cant you only supercharge 2 strokes because they dont put out enough backpressure for the turbo? ive seen them blown with a custom drive for the blower. wouldnt you also need intence reeds for the higher pressure?
turbo charged blaster...
- Thread starter 4cfed
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idk about blowing thru a carb...... i would think with the higher pressure it wouldn't allow the gas to come up thru the main jet, might just blow intake into the bowl.... so you would have to put a port to pressurize the bowl, or run a fuel pump to pressurize it. but then again maybe i'm just dumb.
not, turbos dont need back pressure, so to say, its your exhaust flow that that spins the turbo to create boost,and if you look at the vids i posted in this thread.. all are two stroke turbos... got some details to figure out in my head and onlin eyet, mainly im hoping vf3s will handle the pressure,
ok.. i was thinking of trying it with a set of cheaper reeds like boysen or vito's carbons just to see what happens.. id rather replace them once or twice than vf3s
lol...... after the car is done.. ill be looking for a cheap blaster do try this on,, since mines is to nice and to reliable lol
sh*t someone said backpressure and you know when someone says something its in your head and u say it? yeah i ment exhaust pressure/flow.
and about fuel issue... FUEL INJECTION!
lol that would be sick, but crazy to do a custom design.
the thought if fuel injection crossed my mind... could do it two ways since carb would need to be pressurized to work properly.. use carbs fuel for idle and no boost, than have acold start injector from a saab or toyota to come in with a throttle switch and pressure switch, when it hits 1 psi of boost or set level the injector will turn on and take over the fuel end of it
naaa... there is a way to do it.. use the cold start injectors on turbo dodges to add extra fuel, just runs off a hobbs pressure switch to open the injector when it sees a set boost level..
and as far as gettin neough flow.. there are turbos that you can put on lawn mowers that will make boost and that low of air volume....
like i said im stil lresearching how to go about it
and as far as gettin neough flow.. there are turbos that you can put on lawn mowers that will make boost and that low of air volume....
like i said im stil lresearching how to go about it
You will have to go blow thru, and would be best to mount after the pipe. You need the float bowl preasure and preasure above the slide to be the same as intake preasure. There are two ways of going about this.1) Make a turbo accumulator behind the carb and run boost lines from this to the carb cap and upper float bowl. 2) completely enclose the carb in the boost accumulator box so the whole carb is under pressure. As far as the reeds, that is the tricky part. Your best bet would be to convert your cylinder to a piston port style rather than reed valves. This would be done by replacing the sleeve with one that will allow you less intake duration and running a piston without windows so the piston controls the intake charge. Reeds have a tendency to remain in the open position the entire time they are under boost. One person who may be able to give you more input on turbocharging it is Dan Hull at A&S racing engines, he has been the most successful with turbo banshee's. As far as your theoree on the Detroit diesels, they are completely different than the blaster as far as intake and exhaust design. They are a piston port, but have four overhead exhuast valves and camshafts to run them.
I don't see why you couldn't just do a draw through setup In this situation. Your not planning on running a intercooler are you? The main reason people have problems with draw through systems is the fuel condensates in the intercooler and the plumbing. With such a small space to work with you wont have room for it to condensate. You may have more trouble working out a BOV and a waste gate. I highly suggest reading the book Maximum boost by Corkey Bell. It is an old book but the basics are there and it gives some very good tips. Although there is no info about 2-strokes it could still help you out a lot.
Like wildcard said if you are really going to do this or atleast are thinking about it get rid of the reeds and use a simple piston/port system just like a chainsaw uses. Like someone said before use fuel injection,what you can do is set it up so that it works like Mercury marine's DFI (Direct Fuel Injection) powerheads. How they work is they have an oil pump that is always pumping oil to the bottom end and a fuel injector dead center of the cylinder head. This would be well beyond a s*it ton of work but it would turn heads and have a 4 star California emission rating =)
thanks for the input guys.. much apreciated.. not gonna run a blow off valve, and if i can do a small enough turbo thas interneally gated, that would work best to not have that extra piping for a external gate, i know this can be done.. like isaid right now im in the research part since funds wont allow starting this project yet.. gettin married in june, and have aolds to build before then, after the wedding ill be buying another blaster to work on.. perfer one with a blown motor so i can make the correct changes to the motor for this to work..
I know it wont be fast, but with a good carb and pipe.. it will be double the kick when it gets on the pipe, optimal set up for the fun factor would be turbo to hit full boost at the same time it gets on the 'pipe' got that ''hit'' we all love
I know it wont be fast, but with a good carb and pipe.. it will be double the kick when it gets on the pipe, optimal set up for the fun factor would be turbo to hit full boost at the same time it gets on the 'pipe' got that ''hit'' we all love
only way i could c it working is if u spool the turbo off of something else instead of the exhaust. like the moving chain or something. but then it wouldnt be a turbo it'd be a supercharger. ive only seen a turbo on a 2stroke b4 and that was a leaf blower. they used the outward air to spool the turbo. 2 strokes dont have that needed exhaust flow to spool a turbo. and idk about the gaskets. u might want a stronger piston to cope with the extra compression. good luck to u.
idk if a turbo would work at lower RPMS, when the reeds are actually opening and closing, but when you get up to high RPMS the reeds are basically open all the time, the land speed record for a CR125 dirtbike or whatever had a turbo on it, nut it wasnt run by exhaust, it was run by electric and it only operated at a certain RPMS level, check out the article, i dont feel like looking for it
I'd try a drawthru setup as well. Off road guys use them alot on buggys and stuff. That way you dont have to search the world findin the right emultion tube for your carburator thats setup for a blowthru turbo(I doubt one even exists for a blaster carb) Also u need a turbo with a carbon seal for drawthru application. Exhaust pressure/heat shouldnt be a problem turbos run off of heat heat=pressure, pressure=heat, and turbos produce alot of heat.
good luck.
good luck.
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