F1 Engine Valves - A Closer Look - Ep 19
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- เผยแพร่เมื่อ 24 พ.ค. 2023
- Ep 19 where we take a look at the Formula One Engine Valves.
Found a pair of valves on the shelf which in turn resulted in an unexpected episode that turned out a bit longer than intended...
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Always stay curious,
Brian, - วิทยาศาสตร์และเทคโนโลยี
Word at BMW was that they put a lot of their knowledge gained from the F1 program into the development of the S1000RR motorcycle. Which might explain a bit why it was way ahead of the competition when it was first released in 2009 - despite BMW never making a bike in that class before.
And copied the Suzuki GSX-R1000K5
Sure but keep in mind BMW was always in a class by themselves when it came to extracting every kernel of power out of a NA engine. They are able to achieve stratospheric BMEP's from a given volume throughout a wider band than anyone else, Porsche included.
@@rafaellastracom6411 How are they a class above any other 200+hp litre bike today?
@@maisteer I was referring to the whole bike. It was well reported at the time that they used the Suzuki as a reference for the design.
@@donr62 They don't give up torque in the low to mid range like everybody else. Suzuki comes close with their cam phaser but everybody else has little down low. Apart from the Shift-Cam system BMW always seems to be able to generate high BMEP's just about everywhere in the rev range. Their handle of combustion efficiency is a step ahead of everyone, including my beloved Honda.
I really appreciate you making videos like this. I have enough machine tools to make almost anything I want to and your videos are fuel for my imagination. Thank you.
Dirty hands are a brand of honor..... Thank you working man
8 Hr long vid! Yes please!
I knew a guy who used to go 'fishing' with the sodium filled valves off of WW2 radial engines. He would take a hacksaw with him and cut a nick into the valve stem and then fling them into the lake, and collect the resultant dead fish that popped up to the surface. This was like 60 years ago so there was no EPA or anything like that to spoil the fun.
Hi Brian, big thanks for the channel very informative and like a modern TH-cam version of the Carroll Smith's books
Glad you like them Kev!
Great job of keeping the video down to 20 minutes 😂😂 But who wants a 20 minute video from you, I'd prefer 2 hours! Great videos, thanks so much.
Thanks mate! Great video!
Nice video again! Thanks! Colsibro is the valve guide material. A copper nickel silicon alloy. I make watch cases from titanium, Grade 2, so almost pure. One time I had it burning in the chiptray of the lathe! btw I use carbide cutting tools meant for aluminium to machine titanium. This works very well.
Thanks for sharing the info! I was curious if you knew if Colsibro or any other copper alloy was enough to prevent galling? I would guess modern f1 is just using DLC etc coated Ti valves?
@@th600mike3 I don't know that.
Very interesting
I have a set of titanium Delwest valves sitting here out of an R07.. 2.200 x 6.080 with a 6mm stem. Interestingly the tulip is DLC coated but not the stems.
Amazing they've got these big 2.20 head valves on 6mm stems as well.
Fantastic thanks I guess Titanium would be tricky to weld too, it would have to be done with inert gas
Del West, friction welds their valves, NASA accepts their procedure .
Hi Brian. For interest. 1997 Jaguar AJ-V8 has 35mm intake valves with 5mm valve stems. I think your R1200GS standard intake valve is 36:5 mm. Real "penny on a stick" territory. Maybe 7:1 is *about* the limit for production road engine valves.
Many years ago when working for an engine company East of Ireland we experimented with ceramic valves (not an F1 application). They didn't spend too long looking and never seen them in any application since
Might as well test wooden valves! 😂
minus the step on the inlet valve and the retainer groove surprised how normal the valves are. Pretty standard for most modern engines to have a 6mm stem or smaller that's waisted towards the tip and titanium replacements are getting very common in the aftermarket industry as well they aren't even expensive anymore
Any chance you can do a short video on general issues of valve construction types? I understand there have been attempts at valves with both hollow stems and heads being welded together. Love to pick your brain on the matter.
Gooood videeoo agaaain. 20 minutes LOL
9:37 - 14;25 - not sodium filled, got it
agree. so so much rambling.
thanks Brian! Now I know a bit more about my Ferrari F2004 intake valve. I was also quite baffled about the purpose of the valve ridge/groove - it definitely didnt feel like anything helping with sealing. Thanks a lot!
Is there not a corresponding ridge in the valve seat?
@@finlaymcdiarmid5832 No, the ridge is just inside the seat ID.
@@EngineeredtoWin i read a book by Alexander bell, this was a mid nineties edition and it talked of the ridge you described and how you could machine it in etc, with a corresponding ridge on the valve seat. Is this the same idea? Probably.
Would you recommend his books?
@@finlaymcdiarmid5832 No ridge on seat in this case.
Brian, please increase volume on your vídeos even if you don't have new microphone, it's hard to hear you... it's not about about audio quality but about audio volume for me..
And stop excusing yourself in every introduction, your vídeos area amazing, get straight to the point, i don't like to scrawl first 1/4 of video listening you explaining the cannel every time.
This being said keep the good work up it's amazing content ❤
Keep it up ❤
Explaining the channel will always be done on each video since not everyone watches them all, or may be new viewers. Regards, Brian,
That ridge is for fuel not air. Everything otherwise was correct
A lot of modern engines (+90s) have 6mm valve stems, eg the 2JZ and Ford Duratec have 6mm valve stems
😱 wondering if I'll put groves in my intake?
So is the groove proud of the surface or machined Into the surface on the inlet valve
Thanks. Very interesting.
Does your BMW bike intake valves have these flow separation grooves?
No, however they are pretty much the same in terms of dimensions.
Really nice video! One question, what are the valve seat angles, the common 45 degrees, or is something special? See you at the next one, Thanks!
It's been known since the 1950's that a 30 degree seat angle improves low lift flow but needs higher seat pressure to seal properly as it doesn't have the wedging action of a 45 seat
50-55 I quess.
I wonder if that grove on the inlet valve has an anti-reverse effect. I suspect it would have more of an anti-reverse flow, effect increasing low rpm torque.
AR groove is machined in the combustion chamber side of the intake valves.
The four valve 2.3 Ford engine from 20 years ago used 5mm valve stems (also used in Mazda B2300 pick up)
This isn't relevant to video, but, have you had any problems with BMW ring gear?
The pin locating starter motor was loose in a few I've worked on allowing starter motor to move slightly which destroys starter nose and ring gear. Maybe it was only on the 2014¬15 bikes?
Doesn't Titanium have a melting point about double that of copper?
I thought the valves were forged from a much thinner rod, more like a rivet head (Honda have been making steel valves like that for probably 40 years)
I had friends in the 80's that used old Titanium bolts in knee sliders to get brilliant white sparks (usually from aircraft, there used to be an engine refurb place in Merther Tydfil)
If this valve technology is better, why they did not apply it on every engine? Does it makes engine consume fuel better? Which is bad for business for fuel producer?
Shame u don't have anymore discs for sale
Honestly this video doesn’t do the whiteness of the spark justice. Much whiter without a screen to look through. Really you are supposed to have some lighter weld lenses if your looking at titanium sparks for extended periods