Is it worth rebuilding an outboard before it blows up is there any real savings doing this way. And what should a rebuild cost in this situation. And what are somethings to ask the mechanic to do to up the ponies a little
Is it worth rebuilding an outboard before it blows up is there any real savings doing this way. And what should a rebuild cost in this situation. And what are somethings to ask the mechanic to do to up the ponies a little
That is a tough question to answer. If the motor has good compression numbers and passes a leak down test, and has been well maintained. I would see no reason to mess with success. If the comp numbers are starting to fade and wander the price varies with the rubuilder. A refresh could just be tearing the motor down honing the cylinders and re-ringing it. That would be the cost of a machine shop, rings, gaskets and labor. Or boring all the cylinders out, .020 oversize new pistons and rings, wrist pin bearings, etc. If you want to modify it your best bet would be to send it to Monty Racing in FL. He can go from mild to wild. Just remember every mod you make to the motor decreases reliablility. That's why we don't do mods here. Most race motors are rebuilt every 50-100 hours. The guys on http://www.screamnfly.com can help you out with perfomance hop ups.
Hope this helps.
Got a compression gauge on it's way to check. What is a normally range? The motor runs good just seems to be getting a little tired. Will having it refreshed as you put it bring back the power loss of the tired motor? Thanks for your input on the building up more that is definitely not what I'm looking for from the sounds of it.
Refreshing will normally bring power real close to factory specs. However I would do a decarb AFTER the initial compression test and see if it picks it up any...providing a decarb hasn't been done in a while.JMHO Another thing to look at...it's a 15 year old engine....the bearings..IE mains and rods, could use looking at... I'll defer to the gurus on that one. JMHO
What's a decarb and what does JMHO mean
De-carb means decarbonizing the motor with a chemical. There are a few ways to do the process. If your motor has never had proper service now would be the time.
Decarbing is introducing an anti-carbon agent into the engine to break it up. Carbon is a killer of two strokes. It can get into the ring lands and cause the rings to stick, causing low compression and skuffing pistons, etc.... JMHO = Just my Honest Opinon...
I think I have seen that done to my other boat awoke ago the mechanic sprayed some stuff in the intakes and made a mess coming out the exhaust. Is that something I can do or should I take it to a shop to have it done. Thanks for the info it helps. Trying to make a plan so murphys law can wipe it out
You can easily do it. Get a can of BRP engine tuner spray it in, let sit overnight, take to lake and run it or on the muffs but not on concrete it will stain black, change plugs afterwards. Did your mechanic let it sit for awhile? If not I might do again or run sea foam for awhile.
Yes he had it for a couple of days. When he fired it back up it puked all kinds of black soot. But that was my other boat this one I've had for just a couple years and it has not been done since I've had it. I will get some and give it a good clean . Thanks for all the info guys
When you do it, let it sit overnight, then be prepared to go run the hell out of it the next dat. The decarb works great, but also takes all the oil off the cylinders. Do when you go the next day it blows all that junk out of it and your good to go.....
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