1999 266SC Big Block Etec 200's prop help.

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Elvira
Posts: 34
Joined: Sat Dec 22, 2012 9:39 pm
Boat Year: 1999
Boat Mfg: World Cat
Boat Model: 266SC

1999 266SC Big Block Etec 200's prop help.

Postby Elvira » Thu May 24, 2018 7:18 am

I am running 200 Big block etec on my SC and I am spinning 19 Pitch Rebel wheels. My max RPM is about 5200 at 42 knots. Cruise is about 27-30 knots at 3600 and economy is usually 1.1 -1.2 nautical miles per gallon whether I'm loaded heavily or not. I keep seeing all kinds of post where people are getting 1.6 - 1.8 MPG and its driven me nuts. On paper my props are giving me a 0% slip but need to be in the 6000 Rpm range WOT
My runs are usually 100 each way to the stream and I am usually just running at cruise. Am I overthinking this or am I missing out on some economy somewhere? Every mile of range I pick up will give me a little more piece of mind.
1999 266SC, 200 H.O. eTec's, Dual Garmin 8212's, GSD24 w/TM260 Ducer, GMR604 xHD, AIS600, Reactor Autopilot with Smartpump, GXM51. JL Audio MHD900/5 , 2 pair of M770's and M10IB5 sub. TACO Grand Slams with 21' bly carbon fiber riggers and center rigger.

SeaBiscuit
Posts: 275
Joined: Mon Apr 04, 2005 4:22 pm
Location: Destin, FL

Re: 1999 266SC Big Block Etec 200's prop help.

Postby SeaBiscuit » Thu May 24, 2018 2:06 pm

I believe I would experiment with some different props if my max RPM's were 5200. I guess that is in the acceptable range, being over 5000, but, it is pretty close. Also, if you are only getting 1.2 MPG that sounds a little low. I would expect at least 1.4 at cruise.
You might contact Ken at PropGods. You can google him or go to other sites like the hull truth to get his contact information. My guess is he will tell you that when it comes to Cats, it can be hit and miss, but he will have some suggestions and you try different props for the cost of shipping plus whatever he now charges. It is reasonable and he is knowledgeable. I bought props from him a couple of years ago.
Also, if you are getting zero prop slip it sounds like some numbers are not right. That, I think, is almost impossible, but, I'm no expert on props.
2008 270SF, 225 Yamaha's,Simrad NSS12-EVO2, 4G radar, B175M

Elvira
Posts: 34
Joined: Sat Dec 22, 2012 9:39 pm
Boat Year: 1999
Boat Mfg: World Cat
Boat Model: 266SC

Re: 1999 266SC Big Block Etec 200's prop help.

Postby Elvira » Thu May 24, 2018 8:37 pm

Thanks for the reply. I actually got the zero slip number from Ken at Prop Gods. Hoping for some replies with different experiences as well. I agree my economy should be much better.
1999 266SC, 200 H.O. eTec's, Dual Garmin 8212's, GSD24 w/TM260 Ducer, GMR604 xHD, AIS600, Reactor Autopilot with Smartpump, GXM51. JL Audio MHD900/5 , 2 pair of M770's and M10IB5 sub. TACO Grand Slams with 21' bly carbon fiber riggers and center rigger.

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jeff6513
Posts: 213
Joined: Mon Dec 26, 2005 6:25 pm
Boat Year: 99
Boat Mfg: Worldcat
Boat Model: SC
Location: Little Egg Harbor,NJ

Re: 1999 266SC Big Block Etec 200's prop help.

Postby jeff6513 » Mon May 28, 2018 8:50 am

El,
I had the exact same motors ,and same WC.....I tried many different props,and also spoke with ken,and i ended up using rebels with 17 pitch,and I believe I had them worked for a little less pitch....cant remember,but I could turn 5800 fully loaded trimmed out.
My mileage was around 1.4 at best.My mechanic /dealer told me I would not get very much better because these are high performance motors,and he said they are what they are.I tried 3 different heights also,and ended up with Cav plate being about one inch above bottom of hull,and as you are running in trim position you can see plate just out of water.
The rebels were the best prop,and always stayed hooked up,and had plenty of available adjustment(trim).....
I also used powertech 4 blade OFX....I believe it was 14.75 inch dia......very smooth,stayed hooked up plenty of trim.....but the ride was not as good....that was my opinion anyway,hope this helps....

jeff
"Killin Time",.... 1999- 266 SC,Twin Yamaha F200 I4's)
Simrad AP/ Furuno 1870 /Furuno Radar

Elvira
Posts: 34
Joined: Sat Dec 22, 2012 9:39 pm
Boat Year: 1999
Boat Mfg: World Cat
Boat Model: 266SC

Re: 1999 266SC Big Block Etec 200's prop help.

Postby Elvira » Tue May 29, 2018 10:02 pm

Jeff,
Thanks for the reply. I tried a set of 17 pitch mirage props and I was quick from the hole and the engines spun up but my economy suffered to .9 to 1.0 Nautical MPG. I'm wondering if an 18 rebel will be the happy medium.
1999 266SC, 200 H.O. eTec's, Dual Garmin 8212's, GSD24 w/TM260 Ducer, GMR604 xHD, AIS600, Reactor Autopilot with Smartpump, GXM51. JL Audio MHD900/5 , 2 pair of M770's and M10IB5 sub. TACO Grand Slams with 21' bly carbon fiber riggers and center rigger.

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jeff6513
Posts: 213
Joined: Mon Dec 26, 2005 6:25 pm
Boat Year: 99
Boat Mfg: Worldcat
Boat Model: SC
Location: Little Egg Harbor,NJ

Re: 1999 266SC Big Block Etec 200's prop help.

Postby jeff6513 » Thu May 31, 2018 6:49 am

18 would be to much I believe....I used 17's and had them dropped a bit to get 58K
Mirage is a great prop,but seems like the etecs do really well with the rebels.
just saw a pair of 17's for sale like new....over the weekend. They are pretty common and lots of good used pairs available.
"Killin Time",.... 1999- 266 SC,Twin Yamaha F200 I4's)
Simrad AP/ Furuno 1870 /Furuno Radar

Elvira
Posts: 34
Joined: Sat Dec 22, 2012 9:39 pm
Boat Year: 1999
Boat Mfg: World Cat
Boat Model: 266SC

Re: 1999 266SC Big Block Etec 200's prop help.

Postby Elvira » Thu May 31, 2018 10:18 am

Where did you see the 17's?
1999 266SC, 200 H.O. eTec's, Dual Garmin 8212's, GSD24 w/TM260 Ducer, GMR604 xHD, AIS600, Reactor Autopilot with Smartpump, GXM51. JL Audio MHD900/5 , 2 pair of M770's and M10IB5 sub. TACO Grand Slams with 21' bly carbon fiber riggers and center rigger.

User avatar
jeff6513
Posts: 213
Joined: Mon Dec 26, 2005 6:25 pm
Boat Year: 99
Boat Mfg: Worldcat
Boat Model: SC
Location: Little Egg Harbor,NJ

Re: 1999 266SC Big Block Etec 200's prop help.

Postby jeff6513 » Thu May 31, 2018 6:25 pm

on the bass barn,
http://www.thebassbarn.com/

for sale section,he just brought them TTT..... thats how i saw them
"Killin Time",.... 1999- 266 SC,Twin Yamaha F200 I4's)
Simrad AP/ Furuno 1870 /Furuno Radar

Elvira
Posts: 34
Joined: Sat Dec 22, 2012 9:39 pm
Boat Year: 1999
Boat Mfg: World Cat
Boat Model: 266SC

Re: 1999 266SC Big Block Etec 200's prop help.

Postby Elvira » Thu May 31, 2018 10:10 pm

Thanks for the link. I tried calling him and sent a text as well. We'll see what happens.
1999 266SC, 200 H.O. eTec's, Dual Garmin 8212's, GSD24 w/TM260 Ducer, GMR604 xHD, AIS600, Reactor Autopilot with Smartpump, GXM51. JL Audio MHD900/5 , 2 pair of M770's and M10IB5 sub. TACO Grand Slams with 21' bly carbon fiber riggers and center rigger.

Elvira
Posts: 34
Joined: Sat Dec 22, 2012 9:39 pm
Boat Year: 1999
Boat Mfg: World Cat
Boat Model: 266SC

Re: 1999 266SC Big Block Etec 200's prop help.

Postby Elvira » Mon Jun 11, 2018 8:17 am

Apparently this guy doesn't want to sell his props I called and texted him a dozen times at least.
1999 266SC, 200 H.O. eTec's, Dual Garmin 8212's, GSD24 w/TM260 Ducer, GMR604 xHD, AIS600, Reactor Autopilot with Smartpump, GXM51. JL Audio MHD900/5 , 2 pair of M770's and M10IB5 sub. TACO Grand Slams with 21' bly carbon fiber riggers and center rigger.


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