mattyb Donating Members 1,097 Member For: 16y 11m 4d Gender: Male Location: Gold Coast, QLD Posted 24/12/10 10:48 AM Share Posted 24/12/10 10:48 AM (edited) Hey guys, I have a wake boat, and the electrics in it are playing up something fierce. We've replaced the ecm, all the sensors except for the map sensor (which arrives next friday), spent countless hours on it, and am frankly over it. We're looking to turn the motor which is a 350ci 5.7L 330hp mercruiser scorpion motor, the same as a VY SS motor, back to a carbie fuelled motor. What I'm asking for is a shopping list of what would be needed, such as a carbie, aircleaner, intake manifold, etc... Obviously it's to go inot a baot, but it uses the same principals as doing this to a motor for a car. Also, what is needed to 'plug' where the injectors and sensors are etc.Please help as I have a boat we can't use, and after hours of fault finding and many hours of testing, we're left to this last resort.Cheers. Edited 24/12/10 10:50 AM by mattyb Link to comment https://www.fordxr6turbo.com/forum/topic/72334-removing-fuel-injection/ Share on other sites More sharing options...
unclewal Donating Members 583 Member For: 14y 7m 28d Posted 25/12/10 07:48 PM Share Posted 25/12/10 07:48 PM Mate my suggestion would be to keep persevering , to swap back to a carby setup you will need , intake manifold, fuel pump, regulator, carby, fuel lines, ignition and potentially a different set of heads. I am sure you could make shortcuts, but if you plug the holes in the inlet manifold for the injectors and it starts leaking you will get all sorts of headaches and when you are on the river that's the last thing you want. Then you will need to tune it and time it for the carby setup (not hard but something that will need to be done regularly). The best suggestion I can recommend would be to sell the motor you have and buy a motor already done, cheaper and a serious lot less messing around.But if you have the money and want to strip off all the parts and go carby knock yourself out. Just my 2c Link to comment https://www.fordxr6turbo.com/forum/topic/72334-removing-fuel-injection/#findComment-1066633 Share on other sites More sharing options...
mattyb Donating Members 1,097 Member For: 16y 11m 4d Gender: Male Location: Gold Coast, QLD Posted 26/12/10 12:31 AM Author Share Posted 26/12/10 12:31 AM Yeah, but the whole reason behind this is time. Its almost january, we've had the boat 4 months now and in the water 3 times. The mob that sold it to us sent us a fuel filter, and then brushed the whole issue under the carpet...not to mention spending alomost $3k on 'problems'. If, we were living somewhere that had a mercruiser dealer, who we could park it with them for a week, maybe 2 and let them sort it. As far as I can see, a new intake manifold, fuel pump, regulator, carby, fuel lines, & ignition, can be fitted by myself in a weekend easy. Then I could get it tuned by KSM here in emerald (a premier race boat engine builder who doen't deal in fuel injected) Turnaround of maybe 2.5 weeks by the time I get parts. Cheers, where u located wal? Link to comment https://www.fordxr6turbo.com/forum/topic/72334-removing-fuel-injection/#findComment-1066702 Share on other sites More sharing options...
Adam Here since the start... Lifetime Members 10,282 Member For: 22y 22d Gender: Male Location: Victoria Posted 26/12/10 12:52 AM Share Posted 26/12/10 12:52 AM What about a decent auto elec? You don't need a Mercruiser dealer to look at it. Link to comment https://www.fordxr6turbo.com/forum/topic/72334-removing-fuel-injection/#findComment-1066706 Share on other sites More sharing options...
unclewal Donating Members 583 Member For: 14y 7m 28d Posted 26/12/10 01:26 AM Share Posted 26/12/10 01:26 AM On 26/12/2010 at 12:31 AM, mattyb said: Yeah, but the whole reason behind this is time. Its almost january, we've had the boat 4 months now and in the water 3 times. The mob that sold it to us sent us a fuel filter, and then brushed the whole issue under the carpet...not to mention spending alomost $3k on 'problems'. If, we were living somewhere that had a mercruiser dealer, who we could park it with them for a week, maybe 2 and let them sort it. As far as I can see, a new intake manifold, fuel pump, regulator, carby, fuel lines, & ignition, can be fitted by myself in a weekend easy. Then I could get it tuned by KSM here in emerald (a premier race boat engine builder who doen't deal in fuel injected) Turnaround of maybe 2.5 weeks by the time I get parts. Cheers, where u located wal?Located in NSW, used to crew for a circuit race team down here when I was younger and played the find the fault problem before. I have to agree with the above, spend another $500 on a decent auto electrician before you go spending any money on parts for the engine would be a lot cheaper and potentially a time saver because it could a $2 part (always what f*cks up and causes head aches). Alternatively ask the race guys in Emerald about what will bolt to the LS1 block and what wont for carby, they should be able to tell you straight up a price and the parts needed, I am almost certain the heads will need to be changed as well as the intake manifold, which isn't a cheap option when you already have decent hardware bolted in. Link to comment https://www.fordxr6turbo.com/forum/topic/72334-removing-fuel-injection/#findComment-1066720 Share on other sites More sharing options...
ms700 Moderating Team 10,170 Member For: 22y 3m 17d Gender: Male Location: Sydney Posted 26/12/10 01:40 AM Share Posted 26/12/10 01:40 AM How about dropping it off to someone like Chiptorque? Link to comment https://www.fordxr6turbo.com/forum/topic/72334-removing-fuel-injection/#findComment-1066724 Share on other sites More sharing options...
mattyb Donating Members 1,097 Member For: 16y 11m 4d Gender: Male Location: Gold Coast, QLD Posted 26/12/10 07:21 AM Author Share Posted 26/12/10 07:21 AM (edited) Tried the auto leccy avenue already, he took a look at it and said... "this is why I work on cars, lol"the story goes like this...bought the boat, water tested it, drove 800km, fired it up in the water, and it had a miss. Replaced all the plugs, fuel filter, and the miss went away. Next time we were on the water, the miss came back. Took it to Mercruiser in Rockhampton, and they said it was running 38deg timing, and was registering knock in double figures, so they pulled the timing back to 28deg, and the knock all but dissappeared. Brought the boat back to emerald, put it in the water, and after 10-15 mins of use, it would beep once, and cut the revs back to zero, then bring them back to where they were, all in a split second. Merc gave us a scan tool, we took it to our race engine builder here, and he was walked thru it over the phone. Couple of sensors came up showing faults. Merc sent the new sensors, they were fitted, the errors were cleared, but to no avail. now with boats, namely the mercs, they have a 2 beep alarm, a 3 beep alarm, etc... but nowhere in the programming of the ecm, is there anything for a 1 beep alarm and a power cut, lol. This is when we took it to an auto leccy.So we were sent 4 more sensors, and a new ecm, and they were fitted, the the motor was run on land, and there were no errors showing at all. we took the boat out, and it was running soooo ruch there was fuel in the water behind the boat, the exhaust looked black like a diesel, and the boat wouldn't idle.... so this is where I'm at,lol. Unfortunately the race boat shop in town don't start back at work till mid January. Anyone got any tips??? Edited 26/12/10 07:23 AM by mattyb Link to comment https://www.fordxr6turbo.com/forum/topic/72334-removing-fuel-injection/#findComment-1066791 Share on other sites More sharing options...
South Member 323 Member For: 18y 7m 24d Gender: Male Location: Perth Posted 26/12/10 08:03 AM Share Posted 26/12/10 08:03 AM You do know what Boat stands for right!?!If its an LS series motor, take it to a performance shop that deals with GM products.If the manufacturer can't fix it, then someone who plays with these engines should know a thing or two... Link to comment https://www.fordxr6turbo.com/forum/topic/72334-removing-fuel-injection/#findComment-1066802 Share on other sites More sharing options...
Adam Here since the start... Lifetime Members 10,282 Member For: 22y 22d Gender: Male Location: Victoria Posted 26/12/10 08:32 AM Share Posted 26/12/10 08:32 AM How about the actual wiring looms. Were they tested? Sounds like you've replaced all of the sensors etc, so you can rule those out. Link to comment https://www.fordxr6turbo.com/forum/topic/72334-removing-fuel-injection/#findComment-1066808 Share on other sites More sharing options...
mattyb Donating Members 1,097 Member For: 16y 11m 4d Gender: Male Location: Gold Coast, QLD Posted 26/12/10 09:21 AM Author Share Posted 26/12/10 09:21 AM Yeah, if we do this sensor and it doesn't work, merc have said they'll sent a new wiring loom, and a new ignition. That'll be 2 weeks away at least, lol. Link to comment https://www.fordxr6turbo.com/forum/topic/72334-removing-fuel-injection/#findComment-1066817 Share on other sites More sharing options...
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