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Jan 23rd, 2013
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Prop sizing. For 200 efi #12403837
08/27/17 11:12 PM
08/27/17 11:12 PM
Joined: Jan 2005
Posts: 369
AUBREY, TEXAS
C
CWSANDERS Offline OP
Angler
CWSANDERS  Offline OP
Angler
C

Joined: Jan 2005
Posts: 369
AUBREY, TEXAS
I have a big fiberglass targa. Has 200 hp mercury efi. Running to high rpm. Has a 19p alum prop now which i know is not right. If you push motor wot it will run 7k rpm. What pitch prop should i get? It has no holeshot now either it plows until it gets on plane.

Re: Prop sizing. For 200 efi [Re: CWSANDERS] #12403838
08/27/17 11:13 PM
08/27/17 11:13 PM
Joined: Jan 2005
Posts: 369
AUBREY, TEXAS
C
CWSANDERS Offline OP
Angler
CWSANDERS  Offline OP
Angler
C

Joined: Jan 2005
Posts: 369
AUBREY, TEXAS
Heavy 20ft boat. Running 3 blade 19p it what it came with.

Re: Prop sizing. For 200 efi [Re: CWSANDERS] #12403890
08/28/17 12:08 AM
08/28/17 12:08 AM
Joined: Jul 2007
Posts: 642
Texas
NITRO Z8 Offline
Pro Angler
NITRO Z8  Offline
Pro Angler

Joined: Jul 2007
Posts: 642
Texas
CWSANDERS: Is your motor a optimax and if so not telling you what to do but if you go to mercury outboards - engine .com you will find that the RPM goes from 5000- 5750, so you may want to check it out. good luck!

Re: Prop sizing. For 200 efi [Re: CWSANDERS] #12403905
08/28/17 12:22 AM
08/28/17 12:22 AM
Joined: Apr 2017
Posts: 1,418
San Angelo
tmd11111 Online content
Extreme Angler
tmd11111  Online Content
Extreme Angler

Joined: Apr 2017
Posts: 1,418
San Angelo
Very doubtful it's hitting 7k rpm's. Check your tach and for that boat the 19" prop is probably the correct size give or take an inch. And the reason I say very doubtful is because if it's an older efi motor the rev limiter will kick in around 6k. If it's an opti maybe a few rpms higher.

Last edited by tmd11111; 08/28/17 12:25 AM.
Re: Prop sizing. For 200 efi [Re: CWSANDERS] #12403952
08/28/17 12:55 AM
08/28/17 12:55 AM
Joined: Jan 2005
Posts: 369
AUBREY, TEXAS
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CWSANDERS Offline OP
Angler
CWSANDERS  Offline OP
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Posts: 369
AUBREY, TEXAS
It is a efi. At idle in runs about 1200 rpm by my gauge. It is a 96 model.

Re: Prop sizing. For 200 efi [Re: CWSANDERS] #12404306
08/28/17 11:53 AM
08/28/17 11:53 AM
Joined: May 2003
Posts: 11,510
Littlefield Tx & Lake A. H. US...
gary purdy Offline
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gary purdy  Offline
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Joined: May 2003
Posts: 11,510
Littlefield Tx & Lake A. H. US...
You need to try a High Five prop. I would guess a 21 or 22 pitch. They work best in this type of application/


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Re: Prop sizing. For 200 efi [Re: CWSANDERS] #12461828
10/11/17 03:03 PM
10/11/17 03:03 PM
Joined: Apr 2015
Posts: 1,684
Grand Prairie Tx
Curtbass Offline
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Curtbass  Offline
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Joined: Apr 2015
Posts: 1,684
Grand Prairie Tx
Should be idling at 700-800. Check your tach first. Sounds like its off.

Last edited by Curtbass; 10/11/17 03:04 PM.

92' ChampioN 201DCR Elite
13' Yamaha250SHO
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