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787 supercharger?

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Luvme4thamoney03

Luvme4thamoney03

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has anyone ever looked into taking the 185horse supercharger off the gtx 4tech and putting in on a 787, it runs off the crank right? should be that difficult to get it hooked up, i would imagine the tuning would be the hard part, some homemade aluminum ducting, im sure it would be a recipe for disaster, i would defently try it if i had one laying around
 
Nope, will not work on a 2-stroke. They work on different principals than a 4 stroke.
 
sometimes good ideas end up badly,
like last year,

I was going to cross a wiener dog with a cat to make a wiener cat, all I ended up with was a dead cat and a scratched up wiener dog.
 
Lol...Spim... having a hard time typing...

Anyway, money you might be interested in reading about 2 strokes and tuned pipe theory, I think you will find they work to charge(compress) the mixture just from the exhaust end as apposed to the intake. Advantage no moving parts! Disadvantage power can be a dog(weiner) until it comes on the pipe (in tune).
Seadoo tweaks the tuning with the RAVES and water regulator on the 787 and 951. We gain broader power band but suffer moving parts...

Sent from my SCH-I605 using Tapatalk 2
 
Spimothy Leary said:
sometimes good ideas end up badly,
like last year,

I was going to cross a wiener dog with a cat to make a wiener cat, all I ended up with was a dead cat and a scratched up wiener dog.
Click to expand...

:lol: I'm glad I wasn't taking a drink when I read that, it would have bee all over the computer lol
 
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Forced induction works on 2 strokes, not like a 4 stroke, but it still works.., but actually doing it would be way hard.
 
Removed unverified data...

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Bad link sorry!

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Doesn't the computer/MPEM get programmed to the 4-Tec"system"?

How would it know that it's on a 787?

******
Better watch it Spim, talking dead cats might get you banned. :) :)
 
It's just a supercharger, im sure it would still be carbureted. If I were to do it I most likely would not use a 4tec supercharger.
 
You learn something new every day...

How do these build pressure in the combustion chamber when the 2 stroke engines have the intake and exhaust ports open at the same time for part of the piston travel? Seems to me most of the pressure on the intake side would escape when the exhaust port is exposed. Makes perfect sense on a 4 stroke with valves.

To the OP. I think you are looking into unexplored territory with a supercharger on one of these. I will get my popcorn....
 
mikidymac said:
You learn something new every day...

How do these build pressure in the combustion chamber when the 2 stroke engines have the intake and exhaust ports open at the same time for part of the piston travel? Seems to me most of the pressure on the intake side would escape when the exhaust port is exposed. Makes perfect sense on a 4 stroke with valves.

To the OP. I think you are looking into unexplored territory with a supercharger on one of these. I will get my popcorn....
Click to expand...

I'll join you, I'll bring the pop corn, we could probably cook it on the engine.

Lou
 
Forced induction on a 2-stroke is DUMB !!!!!! and it's truly a gimmick. In this world... there are a lot of products that really don't do what they are supposed to do. (or even a good idea, or legal) BUT... something like a turbo 2-stroke is a "Mine is bigger than yours" kind of thing.


Why you may ask??


Basically... there are a few reasons.

1) Since you don't have an exhaust valve... you have no way to "Pressurize" and/or force feed the combustion chamber.

2) Since a 2-stroke compresses the lower half, to essentially "Boost" the top end... you can over pressure the bottom-end, and you can blow the bottom of the rod open. (or pop the seals out of the crank)

3) Reflecting on #1... all that "Boost" pressure will just push fuel right out the exhaust. (wasted)


The HP a turbo kit makes on a 2-stroke... can be substituted with proper tuning... but... with MUCH lower costs, and a lot less wasted fuel.


PERIOD !!!!!!!!!!


You guys can debate it if you want... but there is a reason it's really never became mainstream, and that's because it doesn't work.
 
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OK... with my opinion (facts) out of the way.... I'm not sure how you will feed it, using the seadoo supercharger. You can't "Blow though" a regulator carb... and I'm not sure the seadoo supercharger can take the vacuum draw when the carb closes on a draw though system. (The seals aren't designed for it)


IF.....


You really want to try it... go find a little M90 eaton supercharger. They were on a bunch of Buick's, and Fords in the mid 90's, to the early 2000's. That means they are in the junk yards, and can be had for $100 or less.
 
THEREVIVAL said:
Did you try reading through that at all....it flat out says in the middle section " designed for 4stroke models" and then says if you try to force induct a 2stroke your just wasting fuel.....

Dr. Honda is right....as usual
Click to expand...

My apologies, that was a bad link I trusted another discussion board (thumpertalk snowmobiles?) and did not verify!
My first post was an explanation of why forced injection wasn't required for a two stroke, then someone indicated it would work, so I did a couple quick Google searches and thought once again despite 40 years of playing with 2 strokes the forum had taught me something new! Potentially an exception or at least a revision to my understanding of two stroke/tuned pipe operation...


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There are guys who are turbo'ing sleds, aerocharger is doing it on the e-tec Ski-doo's , there is a lot more to it as in electronics etc....More practical for the snow then the water, i'd guess. These are also DI engines. These are not backyard turbo kits, and like Doc said, guys with the loot to pay for them.

http://www.aerocharger.com/kits_skidoo_revxp.php
http://www.youtube.com/watch?v=qN9l-JS8ZLI

Also Boondockers.com is doing turbos like the Polaris Pro RMK

http://boondockers.com/?page_id=35

These guys are doing this stuff: http://www.youtube.com/watch?v=KuHxc2cBmP4

I have no experience with it, just remember reading on it on Dootalk and saw something on the Boondocker kit one day. I'm not disputing anything just throwing out some other info.
 
721.jpg
 
Lmao, I never said it would be practical, but it can work. I found something a few years ago with a bunch of turbo banshees, they were fast as hell. I was never a believer until I saw that
 
Gary13 said:
My apologies, that was a bad link I trusted another discussion board (thumpertalk snowmobiles?) and did not verify!
My first post was an explanation of why forced injection wasn't required for a two stroke, then someone indicated it would work, so I did a couple quick Google searches and thought once again despite 40 years of playing with 2 strokes the forum had taught me something new! Potentially an exception or at least a revision to my understanding of two stroke/tuned pipe operation...


Sent from my SCH-I605 using Tapatalk 2
Click to expand...

No need to apologize we are all here to learn and discuss things. If people didn't express new ideas then we would never have anything to talk about or learn new things
 
Can't find the page for the life of me, but it will work because there is more back pressure on the exhaust side of the turbo then the intake. It won't blow through. I've done a ton of research in the past, just haven't found where I researched.
 
Doc hit all the same points I was going to write. You can't force air/fuel into a 2 stroke. It will all blow out the exhaust.
 
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