Need some input here people. Have been trying to help out Kevin with his Land Cruiser conversion.

Got to see it complete today for the first time. Exceptional workmanship and attention to detail. Other than feeling like you're riding a pogo stick (big tires and really big springs) everything works the way its supposed to, except when the tranny fluid gets above 205 degrees. Reverse decides to leave town.

Thought it might be line pressure, but other than backup mode, the trans shifts normally with clean crisp shifts. He is controlling it with a Beauman Controller (US Shift) and it allows a laptop to monitor the tranny during operation. Even allows you to modify the program on the fly. The controller is doing everything its supposed to at the right time so don't suspect the controller and as there is no electronics involved with reverse, other than line pressure, suspect all is well from a bits and bytes point of view.

The tranny was overhauled by LenTech here locally (well known guy in the Ford game with a bunch of patents for the AOD) and they have been more than helpful with the conversion. Will be contacting them on Tuesday (holiday here on Monday) to get their input and we will be contacting Beauman just in case they have run across this issue before.

Only thing I can think of, is the trans sat on Kevin's floor for close to a year before he installed it. Perhaps something dried out in the interim or the reverse band actuator is binding after it warms up. Cold it works perfectly and the issue only rears it's ugly head after the tranny fluid gets above 205 degrees.

Something is definitely engaging in the tranny when you put it in reverse but the rest of the drive train doesn't seem to get the message. Played with the shifter a bit in the reverse position a bit, suspecting linkage, but to no avail.

Could really use your help as it is a total shame that after 8 years of work and enough money to help out a third world nation, that Keven is stumped at this stage. The irony of the whole thing is that he made a concerted effort to keep everything as mechanical as possible and the thing that has us stumped is the only part in the equation that requires input from a puter.

Really appreciate any input you could give. Something isn't adding up here.

Bill