While it was no technological slouch, I can't agree that the Bentley was ahead of its time. Overhead cams and multi-valve cylinder heads had been well proven in WWI aero engines, while Bugatti engines had both those features from well before that war. In the same year this 3-litre was made, Lancia introduced the Lambda with four-wheel brakes, independent front suspension, front-wheel drive, and unitary construction. That was properly ahead of its time !
Have I missed something? If it has 2 plugs per cylinder, and each plug fed from separate circuits, and ONE cylinder is not firing, it cannot be a plug or plug lead. But it has 2 carburettors, each feeding different cylinders. So, one carby is running far too rich, and that is causing the apparent misfire. 2 plugs per cyl is normal aircraft practice. On warm-up of a piston engine aircraft, you do a test - operate the engine on one ignition circuit at a time. The RPM should be a stated amount less than the RPM is with both ignition circuits working. This is because with two plugs per cyl, the optimum ignition advance is less. If the RPM drop is greater on one circuit, there is a plug or lead etc problem on the other circuit. If the RPM drop is less than normal, the problem is fuel mixture, timing, or a fault on the circuit cut. Can you not do this test on the Bentley?
That's very cool stuff...Oldest thing I've worked on was a 1927 Chev Tourer...First year for juice brakes I believe for Chev...Quite a large difference in tech with that beauty..Love those old SU's....You coulda just shorted the plug out with a screwdriver Greg...Just sayin' mate...
Nice car but the wings/fenders look really odd on a vdp style body and the rears especially wrap around the tyre much too far. The front brakes are a later addition. The Bentley engine 30 degree valve included angle and the sohc 3 lobe per cylinder rocker layout was still being used by Honda amongst others in the 90s and maybe still is. Bentley was the first production car with this layout. Theyre pretty agricultural otherwise though, I have an early 23 car. Bugatti only made a couple of 16 valve prototype engines pre 1914 and then put them into production post WW1. these had tiny vertical valves and banana tappets which no-one else copied, the pre 1914 T13 brescia race/production etc engines were all 8 valve. The lancia Lambda isnt front wheel drive and the sliding pillar front suspension was only copied by Morgan I suspect, so was a design dead end really.
![โรงเรียนตอนตี 2 โคตรหลอน..!! [โรงเรียนไดเม่]](http://i.ytimg.com/vi/2MAEMwqVYh8/mqdefault.jpg)
Thk u for showing your beautiful piece of history 1922 bentley machine
Thanks for sharing. Truly ahead of its time.
While it was no technological slouch, I can't agree that the Bentley was ahead of its time. Overhead cams and multi-valve cylinder heads had been well proven in WWI aero engines, while Bugatti engines had both those features from well before that war. In the same year this 3-litre was made, Lancia introduced the Lambda with four-wheel brakes, independent front suspension, front-wheel drive, and unitary construction. That was properly ahead of its time !
Bugatti have nothing to talk about before the war,it wasn't til he copied the Miller?
@@colinmunro7337 The Type 13, first raced in 1910, was SOHC and four valves per cylinder. Miller's designs didn't emerge until later.
@@shanehnorman and by 1913? The Peugeot was king of the hill
beautiful old car! glad it's still intact and being well-taken care of!
They don't make em like they used to
Marry Christmas to everyone from New Mexico!
Merry Christmas to you too- Greg Quirin
G'day from West Australia, 😉 nice blast from the past🙂
Have I missed something? If it has 2 plugs per cylinder, and each plug fed from separate circuits, and ONE cylinder is not firing, it cannot be a plug or plug lead. But it has 2 carburettors, each feeding different cylinders. So, one carby is running far too rich, and that is causing the apparent misfire.
2 plugs per cyl is normal aircraft practice. On warm-up of a piston engine aircraft, you do a test - operate the engine on one ignition circuit at a time. The RPM should be a stated amount less than the RPM is with both ignition circuits working. This is because with two plugs per cyl, the optimum ignition advance is less. If the RPM drop is greater on one circuit, there is a plug or lead etc problem on the other circuit. If the RPM drop is less than normal, the problem is fuel mixture, timing, or a fault on the circuit cut. Can you not do this test on the Bentley?
That's very cool stuff...Oldest thing I've worked on was a 1927 Chev Tourer...First year for juice brakes I believe for Chev...Quite a large difference in tech with that beauty..Love those old SU's....You coulda just shorted the plug out with a screwdriver Greg...Just sayin' mate...
Looks identical to one my mate sold recently
If some diagnostic equipment was used (sun scope) etc. exhaust gas analyzer you would ind these issues more rapidly
John, ended up that the cam timing was off a tooth. Engine is running great now! Pretty cool OHC 4 valves per cylinder 1922
Nice car but the wings/fenders look really odd on a vdp style body and the rears especially wrap around the tyre much too far. The front brakes are a later addition.
The Bentley engine 30 degree valve included angle and the sohc 3 lobe per cylinder rocker layout was still being used by Honda amongst others in the 90s and maybe still is. Bentley was the first production car with this layout. Theyre pretty agricultural otherwise though, I have an early 23 car.
Bugatti only made a couple of 16 valve prototype engines pre 1914 and then put them into production post WW1. these had tiny vertical valves and banana tappets which no-one else copied, the pre 1914 T13 brescia race/production etc engines were all 8 valve.
The lancia Lambda isnt front wheel drive and the sliding pillar front suspension was only copied by Morgan I suspect, so was a design dead end really.
It has a mag 1 or 2 that the engine can run off of.
The Bentley is not advanced. It's just we haven't improved much.
Thanks for sharing. Truly ahead of its time.