High Torque starter more efficient ?

[Jean-Seb]

I was wondering if anyone knows if a high torque starter is more efficient than a full size one. I'm assuming it takes more energy but in a shorter period of time.

I have the full size one on the car and a high torque in the living room, I don't know if it's worth the time to put it on.

[ShadeTreeMech]

The high torque starter has a gear reduction which means it can start the engine with a smaller electric motor and most likely fewer amps. It also weighs a bit less. But to be quite honest, unless the one in your car is going out, there isn't an advantage to swapping it out.

Newer cars are going to high torque starters, which are likely cheaper to manufacture, and fit into tight spaces easier. So the availability of parts are better than for the old school starters, making it a favorite of starter rebuilders.

[Jean-Seb]

Thanks for the reply, now I have a good excuse to leave it in the parts box. lol

I'll need to do the experiment if I ever do put it on.

[pounsfos]

high torque starter motors (or gear reduction starter motors) are mostly used in newer engines due to the higher compression ratios they have. makes it easier on the starter than an original one

[Old Mechanic]

Nissan was using them in the mid 1970S. Four cylinder was direct drive and 6cyl was gear reduction. Supposedly they like the gear reduction starters in drag racers. The direct drive ones would not hold up in the 6 cylinder cars for a long time.

regards
Mech