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Quote:

Originally Posted by HaxbySpeed (Post 4208868)

Yes. A bit of a hijack, but kind of related because it's where our blowers came from. The 2 stroke detroit's are incredibly durable engines, and very well engineered. They were built to be universal, the front can be the back, anything from one side will fit on the other, you can join them together, throughout the same engine series almost every part is interchangeable. Compound supercharging was common practice (turbos feeding roots blowers). They were never intended to be a long term use engine, but were so well built they just wouldn't die, and gathered a very strong following, only phased out many years later by more efficient, environmentally friendly engines. Speaking of engineering, modern performance gas engines have nothing on 1950's diesel tech. Overhead cams, shaft mounted roller rockers, piston oilers, bushed solid roller lifters, turbos, etc. Sounds Familiar huh?

I was thinking that last night when you guys sparked me to read up on those vintage diesel engines. Man, the engineering they were doing back then. I find it very impressive, those men from that era, really had limited resources, and yet, were so innovative. Pretty awesome.

Quote:

Originally Posted by Black Baja (Post 4208797)

Hey take it easy on them iron heads. Compared to the other manufactures Chevy was King.

I dont know man, the LS6 head vs the Hemi head? Or Fords SOHC heads?

[ATTACH=CONFIG]531502[/ATTACH][ATTACH=CONFIG]531503[/ATTACH]

alex,in pic 1 does the exhaust come out in the center on top?also,what engine is it and what is the application?very interesting.

I don't want to hijack this thread so I will be short, some of the older ferry boats that run the straits of Mackinac still us these Monsters, I had a chance to go into their shop and look at their spare engines. very impressive for sure twin Turbos feeding twin blowers on a v-12 platform. I like to take these older slower ferrys to the Island just because! but it did make me think of the pioneers of racing taking these blowers off the Detroits and modifiying them to fit the 4 strokes. At the time I was running a roots on my boat. Made me respect their Heritage. Done now.

Great thread Joe!

No worries about hijacking. The purpose of these threads is to lead to good tech discussions. And with you guys chiming in its always a worthy read !

Dam thought I was sweet with my 177 blowers,now I have blower envy.

Quote:

Originally Posted by mike tkach (Post 4208877)

alex,in pic 1 does the exhaust come out in the center on top?also,what engine is it and what is the application?very interesting.

Yes it does. That's a 1954 GM EMD 2 stroke train engine in a 110' tug boat, and she pulls like a mofo.. The 567 series, which is 567ci per hole, was the earliest and smallest version of these engines. I think they were designed and first used in trains in the late 1930's by the same guy that developed the smaller detroit 2 strokes. The later versions are still commonly used in trains today. One of the other boats up here has a pair of 20cyl 710's. They make abour 3600hp each. There are also some four stroke engines made by other manufacturers, that copy the basic engine architecture because it is such a good design.

Quote:

Originally Posted by MichiMike (Post 4208899)

Dam thought I was sweet with my 177 blowers,now I have blower envy.

same here, i had a pair of 525SC's for years and thought they were the shiz, ran pretty much flawless and turnkey for nearly three hundred hours. Was planing on building a pair of clones for the 38 Scarab but on chatting with the builder its prolly gonna be BM 250's (or similar) for a multitude of reasons. I had always thought a cooler and pulley would have been a good mod for the Donzi but see now that the 525SC's was a comfortably well thought out and built engine but not a whole lot of room to grow with that set up. I will say one thing i did like the whine they put out lol.

Quote:

Originally Posted by MILD THUNDER (Post 4208869)

That was when our country was 80% manufacturing. I'm making up that #....but.....we where full on industry.

Manufacturing was relatively cheaper and we had a workforce that didn't mind working labor and getting dirty.

Big difference from now where we all want office jobs.