AQ211 a fuel consumption

[ian38_39]

This is probably a non starter but, I am looking for a Sealine 305 and strugling to find a decent one in my budget, wanted deisels but as an interim was thinking about one with 2 petrol AQ211s in.
Does anyone know what the fuel burn on these monsters is at full chat, cruising and just over tickover for river use.

Ian

 

[Questor]

Cue Isis7

I think he has these lumps in his, and spends most of his time cruising at 6 kts on one engine.

 

[DAVIDO]

I beleive its roughly 1gph/15hp WOT. So it can only get better from there.

 

[ian38_39]

owchhh thats £140 per hour with the sticks forward, /forums/images/graemlins/shocked.gif

 

[ianduff]

As Questor says we have a Sealine 305 fitted with twin AQ211/290SP. We have owned the boat since new and have done about 9000nm.
At 1200rpm on two engines we use 3 gph at 6 knots. One engine at 1400 rpm gives 6 knots at 2gph. A reasonable cruising speed is 3400rpm giving about 22 knots at about 15-16gph. When the boat was new we could get about 32 knots at 4400rpm and I estimate that the consumption would be about 30gph (we do not do this very often!). Our overall average is 1.65 nmpg.
I think that the petrol engines make a lot of sense in elderly boats like this because of the lower repair and maintainance costs. We have suffered from one major engine problem. The starboard engine was raw water cooled (port is fresh for the domestic hot water). After 18 years of salt the starboard engine corroded internally. I fitted a replacement supplied by Keyparts and converted it to fresh water cooling.