Quote:
Originally Posted by sperry
Finally, I'm still trying to decide on converting back to a TMIC or not. Certainly, I've got a great setup now with my Perrin FMIC (aside from the heat soak on long straights) and would rather keep it instead of spending money on new parts. Matt, I was thinking about what you were saying regarding the empty hood scoop preventing the FMIC/radiator from working well... wouldn't that also be true with a TMIC? Would a scoop block off plate and some potential revisioning to my under-engine aero potentially work better than a good TMIC for fighting oil/water temp issues? I'm thinking about trying that first, then converting back to a TMIC if it doesn't help.
Another idea I had is that I'm missing the forward floor pieces of my fender liners... I wonder if air is actually piling in behind the radiator from the sides via the open fenders, thus greatly reducing the flow through the FMIC/radiator/oil-cooler even with the OEM splash guard installed. A very simple flat/wide splitter under there with a nice trailing downward lip on the back (replacing the stock splash guard) might solve all my cooling issues at the track. Comments?
|
The TMIC partially "blocks" the scoop hole so there is a pressure drop across it, just like there is a pressure drop across the radiator. So the engine compartment is at lower pressure than the front of the car and air flows into it through both the radiator and TMIC. With an FMIC there is a wide-open tall scoop that tends to pressurize the engine compartment which will reduce flow through the radiator. That is the theory anyway. Crawford says it is very noticeable on the 08+ and even results in some front-end lift at speed.
The open fenders may not be helping either, but I doubt that is the main culprit.