yet another warm air intake thread

[lico]

So far my only vehicle mod is a warm air intake.
It will take time explain, hope will be understandable.
My tiny car is a single point injection, so this big single injector it's mounted close to the airbox, before the throttle body. To avoid gas condensation over the wall of the intake manifold Lancia's engineers ( to be honest Fiat) have made 2 modification: first, the throttle body is heated by coolant; second, the airbox have 2 intake, one connected with a long rubber pipe that suck air behind the right headlight, the other is connected to a corrugated "paper" pipe very short, this take the air in the middle of the exhaust manifold.
As soon i can post pictures i will edit this post.
Inside the airbox we found a small flat "valve" ( it's a small flat round-ish piece of hard plastic), drived by a heat sensible element ( thermostat, like the one of the coolant circuit), that open, close and mix the hot and the fresh air in the airbox.
My simple mod was detach the small extensible arm that move this valve and close the fresh air intake.

I just do this, so i don't have any data, just one 40 km ride, but the car it's quite different, way more smooth at ultra low rpm, I really need to downshift less when going uphill or set the cruise speed.
In the next week I will see if there is any relevant gain. My best tanks was always just behind 22 km with one litre
Stay tuned for more

[lico]

I take some pictures
First it's just the engine bay.
Second we can see the airbox 1 and 2, the number 2 it's where we find all the components described in the post before, 3 it's the cold air intake, 4 the warm air intake. 100% stock.
the last picture it's the inside of the airbox number 2, when you take off the air filter you find
1 heat sensible element.
2 just over the 2 yoi can see the hook that moove back and for, it will be attached at the number 3 (at the left of the number).
4 it's the CAI, now tapped by the "valve" 5.
6 just down of the number you can see the WAI.

except for the detached hook and the blocked valve with the black zip tie it's 100% stock

my vocabulary and grammar are quite poor, must be a pain reading.

[Vman455]

Noi parliamo poco italiano. We're happy you can type in English at all, because we stupid Americans are much less comfortable speaking your language!*

That's an interesting factory setup--I don't know of any cars in the American market that came with an active warm-air intake.

*I had an 8-week crash course in Italian at the Missionary Training Center in Provo, UT, years ago before I decided not to go on a Mormon mission. But I've forgotten nearly all of it! Which is okay, because most of our vocabulary was religious.

[19bonestock88]

My old Ford Ranger has something like that, but it was carbureted... being an ignorant 16 year old I took off the warm air hose... truck dropped some mpg afterward but I can’t remember how much

[arcosine]

The warm air intake and TB heating is to prevent icing in the winter, and stabilized the temperature for emissions, not meant for helping MPG, which it does.

[lico]

arcosine i tink your statements are partially wrong..it will take me a bit of investigation, but for sure the WAI it's not for prevent icing, it's for preventing gas condensation on the wall of the intake manifold. MPI don't have WAI, cause the injectors are right before the motorhead, so gas will never form dropplet on valves nor on the laat section of the aspiration system wich resides in the engine head.

[arcosine]

Does not take much digging. Our '63 rambler would ice up and stall every time in was cold started in the winter, until it was warmed up.

https://www.hemmings.com/magazine/hc...g/3747511.html

[lico]

Tomorrow or monday I will fill up again the tank and I will see if there is some better mpg.
Today I have take half day off and make some maintenance. Oil, oil filter, air filter and spark plugs.
Spark plugs were very used, electrodes were all the way down consumed, my bad.
what i find strange, was the evidence of lean burning. someone know how much time take to get the white layer when you start go lean? will be enough drive 400 km?
thanks

oh, i have changed too the gasket of the "tappet cover"..how it's called in English???

[gone-ot]

"tappet cover" = "valve cover"

[lico]

The pump judgment have been ruthless.
Will try different drive style, I was too confident with the ood response of the engine in low rpm.
I need to get an rpm gauge, i need the zener diode and a couple of resistors for the mpguino.