Petrol engines on motor boats.

[Hot Property]

Not to bad behind the windscreen but it can get a bit wet in the aft of the cockpit at speed.

Hope the sea trial goes well.....we bought back two more happy smiley faces today!!

Sea trial planned for Sunday

The boat looks in good condition and particularly the outboard leg.

The boat is afloat half the year and trailer stored in winter. From the sticker on the engine it may have been on the Thames at some point as I bought my bf135 from that dealer.

There are very few good condition outboard cuddys on the market currently and this looks quite modern too.

I did look at a Finnmaster 6100 last week but it had no service history for a 13 year period, not even a receipt for an oil filter...

Mrs HP liked the boat layout but agreed we'd wait until a better condition one comes to market.

Until, that is, we found the AMT......

 

[Alicatt]

On this note
Running the engine fan for a few minutes before startup is essential with petrol but do people run their fans with diesel motors in the same way. I don’t see anyone doing this in my marina.

When you switch on the ignition of the port engine on my twin diesel engined boat it automatically brings on the engine room fan

 

[DavidJ]

When you switch on the ignition of the port engine on my twin diesel engined boat it automatically brings on the engine room fan

Interesting
I wonder how many people just switch on ignition and go straight to start. The purpose is really to clear out the fumes first before starting
Is your fan on all the time when running?

 

[julians]

When you switch on the ignition of the port engine on my twin diesel engined boat it automatically brings on the engine room fan

My previous diesel engined boat didn't have an engine room fan. In fact none of the diesel boats (windy 25 and windy 37) we have owned had an engine room fan.

 

[DavidJ]

My previous diesel engined boat didn't have an engine room fan. In fact none of the diesel boats (windy 25 and windy 37) we have owned had an engine room

Ah! so not a marine safety standard then
Never quite understood it when there are a no potential sparks with a diesel

 

[Bouba]

Some diesel engine room fans suck and some blow

 

[Boathook]

Sea trial planned for Sunday

The boat looks in good condition and particularly the outboard leg.

The boat is afloat half the year and trailer stored in winter. From the sticker on the engine it may have been on the Thames at some point as I bought my bf135 from that dealer.

There are very few good condition outboard cuddys on the market currently and this looks quite modern too.

I did look at a Finnmaster 6100 last week but it had no service history for a 13 year period, not even a receipt for an oil filter...

Mrs HP liked the boat layout but agreed we'd wait until a better condition one comes to market.

Until, that is, we found the AMT......

The dealer is good. I've just purchased my third Honda from them earlier this year having worn out the previous 2 due to age and use.

 

[Hot Property]

The dealer is good. I've just purchased my third Honda from them earlier this year having worn out the previous 2 due to age and use.

"The power of dreams" according to Honda!

 

[Alicatt]

My previous diesel engined boat didn't have an engine room fan. In fact none of the diesel boats (windy 25 and windy 37) we have owned had an engine room fan.

Even my 45 year old Casper has an engine room fan for it's MD7A, there were different engine options for the boat so might be a standard fitment, although the only other two Placom 750s that I know of both had diesel engines

 

[boomerangben]

My Grandfather swore by petrol engines in boats. Not least because if it spilt, there was no stinking, slippery, oily residue left to clean up. Petrol leaves a (explosive) smell for a short while. But then again that was when petrol was measured in stars

 

[GrahamHR]

When you switch on the ignition of the port engine on my twin diesel engined boat it automatically brings on the engine room fan

We had inboard VP V8 5.7 petrol powered/ outdrive boats for about 12 years. Fuel topped up via 20l Jerrycans. Engine room fans run for 1 minute or so before engine start up. Common sense really. Maintained by me.

No explosions,

No fires.

No breakdowns,

No outdrive issues.

Then we bought a boat with a VP D4-300/ DPH. No explosions of course, very low cost to run it with the red diesel fuel as it was so unreliable and we could use it for so very few hours. Biggest financial mistake of my life.

 

[SC35]

I think you were unlucky with the D4-300.
I’ve run two D4-260’s since 2016.
Admittedly one PCU went bang, also cooling system cleaning was required.
But otherwise … they work: smoother, more efficient and less smoke on startup vs KAD.

 

[Hot Property]

Update.

Carried out sea trial on the AMT 200 today

Offer made and accepted.

Collect later this week. Photos will follow ..

Thanks CapnS, your information on the boat swung it for me ( and I received purchase approval from Mrs HP).

 

[Fire99]

Some diesel engine room fans suck and some blow

My engine room fans on my twin diesel boat suck the heat out after a run. The 'blowers' on my old petrol boat also sucked but were to extract fuel vapour from the engine area before starting the engines. Others blow air in for the benefit of adding a degree of positive compression to the air to aid engine running.

 

[capnsensible]

Update.

Carried out sea trial on the AMT 200 today

Offer made and accepted.

Collect later this week. Photos will follow ..

Thanks CapnS, your information on the boat swung it for me ( and I received purchase approval from Mrs HP).

Great! I know you will enjoy the boat.

On the starboard side of the engine is a flushing hose and weird connector. This doesn't seem to fit securely in the engine casing. Lots of comments on line but in practical terms it's odd but doesn't matter. I always give the engine a 5 minute flush after use swapping the end termination for a flushing adaptor. Easy with the engine fully tilted and wheel over to port. No need to run the engine.

Good sailing!!

 

[Hot Property]

Great! I know you will enjoy the boat.

On the starboard side of the engine is a flushing hose and weird connector. This doesn't seem to fit securely in the engine casing. Lots of comments on line but in practical terms it's odd but doesn't matter. I always give the engine a 5 minute flush after use swapping the end termination for a flushing adaptor. Easy with the engine fully tilted and wheel over to port. No need to run the engine.

Good sailing!!

Thanks for the tip

I had a bf135 and it sounds like the same arrangement.

Collection on Wednesday, back to base and quick oil, filter and impeller change.

I think the engine is mounted too low, lots of drang from the leg.

I'll check and if not correct, I'll raise ventilation plate about 1.5 inches above keel line.

It certainly didn't feel like a 40 knot boat on the sea trial but fouled hull, engine low and bimini up will all be factors...

Few photos attached.

 

[capnsensible]

Seems so familiar.

I generally trim the engine as much as it will go when throttle open. Not had 40 knots though. But what a fun boat!

 

[Hot Property]

Seems so familiar.

I generally trim the engine as much as it will go when throttle open. Not had 40 knots though. But what a fun boat!

It's a quality boat.

Just needs a good clean.

The AMT brochure states 40 knots with 2 up and the 150 VTEC..... Brave statement if not true.

It won't be far off, my cap camerat 625 WA with 135 Honda did 35 knots

The previous owner has replaced the cabin cushions and commissioned a new teak table which cost £800!

Photos of that to follow.....

 

[Bouba]

Thanks for the tip

I had a bf135 and it sounds like the same arrangement.

Collection on Wednesday, back to base and quick oil, filter and impeller change.

I think the engine is mounted too low, lots of drang from the leg.

I'll check and if not correct, I'll raise ventilation plate about 1.5 inches above keel line.

It certainly didn't feel like a 40 knot boat on the sea trial but fouled hull, engine low and bimini up will all be factors...

Few photos attached.

Before you raise the outboard....check how she handles in port....without anyone sitting in the back....a boat like that might be rated upto say 200 hp.....so manœuvres well with a lot of weight in the back....a light outboard might not grip as well unless people sit in the back or the leg is low. Of course I know nothing about your particular boat...but I have been in this situation before

 

[Hot Property]

Before you raise the outboard....check how she handles in port....without anyone sitting in the back....a boat like that might be rated upto say 200 hp.....so manœuvres well with a lot of weight in the back....a light outboard might not grip as well unless people sit in the back or the leg is low. Of course I know nothing about your particular boat...but I have been in this situation before

Before you raise the outboard....check how she handles in port....without anyone sitting in the back....a boat like that might be rated upto say 200 hp.....so manœuvres well with a lot of weight in the back....a light outboard might not grip as well unless people sit in the back or the leg is low. Of course I know nothing about your particular boat...but I have been in this situation before

Handling is OK but performance on the sea trial indicates that the engine is too low - the photo shows the saddle hard on the transom top.

When the engine was rigged I suspect the company doing it went for safety and kept the vent plate well below the keel line. They don't want customers coming back saying it ventilates in a turn. I had a Fletcher 19 sportscruiser and the engine was removed to clean the carbs. They put the engine back on 1 hole lower. It took 4 knots off the top speed in same flat conditions.

As the engine hit 6k revs at WOT I suspect the boat is under propped. Raise the engine, revs will rise, fit new bigger pitch prop, engine revs back down to 6k = faster boat!!

My mate used to race boats and he's quite handy when it comes to setting up engines/props etc.