Re: T. Vet. - Re: Your 450D Dilemma

Posted by the tractor vet on March 18, 2006 at 20:51:34 from (66.202.111.67):

In Reply to: T. Vet. - Re: Your 450D Dilemma posted by Smitholm on March 18, 2006 at 16:24:46:

No that will not work first off the block is larger then a gasser . Now yes it could be the head or it could also be the block as i have seen this more then once that the block will crack up and down in a cylinder and not leakwater but when warmed up it will put comp. in the cooling system . It can be fixed but it is not a cheep fix it will require a total tear down and machine work and a total rebuild . Now for the head it can be fixed or try and find a good head and have it pressure tested By someone that realy knows what he is doing when the head is cold alot of times they will not show the crack . The prpoer way of testing one of these old head is to fill the head with water and block off all water passages then pressure it up with air to over 80 lbs then add heat to warm itup then if it is bad it will look like old faithful just putting air to it and sprayen it with soapy water and looken for bubbels just don't get it . I had to show the guy that use to do my machine work as he had the equipment for pressure testing and went to there school to learn how to use it i set a head that i new was leaking someplace and he tested it and told me that it was good and i asked him to show me well he showed me the new way then i showed him the old way that i was taught way back by some of the old diesel mechanics and when we did it the old way as soon as that head got up to about 150 degrees she started shooten water out in the combustin area next to the exhuast valve seat . set the head out and had it fixed .

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