88 242 question
 

Hi everyone
I got a 242. My question is I am in the process of building a new engine I had the 454 mag in it. I am buliding a 540 with around 645-655hp I am wondering if anyone one the board can tell me what speeds I will see out of it? It was to slow with stock power. I have a bravo drive which is going to be upgraded. I will post pics also soon

Thanks

There is a 242 on ebay for sale right now with a 502 running a small blower. The guy said it is making 600 hp and at WOT it is running right at 70 mph. So if this it true then I would guess 72-74 mph???

Again that is just a guess as I do not know the guy personally so I don't know if his boat is actually 600 hp or 70 mph....

I would agree with that low 70-75mph would be right. There were a couple on here that made over 550hp if I remember right and did just about 70. Remember that is a good speed for a hull made over 20 years ago, low x deminsion, 24 degree hull and a hook in the hull built in. This boat should ride very nice.

I have a 242 ls with a 509 bbc, going thru an alpha, and it has seen 75 on gps with 1/4 tank of gas and no gear with a 23 pitch mirage plus with a blue printed bottom, alpha FTW!!!!!! its faster than my buddys 271 with a 502 and fathers 302 sr1 with 496s.

What kind of power are you making?

Built a 496 making 620HP in mine back when I had it. Top end was 71 on GPS with Bravo X upper and Imco XR lower. Had the hook taken out of the hull. Cruising speed improved but top end did not.

This is rather interresting, I know of verified speed of 61+ mph with a stock 502 mag Bravo1. I am not sure if that engine used to have 415
or 425 hp. Then you increase the horse power with 50% to 620 hp and a better drive line. The result is 10 mph???? I would have been rather disapointed.

What kind of power to reach 80 mph++`????

Chewy, I knew someone had taken the hook out of the bottom, so know real change. That is a great step up to a TG maybe some day:drink:

Alot, unfortunately these hull are notoriously slow!!!! Most of the earlier formulas are.

People say Bajas are junk but all I have owned were pretty easy to get moving with decent power.

I am buying a Formula 272 though. I feel that the lack of speed is made up for in solid quality!

mid 500's

looks like its time to build a 700sci for my 271!!!!!!!!!!!!!!

86242, Do you have seperate cooling raw water pump for your 509 or do you just use the alpha.

Thanks

just using the alpha for now, I plan to upgrade to a bravo setup at some point $$$$....

Maybe then it will break the 70mph mark lol!!!!!!

Its already broke that...

I agree with the others that you should see low to mid 70's. I have around 525-550 hp and I see 65 mph in chop with a mirage 21 non plus that is not in perfect shape.. With the prop dialed in I should be around 67-68. Great boat, it just takes a lot of power to get moving fast.

86242ls Where do you run?

Hillbilly heaven FOX LAKE, IL

Hey I run out there to. What colors are your boat? I have a 233 with a 632ci in it . with a bravo The best I can get is 77 gps. I did the transom change over from alpha to bravo after I wiped out two alphas. The boat was scary I did a full hydraulic setup with a box on it now. Its much better

What rpms are you turning with that 23 pitch prop. IMO it takes a lot more power than mid 500 to get to 75 in a 242. I have between 525-550 hp and I'm only getting 65 mph via gps?

I used to see 67+ on GPS speedo with a labbed bravo 24P, 4 adults and a half tank. I'm told the motor is putting out just south of 500HP, but never saw a dyno.