 PM

Want me to post pics? I already posted pics about 2 months ago. Kiss my ass moron.

Pics that you get from some random site on the net...sure thing..that sounds great. I just get tired of the lies. How about you post some NEW ones..or maybe you sitting in your new boat? or in your cobra? on on the hood of that 6 second car you have...whatever.

-Bedlam

DrJones

01-07-2004, 10:16 PM

Stu- You can do anything you put your mind to. Never stop believing in yourself!

HONDA GHANDI

01-07-2004, 10:43 PM

http://howstuffworks.lycoszone.com/diesel-locomotive4.htm

http://science.howstuffworks.com/two-stroke2.htm

here is some heavy reading.

HONDA GHANDI

01-07-2004, 10:49 PM

Jsut had a thought by watching that video I posted, if you did away with the reed vavles the crankcase would always be pressurized if you had a supercharger on the intake side. It would also help the exhaust escape by forcing it out. Hmmm, a supercharged two stroke.

stu

01-07-2004, 11:16 PM

Good reading. I learned so much.

DrJones

01-07-2004, 11:20 PM

Good reading. I learned so much.

howstuffworks.com is great. I learned a lot about motors from there. (still hardly know anything though)

LeonZ

01-07-2004, 11:34 PM

yeah, howstuffworks is one cool site.

PS. Mike why are you randomly banning people for no reason. Big fucking deal, he posted about having a snowblower. How is banning improving his posts?

2genCRX

01-08-2004, 01:41 AM

because mike is on the admin power trip kinda how post tzarist russian went bad everyone wanted "tha pOwA!"

anyways i thought the same was as stu and 1998cc it would just be fighting its own compression

Bedlam

01-08-2004, 10:09 AM

yeah, howstuffworks is one cool site.

PS. Mike why are you randomly banning people for no reason. Big fucking deal, he posted about having a snowblower. How is banning improving his posts?

Its only temporary..and it was at the request of another user. Regardless, I'm just trying to keep the board as free of excessive B/S as possible..it was getting a little deep. However, if you have a problem with it..send me a message instead of posting more crap in this thread..I'll talk about it there.

-Bedlam

namnayr

01-08-2004, 11:29 AM

So where taking requests to ban people?????? NIIIICE, i'll send you a pm with a few people I want banned. Hey you did it for someone else why not me??

B18a1CRX

01-08-2004, 12:56 PM

Alot of problems with charging a 2 stroke motor come from the fact that you are also charging the crankcase as well. If you are familiar with how a two-stroke motor functions you will know that gas and oil are mixed together in the tank or somewhere before it reaches the cylinder.
See picturehttp://static.howstuffworks.com/gif/two-stroke-parts.gif
As you can see the gas/oil mix come in around the cylinder where the fuel is atomized and the oil flows to the bottom of the crank case to provide lubrication for the crankshaft. If you were to charge this sytem with a turbo or a supercharge you will not only be boosting the cumbustion chamber but the crank case as well and thats just not very good at high RPM's. Grnated there are some 2-strioke diesel motors but they are only spinning 1200-1700 rpms at max rev. Versus say a dit bike motor where it can be spinning anywhere from 8500-14000 rpm or like my go-ped which spins nearly 16000rpm. So yes and no.

stu

01-08-2004, 01:06 PM

Bedlam

01-08-2004, 01:10 PM

thats some excessive BS why dont you ban your self?

I guess some people have problems following instructions. Please keep your posts on-topic in here going forward.

-Bedlam

namnayr

01-08-2004, 01:11 PM

I guess some people have problems following instructions. Please keep your posts on-topic in here going forward.

-Bedlam
Ya you follow that also. Seems you are the one who started the veer to another topic.

ryanman

01-08-2004, 01:13 PM

Anyways back to the topic.

There are alot of people turbo-ing 2 strokes these days. I'll look around and try to find some links to some of them.

Bedlam

01-08-2004, 01:14 PM

Did you read Tobi's links? The diesel two-stroke is totally different (and better in my opinion) so you won't have that problem. Actually, thinking back to that thread, all diesel two-strokes MUST be super or turbocharged. I want one in a truck, that'd be bad ass.

The diesels are kind of a different story, but the pollution that these engines produce makes them pretty far from being "practical." I've been on some retarded fast 2 stroke powered toys..but I still dont like to see some watercraft I've been on leaving something similar to the Exxon Valdez behind it. :(

-Bedlam

stu

01-08-2004, 01:46 PM

The diesels don't pollute as much though.

HONDA GHANDI

01-08-2004, 08:24 PM

The biggest problem withthe big diesels is that its operating rev range is fro 900 RPM-1400 RPM. They also are considered not oil burning because they have a seperate crankcase from the oil/fuel mixture. I was pondering hte same thing that B18CRX posted is that when the case is pressurized it makes it harder for the piston to travel down because it has pressure on both sides. Thecombustion pressure is greater at the beginning but towards the end of the stroke it may be balanced out slowing it down. This will casue severe parasitic loss and be a detrement to HP gains. Im sure there is an easier solution tothis but I have yet to find a good write up on the principals.

Weston-work

01-08-2004, 10:16 PM

:werd:
so bedlam :fu:

Here's a silly idea... maybe you shouldn't use the "FU" icon on someone that can ban you. In the words of Red Foreman... "DUMBASS!"

2genCRX

01-09-2004, 05:59 PM

forum

01-09-2004, 06:02 PM

dude its an icon who ever gets up set ofver an internet icon should go stfu

also , i said this in the last thread to you when you tried to say something "smart"
so ill post it again

weston,stfu no one cares what you have to say
I would rather see posts by weston than posts by you. at least he posts something worth reading most of the time

Bedlam

01-09-2004, 06:29 PM

i guess what im trying to say is i get flamed if my post are relevent or not

Well..since you really seem to not like me, and don't have anything productive to say..why dont you take some time off! :) I had no part in changing your avatar..but it was pretty damn funny.

-Bedlam

ryanman

01-09-2004, 06:32 PM

OMG here we go with the useless banning again cause someone doesn't like someone.

Bedlam

01-09-2004, 06:41 PM

OMG here we go with the useless banning again cause someone doesn't like someone.

Did I say anything about banning anyone? I was just suggesting that maybe he needs to go play in another sandbox for a while..or perhaps count to 100 in a corner.

Maybe you should too. :cry:

-Bedlam

*edit* and for the record...I only consider banning people that..

1) threaten other members
2) do nothing positive or have nothing better to do than bash on other people
3) generally disrespect humankind in general - racists, sexist, hate mongers..
4) cant follow the FEW general rules we have for this forum

However..of the few people on the permaban list..-NONE- of them are from me.

Weston-work

01-09-2004, 06:42 PM

just STFU weston no one wants your input

I just think it's stupid to pick a fight with someone who's well respected and also a mod, especially over something that you weren't even involved in. Your first post in this thread was accusing Bedlam of being on a power trip, then you make a statement about his "excessive BS" and tell him to ban himself. I'm surprised he tolerated that, but he did, so then you thought it would be wise to use the "FU" icon on him. Sorry, but you aren't very smart.

ryanman

01-09-2004, 06:55 PM

Did I say anything about banning anyone? I was just suggesting that maybe he needs to go play in another sandbox for a while..or perhaps count to 100 in a corner.

Maybe you should too. :cry:

-Bedlam
:lol:

Bedlam

01-09-2004, 07:04 PM

I just think it's stupid to pick a fight with someone who's well respected and also a mod, especially over something that you weren't even involved in. Your first post in this thread was accusing Bedlam of being on a power trip, then you make a statement about his "excessive BS" and tell him to ban himself. I'm surprised he tolerated that, but he did, so then you thought it would be wise to use the "FU" icon on him. Sorry, but you aren't very smart.

Well...since we have officially whored up this thread anyway..thanks for the comments Weston..some people just dont get it I guess. Its easy to act like a "tough guy" over the internet. At least I get a good laugh out of it sometimes. :p

-Bedlam

stu

01-10-2004, 12:09 AM

Thanks for killing my thread fags. :(

exciv2000

01-10-2004, 12:21 AM

Thanks for killing my thread fags. :(

yeah, I like to grab female asses. Where's your GF stu, I could use a handful.

okay, that was lame :)

stu

01-10-2004, 12:29 AM

Haha, at least I recognized that you were trying to be funny instead of taking you seriously this time. And you weren't even ruining anything. Well, this time....;)

Bedlam

01-10-2004, 07:44 AM

Sorry stu!!! You can take away my birthday if you want...heh..

-Bedlam

travis sertic

02-02-2004, 12:44 PM

back to the turbo 2 stroke,it is not possible.i work on two stroke gasoline engines.i work on engines day in and day out .it will fight its own compression.and whare can you find a turbo that small?most two stroke engine s a 22cc-60cc.with a few exceptions

ryanman

02-02-2004, 01:02 PM

ricewizard

02-02-2004, 01:33 PM

heres a kawasaki drag bike 2-stroke/turbo.
http://www.kawasakitriplesworldwide.com/triples/gallery/turbo_polarias_dragbike/turbocharged_twostroke_polaris_motorcycle.htm

stu

02-02-2004, 02:41 PM

Finding a turbo that small is not the issue.

HONDA GHANDI

02-02-2004, 02:53 PM

most two stroke engine s a 22cc-60cc.with a few exceptions

*AH....AHHH......AAAHORSESHIT!*

Bless you. ;)

travis sertic

02-02-2004, 07:51 PM

bless you.dose the two stroke motor have valves?if so it is possible.with out valves the motor would fight its compression.i am almost positive.

ryanman

02-02-2004, 07:55 PM

A good reed valve works fine on mine.

travis sertic

02-02-2004, 07:59 PM

reed valve?

ryanman

02-02-2004, 08:01 PM

Almost all 2 strokes (minus diesels) have reed valves. You said you work on 2 strokes all day eh?

HONDA GHANDI

02-02-2004, 10:49 PM

reed valve?

BWAHAHAHAHAHAAHAHAHAHH

You gotta be kiddin me. You work on two strokes all day and you have never heard of a reed valve? Here, read THIS (http://science.howstuffworks.com/two-stroke1.htm) and then ask you boss for a raise tomorrow because you just doubled your knowledge of the two stroke. Then you can buy me a beer for getting you a raise.