Thread: Jet Lower Unit

I wouldn't put a jet drive on a motor that small. You'll have less than 18 effective HP, and it will go through fuel like crazy. I have a 90/115 HP jet on an 1860 Alweld and it's no speed demon. Jets are great in shallow rivers, but I wouldn't want one for a lake boat.

What Sawdust said about only one manf. of jetdrives is true. Don't think the Yammy will fit your Merc. I ran a 60/40 Merc on my 175 Bass Tracker for a few years. Bought the boat w/ it. Found a 90/65 up here as they are not uncommon for fishing our rivers. The 60/40 just didn't have enough with two people in a loaded boat. You do lose hp/efficiency as said. I love the peace of mind so I guess that's my trade off. You can gain a few mph once up on plane by trimming up a tad too. It removes some of the drag caused by the pickup foot angle when trimmed down. The height of the foot relative to the bottom of your transom is critical too. I think it's +/- 1/4" if I remember right. Had to have a riverboat shop set the 90/65 and they did a sweet job of building a transom riser to get this placement correct. I really love mine. Oh, BTW if people horn in too close you can trim up and it works great to "accidently" give 'em a shower. I almost gave Billbob a washing down on Sardis last spring at the boat launch.

I have a 115 etec with a jet and love. I got mine from The Jet Doctor in ellington mo. The boat is as important as the jet in making it perform so before you spend any money I would talk to them they are good people.

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