The "Ultimate" engine : BMW Motorsport S70/2 V12

[roger_ph]

Maybe you like one of those:
[img=http://img103.imagevenue.com/loc1135/th_253965084_P1060067_122_1135lo.JPG]
[img=http://img169.imagevenue.com/loc1179/th_539706978_P1060071_122_1179lo.JPG]
[img=http://img7.imagevenue.com/loc77/th_539757472_P1060072_122_77lo.JPG]
[img=http://img215.imagevenue.com/loc236/th_539809229_P1060074_122_236lo.JPG]

[LMMike]

Some of the best pictures yet! Thanks!

[LMMike]

The ITB's (black) under and connected to the bottom of the air intake, do we know what metal they are made of, any facts about materials anywhere?

[webslinger283]

Those are awesome, THANKS! I really love the one showing the throttle linkage at the back of the engine.

Originally Posted by roger_ph

Maybe you like one of those:
[img=http://img103.imagevenue.com/loc1135/th_253965084_P1060067_122_1135lo.JPG]
[img=http://img169.imagevenue.com/loc1179/th_539706978_P1060071_122_1179lo.JPG]
[img=http://img7.imagevenue.com/loc77/th_539757472_P1060072_122_77lo.JPG]
[img=http://img215.imagevenue.com/loc236/th_539809229_P1060074_122_236lo.JPG]

[Peloton25]

Originally Posted by LMMike

The ITB's (black) under and connected to the bottom of the air intake, do we know what metal they are made of, any facts about materials anywhere?

Fairly sure those are ABS plastic. I've not had my fingers that deep into one but I'd be surprised if they weren't anyway.

>8^)
ER

[LMMike]

Are you sure we are talking about the same parts? What I'm referring to connects to the engine where plastic would not hold up. I'm referring to the individual throttle bodies of the air intake; they plug into the top of the engine.

[Peloton25]

I'm talking about the parts these yellow arrows point to. I would put money on them being plastic.



ABS doesn't melt or deform under temperatures below 220F. It would be perfectly acceptable in that position under the air intake box. Every car I have ever owned had an ABS plastic intake manifold that bolted directly to the head, just above or next to the engine block.

On the F1 engine they have the benefit of being elevated quite far from the major areas of heat with the true throttle body inlets below them as a buffer from the engine.

>8^)
ER

[LMMike]

Thanks for the detail regarding the ABS plastic, I wasn't familiar with it.

However, those pieces truly are metal, I had them in my hands, that's why I wanted to know what kind of metal they are.

[Peloton25]

Aluminum or magnesium would make the most sense if you are sure they were metal. Still a little odd to hear that.

The Ferrari F50 has a very similar intake design - those exact same parts are plastic and (except for being paired) look nearly identical. There's a thread on FChat with descriptions and photos:

http://www.ferrarichat.com/forum/showthread.php?t=69507

>8^)
ER

[LMMike]

Interesting, they look very much the same. I should have said the ones I held were from the intake of the test engine. Perhaps they used metal on that intake and ABS plastic on the final design, but who knows. I'm certain they were metal though. You could be right regarding the final version Erik.

[Peloton25]

Was this the piece you are referring to? Because the pipes on this one do appear to be metal as opposed to plastic.







>8^)
ER

[geeky]

On a non XP roadcar they are definitely plastic. Not physically checked a 95 or 96 GTR but presume they will be the same. a 97 might possibly be different but haven't got one next to me to check

[LMMike]

Originally Posted by Peloton25

Was this the piece you are referring to? Because the pipes on this one do appear to be metal as opposed to plastic.







>8^)
ER

Yes that's the one.

[roger_ph]

Originally Posted by webslinger283

Those are awesome, THANKS! I really love the one showing the throttle linkage at the back of the engine.

I am happy that you like them

[Le Man]

That airbox, looks like the very early type fitted to Edward test mule, interesting to see all the detail changes made to the production version. The carbon air boxes were not made by McLaren, they were made in Germany, by a contractor supplying BMW.

Erik would you be so kind to combine this thread to my Engine thread I started some time back. many thanks in advance.

http://www.automotiveforums.com/vbul...ghlight=engine