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Brian Jasper co. Ia 
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Joined: 11 Sep 2009
Location: Prairie City Ia
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 Topic: 262 DIESEL PROBLEMS
Posted: 30 Nov 2009 at 11:16am |
Just talked to the machine shop that has my D17D head and they say that 4 of the pistons are hitting the head. 4 of them are clean on top and I thought the reason was from coolant washing them clean since there appears to be nothing imbedded in the pistons. They tell me they can offset grind the wrist pin bushings up to about .005. This is new territory for me. What now? Have the bushings offset? What about shaving the tops of the pistons? Where should the pistons be from the deck of the block at TDC?
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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DonDittmar
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Joined: 15 Sep 2009
Location: MIllersburg, MI
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Posted: 30 Nov 2009 at 11:31am |
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Experience is a fancy name for past mistakes. "Great moments are born from great opportunity"
1968 D15D,1962 D19D
Also 1965 Cub Loboy and 1958 JD 720 Diesel Pony Start
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Matt MN
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Joined: 14 Sep 2009
Location: Silver lake MN
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Posted: 30 Nov 2009 at 12:47pm |
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4 pistons hitting the head?? You better tear the motor down alot further, something sounds terribly wrong. I would say something with the wrong pistons on 4 holes. I have a 262 gas apart at the moment and all the pistons are about 3/8' below the deck.
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Unless your are the lead horse the scenery never changes!!
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Brian Jasper co. Ia
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Joined: 11 Sep 2009
Location: Prairie City Ia
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Posted: 30 Nov 2009 at 1:27pm |
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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TedBuiskerN.IL.
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Joined: 11 Sep 2009
Location: Davis, IL.
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Posted: 30 Nov 2009 at 4:01pm |
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On that engine the pistons do come above deck height, so head gasket thickness is critical. I'm going to do this from memory so don't hold me to it, but the number I remember is .021" above deck maximum.
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Most problems can be solved with the proper application of high explosives.
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Brian Jasper co. Ia
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Location: Prairie City Ia
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Posted: 30 Nov 2009 at 4:47pm |
Thanks Ted. I'm going to do some measuring tonight. I have a Fel-Pro head set. I'm also going to try the clay depth measuring test to see what I get. A while back someone posted that they had a custom copper head gasket made form a place in Texas I think.
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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Chris/CT
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Location: Niantic, Ct
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Posted: 30 Nov 2009 at 4:50pm |
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Gasket Works USA,LLC. copper@headgasket.com for custom copper head gaskets
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HD6GTOM
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Joined: 30 Nov 2009
Location: MADISON CO IA
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Posted: 30 Nov 2009 at 5:45pm |
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....BRIAN There are several different thickness of headgaskets available from Agco. Ck your serial # and make sure the 1 you have is right for your tractor. Mine was replaced with the wrong gasket and it cost me a complete overhaul.
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Brian Jasper co. Ia
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Posted: 30 Nov 2009 at 5:53pm |
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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D-17_Dave
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Location: Mocksville NC
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Posted: 30 Nov 2009 at 8:51pm |
My question is why are 4 out of 6 different from the others? Cyl. run out is critical on the 262's for proper head gasket seal. The piston run out will determine compresion and result in a clean, good starting engine or one with low compresion that your never fully satisfied with. Still, why are the 2 not matching up to the other 4.
Sounds to me that a complete engine kit is needed and decking the block, cutting new counterbores for the cyl's, and turning the tops of the pistons to correct the runout may be needed to do it right.
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MACK
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Posted: 30 Nov 2009 at 9:46pm |
Rod bearings are worn on the 4 pistons causing them to hit the head when the rpm's are up. Pull the pan and check the bearings.
There are 2 different head gaskets, a .035 for gas and a .065 for diesal.
MACK
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Brian Jasper co. Ia
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Posted: 01 Dec 2009 at 6:05am |
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Before the head gasket issue, this engine would start without any help down into the 30's. Some other thoughts I had were if the engine ran away once and the rods stretched. It does have dents from the inside of the pan and a hole that has been brazed.
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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Brian Jasper co. Ia
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Posted: 01 Dec 2009 at 6:29pm |
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I measured the old gasket .055. New gasket .066. I measured the stand out of a couple pistons. 1 of them was .060 the other .050. I guess it's down to block having been surfaced excessively, wrong pistons, or stretched connecting rods.
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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