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IH1466

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Walt7777777

03-12-2007 00:50:01

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I am looking at my parts book and am trying to tell the difference between a D436 and DT436. Does this mean that the DT is for an engine with turbo injection. Sorry for a dumb question.

Any help appreciated.

Thanks,

Walt

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Walt7777777

03-12-2007 04:29:25

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Re: IH1466 in reply to Walt7777777, 03-12-2007 00:50:01

Thanks Owen, just wanted to be sure before I ordered parts.

You gave me some advice a week or so ago about my 1466.

I finally got it apart and the sleeves are pitted near the o-ring seals, so I guess they all will have to be replaced.

Not sure if they make a piston/sleeve set, I will be calling the dealer soon. The head looks good and it had excellent compression before I tore it down, so I guess it is ok.

I can't believe that the sleeves are pitted like they are, some of holes go 1/2 way thru. I have a anti-freeze filter on it.

How ofter should the anti-freeze and filter be changed? This engine probably has less than 1000 hrs on it since the last rebuild. Is this normal?

Any advice/comments most appreciated.

Thanks,

Walt

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JDknut

03-12-2007 09:03:58

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Re: IH1466 in reply to Walt7777777, 03-12-2007 04:29:25

Sleeve pitting is endemic on Internationals, even in some parent bore IH V-8 blocks. It also happens on other wet-sleeve engines, I had it happen to my wet-sleeve Deere. It is caused by cavitation erosion and electrolysis. Cavitation erosion is when little bubbles form in the coolant due to sleeve vibrations and then pop against the outside of the wet sleeve at it vibrates, this causes little implosions that blast away at the outside of the cylinder liner. Areas that are weakened by corrosion or electrolysis (which is a form of corrosion) get blown away first, until the cylinder pits thru. The answer to this is to run a coolant additive to prevent it from being corrosive. The water filters that IH uses have cartridges with additive but as the additive gets used up out of the cartridges, they lose their effectiveness. On yours, sounds like nobody changed the water filter. Just keep up the antifreeze with the proper additives and keep the water filter cartridge changed and you'll be OK. HTH

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JDknut

03-12-2007 09:08:32

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Re: IH1466 in reply to JDknut, 03-12-2007 09:03:58

PS: Pitting shouldn't happen on an engine with only 1000 hours, on mine it took about 7000 hours. Maybe they didnt do the complete sleeve renewal or used really cheap grade sleeves. Re: changing the filter, follow the operator's manual or dealer's instructions, but I think it might be once or twoce a year. also change the coolant at recommended intervals.

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Walt77777777

03-13-2007 04:22:26

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Re: IH1466 in reply to JDknut, 03-12-2007 09:08:32

Thanks for the information, I have ordered new sleeve kits from the dealer. I believe that a really cheap kit was used, maybe something from China. Guess you get what you pay for. I also ordered all new filters and a few extra coolant filters. Hopefully, it will last more then 1,000 hrs this time. Seems like they could have found a better cure for it, like a sacrificial annode or something along that line.

Thanks again,

Walt

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Owen Aaland

03-12-2007 02:32:17

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Re: IH1466 in reply to Walt7777777, 03-12-2007 00:50:01

Check the parts used for a 986 to see a non-turboed 436.

You are right in that the T is for turbo charged. The plain 436 is NA (naturally asperated). To confuse thing a little more all the blocks have a T stamped on them. The turbo block will have two Ts. The blocks will be stamped something like 436DT or 436DTT.

Differences include cylinder head, pistons, rings, oil pump, water pump, number of piston cooling jets. There are probably some that I missed too.

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