Gearing for Turbo

[TREE_MAGNET_777]

I have been gearing my sleds down for years to save my belt life. I only ride in the tree's as avy danger is less and have had my share of slide ride's. My old M7 was geared at 53/67 and loved the reduced belt heat and grunt of that gearing. I try to get a 1-1 ratio at 40 mph track speed (most contact of belt to clutches) as to reduce heat and slippage. This was great for my NA sled. Now the Question I have is what is the REAL track speed of a Pump Gas turbo on a M-8 as I wish to gear 1-1 for this sled??? According to my service Manual if I gear to 54/66 my Max speed at 8200 rpm will be 85 but I wonder if I gear down will that increase lag or will it have any effect on it???? I will be opening up my DD to install the Bigger Bearing into the Planetary and At 200 buck a pop only want to by one set of gears. Any suggestions??? Thanks Garry

 

[SnowDevil]

Ive playing with this same thing since the 1000 are terrable on belts. I ran my 07 turbo 56/64 and I just ordered the same for my 09. My thoughts on the lag is that it helps come out of the whole better so the lag isnt as noticable.
I was just on the phone with black diamond and if the clutches and extroverts are the same your 1 to 1 will be in the low 70's with that gear ratio. Im right at 80ish with the 56/64. Im running race so you may be good with that gearing since I dont think you will make 80 too often. wieght and other things will effect that also.