Winter modifications, who's tested
 

Anyone out there who has had an early sea trial after modifying the power? How did it go? Checkmate454mag do you have any water time with the 540? Does it feel like the same boat?

Re: Winter modifications, who's tested
 

man i wish i had a sea trial in. my boat is still in the barn.
todd

Re: Winter modifications, who's tested
 

Vinny said his boat will be in storage till May 1st. Mine will hit the water this weekend if the docks are in. Can't wait to test the shorty Bmax, maximus prop, 380S tabs, and GGB Mufflers.

Re: Winter modifications, who's tested
 

best i got is motor goes to dyno on monday!!! yeeehaaa!!!

Re: Winter modifications, who's tested
 

We did not modify the power this winter, a little slim on funds. However, we did buy some new carpet for our 2000 259 Convincor and opted for the lay in style (from Checkmate) as opposed to the snap in that came with the boat. Does anyone have the lay in style carpet sold by Checkmate? If so, how do you like it?

Re: Winter modifications, who's tested
 

I can't wait till May 1. This bit of warm weather here is making it difficult but I have no choice. I will post results as I get them.

Dave,

I know what you are thinking, but take it easy on me anyway.

Re: Winter modifications, who's tested
 

well got the boat out with the 502 in it, ran 71.1 best on a cool day!!!
i think i need to get the prop(s) figured out, tried 3 different ones with no favorites as of yet!!! this is a 242 convincor, anyone ever weighed their boats, brochure says 3900 lbs., just wondering how much fuel and gear adds up. looking for 73-74 and gonna get it somehow!!!!! :D

Re: Winter modifications, who's tested
 

Is the 502 stock are you pushing 415 horses
Im running around 450 horses in my 242 with a bravo one 26 but changing soon to a labbed 28

Re: Winter modifications, who's tested
 

I was able to really open up my new 496HO this past weekend for the first time. I was testing new props at the same time on my 1992 230 Enforcer and I was dissapointed in my top speed because of a severe chine walk. Regardless of the type of prop, the boat violently bounced from side 2 side at 73 GPS. I guess I'll try adding external steering to see if that helps.

Re: Winter modifications, who's tested
 

External steering will solve that problem. After 70mph anything less than full hydraulic steering will not cut it, and is not very safe. Be careful until the new steering is on.

Re: Winter modifications, who's tested
 

mboger,
my motor dynoed at 558hp, with great torque numbers.
i spin it up to 5600 to get the max hp out of it. the engine is built for it so im not too worried.
i was able to spin a 25 but not get the speed, it was labbed and slipped over 20%. im still testing.....

what was your best prop?? let me know if you want to sell that 26 bravo, i have a friend interested if its stock and you want to sell!!!

kevin

Re: Winter modifications, who's tested
 

mboger, send me an email at [email protected], id like to talk about the boats, ill give you a phone number.

kevin

Re: Winter modifications, who's tested
 

Checkmate 454mag talk to us. What do you think of the new power? Sounds like the re-powering process had a few curve balls thrown in. Give us the good, bad and ugly in upgrading your 454MAG to a 540 monster motor.

Re: Winter modifications, who's tested
 

Well it has been a battle, but I think I am getting a handle on it. To start with, I had a real bad case of reversion with my Gil manifolds and pipes. They didn't make it past the first run with the 540. So, I got a set of CMI elbow top headers and wet tailpipes. Getting the headers or I should say tailpipes proved to be a very difficult thing to do. The order got all screwed up with CMI. Eventually the tails came and guess what....THEY REVERTED WATER... Not as bad but they still reverted. I did run the boat because the reversion was managable. I just kept the idle up , no water made it to the heads. But to be safe, I ordered a set of fully dry tails. I just got them on this week. All I can say is it is LOUD!!!! If I don't get bothered by the police, I can live with it. But, I did say if. I think I am going to get nailed for noise. I have only 1 test day with the dry pipes. Anyone looking for a very slightly used set of wet CMI tailpipes or a set of Teague ST-450 switchable tips????

As far as performance, I am still trying to get it dialed in. I have played with a few props. The one I am running now seems to be O.K. , but I only ran it 2 times. I have a labbed 25 Hydromotive P-5X. Throttle-Up did the prop for me. Mat dropped the pitch to 24". I have spun it to 5650 r.p.m. @ 78 mph on GPS. Speedo said 85 mph. That equates to only 8.25% slip. Pretty good #'s. However, the 2 times I ran this prop were not under good conditions. The first was the NYC Poker Run, which ended up ( as usual) to rough for me to run fast. The ocean ride to the city and back was a bit of an ass kicking, not prudent to open it up. Then this past Sunday after installing the dry tails, I went out. The ocean was too rough again and the bay was either too calm or full of fisherman drifting through the marked channels. And they look at me when I go blowing by them. They should not be in the channels drifting. Thats another story. So, for now I would say that I have definetly run 78 mph on GPS. I don't see why 80 will be a problem with better conditions. I hope to get a better weekend next time out.

Re: Winter modifications, who's tested
 

I might be interested in your used exhaust. How much do you want for it?

Thanks,
Russ

Re: Winter modifications, who's tested
 

Russ,
I just want to make sure we are talking about the same parts. I have a set of Gil Manifolds and risers, a set of very slightly used CMI wet tailpipes for a stock Bravo application and a set of Teague ST-450 Switchable tips. Which are you interested in?

Vinny

Re: Winter modifications, who's tested
 

Vinny I'm sorry I thought you had a set of CMI's for sale. Not just the tail pipes. I'm looking for the exhaust also. I have the gils on my 240 Baja and would like to try tube exhaust on the Checkmate.

Russ

Re: Winter modifications, who's tested
 

Keep us posted with additional speed runs. 80mph in a single engine 26 ft non-stepped V-hull is impressive. Sounds like you learned alot in the re-powering process as well.