Upgrading the VMP Tuning SuperRaptor with an Afco dual-fan heat exchanger
By Steve Turner
For many a 6.2-liter V-8 engine might be sufficient, but for anyone reading this, itâ€™s probably just a good starting point. As we shared with you in our feature, VMP Tuning bolstered SVTâ€™s off-road wonder, the F-150 Raptor with one of its TVS supercharger systems. Yet, as we know, one good mod usually begets another.
When it comes to supercharged engines, heat soak is the enemy. In a Raptorâ€™s preferred environs, the truck will spend a lot of time running full-tilt at wide-open throttle. This is when the boost temps will start to rise and power will level off. Thatâ€™s not what you want when itâ€™s time to climb that next big hill.
Yes all the positive-displacement Raptor supercharger systems include air-to-water intercooler systems. These systems pump coolant from the lower intake-mounted intercooler core to a heat exchanger mounted in front of the stock radiator. This system transfers the much of the heat generated by the boosted air to the coolant, which is cooled by the air flowing over the heat exchanger.
That said the intercooler setups on the base supercharger systems are designed to work with the prescribed boost levels and typical short WOT bursts on the street. Start pushing harder in racing environments or off-road, in the case of the Raptor, and heat soak can set in. The system canâ€™t remove the heat from the coolant fast enough; the PCM pulls timing, and things get less fun.
Thankfully there are aftermarket upgrades for aftermarket products that help us push our rides to even higher levels of performance. We recently featured VMPâ€™s SuperRaptor project, which features one of VMP Tuningâ€™s popular TVS supercharger upgrades. Recently picked up by a new owner, the blown Raptor was slated to have some prolonged off-road fun in Texas. The new owner wanted to make sure the boost temps stayed in check.
To that end, we met up with VMP Tuningâ€™s Justin Starkey to follow the installation of Afco Racingâ€™s new dual-fan heat exchanger for supercharged Raptors (PN 80284PRO; $799.99). Designed to drop intercooler coolant temps by as much as 30 degrees and stabilize them, this massive heat exchanger features two 10-inch fans that move a constant flow of 1,600 cfm across its core. Since the truck already features a VMP supercharger with an intercooler system, the upgrade is straight-forward and only takes about an hour to complete.