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L Head 230 rebuild
Posted: Sun Jan 17, 2016 6:56 pm
by TAK824
In my latest acquisition, I've picked up another T-245 engine to replace the seized one in the ambulance now. The condition of this engine was unknown, but in inspecting it, the engine appears to be in pretty good shape. Turns over freely, inside is clean, etc. On cleaning the engine off, I found an apparent rebuild tag, metallic type, glued to the oil pan, on the side. It is a "professional" type tag, like you'd find at an automotive shop. At the top it says "Engine Data". Below that is "work order" number 5016.2. Bore states 0.40 over. Mains state 0.20 over. Rods state 0.20 over.
My question is; does anyone recognize the type/name/data of the tag. And, what, if anything does having the bore be .40 over, with the mains and rods being .20 over, besides being a "bit larger" engine?
Re: L Head 230 rebuild
Posted: Mon Jan 18, 2016 12:08 am
by Cal_Gary
I don't recognize the tag name, but the data is telling you that the rods, mains, and cylinders were increased in size (from Stock) due to wear when the engine was rebuilt. Mine has a mil-spec rebuild tag dated 1969 from Aberdeen Proving Ground, Maryland.
Gary
Re: L Head 230 rebuild
Posted: Mon Jan 18, 2016 2:57 am
by HingsingM37
Usually the military tags were affixed to the block. I have not come across a tag on an oil pan. Hard to say, It could have been a shop anywhere. As Gary stated your engine has had some standard machining (I am sure you meant 20 under on the rods and mains). Best to measure with mics and be sure that all is in tolerance before buying parts.. Make sure to pull the freeze plugs as well . We just did one at the shop that allegedly was a " army rebuild". I found three 1/4-20 bolts inside the water jackets
Re: L Head 230 rebuild
Posted: Mon Jan 18, 2016 9:25 am
by 52PLOWERWAGON
HingsingM37 wrote:Usually the military tags were affixed to the block. I have not come across a tag on an oil pan. Hard to say, It could have been a shop anywhere. As Gary stated your engine has had some standard machining (I am sure you meant 20 under on the rods and mains). Best to measure with mics and be sure that all is in tolerance before buying parts.. Make sure to pull the freeze plugs as well . We just did one at the shop that allegedly was a " army rebuild". I found three 1/4-20 bolts inside the water jackets
I pulled my freeze plugs and found the same thing
Re: L Head 230 rebuild
Posted: Wed Jan 20, 2016 4:31 am
by just me
The 3 bolts was a 'feature'. Like sacrificial zincs on a boat. Eat the bolts, not the block. (BSEG)
Re: L Head 230 rebuild
Posted: Thu Jan 21, 2016 8:09 am
by 52PLOWERWAGON
never mind
they were casting chunks
now I have to go fishing in my water jacket
Re: L Head 230 rebuild
Posted: Sun Jan 24, 2016 4:13 pm
by MSeriesRebuild
Not necessarily a bad thing; however I always bear this in mind when undersized crank main and rod journals are a factor. Grinding the journals obviously takes strength away from the crank; while not likely an issue in a general application, it could be a much bigger deal in a pulling application such as using a snow plow or some other commercial / heavy use applications.
Re: L Head 230 rebuild
Posted: Tue Jan 26, 2016 2:52 am
by HingsingM37
just me wrote:The 3 bolts was a 'feature'. Like sacrificial zincs on a boat. Eat the bolts, not the block. (BSEG)
Not that I am the smartest guy on the planet(or is that the most interesting man in the world?), but I have never seen this in all my years of engine building. I have done many a flathead and that was the first time I came across steel bolts in a water jacket. I did once find a British Standard crowfoot left in a Leyland engine from the factory... LOL
Seems this would just add to the corrosion debris in the water jacket. The coolant cant tell which taste better anyway,,,
Re: L Head 230 rebuild
Posted: Wed Jan 27, 2016 5:15 am
by just me
I wuz pullin' his leg jus' a mite.
Re: L Head 230 rebuild
Posted: Wed Jan 27, 2016 6:02 am
by MSeriesRebuild
just me wrote:I wuz pullin' his leg jus' a mite.
While pulling one's leg a mite has its place, (I like kidding around as well as anyone, but) I try to refrain from doing that here when it is obvious folks are seeking honest, factual, info. I'll admit though that with some issues I read about here, makes it very tempting at times.