Thread: Home Made Blower?

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Interesting thread that's all I can say. It sucks once you find out that your plan that got your hopes up won't work doesn't it Chevy? I know how it feels, that has been happening to me a TON the past few days.

You know I wanted one of these for my Chevy Sub cuz when you get up to about 10,000 feet it pours out black smoke and is probably putting out ...mmm not kidding 40Hp? You can't get it out of first or above about 15MPH..

This little excursion into this subject has made me finally dig up the numbers and has dashed my plans to put in push button altitude nullification.

Dream's in ruins....

Originally posted by techinspector1
well Chevy, the outlook is bleak to say the least. Maybe you'll want to put that box of blower motors on e-bay

Thanks to Jack and kcress for pitching in and giving all of us an education.

Mike, you knew you were right all along, didn't you, you crafty devil !!!

Thanks to everyone else who responded and/or viewed this thread.

im sure glade i didnt spend all that money on my blowers for nothing. I hope I learned at least that much messing with them for 20 yrs. and yes I did know you couldnt do that ,but i didnt see a whole lot of people tell me i might be on to something. it was a interesting shread though.

Originally posted by kcress
You know I wanted one of these for my Chevy Sub cuz when you get up to about 10,000 feet it pours out black smoke and is probably putting out ...mmm not kidding 40Hp? You can't get it out of first or above about 15MPH..

This little excursion into this subject has made me finally dig up the numbers and has dashed my plans to put in push button altitude nullification.

Dream's in ruins....

about 2500.00 will take care of all your problems.

Mike, it's interesting to note that you used the word "shread" instead of "thread". Pretty appropriate, I'd say.

Originally posted by techinspector1
Mike, it's interesting to note that you used the word "shread" instead of "thread". Pretty appropriate, I'd say.

a little type-o error there tech. just a few cobwebs left over from the last few weeks i guess.

Hey all and Chevy 37

It's my figuring that the belt driven centrifical blower makes the most sense.

The streetable blowers I've seen seem kinda problematical. The vanes have to be worn in... (Anything that can wear in can probably ware right on out again)..

They seem loud, the whir of the vanes, and all.

Whereas a centrifical has only one? moving part? You could gear it anywhere.

I will look into it.

Anybody out there got experience with one?

* * * As a preface I will state that it's half past midnight and my head may be up my arse. * * *

The original question posed by Chevy37 was "could a simple mechanism be assembled that would yield modest results?" I'd like to examine this again with that objective in mind.

The "average" production vehicle operates at a volumetric efficiency (VE) of 0.82-0.88. If the objective would be to improve the VE to "nothing" more than unity (1.0) then no true compression of the air is required, boost in the classical sense is not attempted, and the amount of horsepower required by the blower is substantially less.

In a perfect world improving the VE of a given engine from a 0.85 to 1.0 would yield a 17.6% gain, or in real numbers your 300HP engine would now be producing 353 HP. This can never be realized due to intake tract restrictions (air cleaner, throttle body, etc.), but there could be room for noticeable improvement on older engines with less efficient intake tracts. I suspect that tuned port motors would show minimal benefits.

Standing by to be flamed,

Mark

groannnnnnnn............................................................

So the question becomes... just what fraction of a PSI is required?

If it is below about 4inches of water column you might have some vague chance.

It will come back to a hassle worth doing is worth doing well... that is 6PSI?

I bet at an idle you could boost reasonably OK but once you get to 100 cfm you must earn that boost.

This is were you need a big frikken blower, an engine on a dyno. And a Variable AC Drive to run the blower where ever u want it. Or even a a damper to waste gate and control the boost. And a manometer to track what boost is needed.

groannnnnnnn............................................................

I know, I know, should have let it die.

G'nite, Mark

Supercharging two strokes by using another cylinder or piston is as old as two stroke motors.It's been done lots of times and many racing two strokes of the thirties were set up like that,But if you want to see the ultimate blown 2 stroke,haver a look at diesel locomotive,All the older EMD's ( a GM product) have engines ranging from 1500 HP V8's up to 6000HP V16's ,all 2 stroke ,all blown by the biggest GM blowers you'll ever see!!!

Get a cheap turbo and a air box ,mount the turbo under the wheel well like a cold air intake , use compressed air to run the turbo and use it like u would N2o,all u need special is the little flapper thingy in the air tract so when it comes under pressure it closes off the outside air and uses the turbo air untill pressure drops back off and then the flapper releases and u go back to the outside air!!!!!!! sorta a sleeper setup!!!!!and if u figure how little air pressure the exaust actually puts out u can see that compressed air will give u much much more than a normal motor can handle This would be a really hot setup if u used it in say cali where N2o is illegal on the street.All I can say is hold on because this isnt going to come on slowly like a turbo normally spools ,this thing will go till u blow the head gaskett off or limit the air with a regulator.This is experimental and as with exsperiments it could get outa hand pretty quickly I would be thinkin safety safety safety!!!!!!!!I think this will fall in the catagory of home brew for u and actually work!!!!Like most things home brewed ,there is almost always a way to do this more easily ,and more efficiently,but probably not any cheaper.Just though I would give a idea to cobble on that would produce some impressive gains for all that effort.U will see this applied to alot of turbo cars here soon,normal turbo installations using compressed air to spool the turbo on the line and leave under full boost