defining moments of motoring history

Site Subscriber Joined: 02 Oct 2004 Posts: 1575

discus:

my proposal is the Ford dfv mainstay of motorsport for 20 years and so popular that ford are having to cast new blocks

it was light, powerfull, strong and compact and relativley simple when compared to some of the other engines that where available at the time matra v12, brm h16 etc so there you have it thats my offer.

Mr Quoter-vator Joined: 16 Feb 2004 Posts: 7405

if i knew what the hell u were on about id comment Cool

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

The DFV was indeed a good engine, Duckworth himself never expected it to last as long as it did or put out as much power.

The engines used mainly in old gp cars, some boats etc but its not the best really.

Its simplicity was what allowed it to sucede really.

Look at the BRM lump with its diametrically opposed valves! Imagine being the guy that had to design the inlet and exhaust!

The ford/cosworth YB was probably the best step taken in the 80's it opened lots of doors for road cars.

Mr Quoter-vator Joined: 16 Feb 2004 Posts: 7405

the brm bein that v16 one?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

BRM done a lot more than 1 engine JB!

Mr Quoter-vator Joined: 16 Feb 2004 Posts: 7405

Site Subscriber Joined: 02 Oct 2004 Posts: 1575

brm H16 was designed around 4 banks of 4 cylinders a very complicated engine brm did make a 1.5l v16, and I have to say the best sounding engine I have heard, is the H16.

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

yes its quite a haunting noise

Mr Quoter-vator Joined: 16 Feb 2004 Posts: 7405

so ppl keep telling me...must try and find a sample on the web....

Site Subscriber Joined: 13 Oct 2004 Posts: 4722

1.5l v16?

or 16v?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

1.5 litres capacity

16 cylinders

Site Subscriber Joined: 13 Oct 2004 Posts: 4722

ooo tiny pistons

any piccys of it?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

nope, was made in the 50's.

I have the specs somewhere

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

V 16
1500cc
72PSi boost, yes seventy two
dual stage rolls royce centrifugal blower
7.5:1 CR
600bhp at 12,000rpm
Bore/stroke 55.56x38.5
31.75mm inlet valves
55/70 degree inlet timing
70/46 degree exhuast
99.75 degree lobe seperation

Impressive for an engine made in 1951

Site Subscriber Joined: 13 Oct 2004 Posts: 4722

600bhp at 12,000rpm

bloody heck.

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

Long stroke renault turbo F1 engine to 1988 limitations of 150 litres of fual per race and 2.5 bar.

90 degree V6
bore stroke 80.5 x 49
CR 7.5:1
870bhp @ 10,650rpm
Bmep 708 PSI
2 x KKK turbos

made 1200bhp in qualifying with legal fuel.

Site Subscriber Joined: 02 Oct 2004 Posts: 1575

Chris H wrote:

yes its quite a haunting noise

stood about 5ft away from jacki stewart's 1 when they started it up at goodwood a few years back, my hearing has never been the same since, the closest I can not describe how it sounds but once you've heard it you'll never forget it.

BRM did some amazing stuff sadley though reliability was always an issue. hence the dfv is a legend imo.

any others Question

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

Rover K series, world leader in production engine design, great engine.

Just a shame that there was a few problems with them.

Liner protrusion, plastic head dowels and so on. If renault has been ok with liner protrusion for 40 years you would have thought rover could manage it!

Site Subscriber Joined: 02 Oct 2004 Posts: 1575

my farther in-law has a rover 400, he's had no end of problems with his engine, plastic dowels? what they used for then?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

Righty, the K-series when built correctly and well maintained is very reliable with a good output. 105bhp from a 1.4 is still quite good 14 years on!

The K series originally came with steel dowels to locate the head to the block, they were then changed to plastic, not to clever, they soften and allow the head to move about thus blowing gaskets. Rover later reverted back to steel dowels.

Inlet manifold gasket, the gasket is quite fragile and can rupture, this chucks coolant straight into number 4. Crappy coolant also rots it out.

Liner protrusion, like the E/C type renaults engines they run wet liners, these have to protrude above the blocks deck face in order to seal properly. A lot of the time the liners are equal to or lower than the block face. This means they never seal right. Basically theres no crush on the gasket fire rings when the liners not where it should be.

Head bolts, the head bolts hold the engine together, its a very clever design. The bolts pass from the head down through the block into the main bearing girdle. If rover bolts are used and torqued correctly then theres no problem, aftermarket bolts etc cause no end of problems due to differing tensile and stretch limits.

Cooling system, the engine came about from your grans metro, so the thermo stat is placed in the bottom rad outlet, this allows quick warm up, however due to its position it also gives the engine quite a thermal shock when it does eventually open.

So to re-cap, check liner protrusion, use rover head bolts, steel dowels, rover head gasket and torque it properly.

if you plan to do anythign with the engine power wise move the stat to the rad top hose as is conventional.

Do this and make sure its right then the engine will last a long time and be reliable.

Like I said the engines a cracker, main bearing girdle etc, its very stiff and extremely light. And it can make impressive power when built properly.

Site Subscriber Joined: 02 Oct 2004 Posts: 1575

ahhh

so good engine, problem was bean counters got involved Rolling Eyes