M8 drive issues behind 1350 Q4
06-09-2012, 06:38 PM
#11
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His list of clients read like a whos who of boating.
06-09-2012, 08:27 PM
#12
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The main reason my drives are living is because of Vern Gilbert of West Coast drives.When he sets them up,he spends the time to check and adjust tooth contact via shiming.He gets them to have full contact evenly across the face of the gear and isnt satisfied until it does.He laps them in,assembles it,then takes it back apart till they are perfect.
His list of clients read like a whos who of boating.
His list of clients read like a whos who of boating.
06-10-2012, 06:54 PM
#13
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06-10-2012, 07:34 PM
#16
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The gear ratios they offer are intended to keep the speeds down.They do have a new ratio for the M8 taller than the current 1.30 and 1.43.
As to the #6 horsepower ratings-i am living proof that they do live at 1800 plus.Several M8 owners have switched back to the #6 and gained substancial top end numbers thru lower slip.
As to the #6 horsepower ratings-i am living proof that they do live at 1800 plus.Several M8 owners have switched back to the #6 and gained substancial top end numbers thru lower slip.
So is it purely a performance change or are there failures with the M8's as the original poster questioned?
06-10-2012, 08:01 PM
#17
PF Marine
Platinum Member
Merc recommends the MTF because it can absorb water well. The torco rep suggested I use the RTF for a more severe duty application. For us, the MTF would get extremely dirty, and the RTF was marginally better. Matt at TNT sets our drives up as well. We will be trying the Bravo Shop NEO oil this summer.
06-10-2012, 10:24 PM
#18
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I would have to assume it is the performance and /or better selection of gear ratios in the #6.The M8 has a bigger gear set in the lower which makes the bullet bigger and requires bigger diameter props thus higher slip numbers.
06-10-2012, 10:29 PM
#19
That makes sense.......extra durability, but a speed surcharge.
06-11-2012, 10:38 AM
#20
The gear ratios they offer are intended to keep the speeds down.They do have a new ratio for the M8 taller than the current 1.30 and 1.43.
As to the #6 horsepower ratings-i am living proof that they do live at 1800 plus.Several M8 owners have switched back to the #6 and gained substancial top end numbers thru lower slip.
As to the #6 horsepower ratings-i am living proof that they do live at 1800 plus.Several M8 owners have switched back to the #6 and gained substancial top end numbers thru lower slip.
