i will be getting a Zbox motor for my bike shortly, and im thinking a turbo would be nice
http://www.zbox.com.au/large_engine.htm
I think the problems would be if the seals can cope with a few PSI, finding a turbo small enough for a 66cc motor.
Another issue is going to be oil supply for the turbo, but i can make something for that. i might be able to adapt up a charging circut from a motorbike, or just get a generator (old school on the wheel style) if i need an oil pump.
Really, im looking for people who have done a two-stroke turbo setup, or have some knowlage on the subject.
Where would i look for a turbo that small - i know they exist, i have seen photos.
Fast, Cheap, Reliable - Pick any two, and the third is laughable
wow diddnt know anyone else on this forum would have has one. i have a 2 stroke 80cc china motor on a 01 schwinn moab.
A good 80cc 2 stroke engine produces power in excess of 20hp. By the looks of it, that engine is very very very very.... chinese. Prety sure it wont last more than 3 seconds if you turbocharge it.
"Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car.
Horsepower is how fast you hit the wall, torque is how far you take the wall with you."
by some guy on the internet
How would boost affect a crank case compression 2 stroke?
Why not just get a 100cc?
12/71T GM diesel had 2 superchargers and 4 turbos, they are 2 stroke
cheers, Alan
1/4 mile-12.92 @ 108.64mph-NA 3.0L m3 daily driver
I think aerodyne used to make small sealed units that don't need lubrication, but they may have went out of business. I'm sure it wasn't small enough though. You may be barking up the wrong tree. Just look for another engine with more displacement/power. I know of a guy that adapted one to a 125cc motorcross bike. It was suppossed to be wicked.
GDM ENGINEERING
would the motor your looking to do this to have reed valves?? cause i think the boost would just push through that and it wouldnt run right.. and would the exhaust have to be "tuned" for the right back pressure and air flow? therefor a turbo wouldnt be able to do that, just my 2 cents
two strokes can be FI but not regular reed valve engines. it would have to be a Direct Port Injection Orbital Two Stroke. that is where the exhaust port closes before the fuel is injected into the engine.
Maddog
This is the smallest turbo known to me.
Mitsubishi TD02 series.
Don't forget you can pretty much cut the recomemnded CC's in 1/2 since 2 strokes push through twice as much air through them then the same sized 4 stroke engine would.
http://cgi.ebay.com.au/Turbocharger-...742.m153.l1262
Even still far too big for a 66 cc 2 stroke engine IMO.
Main problem for turbocharging gas powered 2 strokes is that their are not many fuel injection systems for the 2 stroke engines yet.
Orbital I think sofar is the only one, and is what is used on Evinrude\Johnson outboard boat engines.
Guy in Ontario managed to boost Polaris sleds but did this by expensivly re-jetting the carbs with extra passages to open up when on the boost.
Last edited by Jeffrie; 10-18-2008 at 01:53 PM.
My old roommate wants to turbo the Lambretta (sp?) motor that is bored/stroked, etc., that he's swapping into his Rukus.
its been done. hmt
nitro methanol, IE rc car fuel, will give your 2 stroke a power boost. be careful cuz you can melt down the piston, use ratio no more then 25/75.
you really dont want back pressure on a 2 stroke. a supercharger will work better.
Becoming a Professional OT Troll . CAN Bus Project: http://www.youtube.com/watch?v=2QuRBQzGs-c VGT/VNT +LDA controller: http://dmn.kuulalaakeri.org/vnt-lda/
Originally Posted by [B]SilverBeam[/B]Diesel > gasOriginally Posted by sparkchaser
still use intake ports, but have 4 valves/cylinder, all exhaust, still work in same way as any other 2 stroke except they are compression ignition instead of spark.
small petrol 2 stroke exhaust will not be hot enough to cause decent exhaust gas expansion to spool turbo very well
cheers, Alan
1/4 mile-12.92 @ 108.64mph-NA 3.0L m3 daily driver
You will have a hard time turbocharging anything much less than 500cc. You will have to take the supercharger route.
so i would be best off running nitro, and looking into getting some headwork and exhaust tuning done.
cheers for the help fellas, im tempted to get the 4 stroke, and bumping the compression up to about 10:1 - will let you know what happens.
Fast, Cheap, Reliable - Pick any two, and the third is laughable
I wouldn't buy that turbo with plastic impeller
There is the Mitsubishi T01, but impossible to find
about small turbos...
http://www.aktivematrix.com/forum/vi...ca8ae0e7bfb752
Your post suggested me some ideas about a motorized (FI ) dirt/mx bycicle...
Last edited by nuvola rossa; 10-19-2008 at 09:02 AM.
PROOF:
Turbocharged CR125.
apears to be internaly wastegated.
...although its just kinda chillin the the vacuum hose hangin out
with a draw through carb setup
and i know those motors, it DOES have reed valves
more pics in the link:
http://www.dirtrider.com/news/141_04...ike/index.html
Turboing a two stroke is alot of work.
you need to seal up the carb so it wont leak boost.
theres no oil pump so you would have to rig up
a mech or elec one.
HOWEVER....
there is the myth of using car smog pumps as superchargers...
in theory it could work on two stroke and your oil supply problem would be fixed... i once wanted to try it on my moped with the smog pump from an MG Midget. i think this summer i might attempt this again. also some RC car parts companies sell superchargers... but they look microscopic.
but hey, the snowmobile guys turbo frequently.
and if you can find an aerodyne one go for it.
i think the company went under, but good luck.
Last edited by XR000mb; 10-20-2008 at 11:03 PM.
i think you can just build a carb box - i read that somewhere that made it sound really simple. basicly incase the whole carb in a air tight box with a charge pipe to it. carb automaticly does its thing and thats it. i read somthing about a 1:1 fmu too i think..
http://www.blouchturbo.com/turbos/IHI_RHB3/
Still not sure that the exhaust flow would spool it - even if i weld the wastegate up airtight.
http://www.turbobygarrett.com/turbobyga ... 068__1.htm
That seems to big as well.
Perhaps a supercharger would be the way to go - i know they make them small enough for RC cars, perhaps there is something sized for what i need.
Anyone got any links to good RC sites, or something like that?
Fast, Cheap, Reliable - Pick any two, and the third is laughable
We have (2) aerodyne turbos on our 1000cc mountain sled . And we have (1)aerodyne on our 600cc drag sled. Aerodyne turbos are internally oiled and have adjustable vane technology. The company went out of business but there are a few people who rebuild them and sell. They make some psyco power and I won't ride the drag sled (I'm to slow for it) LOL ///J.T.?//
Lot's of new stuff hope it stays together a little longer. LOL
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