It is available now

Your XR drives will be protected thru a ECM controlled limited torque up tp 3700 RPM

ask Ray @ raylar for a qoute

www.raylarengine.com

requests in Europe go to

[email protected]

So after 3700 rpm, bye bye XR's? What HP are the imco's rated at?

Is the amount of torque still increasing after 3700 RPM ?

According to the dyno chart on the original post, it is.

LE forgot to tell you that, to get that speed, he also has a band of Hatians that travel with him to row those few extra mph's outa the boat...................... :)

So... am I a hatian now???

:) Just saw the data. The first post indicates the limit to be 3900 RPM, but probably 3700 RPM is more accurate since torque does indeed pick up at 4000 RPM and above.

Row.......... Row.............. :)

What can XR drives handle from the factory? I just talked to a guy with a Donzi 26ZX with a blown 502 mag @ 780hp on an XR? Seems way too high I would think...

The XR is rated from Mercury for 600 HP (Gas not Diesel)

Several boaters use an XR with higher horsepower
some are succesful, some not

Some people manage to break an XR with much less HP by simple abuse

It depends how much torque you give to the drive and how hard.

One big concern is full throttle when planing the boat

This gives a lot of load to the gears and sometimes causes failure

Thats the reason why we limit the torque up to 3700 RPM

You cannot limit the torque above that RPM or you will never get the requested horsepower

We upgraded our drives with Teague Platinum parts

Teague warranties their Platinum XR Drives even on their 800 HP engines