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Author Topic:   V4 E-TEC Repower Choices

Ridge Runner posted 08-21-2009 09:34 AM ET (US)
For a non-whaler project, I’ve chosen to go with an E-TEC V4 for a re-power; the problem is which one. I need a 20” shaft and I can go with the 115-HP, 115 H.O. or the 130-HP. Price difference is + $650 from the 115-HP to either the 115 H.O. or 130-HP. The only listed difference in the factory spec’s is the 115-HP weighs 15-lbs less. What do you get with the H.O. version? This is a slight over power, re-power as the hull is rated at 100HP. Any insight is appreciated.
Jefecinco posted 08-21-2009 10:51 AM ET (US)
The 115 H.O. is virtually identical to the 130. [Suggested moving discussion to another website.]
Tom W Clark posted 08-21-2009 11:07 AM ET (US)
For a boat rated at only 100-HP, I'd save the $650 and 15 pounds and get the E-TEC 115. It will be more than enough.
Peter posted 08-21-2009 11:23 AM ET (US)
I think the 115 H.O. and 130 may have the exhaust tuning valve. They also have a different air intake system as I recall. The cowls of the 115 H.O. and 130 are slightly taller.
I agree with Tom's recommendation, the regular 115 should be more than adequate.
TransAm posted 08-21-2009 11:25 AM ET (US)
I think your choice will depend to a large degree on what your predominant usage will be. I would also take into consideration what make and model of boat you have and its corresponding weight and capacities. If you plan a lot of usage heavily loaded towing tubes or other water sports, the 115 H.O. or 130 may be a better choice. For general usage, the standard 115 HP engine will surely suffice.
Ridge Runner posted 08-21-2009 02:02 PM ET (US)
TransAm - Yes the main use will be water sports, large tubes and pulling up male 230-lbs skiers. I'm leaning towards the 115 H.O. I called my insurer and they are ok with overpowering by 15% or the 115 H.O., they have no issue with it being the H.O. version, they will not insure me with the 130-HP on the back. It is interesting as the dyno report show 126.5HP for the 115 H.O.
TransAm posted 08-21-2009 03:47 PM ET (US)
Your 230-lbs skiers will appreciate the extra ass in the engine if they are only toting a single slalom ski in a deep water start condition. I weigh only 185 lbs and prefer to out of the water as quick as possible-cuts down on muscle soreness the next day. It will also help getting out of the hole with a big tube on the back.
It would stand to reason 115 HO is essentially a standard 130; they probably dyno very close to one another. You were prudent to discuss this with your insurance carrier, but I would not feel obligated to share the dyno tests.
Ridge Runner posted 08-21-2009 04:49 PM ET (US)
Ok, I have another question. My dealer has a "leftover" 2009 115-HO that's ~$1,200 less then a 2010 model. The only issue is the 2009 has a 25" shaft lenght. What do you think about going with the 25" on a jack plate?
Peter posted 08-21-2009 05:35 PM ET (US)
The 25 inch V4s that I've seen look like they were made with a 20 inch shaft and a 5 inch shaft extension so I wonder whether they could be shortened by removing the extension.
Ridge Runner posted 08-22-2009 10:51 AM ET (US)
Peter - That does seem to be the case. The 25" version has 2.25:1 gear ratio and the 20" 2.00:1. What would the effect be with the gearing difference?
seahorse posted 08-22-2009 11:11 PM ET (US)
The 25" shaft version uses a V6 sized gear case and propeller.
Peter posted 08-23-2009 07:30 AM ET (US)
Sounds like the V6 gear case won't match up to the 20-inch V4 exhaust housing without 5 inch extension so there is no possibility of shortening, if I'm understanding correctly.
jimh posted 08-23-2009 08:00 AM ET (US)
The different gear ratios will produce different propeller shaft speeds. Generally the higher gear ratio (numerically) will be more useful on a boat that is heavier and is expected to have a lower top speed.
Your insurance company has demonstrated one of the differences between the 130-HP and the 115 H.O.: they will insure the motor whose cowling decal says "115" and not the one that says "130."
With Evinrude motors the "H.O." designator generally means a motor tweaked for higher speed operation. As noted, there often are differences in the gear case design and in the gear ratio.

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Author	Topic: V4 E-TEC Repower Choices
Ridge Runner	posted 08-21-2009 09:34 AM ET (US) For a non-whaler project, I’ve chosen to go with an E-TEC V4 for a re-power; the problem is which one. I need a 20” shaft and I can go with the 115-HP, 115 H.O. or the 130-HP. Price difference is + $650 from the 115-HP to either the 115 H.O. or 130-HP. The only listed difference in the factory spec’s is the 115-HP weighs 15-lbs less. What do you get with the H.O. version? This is a slight over power, re-power as the hull is rated at 100HP. Any insight is appreciated.
Jefecinco	posted 08-21-2009 10:51 AM ET (US) The 115 H.O. is virtually identical to the 130. [Suggested moving discussion to another website.]
Tom W Clark	posted 08-21-2009 11:07 AM ET (US) For a boat rated at only 100-HP, I'd save the $650 and 15 pounds and get the E-TEC 115. It will be more than enough.
Peter	posted 08-21-2009 11:23 AM ET (US) I think the 115 H.O. and 130 may have the exhaust tuning valve. They also have a different air intake system as I recall. The cowls of the 115 H.O. and 130 are slightly taller. I agree with Tom's recommendation, the regular 115 should be more than adequate.
TransAm	posted 08-21-2009 11:25 AM ET (US) I think your choice will depend to a large degree on what your predominant usage will be. I would also take into consideration what make and model of boat you have and its corresponding weight and capacities. If you plan a lot of usage heavily loaded towing tubes or other water sports, the 115 H.O. or 130 may be a better choice. For general usage, the standard 115 HP engine will surely suffice.
Ridge Runner	posted 08-21-2009 02:02 PM ET (US) TransAm - Yes the main use will be water sports, large tubes and pulling up male 230-lbs skiers. I'm leaning towards the 115 H.O. I called my insurer and they are ok with overpowering by 15% or the 115 H.O., they have no issue with it being the H.O. version, they will not insure me with the 130-HP on the back. It is interesting as the dyno report show 126.5HP for the 115 H.O.
TransAm	posted 08-21-2009 03:47 PM ET (US) Your 230-lbs skiers will appreciate the extra ass in the engine if they are only toting a single slalom ski in a deep water start condition. I weigh only 185 lbs and prefer to out of the water as quick as possible-cuts down on muscle soreness the next day. It will also help getting out of the hole with a big tube on the back. It would stand to reason 115 HO is essentially a standard 130; they probably dyno very close to one another. You were prudent to discuss this with your insurance carrier, but I would not feel obligated to share the dyno tests.
Ridge Runner	posted 08-21-2009 04:49 PM ET (US) Ok, I have another question. My dealer has a "leftover" 2009 115-HO that's ~$1,200 less then a 2010 model. The only issue is the 2009 has a 25" shaft lenght. What do you think about going with the 25" on a jack plate?
Peter	posted 08-21-2009 05:35 PM ET (US) The 25 inch V4s that I've seen look like they were made with a 20 inch shaft and a 5 inch shaft extension so I wonder whether they could be shortened by removing the extension.
Ridge Runner	posted 08-22-2009 10:51 AM ET (US) Peter - That does seem to be the case. The 25" version has 2.25:1 gear ratio and the 20" 2.00:1. What would the effect be with the gearing difference?
seahorse	posted 08-22-2009 11:11 PM ET (US) The 25" shaft version uses a V6 sized gear case and propeller.
Peter	posted 08-23-2009 07:30 AM ET (US) Sounds like the V6 gear case won't match up to the 20-inch V4 exhaust housing without 5 inch extension so there is no possibility of shortening, if I'm understanding correctly.
jimh	posted 08-23-2009 08:00 AM ET (US) The different gear ratios will produce different propeller shaft speeds. Generally the higher gear ratio (numerically) will be more useful on a boat that is heavier and is expected to have a lower top speed. Your insurance company has demonstrated one of the differences between the 130-HP and the 115 H.O.: they will insure the motor whose cowling decal says "115" and not the one that says "130." With Evinrude motors the "H.O." designator generally means a motor tweaked for higher speed operation. As noted, there often are differences in the gear case design and in the gear ratio.