Bugatti Engineering - 'O' rings in the valve guides?? 

John makes cutting that groove look so easy. But it's not. Grinding that tool bit precisely is very very difficult. He has my deepest respect.

To be able to see the way the Bugatti engine is designed and built is extremely interesting. The previous video showing he roller bearing crankshaft assembly and disassembly was also very interesting. Just can't get enough of these content.

"Looks like a torture device". What a witty lady. Won't get bored with her.

Suzy, I don't know if you intended to grow up to be a great documentary film maker, but in the instance of recording Ivan's wisdom for the ages I think you have met the mark. You are better at bringing the "Ivan Experience" to the RU-vid masses than any of the previous videographers. I believe it is because you know and appreciate Ivan for the genius that he is. I think you should build brass rails around him and charge admission. Thank you for letting us see a bit of Ivan.

And that, ladies and gentlemen, is how years of knowledge and practical emgineering, solves problems without the aid of bean counters and laptops! Fantastic insights yet again, and all done by passion.

This one truly illustrates how a lifetime of friendship and dedication can result in true craftsmanship. So well done. And kudos to Suzi for her camera work and expert interest.

Ivan's sock game on a whole different level. Well done Sir! Cheers! 😎👍🧦🏁🏁

For decades, Ducati have had factory fitted internal Viton o-rings in valve guides

Screw in valve guides? Now there's a great idea, I'm unable to count the number of times over the years that would have been soooooooo handy. Another wonderful Shed Racing video as always.

Susi has made the Chanel even better which was already fantastic 😍 thanks, cheers from Australia

Suzi, thanks for keeping Ivan on the straight and narrow!

Another good one suzie. Watching ivan spinning those spanners like a youngster but with a lifetime of knowledge and skill, what a team. Mmm orange.

Thanks team for showing the intricacies of the beautiful Bugatti engine. This was very interesting to watch and the interactions made it very entertaining. All the best, Mart.

The old Frenchman probably just said over dinner, see I told Ivan that it didn’t need valve guides it doesn’t smoke just needed fresh oil 😅 Excellent shed engineering again 👌

The blue blue Bugatti that Mr Ivan is driving is by far my favorite That color is perfect for the car.❤️

Many years ago I had a '63 2.5L Daimler V8 with colossal oil consumption (and lots of smoke). My local engine shop said they could cure it and cure it they did, fitting Series 1 Landrover valve guides which had internal o-ring seals just like you machined for that Bugatti. Simple but very effective. Another great video.

The ability to simply unscrew the valve guides is fantastic..Great idea with the O ring seals.. Thanks for the video.

Lovely stuff! But don't know whether to laugh or cry that a vehicle with so much attention lavished on it by experts can STILL let you down on the way to the garden party! What hope for the rest of us? 😅❤

Suzie screams she wants to goo faster up the hill! Obviously the jump in views is because of you Ivan; the Tifosi found out you had a new Ferrari. Fascinating stuff, as always.

Loved the concert by gears on the climb also love your present "the Shocks".

New business venture, Ivan Denton socks!

Yet another enjoyable afternoon watching the dynamic duo at work. Thank you.

Thanks, to the whole team, for a lovely video!

It is great to hear Susie's questions. (What does a tooth out mean?) It really shows how into this she is. Thanks for your enthusiasm. gary in japan

Great stuff! Anything Bugatti always fascinating! Thank you

I think remember the valve guides in a Leyland L12 diesel from the 1970’s/80’s had an O ring inside. Very rare though. Totally forgot until seeing your film. Very impressive engineering to do this. 😊😊

I hope you live forever, Ivan.

Cheeky Suzy! @13:00 mins 😂

Proper practical engineering. Good stuff!

one of the best automotive films I have ever had the pleasure to see

I'm in full agreement about the poor availability of decent socks. However, I believe the ones that don't cut off the blood to your feet are called "comfort socks". I notice that Sainsbury sell them although I have yet to try them. Other supermarkets seem to have stopped selling them.

Keep the boys in order Susie Collet, mechanic in waiting....

What a superb video camera skills on one of a finest piece of automobile engineering. All done by one of a finest car technician and a superior camera arrangement with expert technical questions. I mostly enjoyed.

Every day Ivan sing :I'm the Bugatti man, that's what I am I'm here to do whatever I can.....Brumm..Brumm 😀

Thanks for such a technically perfect video! Very interesting and well produced. What a team at Shed Racing!!! Cheers, Paul.😊

You are a genius. I've watched your video's and glad to there weren't no volkswagon bugatti,s there just proper bugatti.

O rings in the valve guides, just like a Rover P4.

Very clever modification that

Thank you. Perfect detail, filming and explanation.

Another film of joy watching true engineers at work. If it doesn’t fit, is broken or there are none left, “ I’ll make a few spares just in case..” In the USA this video would be full of fake horror, tears, $100,000 bills, bad words and many WOW!!!’s …..John and Ivan just get on with it.😃😃😃😃😃

Another great video ! Is there nothing Ivan doesn’t know about cars , Great guy ( And Suzie ) great video ❤❤

Just went to buy a pair of socks and theyve sold out!! Bet they cant wait for Suzi to go again and buy something!! 😂

You could set the trip meter on a Datsun 120Y (B210) A12 engine when every 50,000 miles the valve stem seals would wear out..... characterised by decelerating in gear down a hill....and then the "puff" of blue smoke when accelerating at the bottom of the hill... Simple job to replace in situ using compressed air to hold the valves up...

What aa wonderful set of lessons on working the valvetrain into prime condition.TY. Pretty nifty looking socks to ;)

That's incredible! Amazing! I can't get my shoes on and off like that and I'm only 65!

OMG I JUST LOVE YOU GUYS what you don't know about old engines i could put on a postage stamp two plus one equals the GENIUS TEAM OF SHED RACING LOVE THE VIDEO THANKS .

Just great again, many thanks to all the team.

Brilliant idea, thanks for sharing this,

Another excellent video 😊

do you use addatives to oils and what about lok tite ! = noisey didd`s and gear boxes = 1964 mgb we used molybond = powdered graphite ! so it might help - de-friction hot spots = thanks IVAN great show ! =i have a subaru turbo forester 2001.

Bugattis beauty engineering supreme

On the whole hand filed cam thing, I think some forget that different follower types use different geometry. I think sliding fingers like that is a simple pair of parallel faces, easy enough to clean up by hand. Whereas in something like a typical post WW2 pushrod V8, the "flat tappet cam" setup most are familiar with, has a somewhat precise taper on the lobe that meets a point/circle on the slightly spherical convex lifter face so the lifter rotates instead of rubbing (this is where a wiped lobe starts) and the cam is forced back in the block against the single thrust bearing. Getting that right enough by hand would be a challenge.

Nice work ❤

The 35B sock lacks a hole for the relief valve. So 35 "GP de Lyon".

Suzy's going to steal all your secrets, Ivan, and start up Automobiles Sugatti as competition!

I have seen o-ringed valve guides but I can’t recall the engine I was working on. I probably would have use umbrella seals because I reckon valve guides need a bit of oil but the proof is in the pudding!

Very interesting video. What grade of material is the Oring made from? Cheers

Who would have thought. Bugattis AND Socks.. 👍👍

I would like to build a few engines , from scratch. One idea is a flat 8, boxer-8. Using Chevy V8 heads , possibly crank, maybe use a flat plane crank. Custom cams. The crank case built similar to a motorcycle crankcase, acrossed with a Subaru,/VW,/Porsche. The cylinders bolt to the case. The crank bolting into the car. With bearings. And camor cams a cam for intake and one for exhaust to allow adjustments on events. LSA and such. With approx. 6.250"-6.500" with Honda or Toyota journal size, and possibly H-beam rods. 2.05"/1.65" valves and a pair of intakesthat bolt on over the valve covers with heat from the exhaust side to slightly heat the intake through a 1/2" tube with exhaust and a 1.5" pair of crossover tubes to keep a constant vacuum on each bank!. With about 4"-6" intake runners with individual throttles into large plenum 4.5x the intake runner volume. With about 68mm throttles. Three versions , one using sbc heads and crank, the second with LS heads, and third with big block chevy crank and 8.1L style heads the balance should be excellent. With 6 bolt mains using 20mm bolt. The cylinders bolting to the crank case with 8, 1/2" bolts. The heads using their bolt pattern. The mains using studs crossing the block can be tightened from either side. A cover plate, to seal the case. Then the cylinders bolt on(after the rods are bolted to the crank. Then the pistons in the cylinders. And the pins installed and cylinder bolted on. The Bell housing with multiple bolt patterns. Chevy V8 and other good transmission /bell housing patterns. With 3" to 4.5" strokes and the possibilities of 9500+ RPM. In the shorter strokes. And 7250 in the long strokes! Curious to the sound, would it sound like a traditional sbc v8? Sorry to ramble! Have a awesome day!!

the early landrover engine has o-rings in the valve guides.

re valve guides and oil on the back of exhaust valves. My BMW R60/5, from new, would smoke from the left cylinder on start up if it had been leaned that way when parked. looked awful but never a problem.

John, your toolholder was not locked into the post correctly

nice sox = i play guitar = i have Guitar Tee shirts shirts and sox = all similar to my guitar !

my dad used to work at burnards chuck makes in winchester

Great show as normal Ivan, but did I see John in the background with a frogeye sprite rear wing by any chance??

Using a heat gun , freeze spray and thread locking compound would eliminate the need for any bashing.

Brilliant ! I would wonder what type of O-ring you use (NBR 80 or 90?), the amount of initial resting pressure and how long it would last (depending on heat coming from how spirited the use)... then I suppose a properly ream guide is hard to beat to combine lubrication all along the stem and minimal play... ever considered fitting seals at the top rather (to limit engine off suction only)?

flouro-elastomer o-ring? Or more exotic ?

Nothing to do with me mate. I just think a lot of people have a soft spot for the 308😀

wow good job boys an girls top team🤫

Rover ioe engines use o rings in the valve guides also

I ran out of zero's half way down the line .

I watch quite a few hifi reviews so why not socks?

Buy socks for diabetics, they have very little tension at the top giving a more comfortable feel and they don’t stop blood circulating properly.

why an o-ring? seems far easier to run through some parts catalogs and find normal valve stem seals that will do the job, and simply turn the OD to suit... o-rings arent intended for sealing sliding shafts... especially HOT sliding shafts.

em orings in valve guides have never worked well. Ferrari also tried it in the 60s oh well

Where's the bit where John as a young man is walking round the building saying, I don't like the way that's been done, as he is a bit of a builder himself, I wanna see that bit too. great vid thanks suzi

it may well be 25 but we haven't seen suzie's lovely legs, subtle hint.