Amber Derv

Hi again and thanks Dr Bob. Just to add, unless the experts say otherwise regarding temps, I don`t think the 85 degrees is too excessive anyway, given the environment the Alt. operates in. Although my background is in vehicle diesels, in cars they obviously run at higher temps than our `slow` revving boats but are able to cope with the under-bonnet temps and are mostly similar to our boat alternators, bearing in mind diesels do run hotter, even with proper cooling, say 110 degrees or so. (cooling sys pressure increases boiling point), in a car down the m/way. You get cylinder temps of 3 - 400 degrees and blasting down the road at 100mph with the turbo whizzing away it can reach 800 in the cylinders!!! which the cooling sys takes care of. I know our engines in no way get this hot, but gives you the idea. This is all just conjecture if when you get an ammeter on your kit you find a fault. I am of the school of if it ain`t xxxx`ed, then don`t fix it! as well as it sometimes can be the silliest thing causing a fault before wading in with the spanners! Like they say about my old Triumph, `90% of carb problems are electrical`.

Hi All, just passing by looking at Alt. probs, as have had issues with a boat I am moving, (may start a thread on that). One thing that strikes me as to the OP`s possible `problem`, i.e. Start Battery Alternator getting hot. In the confined `box` of the engine `ole, and bearing in mind the Alternator draws air in from it`s rear, I notice the Alt. is positioned just below and in front of the ex. manifold/heat exchanger, thus probably drawing its cooling air from that area as opposed to the domestic Alt, higher and on the other side of the engine. Possible quick test may be run up and check temps. with eng. cover/boards up. Just a thought until the amps get checked. I have a Beta 1305 and the boat I am moving is a 1505, much the same as this but have not had cause to look/check Alt. running temps. (Hi to Snibs who worked next door to me for `Satan` and my Alt. on a previous boat was the `Delta/Star` mod he often refers to).