Recent content by nordy

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    Johnson 30hp long transom rebuild

    Hello, I need to change short for long transom with a kit. I worry about this, because the exhaust system's resonance length is increased about 11 cm. This will cut maximum power a bit, because exhaust charging will happen at lower speed. On the other hand maximum torque will increase due to...
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    Too little clearance between skeg fin and prop ?

    Hello, I have a 2000 Johnson 30hp. I changed the serial prop for a 10 1/8 x 13 Vortex having tried the same Vortex prop with 12 pitch before. The performance with 12 '' was very good but max engine speed was too high, so I tried the 13 ''. Fixing the prop I noticed very little clearance...
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    minimum clearance between skeg fin and prop

    Hello, I have a 2000 Johnson 30hp. I changed the serial prop for a 10 1/8 x 13 Vortex having tried the same Vortex prop with 12 pitch before. The performance with 12 '' was very good but max engine speed was too high, so I tried the 13 ''. Fixing the prop I noticed very little clearance...
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    johnson 30hp/2000 vs. 35hp/1993

    Hello, is there any difference between both two-cylinder engines. Has the older 35hp engine really 5 hp more ? In brp parts list I only found different parts numbers for intake manifold and exhaust tube (diffusor tube). Does this mean that exhaust pipe is tuned differently with the 35 hp for...
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    Johnson 30 hp 2000 with remote

    Hello friends, the shift cable anchor at the lower engine cover, where the gear cable blocks up has been broken now for a second time. It's of cast and it seems to get too easily broken from screw bending stress or switching force. It's badly manufactured because the inner edges aren't rounded...
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    Johnson 30 hp: Changing gear wheels

    Hello,<br /><br />is it possible to the change the serial 13:28 wheels for the 12:29 wheels from the 15hp-Johnson ?<br /><br />I need a 0,414 or near by gear ratio.<br /><br />Best greetings<br /><br />Nordy
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    30 hp Johnson with increased power

    Hi,<br /><br />I have a 2000 Johnson 30hp, which had a rather disappointing performance in the beginning. <br />It lacked power, was a lame duck.<br /><br />So I looked for possibilities of tuning or tweaking it's power.<br /><br />The easiest way was tuning the intake first.<br /><br />The...
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    Evinrude 35 hp 2-cylinder

    Hello,<br /><br />does anyone know the exact technical differences between the Evinrude and the Johnson 30 hp 2-cylinder ?<br /><br />Greetings from Germany<br /><br />Nordy
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    Calculating Engine Speed

    Hello,<br /><br />I have some questions calculating engine speed of a rib with two engines:<br /><br />1.) E-Tec-50hp: i=2,67, prop=3 x 14 x 17<br />measured max speed = 59.9km/h / 6000 rpm<br /><br />2.)Honda 50hp: i=2,09, prop=3 x 11.5 x 14.25<br />measured max speed = 59.4 km/h / 6000 rpm<br...
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    Caculating boat speed

    Hello,<br /><br />I have some questions caculating engine speed of a rib with two engines:<br /><br />1.) E-Tec-50hp: i=2,67, prop=3 x 14 x 17<br /> measured max speed = 59.9km/h / 6000 rpm<br /><br />2.)Honda 50hp: i=2,09, prop=3 x 11.5 x 14.25<br /> measured max speed = 59.4 km/h / 6000...
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    Power tuned johnson 30hp

    Hello,<br /><br />I increased the power of my engine by several measures dramatically, so the power is now around 40hp.<br />I reduced intake throttlening for better cylinder filling, increased compression ratio, and took care for a richer mixture.<br /><br />Now in a further step I want to...
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    Unkown Johnson 50hp

    Hello,<br /><br />does anybody of you know this special model with a strange looking paint.<br />How would you estimate the vintage of this engine ?<br /><br />Look here:<br /><br /> http://i12.ebayimg.com/01/i/02/dc/70/64_2.JPG <br /><br />Greetings from Germany<br /><br />Nordy
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    Questions to old Johnson 50hp

    Hello,<br /><br />how would you estimate the age of the outboarder in this picture:<br /><br /> http://i19.ebayimg.com/02/i/02/cc/69/bf_1.JPG <br /><br />It is said to be a short transom.<br /><br />I wonder if this is right, the 50hps are long transom ones as far I can remember.<br /><br...
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    1985 Johnson brochure

    Hello,<br /><br />does anybody have it ?<br /><br />Greetings from Germany<br /><br />Nordy
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    Johnson 50hp

    Hello,<br /><br />Who can tell the kind of model and the year of manufacture:<br /><br />VRO 50<br />BJ50BELCO<br />G7045513<br /><br />Does it have a powertrim ?<br />Is it still the current model ?<br /><br />Greetings from Germany<br /><br />Nordy
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