[TW]Fox;26670890 said:
Really not sure why you wouldn't just use a marine diesel for this?
Look at any of the old, time served fishing boats. Many of them had the BMC 1500 diesel (which you'd be horrified at - you don't get much more agricultural than those). Whilst noisy, they are supremely reliable and use very very little fuel. The same can be said for the Peugeot XUD lump. You had one of these engines and I know how 'bad' it is in comparison to a modern engine, but they are fantastic for boat use.
For me it's a question of money and I like to work on engines. I have and old bmc 1.8 engine and would like to use a more modern economic engine.
Most merine engines are start life in a tractor, van or car. And are then marinized for use in a boat.
We did get this sorted in the end. The transit engine went to the scrap yard in the sky. The 1800 BMC is nowhere near as economical as the 1500 BMC. My granddad whilst alive had a few different engines fitted to his fishing boat. The 1500, 1800 and 2200 varieties. He went back to the 1500 in the end as it had almost all of the power of the 1800, and liked fuel a lot less.
We had looked at fitting the 1.9 XUDT lump (turbocharged) instead of the XUD (NA engine) but decided that due to the size of the engine box that the turbocharged lump would suffer more with the increased heat. There was also the issue of cooling the charge as the xudt is set up to run with an intercooler (albeit an inefficient engine top mounted one as standard in the 306, or a front mount in the xantia).
I can't remember off the top of my head who made the conversion bits and pieces that were needed, but they were a well known company and I'll ask him when he's back from Greece for the info if you want it.
The engine runs fine, and we mated it to the typical run of the mill bowman heat exchanger. The sea water pump was connected to where the vacuum pump traditionally connected on a road use engine (right hand side of the head if looking at the engine with the fuel pump at the front).
This chap did a conversion as well, our final product was much the same but the air filter is not a cheap max power job on ours - to try and stop the engine ingesting hot air!.
I think you probably could marinise a turbocharged version, perhaps with a charge cooler should you so desire it. As you're aware though, the 1.8 BMC makes very low power compared to the 70hp provided by the Peugeot engine. We find the boat makes much better progress now, and the engine doesn't need to be worked nearly as hard as with the BMC!
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