What type of Engine have Ferrari road cars had?

I could be mistaekn, but there was never any 4 cylinder road Ferrari's made. I believe they are all competition.

 

I agree with Nathan...4 cylindre only in competition..
500 TR, 750 Monza...

 

IIRC there were 2 or 3 cars "made to order" in the mid 1950's using the then current 4 cylinder chassis. Not exactly "production", but intended as road cars.

 

I don't think there were any flat-12s, just 180* V12s? I thought the competition cars with flat-12s were real boxers though.

 

My friend and I were discussing this two weeks ago and then last week on Dream car garage on Speed there was a special that hadd 4 cylinder road cars from 1951 to 1957. I don't remember the names but it was longer and more cars than either of us realized.

Also I got a flyer in the mail from Ferrari about getting a certificate of Authenticity for my car and in there it mentions that they have also had a 10 cylinder engine. although it did not specify road or track.

Mike

 

I thought they were all 180 degree V12's (race and road).

V10 only F1.

 

All 180* V-12s are flat-12s, all flat-12s are not boxers.

 

Um,the Testarossa has a flat-12,and so do Boxers. Im also sure that the 550,575,612,Enzo and F50 all have 65 degree V12's. Pictured is the TR flat-12. They are also known as "horizontally oposed" engines.
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Flat 12 are not boxer...but boxer are flat 12...

the difference is about the rod's axes ..if they are in line or not...

 

*Some* flat-12 are boxer...

 

A motor, I believe, is called a ‘boxer’ if the bore and stroke are the same. The swept volume is a ‘box’.

How many cylinders for Ferrari road cars? I’ve driven a 250 c.c. one piston car.

True it started out the trip as a 3 liter V 12, but sometimes thing break....

 

No. A flat engine is of boxer configuration if directly opposing cylinders are at TDC an BDC at the same times.

Only if the pistons have a rectangular cross section, else still cylinder.

 

All Ferrari engines are good and fast.



12 cylinders or walk

 

How does that work with a single crankshaft?
BT

 

I believe the term is "split crank journals". Aren't some early Porsche cranks even of compound construction?

SEE http://en.wikipedia.org/wiki/Flat_engine, with the usual Wikipedia provisos.
And a couple of good pictures at http://www.drive.subaru.com/SubaruDrive-Sum02/Piston-Cranky.asp

 

Any engine with cylinders directly opposite each other are called 180 degree opposed, also called flat, are also called "V" engines, and also called boxer engines, as the engine lies down flat and resemebles a box. A VW Beetle motor, a 911 engine, a Subaru, and a TR or Berlinetta Boxer, all have 180 degree opposed cylinders, and all are called boxer engines, and all are called "V" engines. So the TR does in fact have a flat 180 degree V-12 boxer engine.

The crankcase is split into the opposing sides down the centerline and each half carries a main bearing half and the crankshaft runs in between the two halfs.

 

A lot of "flat" engines are called boxers, but a TRUE boxer engine is where two pistons directly opposite each other (left side to right side) move opposite each other, when one is moving outward, so is the other, and when one is moving inward, so is the other. This is achived by each piston/cylinder having it's own throw on the crankshaft. The reason these engines are called boxer engines is because when in motion the pistons seem to be in a fight.....like they are "boxing" each other.....hence the name "boxer". The Testarossa's engine is a flat-12, but not really a true boxer engine. But the name has stuck over the years.....and I too am guilty of calling it a boxer twelve on occasion.

 

The TR engine is a direct decendent of the Berlinetta Boxer engine, in which part of the cars name (boxer) represents the engine. That engine is a direct decendent from the Formula One engine of the 60's, also caller a boxer engine by Ferrari.

It would seem to me impossible for a 12 cylinder engine in a flat 180 degree opposed design to have all of its opposing cylinders moving opposite directions, and still remain short. In the Beetle engine for example, and also the 911, each connecting rod has its own crankshaft throw, none share a rod journal together. I would imagine then, that in a 12 you would need 12 individual throws, which would drastically weaken the crankshaft when coupled with the length. Also, I dont know if it would balance out. Porsche tried a 8 cylinder flat opposed back in the 60's called a 904? I dont know what type crank it had, but it vibrated so bad it destroyed anything bolted to it. I seem to recall they recorded 120g's being delivered to the alternator, which never lasted very long.

 

1970's - (60's were V12's and V6's).

 

Correct

The first Ferrari flat 12 Boxer engine was used in a F1 car in '67 I believe.

 

What?

No. A boxer engine is a very specific variant of a flat engine, with a specific and particular piston motion relationship.

No. The VW, Porsche and Subaru are boxers, the BB and TR are 180-degree V-12s.

WHAT?

No. A 180-degree V-12 is not a boxer, both are flat, both are horizontally opposed, but they are very, specifically, different.

 

Yes. Ferrari marketing practices are to blame for some of this confusion: The engines in Boxer Berlinettas are not boxer engines.

What?

That is salient characteristic of boxer engines, when the opposing cylinder throws are distinct and at 180degrees.

908?

The Porsche 917s had incredibly strong 12 cylinder boxer engines.

The boxer configuration confers vibrational smoothness, not imbalance.