Endurance Racer/Long distance offshore cruiser

[Boatless-Again]

Does anyone have any info on the Audi diesel engine?

Is that a V8 or a V10? HP and RPM?

Also the VW marine is a V8, but what size is the V10 used in the Touareg?

[Cookee]

Originally Posted by Boatless-Again

but what size is the V10 used in the Touareg?

5 litre which would fit in the 10 litre class perfectly with two of them!

[Jon Fuller]

Remember that class's C, D & E are for mainstream production power, not modified or prototype stuff. C-Sport, B & A is where the proto stuff lives.

[Cookee]

Originally Posted by Jon Fuller

Remember that class's C, D & E are for mainstream production power, not modified or prototype stuff. C-Sport, B & A is where the proto stuff lives.

It is therefore a shame that they haven't turned the V10 into a production marine motor ....................... but if they did?

[Boatless-Again]

Originally Posted by Cookee

It is therefore a shame that they haven't turned the V10 into a production marine motor ....................... but if they did?

I think the V10 offers much more potential than the V8 engine. Could be a great offering.

[cfun]

See you posted on Offshore only about your new bottom as well, anyhow pun aside that's fantastic Cookee the boat does look great and that model boat really flew it was brill reminded me of the good ole British spirit in films like the dambusters trying things out first with models from the drawings (you weren't there at the dam busters were you) good luck with this project mid 70'smph from just over 500hp in a 34' boat has got to be pretty good going, like the Americans can't wait to see it in reality

http://www.offshoreonly.com/forums/g...nce-racer.html

Nice to see a few British projects with yours and Mike's in the process stages for next season

[Cookee]

Originally Posted by cfun

See you posted on Offshore only about your new bottom as well, anyhow pun aside that's fantastic Cookee the boat does look great and that model boat really flew it was brill reminded me of the good ole British spirit in films like the dambusters trying things out first with models from the drawings (you weren't there at the dam busters were you) good luck with this project mid 70'smph from just over 500hp in a 34' boat has got to be pretty good going, like the Americans can't wait to see it in reality

http://www.offshoreonly.com/forums/g...nce-racer.html

Nice to see a few British projects with yours and Mike's in the process stages for next season

Yes Mike has got a big head start on us, but we have the luxury of starting with a clean sheet of paper - of course it does mean we have to get it right from a standing start and Mike already has a proven hull, so the final result will be very interesting.

As far as speeds are concerned the advantage we have is surface drives which should give us a bit extra! We are hoping that one of Mike's boats end up down in "E" class - the more the merrier!

[jordaniel]

I know this is going to be a silly question to ask you guys but what is the difference between a car engine and a marine engine I just thought instead of a radiator you just suck up the water and through it back out sorry if this is really stupid i know im a

Ray

[Cookee]

Originally Posted by jordaniel

I know this is going to be a silly question to ask you guys but what is the difference between a car engine and a marine engine I just thought instead of a radiator you just suck up the water and through it back out sorry if this is really stupid i know im a

Ray

If you take the engine we'll be using - it's the 3 litre BMW motor - it is a wastegated turbo instead of the variable vane thingy in the car, mapping is different, it has a heat exchanger instead of a radiator (water/water instead of air/water), generally they may have different compression ratios, valve timings and all sorts of differences to the heads, cam etc as well.

Putting an aluminium block car motor into a boat and using it in salt water and pumping the salt water through the engine would end up with not much block left after a while!

[Jon Holmes]

I think you will find that most marine application engines will be fitted with inconel exhaust valves as opposed to steel as well as a different profile camshaft.

[jordaniel]

well thanks guys that clears that up am i right in thinking they have a closed water system then and the heat exchangers are what keep it cool and stop it overheating

Ray

[Tony Davis]

Originally Posted by cfun

See you posted on Offshore only about your new bottom as well, anyhow pun aside that's fantastic Cookee the boat does look great and that model boat really flew it was brill:

As good as it looks, I can't really see what relevance that has to a full size boat. I haven't had much time with RC model boats, but my limited experience has shown that they don't really perform like a real one.

Perhaps a scale model in a test tank at Southampton Uni would be of use, but chasing one around torbay or wherever isn't really that realistic, IMHO of course.

[glen76]

Originally Posted by Tony Davis

As good as it looks, I can't really see what relevance that has to a full size boat. I haven't had much time with RC model boats, but my limited experience has shown that they don't really perform like a real one.

Perhaps a scale model in a test tank at Southampton Uni would be of use, but chasing one around torbay or wherever isn't really that realistic, IMHO of course.

my life size grasshopper car made from a reliant never performed aswell as id hoped!!

[kitten]

Totally agree Tony. As far as realistic data is concerned It's pointless, even your uni test tank will not guarentee the results. The best you can hope for is a genral feel of how the thing will behave, genral ride ect, what you do have to do is take into consideration scale differences which are not linear such as water density drag and power, The best bit though is it's a good excuse to get out of the workshop and go down to the river for a play.

[Cookee]

Originally Posted by kitten

The best bit though is it's a good excuse to get out of the workshop and go down to the river for a play.

[Tom Stone]

for the hulls we all play with a test tank wouldn't give you any useful information, compromise between scale of model and the scale speed achieveable.

not even sure computer fluid dynamics would really work but its big money to find out.

[PerformanceDodge]

I'm experimenting with using the Mercedes 3 litre V6 turbo diesel car engine in a boat. It is an all aluminium engine and weighs in at 210kg. Produces 225bhp or 270bhp chipped. Going to use 2 heat exchangers, one raw water to sealed engine system and one raw water to sealed charge cooler system. Its a very compact engine. The exhaust manifolds are very small and double skinned so I am just going to use heat shields and glass tape wrap the turbo feed pipes, so heat build up should not be to much of a problem. The raw water pump I am going to use is from a 7.4 mpi, comes with V belt drive and should fit neatly where the air con pump was. The biggest challenge is going to be wiring the ECU as it is common rail fly by wire throttle system, may have to get the ECU de coded and re programmed. Should be interesting anyway, hope to have it installed and running for next season.

[Cookee]

That should be an interesting project - sadly we can only use production marine stuff I think, besides the BMW/Yanmar package comes out at 260hp standard and arrives ready to go - of course if you have the time and a good motor from a car then it's got to be worth a go - good luck!

[Jon Fuller]

Shame these blown V8 chevy diesels never seemed to get it right, they sound lovely.

The racket in the background before the engine starts is the truck ticking over behind me.

http://www.facebook.com/video/video....3936933&ref=mf

[Cookee]

Originally Posted by Jon Fuller

Shame these blown V8 chevy diesels never seemed to get it right, they sound lovely.

The racket in the background before the engine starts is the truck ticking over behind me.

http://www.facebook.com/video/video....3936933&ref=mf

Do they come in a marinised package?