Checkmate speeds
 

I'd like to know what top speeds owners are seeing and what their models and configurations are. Sound off! :food-smiley-007:

old boat, 99 ZT 280 500efi bblades labbed 26 bravo = 73 gps

My old 1998 Convincor 253 w/502/415 ran 70 mph with a lab finished Mirage 25 under perfect conditions.

1995 283 Convincor with a full "weekender cabin" 525sc spinning a stock 26P Bravo 1, 70.5, Best run was 71.5 with a labbed 26P B1. I tested with 65-75 gallons of fuel and 2 people onboard.

2000 259 Convincor 72mph GPS with low fuel and 1 person on boat (454MAG 461HP 26 Bblades labbed prop). I am looking forward to seeing what this boat will run w/ 600HP. Hopefully we will find out in 2009!

I have a '99 259 with a 700+ hp 540. I can run 85 with the right conditions. Running a -2 Imco, spinning a 25" P5-X.

waaaayyy slower then most
1988 checkmate enforcer 24 , mild 454 , lil over 400hp , running 67.1 with a 23 mirage plus @ 4900 rpm , and 63.8 with the current 25 mirage plus @ 4200 rpm
i prefer the 25 pitch cause i cruise alot and love 3k rpm and 41-2 miles an hour , the fuel gauge never moves :)

92 Enforcer 230 w/496 Mag HO. 75 GPS before severe chine walk stops me. 28 bravo 1 prop.

My buddy has a 240zt sport. Fuel inlected 454mag with Stainless Marine exhaust. 23p mirage-plus, It'll do 67-68 anyday, best 69.6mph. super reliable and he can pull it with a 1/2 ton. He loves it!
Scott

2001 300 Convincor....fast:)

LOL No details?? :cool-smiley-011:

Great info so far! Keep 'em comin'.

I plan to enter the LOTO Shootout next year. Maybe we can get a decent Checkmate showing? :musik010:

2001 convincer, 502 560 hp, stainless marine exhaust, 26 bravo labbed, 73-76 gps depending on conditions. fast hull. will need to add xternal steering over the winter. dancing on glass at high speed:cool:

Dean is running the 28 that was in the magizines with twin 300 outboards and is running mid to upper 80s

Thats a convincor not a ZT.

Well over the century mark with a custom twin turbo motor and a #6 drive, Bill has a very beautiful boat!:eek:

Sorry about that, I couldn'tremember wich it was.
Scott

:eek: Sweet. That is badarse. Pics??

All white with purple and white interior, very classy!

mine will just kiss over 60 mph fully loaded with 2 people (weekend trip loaded)
its a 26 zt, 2003 with boan stock 496 mag. i love the boat but wish it was atleast an HO.

oh well.
im going to put new tips on it, a lab finish (still 4 blade) and a few small tweeks. i think cool weather less weight 63-64

dream o meter reads 70 tho. lol

1988 251 convincor, 509, 250 B&M blower, still testing and tunning, 81mph so far and havnt had it WOT yet!! 28P bravo 1, adding single ram hydro steering today...

1994 21' Pulsare/1995 Mercury 225 Xri, Bob's Hyd. Jackplate, 7.5" setback, SeaStar Pro Hyd. Steering, Mercury Trophy Plus 26, 2 adults, 1/2 tank of gas, cooler and gear,
74 MPH

speed
 

1988 Maxxum 281, 496 HO, 23p mirage plus, four people half tank gas, 61.6 mph..owned the boat since 1991...

2000 ZT 260 with the 7.4: The gps showed a speed of 71 one time but I have never been able to get back to that speed. 67-69 is where I can get it to now. Winter is almost here for me and will have some things done. I would like to see 75.......

1994 283 454 mag built to 520hp 72gps



Hail to the 385hp 454mag a little over 1500hrs yes 1500hrs befor it blew:cool:

what is done to that motor?
any pics of the boat etc? i have an 03 26 zt

I have not done a thing to it, except change the exhaust manifolds. Nothing special, I think they are "GLM" alum ones. I bought a set off of ebay, for I think $500. The 67-69 is what I have run this year on a lake. Last year, late sept is when it ran 71 on the South River here in MD. We were coming back from the OPA Races in Cambridge. The river and actually the bay were both flat. When I looked down at the gps , as we were half down the river, it showed 71. I was cheating some because there was a very, very, very good driver at the controls. Former race driver. He was with me for the day to try and help my driving skills.............I do not know much about gps. I have been told that they are accurate. It just seems no matter what I do now, I can not get it to that speed. Not that I need to. I am fine going just over 60. In fact, I think the boat acts best at 45 -50. Where I do most of my boating, 45-50 is plenty fast and can sometimes make me the "big dog". I was only able to get out 5 or 6 times this year. Boating is just about done for this year, since my son is in fall sports. My plans have always been to upgrade to a 502. I have toyed with the idea of a 500efi but I really do not need it. This winter I plan to explore looking for a 502. I want something reliable, ploished everything. I will see how it goes. Overall I love the boat for what I do.

the Choptank river has a nice current towards the bay when the tides going out , added to the bouency of the salt water , i suspect that is the 2mph that you havent found before , still faster then my check , kudo's to you , till i get my blower :evilb:

this post makes me think, somthing is wrong with my boat??

im 375 hp, you must be the 385 right?

so 10 hp, same boat (pretty much) and your 7-9 mph faster then me?
i was out last night bymyself 1/2 tank of fuel and the best i saw was 60.6 i was 60.3-60.5 the hole time. i messed with it 30 ways. i wonder what it is?

i was saying that to a buddy, i said, i think somthing is up with the boat. it seems to run fine, but the speedo used to read like 70-72 now its around 54-65

is 60 mph off for the boat?

I know what you are saying. I did see 71 now I can't get it that fast. I do have the 385. I figure after the plugs are changed and I put high test back in it, I should see 71 again. Where I boat now only has regular gas. They do not even offer a "plus" gas. If mine was off as much as yours is, then I would think something is wrong. What rpms can you get to?

Enforcer, what you said in your post, is what has been explained to me before. Somebody told me it was running "downhill"????? or something like that.

Or did you mean ( The Fastest Checkmate ) ? :eek::drink:

i run it right out to 4800-5k on the stock tach.
seems like somthing is wrong if your 10 kore house and that much faster.
whats your boat weigh?

I think I weigh around 4500???. The weight has to be close to what your weighs. Did you read the post by Enforcer? It makes sense as to why I have not seen the 71 again. It does sound like somethig is wrong on your end, if you are running it out to 4800-5000. I can't believe the manifolds that I installed could make that much difference. I will need to check what size prop I am running. I have will not be able to find that out until next week. The boat is still in PA at the lake. Maybe the 10 extra horse power makes that much difference.........

i know im told that the 496 has some restrictor in the manifold thats good for maybe 1 mph, and it comes with the nice elbow style in place of the old 454 flat style, but i dont know.
its strange. id like to get a weight of the boat and see, the boat spends all summer in the water, i wonder if it soaked some water into the hull and is now 5000 pounds or somthing?

I saw your post in the genral forum. Yes, i am running a 3 blade. I am fairly sure it is a 23. I am trying to find the one prop I have laying in the garage. It is is the 23 then I have the 25 on the boat. But with the speeds I have been able to get, i am fairly sure it is a 23 3 blade mirage. I don't know if that helps you any. I am actually thinking of putting a 4 blade on for next season but all of this talk is having me doubt that........:drink:

I know a guy with a 97 or 98 25' Checkmate - Convincor.
Stock carbed HP500 and standard bravo. He said it ran 80 on gps.
This thread has me scratching my head.

Was he bsing me? How much does a 25 Checkmate weigh and how fast does it truly run with an HP500?

He should be right around 70mph, to get 80mph its more like 650hp....

Find out what pitch, drive ratio and rpm he's running and that will tell you..

B S

Absolute BS!! It took me 720 hp to get to 85 mph. Even then, condition and load have to be perfect to get 85, more likely, 83 is achievable.

LOL. Guess I was a sucker. thanks for the info.
If I'm ever out on his boat again, I'll bring my gps and set the record straight. Great boat though.

72mph in ideal conditions. If another person is in the boat, water is flat, air temp above 85, etc the boat is running in the upper 60s. I agree with Vinny and some others 80mph with a carbed HP 500 is on the optimistic side.