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-   -   30 Velocity drive swap (https://www.offshoreonly.com/forums/drives-lower-units/221017-30-velocity-drive-swap.html)

Andy 12-07-2009 07:55 PM

30 Velocity drive swap
 
Would there be a great difference in top speed by changing from nose coned TRS to #3's or Konrads. If I would only pickup 2-3mph it would not be worth it. I have 700hp+ hp and I know the TRS are a weak link but I have three spares so failure right now isn't an issue just more top end. Running 90mph+ now.

Biggus 12-08-2009 03:23 AM

The Konrad TRS replacement is 1.7" shorter from input shaft to prop shaft. The majority of TRS conversions gain 3-5 mph in top speed.

Converting to a SSM III is a major re-rig. The transom cut out is different, exhaust mods and the motor needs to be moved back about 3", the trans tailstock is also different.

Rookie 12-10-2009 11:29 AM


Originally Posted by Andy (Post 3002415)
I have 700hp+ hp and I know the TRS are a weak link but I have three spares so failure right now isn't an issue just more top end. Running 90mph+ now.

Running 90 with TRS, thats SWEET!! How many RPM's you turning and what size props?
Just curious :)

Andy 12-10-2009 04:08 PM

5700rpm and Bravo 34's There is still way more speed left in this old school ride. engines will turn 6,200rpm. Next year major test and tune till I hit 105mph minimum!


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