[dremd]

I can tell you from my supra experiences that EGT's are with in 200 deg of where the will be at full temp in 30 seconds (Say 700F in 30 seconds of light driving).

Also had an idea in regards to drain back.
How about a drain back + heat exchanger?

Basin/ tank low mounted, submersible pump in tank, pump water up to exaust manifold heat collector, through a exhaust heat water -> coolant water heat exchanger, then back to the tank.

If we could weld some tubing on to the exhaust manifold we'd get way better heat transfer.

For the Drainback/ exhaust heat -> coolant heat exchanger perhaps a heater core with engine coolant flow ruining inside it with a box around it containing drain back water. Just an idea.

Issue will be how much heat can we steal off the exhaust stream before the catalytic converter has issues.


I *think* that would all work.

Other question is how much gain will you get out of it? very cold climate + pulse an glide probably a good bit. Warm climate + turbo diesel probably not a lot.