Supper Charger, Turbo Charger, or My Creation

[Mr2Spyder2828]

I am concidering building a new type of forced air induction and just wanted to know what you guys though of it and if you think it will work and if you have any design suggestions. Do you know those squirl fans they use in basments and stuff to vent the air? They look just like turbos and supper chargers except that it is electric. I was thinking of connecting that squirl fan up to the air intake and connecting the SF(squirl fan) up to an electrical switch that I would only turn on from rev points above 3,000rpm to redline then switch it off until I get in next gear at 3,000 rpm. Would the ECU register this boost in air or would I have to do something to make sure this doesnt blow my engine. I am going to buy a 100$ car and try it out on that piece of s. If it works good on that engine I will be putting it on my MR2 Spyder.

If this works it will be cheaper than nos to add boost to your car. How would I measure the amount of boost the SF is pooting out before I put in on an engine??

I was also thinking about taking off my exhaust pipes at the engine before it reaches the cat. what do you think would be the ramafacations of doing that other than its illeagal. It would make the car louder and it would run better I think.

[klohiq]

The fan idea would probably not add much boost. Nitrous is for the drag strip mostly so I wouldn't reccomend it. Either turbo it or Supercharge it...those are your best options and those will definitely add a decent amount of performance gains.

About the exhaust, either leave the stocker or get an aftermarket. If I understand you correctly, you basically want to remove it alltogether which could cause a loss at the low-end significantly and the mid-range while only adding a little to top-end most likely. I'm no expert, but that's my assumption.

[Mr2Spyder2828]

Thanks for the opinion. What do you think would happen to performance if I took all the mufflers off and the cat, but just had a strieght pipe out to the back of the car. Why dont you think the electric fan would work I mean how much air could the supercharger be puting in anyway.

[klohiq]

well a turbo and non-roots type superchargers are non-linear (hence the power gains mostly at the top end with progressively larger turbos running worse at lower rpms) and therefore when the engine is spinning at say 5000 rpms the turbo could be spinning at speeds in excess of 100,000 rpms...no fan I've seen can do that...you need a turbine. Superchargers are somewhat slower because they are linear and that's why some people like them more...because they don't have a sweet spot like turbos and can be used in nearly the whole rpm range.

That little fan may add some hp, but no more than 10 I bet, I dunno even what you are talking about when you say squirrel fan, but I doubt it's capable of moving air at a decent speed.

If you want an exhaust then get some custom 2-2.5" piping and a high-flow muffler like an Apexi or another decent brand. They will give you a slight performance increase, modified powerband and will sound much better than most anything you build yourself.

[Amish_kid]

Originally Posted by Mr2Spyder2828

I am concidering building a new type of forced air induction and just wanted to know what you guys though of it and if you think it will work and if you have any design suggestions. Do you know those squirl fans they use in basments and stuff to vent the air? They look just like turbos and supper chargers except that it is electric. I was thinking of connecting that squirl fan up to the air intake and connecting the SF(squirl fan) up to an electrical switch that I would only turn on from rev points above 3,000rpm to redline then switch it off until I get in next gear at 3,000 rpm. Would the ECU register this boost in air or would I have to do something to make sure this doesnt blow my engine. I am going to buy a 100$ car and try it out on that piece of s. If it works good on that engine I will be putting it on my MR2 Spyder.

If this works it will be cheaper than nos to add boost to your car. How would I measure the amount of boost the SF is pooting out before I put in on an engine??

I was also thinking about taking off my exhaust pipes at the engine before it reaches the cat. what do you think would be the ramafacations of doing that other than its illeagal. It would make the car louder and it would run better I think.

Won't be done, well if you try you might make about .2 lbs of boost. A turbo usually spins in the area of 150,000 rpm so good luck to you if you do ever manage to make power with that.

[94tegRS]

also if you flick it on at 3k and then shift at redline, no need to flick it off and back on at 3k, cuz first, you want the power all the time, 2nd, youd HOPEFULLY be above 3k in the next gear and 3rd, it wont work anyways. youll probably decrease the performance, on the top end, the engine natuaral vacuum would probably suck in more air than that fan pushes, and juts slow it down some. im sure there are gig enough motors to mount to a fan to be strong enough to gear up a litle fan to get a small amount of boost but then it wouldnt fit under your hood anymore.

[drazhartd]

Don't do the fan (or "electric turbo") idea, you'll get so ridiculed. A fan can only spin at a small rpm, so no more than a 10 hp gain will be evident. Just get a K&N ok? please?

[Mr2Spyder2828]

IF I get an electric fan how can I measure the amount of air it is pushing thru a 2in pvc pipe, to test it. I know this is a crazy stupid idea but it might be worth looking into if I can get a fan to move that fast .

Lets say that I could get a electric fan to put out a good amount of preasure. then what would I have to do to the engine to make sure it was able to take the air.

can you compare the amount of air a supper charger is putting thru a pipe to something else so I can know how much air preasure I am going to need.

[94tegRS]

ok, first, ill say again it ont work, otherwise dont you think everyone would have a 100 dollar turbo instead of a 3kdollar kit. and 2nd if you ever got boost, since it would be very minimal, you dont need to do anything, butto be safe you could just get a rising rate FMU, it mountrs between the fuel rail and return line and then a hose form the manifold goes to it, for every pound of boost(pressurized manifold) the FMU bumps up the fuel pressure and everytime the injector opens it now spits more fuel. they sell 10:1 and 12:1 is so far what ive sen, it is for ever pound of boost the fuel pressure is increased 10 pounds, or 12 pounds.

[klohiq]

Well to get a very limited idea of how much a turbo is putting out then get someone to rev their engine to a couple thousand rpms and feel how fast the exhaust is coming out. That's fast and it's not even close to how much air a turbo will offer...especially a medium/large unit.

[Mr2Spyder2828]

Thanks I will see what that is like. What do you think I sould to to my 1ZZ-FE engine it is in a 2002 Mr2 Spyder. I was thinking about Turbocharging it but I think Supperchargers are better. However I love that spool sound from the turbos and the waste gate chhhhhhhhhh sound from turbos.

The engine is a 4 banger and is 130 hp. 1.8 L There are like 4 mufflers on it and a cat.

[HondaChili]

Will the car even recognize an insignificant boost like that?

[94tegRS]

well, the pshhhhh noise you are talking about is the BOV, only opens when you shift/let off the throttle. the wastegate opens everytime the turbo starts boosting more than it should, it lets exhaust pass by the turbine instead of spinning it faster, and goes through your exhaust and you wont hear it. if I were you id TC it myself, but its up to you.

and no i dont think a car will recognize the small boost from a fan cuz like ive stated before I do not believe that a fan will produce boost.

[Mr2Spyder2828]

OK OK OK I am giving up on the electric fan idea

But I would like to know what I sould say to the car shop when I want to go get a turbo put in and any sugestions of what brands to get and what extra stuff I should get. I just want to be faster I dont want to get to crazy with the boost. I want to spend about 3g's or less.

[94tegRS]

dont know the exact specs of stock fuel delivery but your moist likely gonna need higher flow fuel pump, larger injectors, some sort of FMU or a ECU piggyback like the (ive heard you can tune it with the SAFC), if you buy a turbo kit themn most likely itll come with almost everything needed.