Re: We're ready to torch this 656. Help please!!!!

Posted by the tractor vet on April 27, 2006 at 08:07:07 from (64.179.117.83):

In Reply to: Re: We're ready to torch this 656. Help please!!!! posted by george md on April 26, 2006 at 22:19:59:

George , i don't care if you are a dealer forthem or not as i use to be a dealer the cast pistons are junk period the expanchion on them is unreal as i have been building tractor engines for along time and this problem started after they dropped the forged pistons and yes they will run at and ideal sometimes . Now if ya think i am kidding go build up any 6 cylinder gasser and just stuff the pistons in don't worry about clearance it and sizen it then go put it to work under full throttel and full load and we will just see how long it will run before it seezes up . the old zolnar pistons were forged and where what was in them from the factory and you could hog on them all day long and never seeze one this all started with the cheep cast one and don't set there and tell me that they are so great along with the new head gskts mat. just see what it takes to seal up a head on one now adays even if ya deck the block and mill the head with new head bolts copper coat or what have ya they seep from just tinny bubbels comming out between the new and improved material to coolant squarting out . We never had this problem with the OLD gskts with asbetous now how do i know all of this well because i have been around for a long time and i have seen these problems from the start . I had one 706 that i put three new differant head gskt on and had problem s tryen to seal and when i put a factory NOS asbestous head gskt on it stopped leaking And the last set of pistons that were NOS FORGED ZOLNAR FOR 291 did not seeze up while out plowen on a hot fall day in vary hard ground . And as far as not getting enough fuel well on the any of the gas carbs after the 560-660- they all have no adjustments to set the main jet as when the key is turned on the fuel shut off selinoid opens the main jet wide open now unless their is dirt blocking that jet or the total advance timming is to far ahead or the coil is junk or they have a manifold leak or they are running a 87 octain gas that has MTB or ethinhol the tractor should perform as per spec. I have seen with my owen eyes that a clevit CAST PISTON swell over .025 above the top ring and score all 6 holes with the worste being on 1 and 6 and this is on a hand fitted engine with .0035 skirt to wall clearance . and the brand new in the box Clevit CAST pistons ran up to .0075 from each other in one brand new kit shipped to my door from the warehouse . Now i have spent a bunch of money on tryen to solve this problem when if first started to happen with a lot of phone calls and LAB testing that does not come cheap and i learned that between the Cast piston and the JUNK fuel is where the problems lie. Around my area we still have a bunch of gassers on the frams that work everyday not a play toy but as a mainstay tractors that are run everyday and i have seen more then my fair share of problems with gas tractors . Now if everybody would just read the Operators books and READ THE SECTION ON FUEL REQUIRMENTS CLOSELY then a bunch of the problems will go away . You have to keep in mind that when the bulk of the 6 cylinder tractors were built that regular gas was of 95 octain so back then almost all the suppliers shipped to the farm 95 octain gas as REGULAR gas the only gas that i can remember of not being that hig was GULFTAIN AND SUNOCO 190 and that stuff would make a old junk 6 cylinder chevy knock and ping. Now here we are today with the price of gas getting sofar out of hand that we are all looking for a way to save what ever we can . I have spent a good many years specializen in I H tractor repair and on the tractors that i work on i know them inside and out and all there quarks so when i come on here and tryand help a guy out it is from my knolage and experance and there are times that i am wrong as i sure as heck am not perfect as i have had my screwups .

Replies:

• Re: We're ready to torch this 656. Help please!!!! george md 22:44:22 04/27/06 (0)
• Re: We're ready to torch this 656. Help please!!!! MN Scott 09:56:48 04/27/06 (1)
  • Re: We're ready to torch this 656. Help please!!!! the tractor vet 10:26:30 04/27/06 (0)

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]