Dorade boxes

spencer · Post by **spencer** » Jul 14th, '10, 20:55

Was curious about the dorade boxes and is it necessary to have with diesel power (315), presently rebuilding a 31, I personally like the appearance and see the benefits for increase in air volume, is there any negatives to them , such as more salt air/moisture, and or less strength to the hull.

thanks
Spencer

Marlin · Post by **Marlin** » Jul 15th, '10, 07:45

Craig the capts induction system is probably more dry than the factory system because of the drain system he incororated, I had a dude help me that could probably do yours at a resonable rate, let me know, u gotta go see my hardtop at palm beach towers, whats your status

Tommy · Post by **Tommy** » Jul 15th, '10, 08:14

Spencer,

Capt. Patrick and Bruce handled my repower with the 315 Yanmars, and they concluded that the B-31 factory set-up for air induction was sufficient for the Yanmars. I experienced no performance problems with the stock arrangement over the 9 years I had the boat. I believe I've read on the Board here that the Cummins engines require more air induction than the Yanmars.

Tommy

Harv · Post by **Harv** » Jul 15th, '10, 10:44

Tommy is correct. Yanmars can get by with stock intakes but Cummins do require more air.

Ironman · Post by **Ironman** » Jul 15th, '10, 12:07

Got no problem with air.. Ive got the Cummins 330s..turning up 2950..theres all kinds of nooks & crannies in the cockpit all the way back to the transom.. Ive sealed up alot of that factory "leak"with my new deck & doing away with the cockpit side boards.. still,.no problemo..
Wayne.

spencer · Post by **spencer** » Jul 15th, '10, 19:11

Thanks guys for the info,

Seems that it is not necesarry although it looks nice.

Tommy · Post by **Tommy** » Jul 15th, '10, 20:13

Spencer,

So, which diesels are you going with?

spencer · Post by **spencer** » Jul 15th, '10, 20:49

Tommy,

Im planning on yanmar 315, but Its way out, but somthing in that hp range, have not purchased anything at this point , just trying to plan for the future.
At the present the boat is stripped out and have had the engine beds reinforced, purchased some items from cabrerra , v-berth and the deck support kit, and I am having them installed, so was trying to plan if I was going to put them in during the process.
Cabrerra was against putting them in (the dorade boxes) so thats why I posted the question

Marlin · Post by **Marlin** » Jul 16th, '10, 19:51

what was cabrerra rational against there use

spencer · Post by **spencer** » Jul 16th, '10, 21:31

ialthough it was translated that the salt air could be easier to get to the motors or mist, I personally thought maybe a strength issue.

Brewster Minton · Post by **Brewster Minton** » Jul 16th, '10, 21:38

I have no boxes but mine leaks like a siv

Marlin · Post by **Marlin** » Jul 18th, '10, 19:37

when I cut them out, I was amazed at the thickness, 1/4 >, mucho strong hull and capy pat knows the hull integrity well

bertram31.com

Dorade boxes

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