Re: MF35 tractor with Chevy 6.2 diesel and Olds D

Posted by jdemaris on November 02, 2006 at 09:53:06 from (66.218.12.126):

In Reply to: Re: MF35 tractor with Chevy 6.2 diesel and Olds D posted by Bob on November 02, 2006 at 08:17:23:

Well - I offer no guarantees to the accuracy of that article. Some of the facts as stated certainly are suspect - but some of that may be due to the way the author chose his words and phrases. He might be a "non-tech" guy writing a story from a technical article. I do know that much of it is true though. But . . . in regard to your doubt about engineers having winter projects? Both my wife's parents are retired Ford Motor Co. engineers - and they told me MANY stories about such types of projects - not necessarily based on winter, though. Some sanctioned by Ford, and some not. One that I find particulary interesting is when Ford payed for a Ferrari - had it shipped to Dearborn, MI - where my father-in-law and a few other engineers disected the thing - mostly to check out, close-up, some of the assembly techniques and engineering features. One comment to me was - "what a piece of junk" it was. But, I think that judgement was based on the somewhat crude asssembly techinques - being more like a hand-built car than a Detroit mass-produced unit. They did the same with many Japanese cars and were extremely impressed with Toyotas (or Toyopet back then?).
And your comment, i.e. "WRONG... ALL Second Generation . . ." - what does that all mean? The first prototype engine was just that- it wasn't even the first generation, much less the second. I don't know what they used, but I read a similar account years ago written by the head of the Oldsmobile engineering department. I was interested back when the engines were current - since me - and several other Deere grease-monkeys were doing warranty work for a nearby Chevy dealer. It was very frustrating. We'd keep getting newly updated parts from GM - e.g. head bolts, head gaskets, Roosamaster umbrella seals and new-material weight-retainer rings - and NONE of it made a difference. I've heard, that later, things improved - but I was out of the picture by then.
And the other details?? Heck - I don't know. I do know that the Ricardo Brother's Comet swirl chamber WAS indeed used in the 350s as well as the 6.2s, 6.5s, my Allis Chalmers ED-40 tractor, etc. &c.
And Detroit injectors?? I have no idea if the author is referring to Detroit, Michigan, or Detroit Diesel Corp., or even something else? If he's a diesel-idiot - maye he thinks anything diesel can be called Detroit - kind of like using the word "Band Aid."
GM and high-nickel blocks - I know that was done many times. I've got several 1960s small-block V-8s that are high-nickel. Also, the first year of the 6.2 diesels - ca. 1982 - were high nickel.
And- V-8 Roosamaster pumps - I've seen them well before GM came out with the 5.7 diesel. I've seen them in Roosamaster version and Rotodiesel. I do NOT know if any were used on farm-tractors - but road -tractors - maybe?
Funny thing is - back late 70s when we had Roosamaster pumps crapping out left-and-right on 5.7 diesels - we were kind of stumped. We had our own pump shop and did not have anywhere near the problems when the same basic pumps were used on farm tractors, log skidder, dozers, etc. Roosamaster/Stanadyne sent out a service bulletin and claimed that the GM 5.7 diesel failures were due to the " high under hood temperatures" not nomrally occurring in farm tractors. And - GM/Chevy had service bulletins that said something different. They blamed owner ignorance and low-quality fuel. So ??? As time went on, the rubber material for seals was upgraded many times. But, the plastic weight-retainer was still used when the 6.2 came out (also used in the 6.9 Ford IH engines), and wasn't dropped until around 1985 when it was replaced with the EID.

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