Offshoreonly.com - 3" RISE Extension box

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@activatorf1, what power are you running, and what speed and revs?

@laxbaja, congrats! Hope you find what you´re looking for. Did I miss something? Did you fit the extension box? level or 3" lift? What is your propshaft to pad dimension, now?

5100@80 mph . Propshaft is 1.25 below a very , very tiny delta pad . It never blows out and can start out with trimmed out

11% slip is an amazing number for such a high x. I thought that an x like yous only works on 90+ rigs. What weight does your boat have?....and what power?

I'm considering the extension box deal -possibly next year sometime.
I don't want to raise the motor though. I was thinking a straight extension box with no rise, combined with a 3" shortie. Seems like a more simple swap. (less work and fabricating).

Could also switch to the sportmaster lower.

Everyone says the sportmaster lowers don't do much until your into the 90's, but my experience with outboards saw a speed increase in the upper 70-80 range. Was a very lightweight (and massively overpowered) boat, but the speed increase was significant -2-3mph+. It's hard to believe a nosecone or sportmaster wouldn't result in at least some gain on the baja.

Quote:

Originally Posted by LAXBAJA (Post 2299553)

I finnally finished the the boat, Im going to post some pics this week, before it goes back into storage for the winter.

i went way over board and pulled all the stock rubber hose of and put all stainless braided lines with AN fittings on everything.

diamond plate aluminum (thanks wildcard) on the floor, new carpet, all aeromotive fuel system, hardin marine billet water pump, full twin ram hydrallic steering, two chrome coolers that cool the engine oil, drive oil, power steering, and the fuel.

It has been alot of work but it turned out very nice.

not to mention the $22,000 it cost to do it all (parts only)

Now the question is, HOW DID IT PERFORM??????????????

Well i'm not sure yet, 100 new fittings and alot of leaks to tend to.
Flirting with fuel pressures.
Differant props.

and now its going to get down in the low 40's this week, kind of put a damper on working the bugs out.

But it is faster, how much is yet to be determined.
I'll post some pics soon.

what box did you use? a 3'' plus a shortie, I told you my ol worked good with a 2'' shortie, my height was 7'' before and now 5'', I might put a box on this winter but hate to recut the hloes again did it once:D well at 40 out it should run even better.:D art for props see BBLADES there the best

2'' shortie 670hp 83.2gps ran out of prop at 6000:Drpms but the dry pipes sound nice at 6000rpms. well what box did you go with and what drive a shortie?? pics pics, oh congrats Iam thinking of all so painting my ol this winter something wild if I come up with the money. art

I wish someone would try the box on a 24. I hate to be the guinea pig. Wildcard loves his but a 25ol is a very different boat than the 24.

Quote:

Originally Posted by 320es (Post 2302233)

I wish someone would try the box on a 24. I hate to be the guinea pig. Wildcard loves his but a 25ol is a very different boat than the 24.

laxbaja PUT A BOX ON i THINK, I have a 2'' shortie only and that gained 3 to 4 mph, so I hope we see some pics here which box, art