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Author Topic:   V4 Fuel consumption

jgkmmoore posted 11-07-2006 04:41 PM ET (US)
I have an '82 1.6L crossflow 140. Later in the 80s, the 140 went to a 2.0L V4 looper (I am told).
Question: Do they both have the same mpg? Does 'Looper' technology cancel the larger displacement/weight? Are they BOTH thirsty? Any advantage to the 2.0 Litre motor in the mileage arena?
Teak Oil posted 11-07-2006 09:40 PM ET (US)
They are both thirsty.
The 2.0 looper is going to be more powerful than your crossflow because:
It has more displacement
It is propshaft rated, not crankshaft rated like your crossflow
Its a looper, which is a more efficient combustion method and makes more hp per ounce of fuel. It will also rev higher
Its also 60 pounds heavier which cancels some of the positives.

If your current engine is in good shape stick with it, the benefits of switching don't outweigh the benefits. Any fuel savings will be negligible
The Judge posted 11-10-2006 01:12 PM ET (US)
The 140 looper is not a great choice because they use the v6 gearcase which is heavy. A 120 looper would be better in my opinion. They are heavy though baout 380lbs I think and are half of a V8 OMC. Great engines though.

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Author	Topic: V4 Fuel consumption
jgkmmoore	posted 11-07-2006 04:41 PM ET (US) I have an '82 1.6L crossflow 140. Later in the 80s, the 140 went to a 2.0L V4 looper (I am told). Question: Do they both have the same mpg? Does 'Looper' technology cancel the larger displacement/weight? Are they BOTH thirsty? Any advantage to the 2.0 Litre motor in the mileage arena?
Teak Oil	posted 11-07-2006 09:40 PM ET (US) They are both thirsty. The 2.0 looper is going to be more powerful than your crossflow because: It has more displacement It is propshaft rated, not crankshaft rated like your crossflow Its a looper, which is a more efficient combustion method and makes more hp per ounce of fuel. It will also rev higher Its also 60 pounds heavier which cancels some of the positives. If your current engine is in good shape stick with it, the benefits of switching don't outweigh the benefits. Any fuel savings will be negligible
The Judge	posted 11-10-2006 01:12 PM ET (US) The 140 looper is not a great choice because they use the v6 gearcase which is heavy. A 120 looper would be better in my opinion. They are heavy though baout 380lbs I think and are half of a V8 OMC. Great engines though.