Stihl TURBO 084 from a different view

MG porting · Aug 22, 2019

Dub11 said:
Where's the 12 volt power supply gonna come from?

I wonder if the current oil pump could move enough oil to suffice the turbo then have it recirculate back to the bar to lube the bar?

He has a separate tank that's what is in front of the saw.

MG porting · Aug 22, 2019

srcarr52 said:
I'm guessing that extra tank on the front is for turbo oil.

Exactly.

MG porting · Aug 22, 2019

Mastermind said:
I can't see it working worth a damn. Just sayin.

It would but not for long and you have to spool it up pretty good to that's why he used the 084 anything smaller wouldn't run very well at all .

Dub11 · Aug 22, 2019

srcarr52 said:
I'm guessing that extra tank on the front is for turbo oil.

Evansaw said:
You are 100% correct
That’s exactly what it is

MG porting said:
He has a separate tank that's what is in front of the saw.

But what about a power source for the pump?

Dub11 · Aug 22, 2019

Mastermind said:
I can't see it working worth a damn. Just sayin.

I envision that intake boot swelling up like a balloon.

LOMartin · Aug 22, 2019

Dub11 said:
But what about a power source for the pump?

Wouldn’t those thin batteries to jump a car work? I even jumped my super duty with those tiny things.

It would only need to run for 30seconds max?....before the saw blows up. lol

MG porting · Aug 22, 2019

Dub11 said:
But what about a power source for the pump?

Lipo pack would work.

MG porting · Aug 22, 2019

Dub11 said:
I envision that intake boot swelling up like a balloon.

That will happen but also depends on how much boost is being produced also.

qurotro · Aug 22, 2019

Hmmmm... The booost won't leak out from blowdown?

Mastermind · Aug 22, 2019

Dub11 said:
I envision that intake boot swelling up like a balloon.

It would just blow thru the engine without valves.

Mastermind · Aug 22, 2019

qurotro said:
Hmmmm... The booost won't leak out from blowdown?

Exactly

Absolution · Aug 22, 2019

Even then you can get braided silicon tubing. My truck would do about 55psi on stock couplers. It woudnt be that hard either to cover where the boot is into a flang and make it solid.

srcarr52 · Aug 22, 2019

Dub11 said:
I envision that intake boot swelling up like a balloon.

You'd probably have to put a band around the main bellows part but it would be fine.

I hope they realize they need to boost reference the carb for the blow through setup like that or they'll just blow the diaphragm out of the carb. You should also have a rising rate fuel pressure regulator but for something that always runs WOT you can probably get away with boost referencing the carb and pressurizing the tank.

Turbo'd 2-strokes rock, I miss my turbo snowmobile. 800cc, 7psi making 200hp at 10k' on pump gas.

Mastermind · Aug 22, 2019

srcarr52 said:
Turbo'd 2-strokes rock

I really didn't think boost on a two stroke would work for *s-word. Color me surprised.

Absolution · Aug 22, 2019

Mastermind said:
I really didn't think boost on a two stroke would work for *s-word. Color me surprised.

More air is alway better =D

Edit: one of my previous posts went though it. If the saw of similar build and they had the same compression they would be the same except for the top end. Just don't expect the same. Improvement that a 4 stroke will have.
There is some more wear on the turbo and. I bet the impeller and shaft for that snow mobile and jet skis are built rather strong. You see a lot more supercharged two strokes then you do turbocharged.

srcarr52 · Aug 22, 2019

Mastermind said:
I really didn't think boost on a two stroke would work for *s-word. Color me surprised.

Completely stock motor with an Aerocharger 66 with an air to water intercooler. These are crankcase fed, reed valve motors so the pipe and back pressure from the turbo help keep from wasting too much out the exhaust. With piston porting you get to control the volume with the intake duration.

srcarr52 · Aug 22, 2019

Absolution said:
More air is alway better =D

Edit: one of my previous posts went though it. If the saw of similar build and they had the same compression they would be the same except for the top end. Just don't expect the same. Improvement that a 4 stroke will have.
There is some more wear on the turbo and. I bet the impeller and shaft for that snow mobile and jet skis are built rather strong. You see a lot more supercharged two strokes then you do turbocharged.

There is a lot more aftermarket turbo charged 2-stroke snowmobiles than super charged. Only one company makes a supercharger kit based on a vortec centrifugal.

Duke Thieroff · Aug 22, 2019

srcarr52 said:
Completely stock motor with an Aerocharger 66 with an air to water intercooler. These are crankcase fed, reed valve motors so the pipe and back pressure from the turbo help keep from wasting too much out the exhaust. With piston porting you get to control the volume with the intake duration.

View attachment 196019

Where are you riding that at?

Not too many hills in Iowa outside of the Loess that I ever noticed....

srcarr52 · Aug 22, 2019

Duke Thieroff said:
Where are you riding that at?

Not too many hills in Iowa outside of the Loess that I ever noticed....

That was near Togwotee WY.

Iowa has the Bohemian Alps!

Evansaw · Aug 22, 2019

Mastermind said:
I really didn't think boost on a two stroke would work for *s-word. Color me surprised.

Only info I could get was that saw was built 20-25years ago...

Stihl TURBO 084 from a different view

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