Formula boats Pt2

[Col]

Further to the thread on formula's, is anyone tempted by this??

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[wakeup]

Fan Bloody Tastic, I want one of those.....

<hr width=100% size=1>As independent as resources permit.

 

[theguvnor]

Any guesses on fuel consumption ?

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[Kevin]

the new 312 about the same size boat, with twin 475hp engines is about 30 gallons per hour at cruising and at maximum 66 gallons per hour. should be quicker than 75mph, with twin 475's they hit that.

kevin

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[powerskipper]

Col you do have a thing about fast toys, enjoy /forums/images/icons/wink.gif

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Julie

 

[Col]

I reckon the bloke on the fuel pontoon would shout
" Turn 'em off mate and give me a chance to gain on 'em!!!"

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[Col]

Mmmm!! Quite so!!

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[Deleted User YDKXO]

Very very tempting. I'm always surprised how little these US muscle boats go for. Can the engines be LPG converted?

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[Col]

Conversion would be expensive with 4 carbs to feed

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[Kevin]

people are put off by the £2/300 an hour running costs over here, but then for a 14 year old boat its not too bad a price on what it cost new

IMHO to LPG these high performance engines is quite a risk especially on long term reliability. the lpg conversion can cause similar charactoristics to an engine that is being run lean as the lpg doesnt have the same lubricating properties as petrol, lpg can also cause some combustion problems all this can dramatically affect high performance engines in a way that perhaps in a normal engine wouldnt be noticable.

IMVHO I wouldnt lpg these types of engines due to their precise tolerences and immense opertaing stress

Kevin

 

[tr7v8]

There is currently a saloon racing at the moment on LPG. LPG has an octane rating of aroun 110 to 112 so in theory would be better for high performance engines than standard unleaded, although would need more ignition advance to do so. LPG behaves as a very unleaded petrol and hence must have valves & seats that can cope. I suspect any mixture issue have been due to poor inlet characteristics, some of the mixers I've seen don't look too scientific in design.

<hr width=100% size=1>Jim

Draco 2500

 

[Kevin]

Like you say perhaps the difference is is that if the high performance engine is built to run on lpg, with corresponding valves etc as opposed to run on lpg but not specifically built to do so. Im not sure i would want to bolt lpg onto an exsisting high performance engine without alterations it would be the lubrication and running temp issues on a non purpose built engine that would worry me, but if it was built to do that it is a whole new ball game in my view.


Kevin

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