matblack Posted December 23, 2013 Share Posted December 23, 2013 Just wanted to know anyone with the new 100hp Yamaha and if I am wasting my time and money . Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted December 25, 2013 Share Posted December 25, 2013 (edited) big debate with people from both sides some will say its not worth the upgrade u wont recover the money over the life of the engine others will say go for it im all for swapping out the old 2 strokes, 4 strokes are the future and they actually hold good resale value, just the initial outlay is costly over a 2 stroke ive had a 4 stroke on a previous boat and i was extremely happy with the fuel economy i actually went from going CRAP im out of fuel already to wasting half a tank after 3 outings, going from a 50hp 2 stroke to a 25hp 4 stroke big foot and i only lost about 10-12kph top speed by GPS from memory Edited December 25, 2013 by gazza Link to comment Share on other sites More sharing options...
matblack Posted December 26, 2013 Author Share Posted December 26, 2013 Thanks for the reply Gazza Link to comment Share on other sites More sharing options...
achjimmy Posted December 28, 2013 Share Posted December 28, 2013 Matblack I've looked at this a few times (currently have a Yam 90 2 stroke) the 100 4 stroke is heavier, so your hull needs to have plenty of boyancy in the rear . If your doing it for fuel economy don't bother , the Yam 90 2 stroker is pretty economical. Consumption at 4000 rpm is simalar, only improves at WOT. Of course there quieter and cleaner. If the hull can't take wieght comfortably I would have a talk to Huey about a etec which will give you some benefits without he weight. Link to comment Share on other sites More sharing options...
matblack Posted December 28, 2013 Author Share Posted December 28, 2013 Im putting it on a 5m Quintrex Freedom sports I thing it should be fine with the extra weight ,Thanks Jim Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted December 28, 2013 Share Posted December 28, 2013 Im putting it on a 5m Quintrex Freedom sports I thing it should be fine with the extra weight ,Thanks Jim my mate has the quintrex freedom sport 5.3m lovely riding boat he has the yamaha 115hp 2 stroke on it, i dont think you'll have any problems with it all modern boats can carry a 4 stroke but check your compliance plate for max HP rating i know my mates max HP is what they have on it that 100hp yammie is a extra 50kg over the 90hp 2 stroke but im sure your boat will piss it in easy done, the 80HP yammie 4 stroke even weighs a whopping 170kg Link to comment Share on other sites More sharing options...
matblack Posted December 29, 2013 Author Share Posted December 29, 2013 Yer Max I can go on the compliance is 100hp ,would love to go the new 115 Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted December 29, 2013 Share Posted December 29, 2013 mat u probably wouldnt need the extra ponies, my mates boat tops out at i think 62kph being a bowrider i dont think its designed for speed so i reckon you'd be comfortable with a light weight 80 on your boat Link to comment Share on other sites More sharing options...
matblack Posted December 29, 2013 Author Share Posted December 29, 2013 The weight difference is nothing Gazza from the 80 to the100 Link to comment Share on other sites More sharing options...
Guest Aussie007 Posted December 29, 2013 Share Posted December 29, 2013 The weight difference is nothing Gazza from the 80 to the100 yeah that is true, go for it man Link to comment Share on other sites More sharing options...
herbmozo Posted December 30, 2013 Share Posted December 30, 2013 What about Suzuki? a 90hp 4st weighs 168kg??? A proven and tested engine too Link to comment Share on other sites More sharing options...
matblack Posted December 30, 2013 Author Share Posted December 30, 2013 Already ordered and I cant wait Thanks anyway herbmozo Link to comment Share on other sites More sharing options...
achjimmy Posted December 31, 2013 Share Posted December 31, 2013 Already ordered and I cant wait Thanks anyway herbmozo Sounds good and I think the Yamaha 100 is only about 132kg iirc which makes it a light 4 stroke. Link to comment Share on other sites More sharing options...
macmac Posted January 2, 2014 Share Posted January 2, 2014 Already ordered and I cant wait Thanks anyway herbmozo Would u mind tell me how much did u spend for the brand new 4 stroke yamaha? PM me if u dont mind. Thanx Link to comment Share on other sites More sharing options...
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