MOTRV8D

based on my last trip to AZ, I can't imagine anywhere being hotter. So it's encouraging to hear that they tested it there.

DreamHHR

My Mitsu Turbo was obviously a different beast than the 2.0 slated for the SS, but I do recall that the turbine itself was only oil cooled (diverted from the engine oil circuit). There was a statement behind my sunvisor "reminding me" to let the engine idle for at least one or two minutes after spirited driving so that the excess heat would dissipate from the unit.

It's never been a problem as I was always making sure to take it easy just before reaching my destination.

Yves

vandy0419

I don't think there will be a single problem with cooling.

I owned a Saturn ION RL for a while...stock they push 12psi on the M62 which was good for instant torque once I started tuning it.

I shaved the supercharger and put on the smallest pulley possible...never once did the engine get close of overheating. Some places already involved with the Kappas will be picking up on the HHR SS shortly after it is released (already contacted them). The only problem I ran into with the RL was the intercooler pump breaking. This won't be a problem because the HHR SS obviously isn't a water-to-air intercooler...

GM always plays it safe when it comes to cooling...

vandy0419

Does anyone know how many IAT sensors there are in the LNFs?

MOTRV8D

I recall these exact same words from an old friend who used to drive an 82 Volvo Turbo. He always tried to let 'er cool down before he shut it off. Prolly something very good to remember for anyone who owns a turbocharged car.

vandy0419

Turbo Timers will help...

DreamHHR

The (potential) issue with turbocharged engines is not engine overheating per say, but rather of the turbo unit itself. It is compressing air @ god knows how many RPMs, and that generates a lot of heat in itself. It is sitting outside of the engine and thus not cooled by the engine coolant circuit, and uses exhaust gas pressure to spin (not the coolest source), so yeah, heat dissipation can be a problem.

The risk is to damage a very expensive part of the engine, i.e. the turbo. Back in the early '90, getting a new turbo for my mitsu was 2500 $CA from the dealer. I'm not even sure that included installation.

Yves

007panel

Most modern turbos today are liquid cooled with the engine cooling system.
Some older Garretts (pre 86) were oil only and required a longer cool down time but Ford later moved to water cooled center sections and then away from turbo to Superchargers for warranty and reliability reasons.
The average North American driver is not a good turbo candidate but better suited to big V-6 or V-8 engine.

MOTRV8D

Just curious, what kinda driver would be a good "turbo candidate?"

007panel

One that does not do a lot of stop and go driving or short trips to the corner store 6 blocks away.