View Full Version : Bar and plate vs tube & fin fmic

02-07-2014, 05:18 AM
OK I'm about to build a fmic the plan is to use a 31x12x3 (maybe 4) core and 2 3/4" pipe . What is the best way to go tube and fin? Bar and plate? Delta fin??what's better and why?

02-07-2014, 08:30 AM
Depends on your planned use of the car. I ran a delta fin in my car with great success on the road course, but it wasn't so good for the 1/4 mile.

Testing showed that the bar and plate is better for 1/4 mile runs as it can soak the heat up faster, but they tend not to release the heat as quick as the cooling air flow through them is less efficient because of the square edges.

The delta fin is better for long endurance so long as you have good air flow through them, because the cooling air is less turbulent so heat removal is more efficient, but if air flow is low then they heat soak quicker as they don't have the surface area as the same sized bar and plate.


02-07-2014, 08:42 AM
I was leaning twords bar and plate it sounds like that's what I need. I figured they were better since they cost more lol

02-07-2014, 10:52 AM
Well I just broke down and ordered a CX 31x12x3 bar and plate core which will allow room to add fans.