Community Forums

Freddy · 06-14-2006, 03:19 AM

I have come into possession of a blower from an air hockey table. Not sure of capacity yet, but seems like it would be ideal for adding additional air to the engine.

Perhaps installing it just up-stream of the filter would provide more air to the engine!?

The only installation problem is that it runs on 115VAC.

I also have a small compressor that runs on 12VDC that probably could be used, and easier to install.

Is any amount of "extra" air to aid combustion good, or is there a lower limit in which I'd just be wasting effort to install either of these components?

I'm not trying to install a turbo boost...just aid combustion as much as practical with equipment on hand.

Freddy · 06-14-2006, 03:19 AM

I have come into possession of a blower from an air hockey table. Not sure of capacity yet, but seems like it would be ideal for adding additional air to the engine.

Perhaps installing it just up-stream of the filter would provide more air to the engine!?

The only installation problem is that it runs on 115VAC.

I also have a small compressor that runs on 12VDC that probably could be used, and easier to install.

Is any amount of "extra" air to aid combustion good, or is there a lower limit in which I'd just be wasting effort to install either of these components?

I'm not trying to install a turbo boost...just aid combustion as much as practical with equipment on hand.

Tincup · 06-14-2006, 04:18 AM

I'm not a wrench head or an engineer but I don't think you'd gain anything. First you're converting 12Vdc to 120AC that's consuming energy, then there is the added weight of the two units. I think the energy gained would be offset by the energy used to generate the energy gained.

Just my two cents.

Tincup

Freddy · 06-14-2006, 06:06 AM

Hey, and thanks for your "two cents."

Both the compressor and the blower weigh ounces, and probably not over a lb., esp. for the blower.

Paulin · 06-14-2006, 08:37 AM

The June 2006 issue if Motorhome Magazine (pg. 103) shows how someone installed an Atwood 4000 inline blige blower to his air intake on both Ford 460s and Chevy 454s. Can't tell from the article
if these engines were fuel injected of carb. He claims good results and a highway MPG increase too.

Freddy · 06-14-2006, 09:32 AM

I saw that, hence the "idea." Doesn't look to difficult to install a small CFM compressor into the air intake. Just wondering how much air has to be injected before there's a noticeable change in fuel performance.

Oemtech · 06-14-2006, 11:21 AM

Humm.... The MAF only flows 890 cfm from what I read. So, where were you going to put the blower - in front of the MAF or behind the MAF?

Jestme13 · 06-14-2006, 12:01 PM

i sure hope he ain't a behind kind of guy. the behind idea ain't to cool.

Oemtech · 06-14-2006, 02:39 PM

Jestme13 you have your terms confused.... we are talking about air INTAKE and not air EXHAUST

rogueii · 06-14-2006, 05:04 PM

When you are suffocating, Air is Good!

Freddy · 06-15-2006, 09:29 AM

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by oemtech:
Humm.... The MAF only flows 890 cfm from what I read. So, where were you going to put the blower - in front of the MAF or behind the MAF? </div></BLOCKQUOTE>

In my original question I said that I would put it upstream of the filter. To me, that means ahead of everything else.

Jestme13 · 06-15-2006, 10:18 AM

Cruzer · 06-15-2006, 10:20 AM

An 8.1 liter engine displaces 494 cubic inches. At 4,000 RPM a 4 stroke engine (2,000 power strokes per minute) will require 572 CFM of airflow. (If you starve the system by restricting it, you'll lose cylinder pressure, and horsepower. By putting a larger fan (supercharger, etc) on it, you won't increase the airflow because the engine is a fixed displacement. But, you will increase cylinder pressure, and that's what gives you the "push" on the piston.

The key is whether or not the engine management system can properly mix the fuel-air ratio. If you add extra air but not fuel, you'll burn lean and hotter, which is a really bad thing if you're a piston top.

If the ECM can add fuel to mantain the air-fuel ratio, you should be able to realize a horsepower gain.

However, more power comes from more fuel so I don't see any improvements in fuel economy from this. The only way I can see that is if it's an older engine that wasn't living up to it's potential because of a weak link someplace in it's power design. I personally don't see that as the case with a recent year Vortec 8100, which is a pretty well optimized powerplant.

On the other hand, if the blower wasn't turned on, it would probably act as a restriction to the engine's airflow.