How to build your own Warm Air Intake (WAI) - Page 6 - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 09-15-2010, 12:03 PM   #51
Registered Member
 
sporadic's Avatar
 
Join Date: Sep 2010
Posts: 1
Country: United States
Re: How to build your own Warm Air Intake (WAI)

OK, I had to register just to reply to this thread.
Of the replies here, Ted Hart was the only one who spoke some truth into this matter and he was ignored.

I design, fabricate, and tune my own vehicles for both daily driving and racing purposes. This vehicle in particular is NOT built for mpg. My other vehicle (a minivan) is why I was poking around here.
My "toy" is a turbocharged 4 cylinder.

Ted Hart was accurate but not descriptive for this audience.
Here's how today's MAF-controlled vehicles are tuned:
They run off various pre-determined fuel, timing, and MAF-transfer tables which are set by the original manufacturer.
ANY modifications to the fuel, spark, or air will throw off these preset measurements and requires a re-tune.
There are various sensors such as the MAF, O2 sensor, and knock sensor which will attempt to compensate for these changes but it will not be optimal.

By drastically increasing the air intake temperature you all have completely thrown off some if not all of these OEM tables.
The danger here is in the spark timing.
The ECM can only adjust for so much hot/thin air before it will start to detonate (the combustion starts before the piston is in place).
Too much/constant detonation and your nice "efficient" burn is now an inferno burning holes in your valves and pistons.

What I must be concerned with in my turbocharged vehicle is keeping the intake temperatures down to reduce spark knock.
Due to extreme pressure in the cylinder introduced by boost, even the slightest knock can burn holes in the rotating assembly parts.
This is the extreme and highly shortened version of what you are doing to your engines over a long period of time.

It is highly possible that the knock sensor in your vehicle is compensating by pulling timing for this hot/thin air.
If that sensor goes bad, good-bye engine.

I say this to inform you, not to deter you from your goal.
There is a reason auto manufacturers use built-in cold-air intakes nowadays.
It is the ideal for the balance of engine longevity, power, and mpg.
__________________

sporadic is offline   Reply With Quote
Old 09-17-2010, 05:34 AM   #52
Registered Member
 
Join Date: Dec 2007
Posts: 618
Country: United States
Re: How to build your own Warm Air Intake (WAI)

Some, if not all cars experiencing success with HAI are equipped with MAP sensor instead of MAF.

MAF cars do not see noticeable gains from HAI's because like you said, there are other sensors/programs that will negate any influence of HAI rendering it useless and a waste of time/money to install.
__________________

__________________
John
'09 Saturn Aura 2.4L
'94 Chevy Camaro Z28 (5.7L 6sp)
'96 Chevy C1500 (5.0L 5sp)
'08 Kawasaki Vulcan 900 Custom
'01 KTM Duke 2
Project84 is offline   Reply With Quote
Old 09-17-2010, 07:59 AM   #53
Lean Burn Mode
 
pgfpro's Avatar
 
Join Date: Feb 2010
Posts: 401
Country: United States
Re: How to build your own Warm Air Intake (WAI)

Its nice to be able to control your timing /fuel tables through an engine management system when running a WAI. This way you can tune to run extremely high IAT's and not hurt anything at very light load conditions.
__________________
pgfpro is offline   Reply With Quote
Old 08-09-2011, 09:44 PM   #54
Registered Member
 
Join Date: Aug 2011
Posts: 4
Country: United States
Re: How to build your own Warm Air Intake (WAI)

I came across this car on line that has 376 mpg! crazy stuff. It seems that it uses a hot air intake from the cooling system/radiator. The hot air vaporizes the fuel being injected. Also they us a smaller carburetor than the original one that came with the car. It's the 1959 Opel P1 experimental car from 1973 Shell test vehicle. I wonder what kind of horse power it has. I suppose if you run a car at 30 mph you will get real good gas mileage.
Ken Stevens is offline   Reply With Quote
Old 08-10-2011, 12:57 AM   #55
Registered Member
 
Join Date: Aug 2011
Posts: 4
Country: United States
Re: How to build your own Warm Air Intake (WAI)

Here is a 100 year old idea and simple. On this old carb they put a small heating coil in it to heat the air.
Ken Stevens is offline   Reply With Quote
Old 08-10-2011, 01:01 AM   #56
Registered Member
 
Join Date: Aug 2011
Posts: 4
Country: United States
Re: How to build your own Warm Air Intake (WAI)

[IMG]file:///C:/Documents%20and%20Settings/Administrator/My%20Documents/Downloads/70593.jpg[/IMG]
Ken Stevens is offline   Reply With Quote
Old 08-10-2011, 01:03 AM   #57
Registered Member
 
Join Date: Aug 2011
Posts: 4
Country: United States
Re: How to build your own Warm Air Intake (WAI)

sorry i am having quite a time posting this image. here is were i got it from.
http://www.mtfca.com/discus/messages/50893/70303.html
Ken Stevens is offline   Reply With Quote
Old 08-10-2011, 03:52 AM   #58
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Re: How to build your own Warm Air Intake (WAI)

Fixed:


The text that is there with the carburetor: "For a carburetor junky like me this has been a most enjoyable thread. It is estimated there were over 200 different carburetors made for the T engine.
The Wizard (1st photo), and Simmons Super-power sold by Western Auto are among the more common ones. They were essentially twins. They both had a heating coil and both used a pot metal flapper to regulated low speed mixture."
__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 08-10-2011, 04:44 AM   #59
Registered Member
 
GasSavers_Erik's Avatar
 
Join Date: Nov 2006
Posts: 1,027
Country: United States
Re: How to build your own Warm Air Intake (WAI)

The coil in the carb pic above looks more like a turbulence device to me. I don't see how it could be an electric heating coil since both ends appear to be connected together- maybe there is a very thin insulating washer in there?
GasSavers_Erik is offline   Reply With Quote
Old 08-10-2011, 05:42 AM   #60
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Re: How to build your own Warm Air Intake (WAI)

It looks like the bolt goes through an insulating washer, one end of the coil contacts the bolt, and the other end contacts the carburetor body. I'm not sure that little coil can provide much heat though...maybe if it got insanely hot, but then I'd be worried about concentrated heat so close to fuel.
__________________

__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Large Fuel Tank capacity JQL Fuelly Web Support and Community News 7 04-04-2010 04:52 AM
Incorrect Milage Calcuatlion PatM Fuelly Web Support and Community News 4 07-17-2009 08:21 PM
Synthetic motor oils and MPG TONYPR70 General Fuel Topics 13 01-06-2009 06:36 AM
Need way to indicate a missed fuel-up entry exists silente Fuelly Web Support and Community News 7 08-20-2008 08:46 AM
Throttle spring...pedal vs RPM? ZugyNA General Fuel Topics 17 08-01-2006 05:17 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 12:52 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.