Da*****rcury
Is this what you speak of....:) I must say I loved the boat at first with the quads, looks we're hard to beat, boat ran 137mph and consistently 130 ish, sound at WOT was insane and sounded like a small fleet of champ boats. The downside for me however outweighed the positive. Fuel consumption was very high, was not pleasant in the ocean, needed 80-82mph to "pop". If I was running mostly inland water I probably would have kept the quads but that's not the type of water we ran in. The boat was 100% better with the twins
http://i433.photobucket.com/albums/q...ps8e485ce6.jpg

My 32a had triple 300's when I got it, eventually repowered w/2 300xs's. much better overall boat.

Three years ago when I started considering a build to replace my 28' the 32B flat deck with triple 300XS or twin DBR highly modified 300Xs where my first choice for power. Pete loves outboard boats but hates triples. He made it very clear he did not want to build a triple. Next we looked into DBR mods but Dave got hurt so we went with inboards and a 338 build

Now I've come back full circle to what I grew up with and could not be happier. I cannot believe how well the 308 runs with stock 300XS and the fuel economy it's nuts compared to a 300X. Is it a 28 with the acceleration and speed? No but I can't wait to see what she will do in some serious water. It's a tank with the huge tunnel.

So..... With triples out then who has modified a 300XS and what works? Definitely the billet seal kits and vent are on the to do list. How about DBR kits. Who has done one and what's the performance and reliability? Advantages disadvantages? Any others out there like Simon and Diamond doing 300XS mods?

Is a 110mph twin 300XS 308 or 32 build possible?

Does anyone have more photos of the flatdeck with triples? I've seen a few small photos of it, but never any decent shots.

I think 110+ is possible:

[Reference: Offshoreonly; "Mixing in Some Pleasure"]

"...the catamaran recently ran 107 mph without any dialing in or prop testing, according to Ballough."

Note: his 32 is all carbon, cut low, wide body

http://www.offshoreonly.com/articles...-some-pleasure




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I took the counter weights off, removed the silencer foam under the cowls and had Rapair flash my PCM's. Couple of MPH faster and a noticeable increase in acceleration

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tzr, would you have pics or a thread , would luv to learn

Noli
Yes just follow this thread

Noli, some other mods I have done.....,I did the Wayne Taylor, vertical and shift shaft billet bearing seal kit, keep it sealed down and check gear case lube, every time after a weekend run , custom exhaust tuner,it added some power and....my 300XS sounds a lot better....not as good as my 2.5s sounded,....but definitely better sounding than stock 300XS. Bumped up the rev limiter, still reving in factory specs . Lightened Flywheel, crossover for water distribution in turns, and custom side water dump to avoid water back spray on motors. And as Paul said removed the foam insulation on top of the motor.

Paul, I really liked your 32b quad set up. Just wondering
What where your rpm, prop pitch and gear ratio running at 137 ? I'd love to know more about what the prop shaft height and engine spacing too if you don't mind sharing :)