does this sound right for a top speed?

[lakedog350]

ok for starters my boat is a 1989 checkmate spectre 20' with a evinrude 200 vro v6 has a 22 pitch raker prop on it. no jack plate or anything else on it....yet. i was on lake george about a month or so ago and with myself and 3 others and a full tank of fuel which is 29 gallons...gear for three people and my stereo at top revs, which i was informed was 5800 i topped out at 59.4 on gps. does this sound accurate and are there any little loop holes to make the engine quicker with out breaking the bank? thank you for help/ suggestions

 

[merc245]

sounds pretty much dead on!And a hyd jackplate would be the quickest and fastest loophole.

 

[lakedog350]

thanks...you know of anywhere that i can pick one up used in good condition that is reliable?

 

[Big Dave]

i really liked the cmc that we had but it was a little slow to lift

 

[merc245]

Over at screamandfly.com you'll find quite a few used go-fast goodies.

 

[JUPITER PULSARE]

sounds pretty much dead on!And a hyd jackplate would be the quickest and fastest loophole.

I agree. It sounds pretty accurrate. The Spectra is a pretty heavy hull but solid with good freeboard. I would add a 5" setback bracket and a hyd. jackplate to raise the motor...or just get a 10" jackplate. Make sure you have low water pickups and a water pressure gage. With the additional setback and higher motor heights you could easily see a 3-5 mph increase. A change in prop could also help.

 

[lakedog350]

my 22 pitch raker is running right at max rpms....i was debating on dropping down a pitch to give a few over revs cause 5800 is rated and obviously u can go over that....plus future plans are to drop a merc 225 but not for at least another season....was just on bobsmachineshop.com after i replace my reeds and do a exhaust housing swap and jackplate im assuming i can be up to damn near 70 with myself and one person with a 1/4 tank of fuel and a super clean bottom....that sound crazy?

 

[fast fun 2]

Let me know next time your on Lg, we can run for a while.

 

[daren34]

i'm not sure 200 hp is enough to get 70

but you are heading in the right direction

don't let anyone talk you into a nosecone til you start hitting 80

i used to turn my v-4 140 6700 rpm but had to rebuild every 2 to 3 years

i'm not sure how high you can turn your 200 safley but i would guess 6000 to 6300

daren

 

[WILDMAN]

You'll need a little more pitch and about 12"-14" of total setback. Raising your motor or a hyd jackplate will make no difference at those speeds. Don't waste your money. The setback and more pitch will probably make a difference though.

 

[themudshark]

I have the same boat hull was blueprinted by checkmate it has a land & sea jackplate with about 5.5 inches of set back running a johnson v-8 4 liter built by Baker marine pushing about 420 hp, 26p ballistic prop, nosecone, hot foot throttle, and seastar pro steering, top speed to date is 81.4 on gps.I was told by Kunkels marine to add maybe 2" more setback, and drop my prop to a 24p raker to get my rpms up to 6700, currently top rpms are 6300 and that is 81 mph. was also told I am at about the hulls limit.tops maybe I'll see is 85 with the prop and added setback. My boat starts to chinewalk about 75mph then smooths out but it took some seat time to learn how to drive it. If your not doing anything the end of June come on up to the rondack romp on great sacandaga lake,its a Scream & fly event and you will meet a lot of fast boaters and gain some valuable info. we will be there.:cheers