So your boast will sit higher on the water for greater speed less drag?

Hi PhatboyC,
During the rebuild process i have been able to save a substantial amount of weight in the engine compartment, moving the engines closer together has allowed me to reduce the engines centre of gravity by 1.5" and at the same time decrease the X dimension by 1". I have also moved the engines forward by 5.2" as the engine and drive package weighs approximately 750 kg each this will move the longitudinal centre of gravity further forward as the boat previously was always a bit stern heavy.

Peter

Hi fatboyc

I tried those boxes on my 320hp cummins and they do absolute nothing not even in the higest setting we had added boost gauges to see what happend but it was nothing not even smoke increase . The told me that I would see a 50 hp gain for each motor , I tried it because they offered full funds return when not happy and the did .

Bor

Hi All,
I have finished the rebuild of the transom shields these have now been painted and the carbon cover plates fitted ready for installion to the boat, i have also decided to make some carbon fibre power steering oil coolers as the standard volvo units obstruct the water inlet flow and cause weed hangups. The electro-hydraulic pumps have also arrived for the dry sump system.

Peter

Some more pics

Thanks for sharing your experience. From what was said by you and peterunwin I am staying away.

Looking good peterunwin! Can I ask how much money you have invested so far in this project?

Thanks Very Much... as i do virtually all the labour myself i only have to buy the materials, i also sold the old engines which allowed me to buy two brand new 435 bobtails for less money than rebuilding the old ones to the new speck, so i reckon total cost will be in the region of £60000.00 and a hell of a lot of LABOUR!!!!! but i am hoping to market some of the special parts including the fly-by-wire steering system.

Peter

peter,

i'm ready to start upgrading my d6 350's . cant find anyone in the states that sells a plug in chip box or remaps ecu's. did you remap your own or can you recommend some one you trust ? i'd like a plug in box but haven't found anyone who has run a chip express ( or others ) that has had them work on the volvo d6's. looking for about the 400 hp mark with as little torque increase as possible.

then want to have the props worked on to get more top end out of them. i sure would appreciate any help .

p.s. let me know if your going to fantasy fest. we might take the boat down from naples, its only 3 hours.

I think 400HP is a little on the ambitious side bearing in mind your high ambient water temperatures so i would say 380HP is going to be top whack without changing the charge coolers. The 435 charge cooler will fit with some pipe work modifications and a new inlet manifold, the parts in England are not too expensive. You can also pick up a few horse power by removing the rubber bellows between the transom shield and the drive leg, not as good as through transom exhausts but it certainly helps. We can get your ECU'S remapped for you although i know we are a very long way away....
We are still contemplating coming out to fantasy fest and the world powerboat championships, we are also thinking of buying a boat to keep in Florida while we look for a house we just can't decide where we want to live there are just so many nice places...

All The Best
Peter