Recent content by heavy-chevy

don't mess with the heads unless you know what your doing, they are likely open chambers and you may add a flat area protruding into the piston crown if you just flat shave it. your best bet in my opinion is to get an omc 9.9 and modify it, big carb, maybe a little more compression, some basic...

real shame, but to be honest mercury and brp have a better 2 stroke anyhow, at least for the bigger engines. i don't know much about the smaller yamaha 2 strokes. its just another good thing the emissions natzis are killing off. the 2 stroke dirt bike is about to die as well, this is the last...

i have a gps but its broken, before was 30mph with 2 people and gear. the prop was too shallow before and my tach wont work now so getting the prop right is going to be difficult. im pretty sure i can use my multimeter as a tach somehow by reading the hz or something from a plug wire. il figure...

i looked for the carb but it was too rare to find. the problem with buying a carb from a different year is they are completely untunable and the jetting would be slightly off. this way i can dial it in nicely and it should realistically flow much better then the true 35hp carb anyhow. i need to...

its a keihin 34mm pj oval slide carb, came off of my 250r, i put a 38mm pwk on it.

hey guys, havent been on in a while. boats been sitting for a while. ever since i sank it all the electrical stuff has been giving me trouble so i let it sit for a long while. anyhow, shes back in business now and i figured it was time for an upgrade so i hoped the old johnson up a bit. i guess...

looking to upgrade.

looking for preferably an 88 model, but if you have anything post it up i will consider it. im also open to 30hp carbs.

well then ventilation would definitely be my issue as there is no pitting on the prop after 3 outings. i just don't understand how my pos hammer tuned 3 blade worked so much better then this fresh 4 blade under the same conditions.

realy? i wouldn't see it necessary on a motor that small.

it doesn't interfere with the torque tab as there isnt one on a 25hp, and its still about 1" from the plate. but what you said about clean water around the tip is what im talking about, im thinking that it being 1/4" closer makes it harder to draw water and easier to suck air from the surface...

okay so then my prop is not breaking the surface... which leaves me where i started, there must be a reason why the .5" bigger prop is not listed as compatible with my lower unit.

okay, the top of the prop is higher then the bottom of the boat, does this nescisarily mean its surfacing? the point of when a prop is actually surfacing is becoming blurry here.

hold up now, what exactly do you mean by surfaced? all im saying is a prop should be able to operate with part of the blade running out of the water. where i run my motor is standard height for most fiberglass boats i see, in fact maybe a little lower then most.

of the designs for running at the surface would be a 4 blade, in fact that's what theyr best at because by design they have alot more surface area... all bass boats run a surfacing prop, which is why a 4 blade does well on them. do you think they would throw the kind of roost they do with a...