[Filmjay]

I've been searching high and low, but can't find a specific answer about the head specs for the early V8's. (308 and up)

What I'm looking for is valve length/diameter(intake and exhaust), valve spring pressure and height (unloaded and loaded at the seat), runner length, cam durations, rocker ratios, etc...

Basically, full head specs or blueprints. Part numbers would be EXCELLENT!

Can anyone help?

[chaz]

Which engine, the Dino V6? Or the 308s V8? Your heading says Dino V8. Unless its the 308 GT4 whiich i beleve is also named a Dino which has a V8.

[Filmjay]

All Ferrari 90 degree V8's from 1973 and up are called Dino's until 2004 when Ferrari introduced an all new V8 in the 430. The racing and higher performance engines were Tipo's.

But anything in the 3.0-3.6 QV if possible. Though I suppose anything post 1982 and up 'til 2004 would be good.

[Filmjay]

I have. They don't have any engine components. The stuff they do have, they don't give any specific information about the part.

[chaz]

Originally Posted by Filmjay

All Ferrari 90 degree V8's from 1973 and up are called Dino's until 2004

Now i have been around Ferraris a long time and i have never heard of that one. I cant even recall ever reading that in any of my tec books in my hundreds of Ferrari books. So whats the deal? Why do you say that? Would you care to shed anymore light on the subject please?

['75 308 GT4 (Peter)]

Originally Posted by Filmjay

I've been searching high and low, but can't find a specific answer about the head specs for the early V8's. (308 and up)

What I'm looking for is valve length/diameter(intake and exhaust), valve spring pressure and height (unloaded and loaded at the seat), runner length, cam durations, rocker ratios, etc...

Basically, full head specs or blueprints. Part numbers would be EXCELLENT!

Can anyone help?

Valve length:
Exhaust: 110mm
Intake: ?
(I could only measure the exhaust valve, because one of them is sitting on my desk beside my computer! These sodium-filled exhaust valves are just about as good as that... Paperweights...)

The rest, taken from the 308 GT4 workshop manual:

Valve stem diameter:
7.96 to 7.975mm

Valve head diameter:
Exhaust: 36.8mm
Intake: 42.8mm

Valve spring length (free):
Inner spring: 40.4mm
Outer spring: 42.1mm

Valve spring length (closed):
Inner: 35.05mm
Outer: 38.65mm

Valve spring length (open):
Inner: 26mm
Outer: 29.6mm

Load with valve closed:
Inner spring: 12.3kg
Outer spring: 16.6kg

Load with valve open:
Inner spring: 33.1kg
Outer spring: 60.3kg

Valve layout angle:
46 degrees

Runner length:
??? - Not listed

Cam durations:
P6 competition cams (racing only): 290 degree duration, 9.25mm lift, 48/62-64/44 timing.

Rocker ratios:
No such thing on these overhead cam engines!

[Filmjay]

Originally Posted by chaz

Now i have been around Ferraris a long time and i have never heard of that one. I cant even recall ever reading that in any of my tec books in my hundreds of Ferrari books. So whats the deal? Why do you say that? Would you care to shed anymore light on the subject please?

Certainly. The initial Dino V6 was 65 degrees to allow a more straight intake runner between the cylinders, and used a flat plane crankshaft.
But the 308 series road cars were seen as the successors to the Dino, and all V8 engines using a flat plane crankshaft were derivatives of the original Dino V6.(3.0, 3.2, 3.6)...they too are called Dinos....though the naming now took on the displacement as the first two numbers and the configuration as the last number. (308= 3.0L V8, 328=3.2L V8, etc...)

Until the 355 this didn't change, but only to denote their new 5-valve per cylinder engine (355 = 3.5L, 5 valves per cylinder.), and continued on with the 360, but they left off the configuration and just went with the displacement (360= 3.6L...while if they has stayed with their original naming process, should have been the 368.)

But ALL these engines are derived from the original Dino V6, and are themselves considered Dinos'.

Though the V12's are called Tipo's, they still stem from the initial 65 degree Dino V6.
Hence, the Dino name is attached to basically all Ferrari engines after 1956 until the 4.3L redesign as they are all conceived directly from the original Dino V6.


And Peter, sir, thanks so much. And yes, I know there are no rockers on the OHC engines...just used to these darned domestic pushrod beasts. :laugh2: Guess I should see if I can dig up one of those manuals, eh?

[chaz]

Originally Posted by Filmjay

Certainly. The initial Dino V6 was 65 degrees to allow a more straight intake runner between the cylinders, and used a flat plane crankshaft.
But the 308 series road cars were seen as the successors to the Dino, and all V8 engines using a flat plane crankshaft were derivatives of the original Dino V6.(3.0, 3.2, 3.6)...they too are called Dinos....though the naming now took on the displacement as the first two numbers and the configuration as the last number. (308= 3.0L V8, 328=3.2L V8, etc...)

Until the 355 this didn't change, but only to denote their new 5-valve per cylinder engine (355 = 3.5L, 5 valves per cylinder.), and continued on with the 360, but they left off the configuration and just went with the displacement (360= 3.6L...while if they has stayed with their original naming process, should have been the 368.)

But ALL these engines are derived from the original Dino V6, and are themselves considered Dinos'.

Though the V12's are called Tipo's, they still stem from the initial 65 degree Dino V6.
Hence, the Dino name is attached to basically all Ferrari engines after 1956 until the 4.3L redesign as they are all conceived directly from the original Dino V6.


And Peter, sir, thanks so much. And yes, I know there are no rockers on the OHC engines...just used to these darned domestic pushrod beasts. :laugh2: Guess I should see if I can dig up one of those manuals, eh?

Of course i knew that they derived from the V6, and i know about the flatplane cranks ect ect.
But you are the only one that i have ever heard say that regarding every V8 up to 2004 are know as Dinos. Never heard it, never read it. Spoke to two of my Ferrari tec mates today and mentioned it to them. They looked at me like i was from mars

[Filmjay]

Originally Posted by chaz

Of course i knew that they derived from the V6, and i know about the flatplane cranks ect ect.
But you are the only one that i have ever heard say that regarding every V8 up to 2004 are know as Dinos. Never heard it, never read it. Spoke to two of my Ferrari tec mates today and mentioned it to them. They looked at me like i was from mars

Well, I'm from Mars.

Whenever I've heard reference to the early Ferrari V8's, I've just always heard them referred to as the Dino V8's and I always knew that they meant the 3.0/3.2L V8's. Of course, they're not Ferrari certified techs...just general "engine guys".

But, you got the gist of the initial question though, right?

Try a Google for "Dino V8" or "Dino engine", and see what comes up. There are actually more models than I thought.

[chaz]

So your basing it all around the Wikipedia then? Hey if the Wikipedia says that all the V8s are called Dinos as opposed to Derivatives. Then what do i know.

[Filmjay]

nvm

[chaz]

Can not be botherd with this mate. Your right i am wrong Moving on....

[Filmjay]

nvm

[Dr. Bob]

I for one did not hear about that one either. I even doubt if the Dino 308 should be a Dino anyway because Alfredino designed a V6, not a V8. But hey, logical typenumbers/names and Ferrari do not mix!