Just another cracked block

Hello all. New to this forum but not new to my TO30. Had it quite a while but it has not been running for some time. Got it running pretty good now.
Trying to bring it back to life and have found water in the engine oil. Don't want to pull it down yet, thought I'd try the KN block sealer a try first. Is anyone familar with it and how many cans should I try? I know the directions indicate one can but just in case of several cracks etc., should I try two cans? Also, could the sleeve o-rings be bad or just gone or cracked, and where are the o-rings located, at the top or bottom of the sleeves. If at the top, can they be seen when the head is removed? Thanks

i've seen lots of guys try it but never seen it succeed.

before you do anything, figure out whether it"s the o-rings. They are located at the bottom of the bock. Drain the oil and let the tractor sit overnight.Remove the pan and put a clean piece of visqueen underneath the block let that sit Then look for antifreeze drips on it. Also look up at the bottom of the sleeves for signs of antifreeze. If you don"t see anything there than it"s off with the cylinder head to look for crack in the block between the cylinders and also a cracked head.

If you will look in the archives I am sure you will see where some have used the sealer and I remember at least one was happy with the results as it had been two years and no water getting into the oil. There may have been more but I can remember one now.

Yea i had a TO30 and it leaked between the frist two cylinders. With air hose turned down to about 15 lbs. i put it in rad. and watched water drip. The problem with that motor it is made from the TO20 block then bored larger making the cylinder walls thin,make sure you have good antifreeze. There are good products out there that will work.

You may get by with a re-torque on the head,check 1 or more of the exposed ones and if they are out of spec then pull the rocker and do all of them.

Very often this problem of cracks is caused by overheating, when did you last clean out the matrix of the Radiator. You should wash this out from the Engine side towards the front with a water hose with not too much pressure or it may damage the radiator. Make sure that you wash all over the surface getting into the corners and especially the middle, check that it is all clean using a light at the back. This needs to be done quite often, sometimes a couple of times a day in bad conditions if you are mowing as any grass floating around is sucked in and very often sticks. Remember that there is only 2+ gallons of water in the cooling system and any grass trapped in the Radiator acts like a fur coat and keeps it warm, it cannot cool sufficiently with all that grass in there. Removing the Thermostat is NOT the answer. You should also look over the Tractor for rusty water marks around the Engine and the Radiator, this means there are leaks and unless the system is pressurised it will overheat quickly.Always use Anti-freeze or a rust inhibitor all year round to prevent corrosion internally. Checking the Ignition Timing and the Carburettor settings will also help to keep it cooler
If you do use a Bush-Hog I can send you a list of things that you should consider doing when using one of these machines with a Ferguson Tractor, mainly setting it up correctly and general maintenance and this will make a noticeable [email protected]

i used "bars leaks" once. worked great until i put anti freeze in for the winter.