Re: Woody am I ok with a H/E that has 3/8" flow? Also, MB yellow coolant?
Yeah this car is more fun than a new pair of pants with the pockets cut out.
The mod 3 did work well, I just went to the max with the Super cooler to see it to the logical conclusion.
To answer your question, if you use a good size tranny ( 7.5 x 21") cooler it will have almost as much surface area as the stocker. To make it work, you want to cool lots of water so please connect the cores in parallel so they share the flow. This will reduct the restrictions and increase flow in the system which is also the I/C circuit.
The stocker H/E has an inlet and piping size about 1/2 inch diameter, about 0.196 square inches. The 3/8" pipe transmission cooler is about 0.110 square inches in cross sectional area. THus 2 [3/8" ] pipes in parallel are 0.2208 square inches and a tiny bit bigger pipe area. The deal is that the stocker H/E is short in surface area, thicker, has tiny internal passages, and is located about 2" in front of the A/C core and low so that the fan's effect and ram air going thru the radiators are minimal in their cooling benefits.
Placing a strip of foam tape on the bracing of the tranny cores, will serve to eliminate friction and wear of the cores . By using large wire ties on the cores to secure them to the A/C radiator lines and brackers will make them secure. I did weld the two core braces to form a rigid structure that was easier to handle and secure. This "up-close" radiator location will promote greater air flow and thus cooling for the I/C system.
Changes are nice and sometimes give you warm and fuzzy feelings. I can tell you that the water flow that I measured was greatly improved with my pair of [1/2" tube] cores, Summit sum-g4968 @ 7 x 21 x 1.5". The cores flow rates were: stock MB@ 1.5gpm, 2 cores@ 3.1 gpm, LET@ 3.7 gpm and the Super cooler@ 4.0 gpm.
Actual thermal data is needed to define that amount of improvement that you actually get. With that thought in mind, I just opened my mail and received a Zeitronix data logger that I purchased from Needswings. This will give some better data and I hope charts, to show the relative improvement a change does or does not make. With lots of rain forcast, I hope to get the gauges and DL (data logger) installed this weekend and them Ill be better informed than a 3rd grader.
WEEKEND, yeah W
DY
Last edited by waldig; Oct 24, 2008 at 11:25 AM.