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Engine Wt
boopete	#1  Posted on 07/12/08 - 7:06 PM
Member Posts: 25 Comments: 0 Joined: 06/08/07	I recently repowered a 1985 17 super sport with a 115 hp suzuki 4 stroke. It has 25shaftwas rigged with a 6 inch jackplate with 4" setback. The additional weight from the 1994 merc 90 two stroke to this setup was 137 lbs, however it sets boat way to low in the water. I have a 90 honda 4 stroke that I could rig on the whaler, however that would only be 43 lbs less tha suzuki setup. Any suggestions or help would be appreciated.
Phil T	#2  Posted on 07/12/08 - 9:05 PM
Administrator Personal Page Personal Album Project Albums Posts: 7043 Comments: 6 Joined: 03/26/05	40 lb reduction is a significant difference. Moving other weight forward will too. Where is the battery and gas tank located now? I would move them forward as well. 1992 Outrage 17 I 2019 E-TEC 90, Viper 17 2+ 2018 Load Rite Elite 18280096VT
sraab928	#3  Posted on 07/13/08 - 4:23 AM
Member Project Albums Posts: 1282 Comments: 13 Joined: 12/27/05	I agree with CBO - try moving some weight forward first - maybe even add weight to the bow locker. Then see where you are before switching motors. Scott 1974 21' Revenge w Mercury 200 ProXS V8
kamie	#4  Posted on 07/13/08 - 5:01 AM
Member Personal Page Project Albums Posts: 2975 Comments: 3 Joined: 11/04/05	two problems that I see, the first is the boat should have a 20 inch outboard,not a 25. That means that you should be at the top of your jackplate with no place to adjust. Any reason you got a 25 inch shaft, rather than the 20 inch shaft? The other problem, is that using a jackplace will place the weight further aft, that changes how the boat sits in the water and will always make the stern sit lower. on my 18, the stern sits 2 to 3 inches lower with the jackplate than without. Can you convert the Suzuki to a 20 inch rather than a 25 inch shaft? and then hang it back directly on the transom? If you can't do that than get CMC's Vertical extension that gives you 5 inches of lift but no setback. The boat will still sit lower but mostly from the additional weight, not a combination of the weight and the setback. Also, remember that any brackets add weight as well.
boopete	#5  Posted on 07/13/08 - 7:36 AM
Member Posts: 25 Comments: 0 Joined: 06/08/07	I bought the 115 because it was a deal. Sometimes, it's the deal you thought you got instead of the deal you really got. I have 25 gallons of fuel which i need to get forward somehow. The 90 20" honda is on my poontoon, so switching would probably be easier, I think. Thanks
John Fyke	#6  Posted on 07/13/08 - 9:33 AM
Member Personal Page Posts: 1307 Comments: 0 Joined: 09/06/06	boopete wrote: I bought the 115 because it was a deal. Sometimes, it's the deal you thought you got instead of the deal you really got. I have 25 gallons of fuel which i need to get forward somehow. The 90 20" honda is on my poontoon, so switching would probably be easier, I think. Thanks I agree with using the honda. The difference in hp compared to performance is probably very little. John Fyke Re-Fit or Reef It 1979 15' Sport with Super Sport conversion and 70hp mercury.