Here's a good one for u guys, prop or motor problem

[danamul1977]

I Bought a 1883 v375 18' Ranger with 1990 200hp merc last year. Rebuilt the carbs and changed all the hoses everywhere, cleaned the fuel tanks & changed the fuel pump diaphragm. I took the boat out for the first time last week. It has a 26 pitch Chopper prop on it. It was having a lot of trouble getting on plane it would take 10 sec or more with people to get on plane. It gets to about 3500rpms for 5-8 sec before it would finally level out and then I would get a jolt to take off. So I thought it could be the prop and sense I was up north I could only find a aluminum prop 23 pitch. I put that slowly took off. Then it started bogging down at 2000-2500rpms and would kill. Took it out and took all the carbs off checked the floats for too rich a mixture, didn't work same thing happened. The next morning I put the old prop back on and it went back to the slow off the gun untill it got on plane. Any thoughts The carbs seem to be working right (all are sucking air and not leaking) I have a fuel/water separator (no water). This prob is above my knowledge level. I know the chopper props can run shallow but I don't see why it would bog down with the aluminum prop. Any advice on what I should try?

 

[oldman570]

Re: Here's a good one for u guys, prop or motor problem

If you take the boat to a scale and weigh it, and then go to a prop manufacture website and enter all the info asked for. The prop calculator will tell you the best prop pitch for your setup. It sounds as though you are over pitched for the setup of the boat. By doing this and checking just what the Ranger boat is suppose to weigh you might find that the flotation in the boat is waterlogged and adding extra weight and causing your troubles. JMO
Oldman570

 

[danamul1977]

Re: Here's a good one for u guys, prop or motor problem

I was thinking that too thats why I bought the 23p aluminum prop but then it wouldn't run, that was weard.

 

[Faztbullet]

Re: Here's a good one for u guys, prop or motor problem

With a over the hub chopper you should be spinning about 4000-5000 rpm out of the hole then the prop bites(jolt) and it should get some gone....sounds like you may have a low end electrical problem like 1 bank not firing on low speed side of stator.

 

[danamul1977]

Re: Here's a good one for u guys, prop or motor problem

I was thinking the aluminum prop might not of been venting the exhaust correctly idk

 

[danamul1977]

Re: Here's a good one for u guys, prop or motor problem

With a over the hub chopper you should be spinning about 4000-5000 rpm out of the hole then the prop bites(jolt) and it should get some gone....sounds like you may have a low end electrical problem like 1 bank not firing on low speed side of stator.

Is there a way to test the stator? I was only running at 4400rpm at wot so I know that was too low also. The positive motor cable also fell off during using it and the rpm gauge died shortly after that. Wondering if it falling off would of done anything to fry the gauge or harm the stator. That stator is around $450 it would be nice to test it before buying one.

 

[danamul1977]

Re: Here's a good one for u guys, prop or motor problem

Reading up on how to test the stator guess thats my next step, if anyone has any info for me on that, that would be great.

 

[Dukedog]

Re: Here's a good one for u guys, prop or motor problem

Is tha chopper a small ear or big ear? Diameter will tell which it is. Chopper and Ranger don't even belong in tha same sentence! Either way its totally wrong for that boat unless ya got a coned gear case and runin' tha motor pretty high with a very light load. That thing should turn a small hub like an A45 Trophy (23 maybe) and/or Laser with better performance than tha chopper. It might even turn an A45 23 Tempest really well if tha motor is right. Don't have a clue as ta why it acts up with tha alum. prop...........jmo

 

[wired247]

Re: Here's a good one for u guys, prop or motor problem

You should be able to run a 26 small ear chopper without any problem with a 200 Merc. The 23 should definitely get up and go.

1. You probably didnt do your rectifier/regulator set any good with the disconnected positive cable. They dont like that. Not sure if it affected your switch boxes but I'd check them to be sure. Sounds like you might be missing on one cylinder at least. Start checking spark and compression. I'm not a huge fan of chrome bore V6's and some peeling chrome can hose your compression numbers.

 

[wired247]

Re: Here's a good one for u guys, prop or motor problem

Is there a way to test the stator? I was only running at 4400rpm at wot so I know that was too low also. The positive motor cable also fell off during using it and the rpm gauge died shortly after that. Wondering if it falling off would of done anything to fry the gauge or harm the stator. That stator is around $450 it would be nice to test it before buying one.

Theres enough junk 2.4's out there for find a good used stator for under a hundred bucks. Check the other stuff though.

 

[danamul1977]

Re: Here's a good one for u guys, prop or motor problem

Is tha chopper a small ear or big ear? Diameter will tell which it is. Chopper and Ranger don't even belong in tha same sentence! Either way its totally wrong for that boat unless ya got a coned gear case and runin' tha motor pretty high with a very light load. That thing should turn a small hub like an A45 Trophy (23 maybe) and/or Laser with better performance than tha chopper. It might even turn an A45 23 Tempest really well if tha motor is right. Don't have a clue as ta why it acts up with tha alum. prop...........jmo

Its the big ear chopper around 14.5 diameter also big hub. Ya I think then first step then would be getting a different prop and testing it again. I think all I can use are big hub props. The compression test had 134 on the top 4 and 128 on bottom two. I was thinking that was higher than standard, because they used this motor for racing back in the 90's which is why the chopper must be on there.

 

[danamul1977]

Re: Here's a good one for u guys, prop or motor problem

You should be able to run a 26 small ear chopper without any problem with a 200 Merc. The 23 should definitely get up and go.

1. You probably didnt do your rectifier/regulator set any good with the disconnected positive cable. They dont like that. Not sure if it affected your switch boxes but I'd check them to be sure. Sounds like you might be missing on one cylinder at least. Start checking spark and compression. I'm not a huge fan of chrome bore V6's and some peeling chrome can hose your compression numbers.

Think they might of reringed the cylinders back in the day they were 134 on top 4 and 128 bottom two. Ill check both of those and see.

 

[Dukedog]

Re: Here's a good one for u guys, prop or motor problem

First of all ALL choppers are over tha hub. Later models are a touch larger to allow for tha Flo-torque hub kit. No such thing as small and large hub choppers. When I said small hub referring to tha Trophy and Laser I'm talking about a 4 1/4' hub. This size on a "normal" 4 3/4" hub gear case (I'm sure yours probably is) will allow "some" of tha exhaust go over tha hub (for ventilation) and majority of it thru tha hub. Clear as mud, huh...........Does your gear case have lwp on it or is it stock? I wouldn't trust any kinda alum. prop for any reason ona big motor on any type of performance type hull........jmo

Nothin' at all wrong with that compression. Ain't nothing wrong with a good solid chrome bore either. They pretty much dominated tha production V6's for many years. Just not to many of 'em left that are still all chrome. Yours included, especially comin' off a hot rod..............

 

[danamul1977]

Re: Here's a good one for u guys, prop or motor problem

guess I'll try a lazer II or trophy and see how it goes. I gotta figure out how to check the stator and trigger (never done that). Then maybe the rectifier/regulator, gonna check the spark tomorrow

 

[danamul1977]

Re: Here's a good one for u guys, prop or motor problem

Wonder if I should use a spark gap tester or just ground them out crank it and use an eye test =], cant seem to find a spark gap tester at any stores around here.