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Dec 30th, 2023
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 Prop sizing. For 200 efi
#12403837
08/27/17 11:12 PM
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Joined: Jan 2005
Posts: 369
CWSANDERS
OP
Angler
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OP
Angler
Joined: Jan 2005
Posts: 369 |
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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Re: Prop sizing. For 200 efi
[Re: CWSANDERS]
#12403838
08/27/17 11:13 PM
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Joined: Jan 2005
Posts: 369
CWSANDERS
OP
Angler
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OP
Angler
Joined: Jan 2005
Posts: 369 |
Heavy 20ft boat. Running 3 blade 19p it what it came with.
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Re: Prop sizing. For 200 efi
[Re: CWSANDERS]
#12403890
08/28/17 12:08 AM
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Joined: Jul 2007
Posts: 688
NITRO Z8
Pro Angler
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Pro Angler
Joined: Jul 2007
Posts: 688 |
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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Re: Prop sizing. For 200 efi
[Re: CWSANDERS]
#12403905
08/28/17 12:22 AM
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Joined: Apr 2017
Posts: 12,145
tmd11111
TFF Guru
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TFF Guru
Joined: Apr 2017
Posts: 12,145 |
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.
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Re: Prop sizing. For 200 efi
[Re: CWSANDERS]
#12403952
08/28/17 12:55 AM
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Joined: Jan 2005
Posts: 369
CWSANDERS
OP
Angler
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OP
Angler
Joined: Jan 2005
Posts: 369 |
It is a efi. At idle in runs about 1200 rpm by my gauge. It is a 96 model.
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Re: Prop sizing. For 200 efi
[Re: CWSANDERS]
#12404306
08/28/17 11:53 AM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 11,586 |
You need to try a High Five prop. I would guess a 21 or 22 pitch. They work best in this type of application/
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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Re: Prop sizing. For 200 efi
[Re: CWSANDERS]
#12461828
10/11/17 03:03 PM
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Joined: Apr 2015
Posts: 1,818
Curtbass
Extreme Angler
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Extreme Angler
Joined: Apr 2015
Posts: 1,818 |
Should be idling at 700-800. Check your tach first. Sounds like its off.
Last edited by Curtbass; 10/11/17 03:04 PM.
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