T&T: Federal Law re Using Blower Before Starting Engine

[Bill Allen]

When I repowered the Topaz we ran into the problem of not enough air into 
the engine room. They put a manometer in there and there was some negative 
pressure and of course it was to hot for them. We had early valve issues 
with both engines (J.D.'s). I cut a few (four) more vents in, since the 
topaz doesn't have external engine room vents it took a little fooling 
around to get them in a good place. That took care of the pressure issue we 
also installed two new blowers one pulling air in one out, this seemed to 
help quite a bit tempature wise in the engine room. Of course when you shut 
the engines and blowers down it does get hot in there. The problem with 
thinking the engine intake will move the air is many times the heat, 
something diesels can do without. They like cool dense intake air to preform 
well. Bill
----- Original Message ----- 
From: "Rudy and Jill" <rudysechez at yahoo.com>
To: "John Buckwalter" <steam at usa2net.net>
Cc: <trawlers-and-trawlering at lists.samurai.com>
Sent: Tuesday, June 30, 2009 9:22 PM
Subject: Re: T&T: Federal Law re Using Blower Before Starting Engine


>> I don't know about your boat but my turbochargers suck
>> more air that my
>> engine room blowers provide.  In fact it is important