Prop selection for 358 with 500efi's
07-01-2004, 09:49 AM
#21
Re: Prop selection for 358 with 500efi's
I have the same bouncing problem with my 35ss and am looking for info on the best props to cure this. Has anyone tryed the hydromotives yet.....supposed to give better stern lift.
Also my tabs appear to be "nuetral" (even with bottom) around 5 also. But how are you guys finding a "nuetral" setting with the drives ? what are you calling/refering to as nuetral as far as drive trim when you look at the back of the boat ?
Also my tabs appear to be "nuetral" (even with bottom) around 5 also. But how are you guys finding a "nuetral" setting with the drives ? what are you calling/refering to as nuetral as far as drive trim when you look at the back of the boat ?
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07-01-2004, 08:43 PM
#23
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Re: Prop selection for 358 with 500efi's
The 30 Bravo 1's that Iam running are not labs. i have a set of labs coming to try. My drives are Mercury Racing XR's with ITS which gives about 7 inches of extension.
07-02-2004, 06:18 AM
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Re: Prop selection for 358 with 500efi's
Originally Posted by VIPER7
The 30 Bravo 1's that Iam running are not labs. i have a set of labs coming to try. My drives are Mercury Racing XR's with ITS which gives about 7 inches of extension.
Are you running 500 EFI's or the 525's?
07-19-2004, 08:37 PM
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Re: Prop selection for 358 with 500efi's
OK- got a set of 28's Bravo1's from an OSO brother- not labbed in good shape (thanks Jim)
Air temp-85
Water Temp- 80-85
a little humid to say the least
waves- 1 foot or so
Conclusion-
boat ran MUCH better with the 28's vs. the 26's
more stern lift, and no bouncing bow-
no tabs, and drives set at "3", and 1/2 tank of gas, 1 person
3800rpms- 59mph GPS
WOT @ 4800- 76.2 GPS
much better mid-range cruising, with minimal top end ( 2 mph or so )
Air temp-85
Water Temp- 80-85
a little humid to say the least
waves- 1 foot or so
Conclusion-
boat ran MUCH better with the 28's vs. the 26's
more stern lift, and no bouncing bow-
no tabs, and drives set at "3", and 1/2 tank of gas, 1 person
3800rpms- 59mph GPS
WOT @ 4800- 76.2 GPS
much better mid-range cruising, with minimal top end ( 2 mph or so )
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09-07-2004, 10:08 PM
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Re: Prop selection for 358 with 500efi's
I have tried several different propellers from Mercury and Hydromotive on my 05 358 with twin 525's. Hydromotive 27 P5-X's are by far the best over all propellers I have found. The bow bounce and porpoising problems of the 358 are almost eliminated. The Hydromotive 5 blades only require a minimum amount of tab to keep the bow down as compared with a ton of tab with the Mercury Bravo 1 4 blades. Acceleration out of the whole and midrange is like a day and night difference. Fuel economy is also much improved as prop and hull efficiency is much higher and the top speed is at least the same as with the Bravo 1's. I hope to play with the boat a little more to see if I can coax a little more speed out of the P-5's.
09-19-2004, 04:15 PM
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Re: Prop selection for 358 with 500efi's
Friend of mine just bought a 2001 358 with 500 efi's the boat has imco extension boxes and 28 labbed 4 blades we hit 76.8 on gps yesterday.Anyone running this combo?I ran the boat and it starts to porpoise and wont stop until you tab it down,5 on the indicator dropping drive didnt help but than again this was a 5 minute ride.please post any relative comments.Interesting trait (porpoising)wonder why? anyone else use 5 blades.
