"1981 ranger fish play" 488 mercruiser help with 24v trolling motor conversion pics

Silvertip

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Sep 22, 2003
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You are trying real hard to destroy this boat and yourself. No -- you can't use an electric pump unless the proper safetywiring is incorporated That means wiring through oil pressure switch and the starter solenoid. Overheating can crack a block, blow a head gasket and take the tension out of piston rings. Running without water also likely destroyed the impeller. You will not be certain of having isolated grounds using two separate chargers so charge one battery at a time. But that depends On the construction of your charger.
 
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You are trying real hard to destroy this boat and yourself. No -- you can't use an electric pump unless the proper safetywiring is incorporated That means wiring through oil pressure switch and the starter solenoid. Overheating can crack a block, blow a head gasket and take the tension out of piston rings. Running without water also likely destroyed the impeller. You will not be certain of having isolated grounds using two separate chargers so charge one battery at a time. But that depends On the construction of your charger.



thanks for the input about the 12volt fuel pump.
ya i know over heating is bad. i ran to boat when i heard it happening.
i had watter going just not enough.
charging both trolling motor bat is ok checked manual. trolling motor issue is taken care of. just 2 bat. together for 24volts and only to trolling motor.
been trying to keep her running and think i got 2 issues or more who knows?
seems (seems) to start when cold with these 550 cca battaries. but may have clog in fuel tank cuz wont stay running. it will run from gas can into fuel pump but scared to run it to long becouse water dosnt shoot out exhaust untell 1500 rpms or so . seems to be intermitent. Ohhh i bought a big rubermaid to lower out drive into so i could see that water pump was working. but like i said seems to be intermittent. will order a impeller encase it needs it.
anyway while trying to start it today the cables to starter got really hot. made sure ground and pos where tight. also got smoke out of starter after trying to start it a few times.
could this be becouse of the low cca batteries or is this definitively a bad starter?
now when starter couldnt turn motor over and just clicks like low battery. i pulled spark plugs and turned motor over. didnt get any water shooting out of plug holes so no gasket leaks. but motor turned slowly, then began turn turn quick. turned motor over a few times and it continued to turn well. installed plugs and wires, poured a lil gas into carb. and starter turned motor over and starter. i did this process a few times. with same results.

agian thanks on the fuel pump becouse i was going to pick one up tomorow, will also pick up a 850-1000 cca bat. i have a starter out of the original engine that is seazed, so i will also stop by the rewind shop and see what that will runn.


this cloged tank thing gets me thow. i can suck gas down my throat from the hose that leads to tank but as soon as i lower it to drain/syphon only a lil comes out. i will also pick up a hose and set a gas can on the ground and run hose to pump to see if that makes a diffrance.
 

Silvertip

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Sep 22, 2003
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You can't siphon fuel because there is an anti siphon valve at the outlet of the tank.
 
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allright finnaly got brave enough to put it in the water today. had started it in as tub every 3 or four days since last posting without much issues. the accasional starter not strong enough issue. revs up good in tub and iddle pretty good. but today in water i had to like double rev it at start to keep it from diying, then it could only rev and run at around 1500 rpm . i could like double rev it a little more and eventually got it to run at 2750 rpm maybe pushing to 3000rpm. didnt try any more cuz somthing just aint right. however she ran at that 2500 pretty well with trim all the way down. after running it a while i could stop and then start a lot better than earlier double reving. but after a while of coasting at 2000rpm would hesitate like.
wierd. feels like lacking powerr sort of.
anyone know why boat would rev good in a tub but hesitate underload in lake.
gonna get plugs and wires today.
and seemed like it may have a missfire.
could it be just plugs or coil or timming.
got a timming light if anyone has inpot on how to set it. can i just turn distriburater cap like old cars?
 

Silvertip

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Did it occur to you that the reason the engine seems to rev freely in a tub but not in the water in gear because in a tub there is no load on the engine and in the water and in gear there is. An engine running on only half its cylinders will rev freely with no load. By the way, have you actually looked at the plugs and checked each cylinder for good spark? Have the carburetor(s) been cleaned and properly adjusted?
 
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carbs were not cleaned. hopping to avoid that.
just now warmed engine up using hose removed both set screws and shoot carb cleaner in them then re installed to 1 1/4 out. checked the accelerator pump by looking down carb with engine off and throttled up and got good flow.
checked timming and it read exactly 0 degres. checked dwell and it says 40. book says 26-32 but dont want to adjust this becouse there is no access window in distributer cap, did however clean point with emery board. also installed the new starter which really didnt want to do. hate using these aftere market parts when i have originals, but started right up. nice and fast turnover.
i adjusted the timming to 6 btdc. i know book says 8 and then superceded to 4, but dwell aint set at 30 yet so.....also removed the anti syphon valve.
yes i am a idiot i thought it was in the tank. didnt realive it was the fitting on top.checked it and seemed to be clean but installed a non antisyphon fitting. will only run like this tell i verafy not the issue. keeping the antisyphon in the boat when i go out.


could the timming being off by that small of a amount be causing the bogging issue i was experincing?
and i have done comp on all cylinders. however didnt do it with throttle open so reading wernt accurate but were all 90ish. if problem continues next time i get it in the water compression will be done.
 

Silvertip

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Sep 22, 2003
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You are not doing things in the correct order. You MUST set dwell BEFORE you set timing. Dwell affects timing but timing does not affect dwell. There is no adjustment window in the cap because that would not then be an ignition protected cap.
 
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took her out today and ran like a dream. i know the dwell afects timming just wanted to have it in watter when i set dwell and only adjusted timming cuz i was allready checking it why not turn one bolt and adjust it a lil.
anyway boat ran buetiful once it warmed up, which it did quickly. ran her around at 3000 for a while . stopping ever now and then to shut her down and start her agian. got brave and opened her up to full throttle. she ran just over 3500 smoth and even. i know book says wot is 4200 but i good right where she is.
but when i tried to trailer it the starter just clicked. now this is a new starter. i had to cross the solenoid with a wrench. now it was hot as hell. just ran her for 10 min or more at wot, and coolant was a bolling out od reserive.
when i got her home turn it over and no problem. pretty shure just heat.
sooooo happy to get a boat in and out of the water without it costing 200 in something broke.
gonna go ahead and buy the sending units for her since she was such a good boat today!!!!!
 

Silvertip

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Sep 22, 2003
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28,771
So you reset the dwell (point gap) and now you have to reset the timing again. Why not just do it right in the first place. Keep overheating the motor and it will indeed cost you the $200+ you didn't want to spend. Spend the money to replace the impeller. Buying senders will not fix the overheating problem. The4rmostat is also cheap and may also be the cause of overheating.
 
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man i didnt over heat it. i shut her down before she red lined. well i idled back so she could cool down. and i set dwell while in water. then yes i had to re set timming. as i said only set it the first time cuz i was right there when i was checking it. boat ran great. these run hot. they changed to 4 inch coolers cuz of it. and water impellor worked fine. howevre i allready bought one and will install at end of season.
 
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