Discussion
Wilky7 said:
My apologies if this has been covered before.......why do Aston put 6.0 on the cam cover, isn't the engine in the DB9/V12V/DBS/Virage/Rapide/Vanquish a 5.9 5935cc? Am I missing something?!
Because putting 6.0 in badging would be half the price of putting 5.935?It's probably all about marketing and rounding up rather than down.
BMW (3-Series for example) put 330i, 335i and 340i all on the same 3.0 litre engine and an X5 (for example) has a 3.0 diesel engine in the 30d, 35d 40d and 50d.
Edited by 8Tech on Friday 20th November 19:11
Wilky7 said:
cayman-black said:
Yes 65cc.
I think you'll find AM are, not me!I have owned/run 10 cars in my life from various manufacturers and they have all overstated the cc in the model number/name.
Anyone buying a car from your list will know what the cubic capacity is
pschlute said:
I think you are missing the fact that engine sizes are always rounded up.
I have owned/run 10 cars in my life from various manufacturers and they have all overstated the cc in the model number/name.
Anyone buying a car from your list will know what the cubic capacity is
Why is the 4.7 not a 4.8 then? I also own a 205 GTI, 1.9. 1905cc. Maybe only 5cc over but I'm clearly not missing the 'fact' that engine sizes are 'always' rounded up. Mathematically too, rounding up is only when half way or higher in between two values. In my experience, this way is applied in the car worldI have owned/run 10 cars in my life from various manufacturers and they have all overstated the cc in the model number/name.
Anyone buying a car from your list will know what the cubic capacity is
Edited by Wilky7 on Saturday 21st November 14:02
baconsarney said:
Many years ago I had 316i BMW coupe... the engine was 1.9 litre.. (or close to)
They started that, if I remember rightly, with the E36 323i. It was a slightly de-tuned 325i for smoothness and BMW didn't want to give it the 325i badge. E46s had loads of these examples, 316i which came as a 1.9 8v then 1.8 16v, 318i 2.0 and since then they've gone completely off. Some 114i are 2.0baconsarney said:
Many years ago I had 316i BMW coupe... the engine was 1.9 litre.. (or close to)
And BMW used to be accurate with this, certainly in the E30 days.
Mercedes must have been to see a shrink with their current AMG C63.
The engine is not 6.3 litres these days, but only 3,982 cc.
C63 sounds better though, so they pretend it is now a model category name.
"Nothing to do with the engine Sir, why did you think it might be?"
Emilio Largo said:
Wilky7 said:
Mathematically too, rounding up is only when half way or higher in between two values. In my experience, this way is applied in the car world
That is correct. So the so-called "6.0" V12 is indeed a 5.9 V12 and the 4.7 V8 is, well, a 4.7 V8 
In Motorsports the rules are clear: If you are running in a class up to 3.000 ccm, then your engine should have as close to this limit, like 2.998 ccm.
If your engine would have 3.008 ccm - then you would be required to start in the class up to 4.000 ccm.
May be this explains why they don´t use mathematical rounding.
And to be honest: 6.0 sounds much better. If you are talking of a 6.0 V12 engine it is really a very nice coincidence that 6 is exactly half of the cylinder number 12.
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