Man, I love it when the serious engineers get involved. This reminds me
of when Jon Steiger was driving down the road with bits of yarn taped to
his hood so he could see the air flow patterns!
Really good information, Doug. We need to get you down here to see how
your results pan out in real heat!
Thanksfor the good info. I appreciate it!
Richard in San Antonio
On Wed, 12 Jul 2000 09:10:26 -0400 "Greig, Doug" <douggr@hazelett.com>
writes:
> I performed my little experiment last night on cold air setups on my
> truck.
> I wanted to compare intake/filter temps with various setups. I
> tested four
> different setups.
>
> 1. Stock Intake with K&N drop in filter
> 2. Quick D Intake
> 3. Quick D with rubber barrier next to radiator removed
> 4. Quick D wrapped in heat reflective tape, rubber rem.,homemade
> cold-air
> dam with engine side covered in heat reflective tape.
>
> Test Equipment = Three type E thermocouples mounted in the engine
> bay.
> Signal wires run into the cab connected to three TC hand held
> readouts. TC's
> mounted ...
>
> A=. Engine Bay Temp=mounted next to oil dipstick with wire tie
> B=.Air Filter Temp=mounted on the airfilter, on side closest to
> engine/inside barrier
> C=.Throttle Body Temp=suspended inside airhat directly in path of
> incoming
> air.
>
> Ambient temp was 74 deg F, low humidity. For each test I ran down
> the
> highway 10 miles up and 10 back @ 70 mph, and 5 miles of stop and go
> traffic.Here are the results....
>
> Setup #1 Highway City
>
> TC = A 110-117 F 125-140 F
> TC = B 90-110 F 115-130 F
> TC = C 110-117 F 125-140 F
>
> Setup#2
>
> TC = A 110-117 F 125-140 F
> TC = B 110-117 F 125-140 F
> TC = C 115-130 F 125-140F
>
> Setup #3 *biggest jump in gains
>
> TC = A 90-100 F 110-120 F
> TC = B 72-78 F 100-110 F
> TC = C 95-105 F 110-120 F
>
> Setup #4 *best for stop and go traffic
>
> TC = A 110-117 F 125-140 F note: TC mounted
> in
> between engine and heat barrier!
> TC = B 72-78 F 85-95 F
> TC = C 80-85 F 95-105 F
>
> Conclusions: The biggest single gain I saw was removing the rubber
> barrier
> next to the radiator. The next would have to be wrapping the Quick D
> tube in
> the heat reflective tape. I found this to keep tha air much cooler
> up to the
> TB. As far as the cold air barrier goes, it was only really
> effective in
> normal city driving(anything below 40mph) Anything above 40 mph, the
> air
> coming in from removing the rubber barrier cooled everything down.
> This is
> what I found out. I'm sure the readings are going to very depending
> on
> ambient temp, humidity, etc. The Quick D DEFINATELY worked to move
> the air
> through quicker, but I found the stainless tube to heat the air up
> until I
> covered it in heat reflective tape. After that, I found the TB temp
> to be
> fairly consistant. I want to perform this same experiment again, but
> include
> a G-Tech to figure out HP gains/losses at the same time. Hope this
> helps. I
> had fun doing it :-)
>
>
> Doug Greig
> Winooski VT
> 98 CC 4X4 V6 Sport
> Quick D Intake/ Homemade "Ambient" air setup
> Mod'd V8 TB
> Accel Coil/Wires
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