This method for constructing engines goes way back.Mercedes used it for their 1914 GP car such as was used by Lautenslager to win the french GP with car number 2.

Udo, I was dead serious.
Is "steel" another one of your mistranslations and you actually mean something different?

Again, what you have written so far is no proof, it is just the usual unsustainable claims.

steel , ST60-2 . Material Number 1.0060 .
buy some books . for example Helmut Hütten .
I do not need to show any proof , I am building things like this for 25 years .
And John Barton knows about , so maybe John likes to tell more about it .

Please all keep in mind the sublte differences between definitions, rules, terms and meaning of words in German, UK English, US English, and all other participants from other countries, who's native language is not English (neither is mine)

I know a joke:

In a bar are a German, a Frenchman, a Dutch guy and an American.

They are discussing French cars, in English language, and most of the available info is in UK English.

The German guy says:.......

Get the picture?

Best regards,

Herman, the Tower of Bable housekeeper.

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Vive la Marque !!

Herrman , about your question , how is it made . Best way , CNC machine the block from steel , weld the water jackets on and machine all over . For sure , it cost more, but no cracks . And more power !

More power? Interesting! Is that the reason this method is currently not used in F1 where cost is no objection?
Bugwrench

look , if you look at a normal cast iron block , the intake and exaust is casted together , what is a big mistake . So the hot exaust is heating up the intake . In steel you have space between with water and get much colder air into the cylinder . Colder air - more power .

Now I understand. That is why it is not used for real high performance engines like F1!
Not very convincing to put it mildly.
Another point is that even the less technical educated BB readers will understand that what you write above is only valid when it concerns engines with parallel valves. In that case there is too little room for a water passage between intake and exhaust ports whether it is a casting or a welded-up item so that does not make much difference. Be aware though that all Bugatti twin cam engines do not have inlet and exhaust ports cast together so these engines gain enormous amounts of power even with cast iron blocks!
Bugwrench

we talk about t44 blocks ! not F1 , twin cam or what ever .

Now come one, I was expecting some engineer literature/data and all you come up is the Huetten book, that can be best described as a book for the technically interested hobbyist. I had this book at the age of 15...

By the way, it is the Hack/Indra "Multi-valve Engines" book you´re referring to, not the Huetten book.

Well anyway, if you would have read it properly it does not mention a steel cylinder block or cylinder head but a construction consisting of a cast iron cyl. head and cylinder liner, both bolted together. The outer waterjackets on this engine construction were welded on steel sheets. That construction originated in 1914 (well done, Lazarus!) and was maintained up until the Silver Arrow race cars.

However, I don´t want to question that there may have been some desperate engineer before the 1920s struggling to overcome the limited physical properties of the generic pearlitic cast iron with phosphorous eutectic (deriving from the times of steam engines and canon manufacture) that was used for engines up until the early 1920, but this is not to my knowledge.

The vast majority of CE engineers used the latter material, not even the malleable iron that was also available at that time (ductile iron came on the market after WW2) ... and they knew exactly why!

Don´t disrespect the old engineers and foundrymen, they had an unbelievable knowledge for their time and you should also not forget that mechanical engineering R&D literally "exploded" after WW1, making an alleged use of steel in some engines completely obsolete.

Not too long ago I visted an excellent fine-casting foundry who produce cylinder heads & blocks for two current F1 teams. They´re investment cast in aluminium with computer controlled solidification (they have a patent on this process).
What do you reckon, should I warn them of their terrible mistake ?!

OK, but I mentioned already that a T44 block does not allow room for that waterpassage even if you used welding techniques. Feel free to try but I can not recommend it.
Bugwrench

show any engine you made , I mean made .

Dear mr. Udolahr,
Herman has asked us to keep it nice and that is why I will not continue this discussion for obvious reasons.
Bugwrench

I think it is OK to ask this question . If thinkfish knows everything , he can show something . If he can not show anything .........................
But you are right , there is no reason to continue this discussion

Topic closed.

If the topic starter wishes to open another topic on T44 overhauling, he is free to do so.

Till so far the only useful comment was that the BOC has an overhaul manual. I suggest all contributors to be more on-topic and helpful.

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