non-ATLM mod for power maybe?

[ryf]

Ok I'm on a few non ATLM forums and I realized I have seen/tried/played with something that if you used a bigger pump might be fun to try, so I'm posting the conversation (first two blocks are other people, I'm at the bottom) you'd probably need one more like chevy v-8 sized or so, but its still a relatively cheap mod for a turbo. ( I don't think ATLM should adopt it, as your legs are wrapped around the engine, and I have to admit the go cart motor we did (8hp) blew a rod out the back side and did a fair amount of damage, BUT that was after 6 months of us slowly increasing the PSI into the 5 psi range and riding hard, but the benefit at 1-2 psi was impressive, and we didn't have any carb management issues until after 3 psi. so play with it at your own risk, but it was pretty cool.

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ivee seen al the vids on you tube wher pepole are putting turbos on ther engines
apart from being cool wil it make much more power ive just spent today stripping my engine completleay ive made the exhaust port smother and alot bigger and smothed out the sharp corner in the intake ive removed the governer shaft from inside the engin as its not doing enything if i get a turbo what wouldbe best the smalest one i can find or one of the lowest power car ?

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I was wondering the same thing. The big drawback to doing all that work is that it most likely would require modifying a lot of the engine and $$$. I'm sure with the proper mods you could squeeze a few more ponies out of a small engine. I'm thinking of modding mine too AFTER I get everything up and running. Making your exhaust bigger and cleaning up the intake should make the engine a bit more efficient as gases can move through it easier.
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my response-

ok... I'd not recommend this if you do not have a firewall between you and your engine, and the money to buy a new engine if it pops, (superchargers and turbos can eventually do so if you go nuts with the PSI's) you can supercharge/turbo (turbo requires 2 mounted back to back and hooked into exhaust) a normal cart engne for not alot of money if you have some tool and brain power. for a 3-6 hp I'd say out of an older 4 cyclinder would probably be big enough. your only going to get 1-2 psi in most cases, but it will be a noticeable difference and if your motor is taken care of shouldn't be outside the range of your carbs adjustments. I've SEEN this hooked up and it does work, now, it does not perform like a $1400 5+ psi bike turbo, but it works and seat of pants is quite noticeable on small engine (its not going to turn a 5 into a 50 hp, but a 5 into 8 would be within reasonable). I prefer the supercharge (costs less, belt drive it with a secondary pulley or chain, may require use of a jackshaft and/or motor movement depending on engine shaft length. which is where the turbo may be easier, but IMO it won't last as long, and will be harder to regulate PSI using a Blow off valve(if you use a BOV PLEASE use 2 or 3 all set to the same. if one starts sticking, you could end up in a bad deal if your pump is really putting out 5+ psi as these small engines can break apart (hence firewall advisory and me liking superchargers)

another neat idea about the supercharger, would be use a 12 volt electric clutch (A/c or lawn mower blade engager could be source) you could turn it on for short periods and use it like NOS at a higher PSI/flow. this would create a lean condition in the engine, which for long periods would be bad, but it would spin up like it does when it runs out of gas, except it won't run out of gas!

the reason this works is simple, if you can get more air and fuel pumped in, performance will increase, you already know this...... but even 2 psi though it sounds like nothing, is alot if you consider the carb was creating a vacuum just to run and now its not, that will increase RPMS and available power by decreased load.
-- Ryf

[Chris]

I remember reading somewhere about using an AIR injection system off a mid 80's vehicle as a supercharger.

[tractorman]

NOS. NITROUS OXIDE SYSTEM.

This system is alot more perfered. You can get a 10 pound bottle of NOS and hook it up in you carb and you have a 10 horspower increase.

[ryf]

yes, but a small correctly setup supercharger/turbo will not cause as much damage with regular use. pretty much everything I've read on nos is its a good way to break stuff, fun till it does though.

You will not see 10 hp without popping something pretty quick, no matter how you try and get there 1/3 of most of the rated hp of chris's and some others.....more than that for me, I smell a recipe for melting aluminum. you MIGHT if you had a completely custom engine (which would probably be putting out 25+ on its own merit), solid iron block (old school) and your fingers crossed when you push the button. theres no water jacket cooling these aluminum blocks, I just don't see it making it.

[tractorman]

Well yes you are correct. BUT.... You can a smaller shot up to 1 puond of NOS. 1 horspower gain. Do you think you can show us how to hook up a supercharger.

[money89tractors]

.... You can a smaller shot up to 1 puond of NOS. 1 horspower gain....

What would the point be for only 1hp?

-Phil

[tractorman]

Still it is power! you can go up to 6 pund shot but if you done stop there you better have a couple extra motors sitting around!

[ryf]

I can set one up, I have a few pulleys and smog pumps laying around... I'm a little busy lately, finishing my gocart and just today came home with a project boat.

[MTDrider1160]

I can set one up, I have a few pulleys and smog pumps laying around... I'm a little busy lately, finishing my gocart and just today came home with a project boat.

We could probably help you turn that into an amphibious boat

[ryf]

I got a 1963 16 ft Sea Sprite Tri-hull, needs a little work, but got 2 motors (1 thats working 115 hp) a very solid trailer, the hull is really well kept up,  not 1 spider crack visible, I looked HARD. all new steering gear still in box included, plus a lot of new still in plastic parts... heck of a steal. the guy was a cdl driver like me, but works daily instead of like me 7 on 7 off, and just couldn't finish it. he owned it since april and gave up because he just didn't have time or know anything about wiring.

[tractorman]

now this is a super charger. This is what you want. This is used on briggs 5 hp. they are made by clements racing.

http://s183.photobucket.com/albums/x227/tractormans/?action=view&current=BRIGGS_OPEN_1LG.jpg Also I called the guy who made this and he said you can do it two ways fist way is build a box with metal and a shaft running through it and put it before the carb and then put a air cleaner at the other end. or have a custom box built. I would try the first way. Like this.
And you can go to lowes and where the metal rack is get that square tubing and build a box and put thick sheet metal and install 2 bearings for the shaft and at the other end 2 kand n air filters.

http://s183.photobucket.com/albums/x227/tractormans/?action=view&current=untitled.jpg

[Taylor]

Hey guys..... You want a super charger heh??? Well I am going to try to do this!! I have been on the idea for a few year and now I am going to try building a super charger out of a smog pump. Yup a smog pump off a car... Heres how it works I am bassically building a pull threw pump... Alright take your carb and make a adapter.mount to mount to your intake or inlet of you pump so once you have a carb mounted to the inlet you need to make a home made/ custom intake manifold to accept the hose from the outlet of the pump... Once thats done mount a low pressure fuel pump to your carb to feed it so you have enough fuel.... then comes the sorta hard parts you need to make a mount for a pulley/sprocket for the motor to drive the pump... And same thing with the pump gotta make a mount.... So its all comeing but slowly I will keep everyone updated on the project....

[Chris]

Only problem with that is you're not going to get filtered air. I don't believe I've ever seen a smog pump with an air filter - but I may be wrong.

[Taylor]

Some do have air filters but not all.... At this point I have a new smog pump in my hand form a chevy... So I dont think I am going to ahve to worry about getting dirt in the air system....

[Chris]

You realize that if you put this on your ATLM build, as cool as it would be; it wouldn't pass tech - right?