R7 motor issues?

Ive been running beans the last few days, everything has been running great except a squeak,growl sound when seperators on. I ran a hopper a hopper then around 2 oclock after i dumped it started running a higher boost pressure and seemed like it was struggling. Couldn't hardly get over 3 mph with a 18ft head. Finally got the semi loaded and shut it down. Started back up 45 minutes later and it was still lacking a some but better, then around 6 to 630 it started running like it was the previous day, lots of power and not moving the boost gauge as much at 3.5 mph. Was todays temperature making it wierd or is there major issues coming? It burns about a gallon and a half of oil on a 9 hour day running beans, it that normal? Thanks in advance for any help.

Edited by Daehler - 20 Oct 2018 at 10:49pm

I think I'd be looking to see if the discharge paddles are still on the rotor or if the concave has dropped down at the rear. Something is WRONG. Figure it out.

I said the paddles on the end of the rotor !! This assumes it has the original style rotor as it had from the factory. Two rubber paddles on the discharge end. They cannot be bent backwards !!! They must be leaning into their rotation to scoop up the fodder to throw it into the discharge impeller. They might be GONE and not even there !!!!   THIS IS ON THE OLDER "P-1" STYLE PROCESSOR.   Leaving the R-50 throat covers on defeats the purpose of an R-7 combine....get them removed.

Four discharge paddles was someone's improvement to the P-1 rotor, so that shouldn't be the problem.  I can't help you without looking at it.  I'm thinking worn out helical bars or missing helical bars or worn out cylinder bars, etc.  Have you given the cage a 100% lookover to make sure there isn't a hole blown in it somewhere  ???   100% means top and bottom, front and back, side to side. That's what those doors are for inside the grain tank.

Ive been working on the machine a little bit and have some pictures to upload tonight of some wear areas that could reduce power. Also it has a crackle when started up, like an injector isn't firing. It sounds better after it warms up, but still sounds like a miss in it.
Im also installing a better bin fill auger and tube. Whats a good way to get the auger out? It doesn't want to unscrew from the ujoint.

R7s all had the Allis 516 unless it's been repowered. The 516 is a very good engine. It should've been in the larger tractors IMO.

My first thought was same as victoryallis

Taking the fillerplate out made the difference on feeding.
As for blowby, it has a little out from the breather tube but its not terribly bad. Haven't checked where the oil fill is in a since 17 but it didn't have much there then.
Rotor bars at feed chain are wore some, that could be some power consumption. They might have an eight inch wore off

That is some crazy oil consumption!