13' with 1994 40hp OMC, couple quick setup questions.

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Author Topic:   13' with 1994 40hp OMC, couple quick setup questions.

The Judge posted 08-28-2006 02:17 PM ET (US)
Took her out yesterday after replacing fuel line and checking all connections and a fresh tank of 93 fuel. Did not GPS it because it was just a shakedown run but she popped up on plane with 400+lbs of people on the back twart and ran nicely in the 10 minutes i drove it. No bucking, puking, etc.
Now I have not installed the tach again(read below) but I believe I am running 5k+ with a 11.75x17 alum on a 1994 40hp Rude and bottom paint in good shape. Scary...no way, fast for a 13, sure. I would say 30ish. I do NOT have PTnT so she is set kinda low but does porpoise at cruise. I will mess with that and raise her up 2 holes as well(sitting on transom). Just bought a new 17" SS prop as well(Rapture). Anyone running the same setup and which pin do you have it set on? When running WOT she is level on the water, I think I need to go up a pin but worried about the porpoising. Raising the engine up "should" eliminate that I believe.
What tach are you guys running? Mine is an OMC that was on the 1982 35hp OMC and says 5 pulse/revs but I read like 6k+ which I know is not right. What the heck is 5 pulses/rev? I thought 6 pin was the correct setup but this tach has no adjustments, just plug it in the control box plug(3pin?).
Anyone run a jack plate and did it make a difference or just set that 190lbs aft further? I have to feather her off plane with 2 people or water comes over transom. I think I will try and put battery under console as well. Do you still have the VRO connected? If not, how did you disconnect it and do I need a new NON-VRO fuel pump to do so($120). i can not put anything under the front seat(fuel tank) because I have a custom mohogany storage box under it.
an86carrera posted 08-28-2006 02:42 PM ET (US)
You need a 6 pulse tach for that motor. Marine surplus has adjustable ones (teleflex) for like $15. Have them calibrate it for you, no charge.
I ran the 50 at the second from the top tilt pin hole.
Len
The Judge posted 08-28-2006 03:11 PM ET (US)
I have a tach off my 175 OMC which is set to 6 pulse but not sure how to connect wiring. Maybe I will cut the old wiring off and use that on the 175 tach to plug in my controls.
This 40 has a whacked out tilt system, not even close to your 50 plus my transom has a different contour being a 1981 vs 1967 I think. Will just try and see. My tilt looks like PTnT but no P, just a manual switch to lock cyl.
an86carrera posted 08-28-2006 03:21 PM ET (US)
The grey wire is the pulse wire. The other two are power? You might have a lighting wire also light should share ground with the tach power which could help you figure out the + or -.
Len
The Judge posted 08-29-2006 12:20 PM ET (US)
Installed 175hp tach last night, will see how she does...set to 6p. Grey on send, black on grnd, purple on Ign. should do the trick.
Operaman posted 08-29-2006 07:54 PM ET (US)
Water over the transom? Haven't seen that syndrom yet while underway. I went from a 11.75x17 (only was getting 4,600 at best) to a 12.5x13. Different boat. 13 SS with a Rude 40. 12 Gallon tank, VRO gone.
PeteB88 posted 08-29-2006 10:42 PM ET (US)
Your Honor - I have experimented w/ my Classic 13 Sourpuss specific to porpoising and motor position. It never does it with one or more passengers. I set pin mid or one lower. However, if I am alone it will porpoise. Only remedy I have found is pin all the way down and the sucker flys. I have not tried to put weight up front for trim when solo. Don't like that option. Motor is 92 Yam 40 w/ pwr T.
good luck
The Judge posted 08-30-2006 02:49 PM ET (US)
You never pulled back the throttle and have water come over your transom when coming to rest?

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Author	Topic: 13' with 1994 40hp OMC, couple quick setup questions.
The Judge	posted 08-28-2006 02:17 PM ET (US) Took her out yesterday after replacing fuel line and checking all connections and a fresh tank of 93 fuel. Did not GPS it because it was just a shakedown run but she popped up on plane with 400+lbs of people on the back twart and ran nicely in the 10 minutes i drove it. No bucking, puking, etc. Now I have not installed the tach again(read below) but I believe I am running 5k+ with a 11.75x17 alum on a 1994 40hp Rude and bottom paint in good shape. Scary...no way, fast for a 13, sure. I would say 30ish. I do NOT have PTnT so she is set kinda low but does porpoise at cruise. I will mess with that and raise her up 2 holes as well(sitting on transom). Just bought a new 17" SS prop as well(Rapture). Anyone running the same setup and which pin do you have it set on? When running WOT she is level on the water, I think I need to go up a pin but worried about the porpoising. Raising the engine up "should" eliminate that I believe. What tach are you guys running? Mine is an OMC that was on the 1982 35hp OMC and says 5 pulse/revs but I read like 6k+ which I know is not right. What the heck is 5 pulses/rev? I thought 6 pin was the correct setup but this tach has no adjustments, just plug it in the control box plug(3pin?). Anyone run a jack plate and did it make a difference or just set that 190lbs aft further? I have to feather her off plane with 2 people or water comes over transom. I think I will try and put battery under console as well. Do you still have the VRO connected? If not, how did you disconnect it and do I need a new NON-VRO fuel pump to do so($120). i can not put anything under the front seat(fuel tank) because I have a custom mohogany storage box under it.
an86carrera	posted 08-28-2006 02:42 PM ET (US) You need a 6 pulse tach for that motor. Marine surplus has adjustable ones (teleflex) for like $15. Have them calibrate it for you, no charge. I ran the 50 at the second from the top tilt pin hole. Len
The Judge	posted 08-28-2006 03:11 PM ET (US) I have a tach off my 175 OMC which is set to 6 pulse but not sure how to connect wiring. Maybe I will cut the old wiring off and use that on the 175 tach to plug in my controls. This 40 has a whacked out tilt system, not even close to your 50 plus my transom has a different contour being a 1981 vs 1967 I think. Will just try and see. My tilt looks like PTnT but no P, just a manual switch to lock cyl.
an86carrera	posted 08-28-2006 03:21 PM ET (US) The grey wire is the pulse wire. The other two are power? You might have a lighting wire also light should share ground with the tach power which could help you figure out the + or -. Len
The Judge	posted 08-29-2006 12:20 PM ET (US) Installed 175hp tach last night, will see how she does...set to 6p. Grey on send, black on grnd, purple on Ign. should do the trick.
Operaman	posted 08-29-2006 07:54 PM ET (US) Water over the transom? Haven't seen that syndrom yet while underway. I went from a 11.75x17 (only was getting 4,600 at best) to a 12.5x13. Different boat. 13 SS with a Rude 40. 12 Gallon tank, VRO gone.
PeteB88	posted 08-29-2006 10:42 PM ET (US) Your Honor - I have experimented w/ my Classic 13 Sourpuss specific to porpoising and motor position. It never does it with one or more passengers. I set pin mid or one lower. However, if I am alone it will porpoise. Only remedy I have found is pin all the way down and the sucker flys. I have not tried to put weight up front for trim when solo. Don't like that option. Motor is 92 Yam 40 w/ pwr T. good luck
The Judge	posted 08-30-2006 02:49 PM ET (US) You never pulled back the throttle and have water come over your transom when coming to rest?