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Max Online: 36273 @ 01/23/13 02:34 PM
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#12403837 - 08/27/17 06:12 PM Prop sizing. For 200 efi
CWSANDERS Offline
Angler

Registered: 01/18/05
Posts: 368
Loc: 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.

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#12403838 - 08/27/17 06:13 PM Re: Prop sizing. For 200 efi [Re: CWSANDERS]
CWSANDERS Offline
Angler

Registered: 01/18/05
Posts: 368
Loc: AUBREY, TEXAS
Heavy 20ft boat. Running 3 blade 19p it what it came with.

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#12403890 - 08/27/17 07:08 PM Re: Prop sizing. For 200 efi [Re: CWSANDERS]
NITRO Z8 Online   content
Pro Angler

Registered: 07/06/07
Posts: 628
Loc: 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!

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#12403905 - 08/27/17 07:22 PM Re: Prop sizing. For 200 efi [Re: CWSANDERS]
tmd11111 Online   content
Extreme Angler

Registered: 04/30/17
Posts: 1052
Loc: 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.


Edited by tmd11111 (08/27/17 07:25 PM)

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#12403952 - 08/27/17 07:55 PM Re: Prop sizing. For 200 efi [Re: CWSANDERS]
CWSANDERS Offline
Angler

Registered: 01/18/05
Posts: 368
Loc: AUBREY, TEXAS
It is a efi. At idle in runs about 1200 rpm by my gauge. It is a 96 model.

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#12404306 - 08/28/17 06:53 AM Re: Prop sizing. For 200 efi [Re: CWSANDERS]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 11481
Loc: 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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The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD

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#12461828 - 10/11/17 10:03 AM Re: Prop sizing. For 200 efi [Re: CWSANDERS]
Curtbass Online   content
Extreme Angler

Registered: 04/17/15
Posts: 1648
Should be idling at 700-800. Check your tach first. Sounds like its off.


Edited by Curtbass (10/11/17 10:04 AM)
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92' ChampioN 201DCR Elite
13' Yamaha250SHO

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