mikefrombarrie

Under-hood engine heat is a serious performance robber in almost
all cars. Not only does the under-hood heat cause performance
loss by heating up the intake air, but it also causes
performance loss by heating up the fuel lines. Cooler fuel will
help cool the intake charge, as well as provide for a better
overall mixture.

In order to get this stolen power back, simply go down to your
local hardware store and purchase a roll of refrigerator and
air conditioning insulation. Wrap all of your under-hood fuel
lines with the insulation to keep the cool in, and the hot out.


I read this on some web site, is it worth doing?

jaguargod

How about doing a DIY on this so that people who aren't mechanically inclined will know where to locate the fuel lines. I for one don't know.

Nubo

Man, first the AC, now the fuel lines. Probably the intake and battery box too. I think the engine bay of my 8 might end up looking like the Lunar Lander... :p

guy321

I don't think insulating the fuel lines will help much since the gas tank itself is supposedly getting overheated.

LittleJohn

cooling the fuel may have a slight effect on the intake charge, but it will also make it harder for the fuel to burn efficiently.
I've actually heard pf people warming the fuel to help atomise it better and therefore get more complete combustion

dmp

...and the gas is moving pretty quickly thru said lines anyway...

guy321

Well it's pressurized AND stationary when you car isn't moving.. so in stop and go traffic it could make a diff.. but no more than the gas tank next to the exhaust.

dmp

I guess I wouldn't care about maximizing power while the vehicle is stopped, anyway.
:D

guy321

Everyone else seems to!!! 1/4 mile times buddy!

Did you check your plugs BTW?

dmp

No..haven't checked the plugs...the ****-poor-power-feeling has been +/- gone since the reflash.

I will check them some day,however, and report back to you.



:D

army_rx8

hahaha "Huston....the eagle has landed" :D

Razz1

That's true, the closer to atomization the better.

Nubo

I've heard of excessive heat soak into fuel lines causing vapor-lock. Might be an issue for those who have experienced hard starts after a long/hot run. But I haven't seen reports of no-starts in these conditions so maybe either the heat-soak is within bounds or the fuel pressure is high enough to overcome it.