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E-Tec Mounting Height
chiburis4	#1  Posted on 04/17/14 - 10:13 AM
Member Personal Page Posts: 53 Comments: 0 Joined: 11/12/07	Hi All, I'm looking at a Newport with an E-Tec 90 mounted as so, o <-- mounting bolts o o o That seems too high to me. Correct? Thanks Edited by Tom W Clark on 04/17/14 - 9:56 PM
Tom W Clark	#2  Posted on 04/17/14 - 11:04 AM
Member Personal Page Posts: 4280 Comments: 7 Joined: 09/30/05	Too low. That's all the way down. o o o o <-- Mounting bolts should be going through these holes This will leave about 2-1/4" between the top of the transom and the motor mounting bracket "hooks"
chiburis4	#3  Posted on 04/17/14 - 11:35 AM
Member Personal Page Posts: 53 Comments: 0 Joined: 11/12/07	Thanks Tom, I appreciate it. With it mounted too low, how will that affect the performance? I'll be taking it for a ride soon and I'm wondering what symptoms I can attribute it to being mounted too low or it may be something else. Thanks again Steve
Marko888	#4  Posted on 04/17/14 - 12:01 PM
Member Project Albums Posts: 413 Comments: 10 Joined: 05/26/08	My experience with an engine mounted too low was that the boat tended to porpoise and the bow rose a lot when setting out. Trim adjustments were not very responsive either When I raised my engine two holes, the boat jumped up on plane with a lot less bow rise, trim adjustments were much more responsive and effective, the boat was faster and stopped porpoising.
Geo	#5  Posted on 04/17/14 - 3:33 PM
Member Personal Page Posts: 104 Comments: 4 Joined: 11/05/08	Is it generally true that raising the engine mount height will lower the bow while on plane? Edited by Geo on 04/17/14 - 3:35 PM
Tom W Clark	#6  Posted on 04/17/14 - 5:22 PM
Member Personal Page Posts: 4280 Comments: 7 Joined: 09/30/05	No. Bow height (hull's attitude), while on plane, has more to do with the load distribution, propeller and trim than anything. Raising the motor will tend to allow the boat to accelerate onto plane with less bow rise. There will be less spray coming off of the lower unit, there is usually more top speed, better fuel economy, less steering effort and less chance of propeller torque causing the boat to list to port. You also reduce the draft a little bit, which may be nice if you boat in shallow water.