Nauti By Nature

building new motors for my 38 fever with xr drives

will they be able to stand up to 850 hp without modification

if I keep them in the water as opposed to in and out of water !

Any worthwhile changes that can be done to them ( old style xr's).

Thanks

marinetrans

The MAXX Machine tower, clutch shaft , billet top cap and non-full compliment needle bearings w/ your XR gears.Seems to last the longest of all setups.

Nauti By Nature

what will that stuff cost about? and what type of hp rating would it have?

marinetrans

Somewhere around 4500.00-5000.00 w/ new xr gears and a Max joint set up. Expensive but pretty stout.Same power you are running,knock on wood,they have been excellent.

Strip Poker 388

iTrader: (6)

Wish I was your drive guy$$$$

All the bravo style drives will break soon or later with that power.All!

marinetrans

The trick is to find out before it happens. Reading magnets,color of lube and recognizing shifting problems help.XR gears are not known for their longevity but the near net forging makes them the strongest ones to date.With the stock race tower there is .010 to .015 of deflection and the gear/needle bearing (full compliment) acually "chatters". The Maxx tower has nearly no deflection of the gear, using a non full compliment needle bearing.

marinetrans

How about if he pulls 4 plug wires off.

RBeyer

Haa Haa, Sorry.
No way you will need to modify or replace.

NJSONIC

Max Machine-They wont last on a 38'-with 800hp. I know!!!! Konrad ACE's do!!!!!!!!!

Nauti By Nature

how many horses are you putting thru the ace's ?