gazza01

I scored an Subaru EA81 engine that has been bored out to take 0.50mm Pistons just need to know what size rings I should be using.

Is its safe to remove the old Camshaft Gear from Suby EA81 heating it using a Oxy/Acetylene torch, or is there another way, These Camshaft Gears on the EA81 are fitted using heat and they are cast metal and break up under undue force. Ive got to replace mine.

I got a box with some EA71 rocker arms and put them into a spare EA81 cylinder head I had, The EA71 rockers fit ok, and the two holding bolts side into the EA81 cylinder head no probs, so I assume they would be compatible with the bolt pattern on the EA81 block. Its Just that I read occasionally that these rockers arms are not compatible, however going through the specifications in Haynes and Gregorys manuals on 1600/EA71 and 1800/EA81 engines they do not mention any differences in the rocker arms. I dont have a spare engine block to compare at the moment--Any comment out there.

Thanks Guys .

I put rear Disc brakes on my Brumby but I don't think the current Master Cylinder, or Servo unit are 100% up to the task when it comes to hard on emergency braking. Anyone out there who has any info on an upgrade. Sometime back I got a Servo off a Suby Outlook, but couldnt get the Servo unit past the inner Strut towers. i

I have a 13/16 Nabco Brake master Cylinder on my Brumby and it starting to leak, and Im finding it difficult to find a replacement , is there any other master cylinder that I can use thar is compatable with the current Servo unit.

18inch of 4x2 and a big hammer. Once u have the cylinder heads off u can stand the ea81 (Im not up to the ea82s) engine on a piece of thick cardboard to protect the Cyl head bolts and let loose with the big hammer works to a point but a LOT of that SPECIALIZED WD40 helps. Seized engines are a nightmare I find generally its only one piston thats seized that usually the one that holds the oil. If u have 2 pistons on one side where u can get the Gudgeon pins out its a start. Find the rogue piston and "Safely" stand the engine upright with that Specialized WD40 on top. I pull the Gudgeon pins out with a Dent puller slide hammer from Temu with a 12x125mm Dynabolt pulled up tight in the Gudgeon and attached to the thread with a long bolt at bottom of slide hammer.

I'll give that liquid nitrogen a try IF I can find place to buy it. Maybe last resort freezing water .

I seem to be getting a lot of ea81 seized engines of late, always just the one piston that is totally jammed hard. I find it always impossible to get the Gudgeon pin out of the seized piston, meaning I have to split the motor and try unbolt the connecting rod to the seized piston, and then try to drive the seized piston out with a piece of timber and a big hammer,- sometimes works. If the piston is totally Seized nothing Im using seems to work has anyone out there got any ideas.

Just finished putting rear Disc Brakes on my 92 Brumby feels lot safer vehicle stops quicker and all 4 wheels feel like they are working together. Got most parts from Rockauto hardest part was the rear dust/stone guards eventually get a st in the US and not cheap.

There is NO difference between ea71 and ea81 pistons I have pulled down both motors the Pistons are the EXACTLY same dimensions, gudgeon pin dimensions etc are the same. Both pistons are 92mm. EA71 has a 60mm stroke and a 111mm Conrod centre to centre , and the ea81 a 67mm stroke and a 117mm conrod c-c. The engine block of the ea71 is 345mm and the ea81 370mm. EA82 pistons are 92mm and compatible with both ea71 and ea81 motors. EA82 Turbo pistons are 92mm and they are recessed on the top and are a non event in a non turbo motor. To get the extra performance from Turbo ea82 pistons the engine has to be fitted with a turbo.

I know now why it costs so much to get a Suby motor reconditioned, as you go through the motions you begin to wonder if its worth the trouble, just pulling the old motor apart, getting the Gudgeons out and separating the two halves is mind bending. My biggest problem is separating the two halves anyone with any tricks would be appreciated.

I had problem with connecting rods in my ea81 motor I sourced an old ea81 motor and got the conrods out. Pretty sure they are identical with ea82.

I have 2 ea71 seized motors I managed to get the Gudgeons out of 3 of the pistons in one motor, the 4th piston and Gudgeon are truely seized. The second motor the pistons wont even move, ive been tempted to force then with a big hammer and piece of timber in an effort to remove the Gudgeons and split the motor to salvage a few parts only other option I guess they will end up at the scrap metal yard.

lI got a new oil pump repair kit for my 91 Brumby I'm ok with most replacement big rubbers and gaskets just 2.small circular rubbers one is thicker and smaller than the other larger thinner one I need to know what is the correct position of each of the 2 rubbers.