Thread: Reusing Auto Engines.

Originally Posted by longrange308

Commy v6 or vq series
Won’t get the torque with a 4 cylinder

Those old 3.8L V6 Holden motors were built proof.

Was going to suggest a manual pumped qd32
Late model Honda stuff turns the right way but you would need aftermarket ecu
To get away from electronic throttles and other shit you don’t need

Front runners look like the V6's, Buick 3.8, VQ30DE or VQ25DE. Most of the straight 6's seem to be from RWD vehicles that get thrashed by the wheel spinners. Buick would be best match speed wise but the Nissan's are within coeey.

how is it cooled? if no heat exchanger I would stay away from alloy if used in salt water.

Originally Posted by ONYVA

how is it cooled? if no heat exchanger I would stay away from alloy if used in salt water.

The current engine is raw water cooled. That with the fact it is about 45 years old and hard to get parts for makes me keen to do a swap. The replacement set up will have a heat exchanger added so that fresh water will continue to be used in the engine. Word is, from a US marine engine site, that it is not a good idea to add a heat exchanger to the old engine as the fresh water with anti freeze/boil will tend to find where the engine is corroded and eat out what is left.

I agree, anti freeze finds any leak

The Ford Bara engine might be worth a look as well. If you go aftermarket efi there is a surprisingly small number of sensors that you need to run an engine, in fact the megasquirt (and probably most others) can make an engine run with just the engine speed and manifold pressure sensors...
My Range Rover is running with;
Crank speed/position sensor
MAP sensor
Air intake temp
Coolant temp
Throttle position

and sometimes a wideband O2 sensor

The only outputs are
4 ignition outputs (wasted spark)
2 banks of injectors
idle speed valve
fuel pump relay

They are really pretty simple when you strip away what isnt needed, a later engine with variable cam timing will need a cam position sensor as well

Originally Posted by gadgetman

Front runners look like the V6's, Buick 3.8, VQ30DE or VQ25DE. Most of the straight 6's seem to be from RWD vehicles that get thrashed by the wheel spinners. Buick would be best match speed wise but the Nissan's are within coeey.

Dam you
Now I’m planing number 7