View Full Version : Converting Velvet Drive from 191 to 11

George S
10-28-2002, 06:34 AM
" Is it possible to convert a 1.91 geared Velvet Drive box to 1:1 or is it a major drama?

I have a 1.91 Borg Warner Velvet Drive box to sit behind a 4108 Perkins to drive a 23' displacement cruiser. The Engine/Box combination is a little bit longer than it should be for the boat, so I am considering converting the box to 1:1 by removing the extension housing. Is that possible without major expense or hassle, or should I shop around for a 1:1 box? "

10-28-2002, 07:46 PM
" George, keep in mind that the B/W 1.91 gear reverses the actual rotation of the engine. It is the only B/W gear to do so. If you change to a 1:1 gear you will have to change the prop also. Kim "

George S
10-29-2002, 05:54 AM
" Hi Kim and thanks for your advice. At this stage the engine/gearbox combo is new to the boat as my previous engine carked it! So, I will need to re-prop anyway. "

10-29-2002, 07:57 PM
" Just one more thought, to go from a 1:91 to a 1:1 gear is a huge jump. Can you get the performance you want even with a prop change. Good Luck and keep us posted, Kim "

Tim Leavy
07-17-2003, 11:14 PM
"i keep blowing front seal in trans what is the problem ,,, rebuilt by company and put in by same they are a t a loss need help!!!! [email protected] ("")

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