92 270 Baja Re-power & Updating Thread
 

So I started this project a while back (3 years ago and I thought I would finish it in one summer...boy was I wrong)and Im just now starting to post some pics of it. I have re-powered from the gen 4 502 to a 509 roller motor with a 1071Mooneyham blower, Lee performance intercooler, 2 1050 Dominators...ext. I completely removed the back seat, dash panel and all the stock baja gauges and threw them all away and started new. The pics start late in it the build but here it goes...
Goodies
http://i75.photobucket.com/albums/i3...t/CIMG0004.jpg

Pic new back seat and engine hatch
http://i75.photobucket.com/albums/i3...t/CIMG0020.jpg
http://i75.photobucket.com/albums/i3...t/CIMG0019.jpg
http://i75.photobucket.com/albums/i3...t/CIMG0018.jpg

More to come............

removed the dated stock dash and started installing my new one
http://i75.photobucket.com/albums/i3...t/CIMG0028.jpg
http://i75.photobucket.com/albums/i3...t/CIMG0029.jpg

I built a dash for the left side as well and Im going to join the two with a speaker panel that holds 4 6.5 speakers
http://i75.photobucket.com/albums/i3...t/CIMG0030.jpg

My dad had a '91 model 270 back in the day. I had forgotten about those footrests. Boat looks good, when's it going to be up and running?

I have a '92 270 that's all original except for the motor.

Can't wait to see the finished pics of your boat!

I plan to be up and running(testing it) in 3-4 weeks. my hatch and back seat will be heading to get covered today. I will be finishing my dash today/tonight and primering tomorrow.

http://i75.photobucket.com/albums/i3...t/CIMG0025.jpg

joe nice jop . i like wt you did to the back seat i am going to copy you on the setup thanks i got 3weeks before mine ready.

We'll be over for Contraband next week. May be back in August for the Calc boat club poker run, hopefully get to see it then.

I plan to be up and running in 4 weeks.....we will see. It's always something.

But yea that would be cool.....

Here is a pic from a few months ago when we just installed the motor....take note to the floor in front of the crank pully. The gas tank was removed and shorten 5" and the fire wall was cut and moved foward to be able to install the blower... In the stock app the wall was only 1" away from the crank pully

http://i75.photobucket.com/albums/i3...t/CIMG0068.jpg


I have everything plumbed with the motor in at this point and I will post some pics of that when I get a chance....

I gotta ask... Is that 8 holes in the seat for 6x9's?

Yup, There willl be (8) 6x9's, (8) 6 1/2's, (4) 5 1/2's, and (2) 12" subs...... 3 Punch 500, 2 Punch 300, and 1 Punch 120 amps on it....I kinda like my music

Nice job man!!!!!

So it looks like a few final touches on my windscreen conversion and if my painter buys off on my glass and body work its off to the booth this weekend....fingers crossed

http://i75.photobucket.com/albums/i3...t/CIMG0046.jpg

looking good whats the hp mine is going on the dyno next week 572 1071 shooting for 1150 to 1200hp builder is anyway since the last two were smaller in cam and heads and made 1137hp. I plan on extra pulleys to lower it I don't want to blow a new konrad ace drive:eek:. good luck !!

You have more ambition than I. :drink:

that firewall is a bulkhead did you glass and box it in so it still goes across but shaped like a 3 sided box if not you should do that and make a metal brace up higher going across since the motor sits on a angle, otherwise you could have flex issues. its going to be fast boat.

I notched it and glassed it all in, I didnt think there would be any flex issues with the solid motor mount support bracket being so close and is pretty beefy itself . Now that you have raised this interesting question I can have a plate cut to fit out of some 3/16 or 1/4 stainless and bolt it in... Thanks for the imput and I will doit, it will not take long at all. As far as horsepower I have no dyno time. I have a friend with just about the same engine pakage and he makes 946 at the flywheel but I will be tuning for 800-850 I kinda want it to last.
I know that this particular hull isnt that fast but with my last set-up I had 550+ hp, running the stock Bravo 1 and a 28p prop turning 6,200(drunk) on gps I was 72....Now in the mid 8's and I have a Bravo X drive, land & sea stern jack, w/a 33 Bravo prop.... Does anyone have any ideas on the speed b/c I dont

im interested to see how the windscreen comes out, its pretty close to what i am trying to do. i have a 89 sport 250 that is the exact hull that you have. do you by any chance still have the back seat assembly? i bought mine missing the entire interior and windshield. nice to see someone besides me building the same boat, yours is a bit more hard core then mine (for now). post some pics of the windscreen if you can

It's amazing how projects like this never seem to get done in the intended time :D. I'm in the middle of one myself but finally over the hump, pushing hard to at least be in by Memorial Day. Won't have the cabin done, but at least if its running, I can finish that over the course of the summer and I'll be happy.

I am also trying to get done for Memorial Day.....Right now all of my interior parts are at my upholstery's guys house and he couldnt be going and slower....when Im at his house im dropping comments like "have you ever tried Adipex?, they are soo good"......
I just ran all of my wires for my stereo, speakers, and amps. I installed my 2 12" subs lastnight and cut in and mounted my led Nav lights and replaced some of the Teflon skids on my trailer....Its funny how I dont have a single friend right now, but I bet they come out of the wood works as soon as im done...

speed I would say with 800 to 850 hp 90 to 96. I hope to get 150 to 200 hours out of my motor 572 blower was shooting for 1050hp but last motors dynoed were same as mine put smaller heads and can and hit 1137hp:eek:, so I will run mine a few times and them bring in down with a pulley change if its not getting used in the higher rpms. after the 200 hours Imight change it to a hdy roller set up instead of roller try for 300 to 400 hours. keep us posted. ps later on you could try a 2'' shortie or 1''. with a box on mine we raised the x to 18'' from 14 1/2'' = prop shaft height of 3'' to 3 1/3'' once the drive is on Iwill know for sure, I plan on using a 30 px5 prop for starters and have a b1 32 both are labbed for bow lift .

Nice work. You just glassed the black windshield screen in? pics after painting?

I did, and I built two dash pieces(one on each side) one being the gauge panel and the other for the radio side and Im adding a speaker panel across the middle that will tie it all in and make it solid and keeping the screen from flexing and should not have a problem with breaks or cracking....I will have pics up soon after painting is complete....Thanks

Well I picked up all of my speakers yesterday and Im short one amp still(damn slow shippers on E-bay) and I should have it in tomorrow if all goes well. I still have a little more body work to do on my windscreen but that will wrap up this week for sure. My motor hatch and back seat should be back from upholstery late this week..... Could see possible start up this weekend. For now it's gonna be a late night installing the stereo......It should make a little noise

2 Kicker 12's
8 Kicker 6x9's
12 Kicker 6 1/2's
http://i75.photobucket.com/albums/i3...t/CIMG0055.jpg
http://i75.photobucket.com/albums/i3...t/CIMG0056.jpg
http://i75.photobucket.com/albums/i3...t/CIMG0057.jpg

How many batts? I run 4 but only have 3 amps pushing 12 speakers. I would love to check it out when you're done. Gonna be a sweeeet ride.

what kind of box are you using for the subs and where are you mounting it?

Im running 3 batterys and 3 stiffining caps with a 130 amp alt.... I will have 5 amps total, 2 of them will be at a 2 ohm load and the others at a 4ohm load. It should work just fine with not to much current draw.
I built 2 12" sub enclosures with 1.35 cubic ft. of air space and they are mounted under the rear seat on each side firing inward. I drilled (6) 3" holes(3 per side) on the sides of the seat facing outward for the bass to vent out....I have done this several times before and it works real well, The bass sounds sharp and solid and you dont get all the muddy tones like when they are mounted out in the open. P.S. I was a installer at various car stereo shops for around 8 years back in the day....

You can see the boxes for the 12's in this pic behind the 6x9's board
http://i75.photobucket.com/albums/i3...t/CIMG0019.jpg
I will post a better pic tonight when I get off of work.

This may work or it may really not work. You just created a bandpass enclosure. There is alot that can go wrong in this setup. FIrst thing I see is you are going to be loading all those other drivers with the preasure from the subs. Second if you don't have the proper air space you can unload the sub driver real easy. 3 with a bandpass you can't hear when you are distorting the drivers.

Bandpass was huge in car audio for a while because they could make Huge SPL numbers, problem was that they were very limited in band width. They were a pain to get right in design because the driver almost never performed to spec. Customers blew up more drivers than I care to remember. The bandpass boxes were always pretty much a one note wonder. They would hit like hell at say 70hz but suck every place else.

I would really reconsider this design. You may have gotten lucky before and hit a good working setup. I can see you blowing alot of drivers with the way you have that bench laid out.

I don't like to say anything on threads like this, but I think you are really headed for a lot of trouble out of this system. Mixing 6x9's and 6.5" will most certainly give you phase cancellations. Having all those speakers down on the floor will pull your sound stage way down. It will be loud on the floor, but who lays on the floor to listen to the sound system. Infact it may even reduce your sound compared to just having the 6.5" in the cockpit area.

I would really consider turning the subs to face out into the sides of the boat and make a regular ported enclosure. The results are going to be far more predictable than the way you have it layed out now, and no risk of blowing the other drivers. Plus like I said I think you will get more volume with less drivers if you just get several sets of 6.5" up higher in the boat where they can be heard.

It's your system and please don't take this as any kind of bash. I just really think you could achieve a much better system, using less components doing it a differnet way.

I have setup systems with far less equipment that will rip your head off. Infact I just redid the Irish Tornado system with 4 sets of 6.5" in the cockpit, two 10" kickers in the bench and a 12" in the cuddy below the v-berth. The thing is painful loud. I only have two sets of 6.5" and three 12" subs in my system. I can run WFO and hear the system plain as day with open exhaust, and I can make ripples in the water with bass. I only have 3 amps and 200 watts RMS power.

Here is a short video of my boat running with the sound system playing. I was running 60+ and the system was turned up maybe 3/4's. http://www.youtube.com/watch?v=wB84t8z6_O4

No offense taken but I have had this set up before minus 4 of the 6 1/2's (across the front of the windscreen)and it got down pretty good even at wide open throttle....The 6x9"s will have a back board to keep pressure from getting to them and they will be crossed over around 170-210hrz. all the 6 1/2's will be crossed over much higher to prevent any bass from making its way to them.
1.35 cubic feet will work just fine for the subs... 1.50 would have been the prefered but I will make do, I think I will have enough power to compensate for the tiny loss of air space. Im not turning it in to a 7th order or a banpass box/enclosure by this set-up nor tuning it for any certin frequency by doing this. There are several places for the bass to escape other than the ports I have made, I will repost this weekend and let ya know how it turns out....

Overall, I understand his point. I definately agree that moving things up as high as possible will make a significant diff....JMO.

What are you planning on running for a drive? I hope it is a #6 because a Bravo will last about 2 seconds with that much power.

Bravo X..... for now anyway. I'm gonna run it for the rest of the summer and I'm putting if for sell (with less power)and I'm stepping up to a to a 33ft Cat.

any updates?

Wow please send finished pics to [email protected]

I have a 270 sport

..

so what was the final project like?? speed? PIcs???

i would like to see also, i am wrapping up my sport 250/270 build this year

yea, what happened a poject boat then SOLD !!!! Was it sold as a project boat or was it finished ?

Ahhhh....all that hard work and following w/no pics? I'm devistated to not see the finished product or in person @ Tickfaw! :)