4.2 or 4.5 opinions please
Discussion
Hi everyone,
I would like to get a cerbera and would prefer a 4.5 but how much real world difference is there between the 2. It' will only be a weekend play thing with the odd day into work . I'm not looking to wildly exceed the national limit. More torque delivery, in gear acceleration and of course how easy it lights the rear wheels up.
Thanks
Clive
I would like to get a cerbera and would prefer a 4.5 but how much real world difference is there between the 2. It' will only be a weekend play thing with the odd day into work . I'm not looking to wildly exceed the national limit. More torque delivery, in gear acceleration and of course how easy it lights the rear wheels up.
Thanks
Clive
Honestly - no difference. If you like to feel you've achieved something with extra money then the 4.5 is better because a small number of talented chaps can get significant improvements from it via new induction set-up and rolling road remapping - but the only reason for that is that they almost all underperform by a large margin against factory claimed figures due to the induction hoses not really working well as designed and the fuel maps being, frankly, terrible as standard.
The extent of this is argueably that a standard 4.5 may indeed be less powerful than a stanard 4.2.
In the real world, a properly mapped 4.5 will pull away from a 4.2 once you're both well in to 3 figure speeds, but within the realms of 2 digit speeds, both cars are acceleration limited by traction and mid-range, in-gear performance without tyre smoke is pretty much identical. The 4.2 is better mannered at low speed.
A 4.2 argueably looks more impressive under the bonnet.
A well set-up 4.5 (i.e. good 4.5 plus around £1300) will be a very strong performer though. Just not out-of-the-box, that's all I'm saying
The extent of this is argueably that a standard 4.5 may indeed be less powerful than a stanard 4.2.
In the real world, a properly mapped 4.5 will pull away from a 4.2 once you're both well in to 3 figure speeds, but within the realms of 2 digit speeds, both cars are acceleration limited by traction and mid-range, in-gear performance without tyre smoke is pretty much identical. The 4.2 is better mannered at low speed.
A 4.2 argueably looks more impressive under the bonnet.
A well set-up 4.5 (i.e. good 4.5 plus around £1300) will be a very strong performer though. Just not out-of-the-box, that's all I'm saying
^^
this comes up so many times and the answer is always that they are all immensely fast.
So get the one with the best badge and people will assume you've bought the best
That is why the old answer always used to be 4.5
But you can get 4.7 badges now, so the answer has now changed as mr Cerbera says above ..
this comes up so many times and the answer is always that they are all immensely fast.
So get the one with the best badge and people will assume you've bought the best
That is why the old answer always used to be 4.5
But you can get 4.7 badges now, so the answer has now changed as mr Cerbera says above ..
Supateg said:
What's wrong with a speed six?
This topic has been covered again, and again, and again on here
Have a good search and plan to have a day spare to read all the posts.
Personally I would buy the best example available regardless of engine, and enjoy
I think he wants a proper Cerb.. This topic has been covered again, and again, and again on here
Have a good search and plan to have a day spare to read all the posts.
Personally I would buy the best example available regardless of engine, and enjoy
Although I do agree, just buy the best (V8) example you can for your budget..
0-100 the 4.2 is quicker, the 4.5 can be tuned to have the more impressive pub figures...
Honestly even adding 40bhp doesn't honestly make much difference. Once you've wet your pants and exclaimed 'f&ck that's fast...'.
You'd only notice the difference on a straight drag with another car, and that's been done only a few times.
Ultimately get the best you can, with the features you want, in the colour you like etc etc.
There's a few unmolested ones around that may need work, equally there's a few highly fettled ones around, and ones in between.
Ultimately size isn't important, condition is. I'd err on the V8 or a reputable speed six.
Honestly even adding 40bhp doesn't honestly make much difference. Once you've wet your pants and exclaimed 'f&ck that's fast...'.
You'd only notice the difference on a straight drag with another car, and that's been done only a few times.
Ultimately get the best you can, with the features you want, in the colour you like etc etc.
There's a few unmolested ones around that may need work, equally there's a few highly fettled ones around, and ones in between.
Ultimately size isn't important, condition is. I'd err on the V8 or a reputable speed six.
Byker28i said:
0-100 the 4.2 is quicker, the 4.5 can be tuned to have the more impressive pub figures...
I thought this was only the case with clatter cam 4.2s. But that being said, there is a world of difference between 4.2s themselves, each one is different. Same goes for 4.5s I would imagine. If you get a 'Good' 4.2, it will easily outperform a 'bad' 4.5. There have been reports of people having badly setup AJPs that make low 300bhp figures.
There are so many variables its hard to really compare.
On all Runway runs I've been to, the 4.2's have always had the head start over the 4.5's, don't ask me why, possibly slightly different characteristics of the inlet system or power over drag not as important? however the extra horses come into play after this and the 4.5's play catch up.
We are however talking marginal differences with well set up engines. I'm sure a bog standard 4.2 (330-345bhp) against a tuned 4.5 (400-420 bhp) would suffer.
Some say, on normal driving, the speed 6 is easiest, the 4.2 next and the 4.5 the worse because of the engine characteristics. I've never really found this, however getting the engine mapped to bring the torque in at 2k revs rather than 3k has made a huge difference to the driveability of mine.
We are however talking marginal differences with well set up engines. I'm sure a bog standard 4.2 (330-345bhp) against a tuned 4.5 (400-420 bhp) would suffer.
Some say, on normal driving, the speed 6 is easiest, the 4.2 next and the 4.5 the worse because of the engine characteristics. I've never really found this, however getting the engine mapped to bring the torque in at 2k revs rather than 3k has made a huge difference to the driveability of mine.
Byker28i said:
On all Runway runs I've been to, the 4.2's have always had the head start over the 4.5's, don't ask me why, possibly slightly different characteristics of the inlet system or power over drag not as important? however the extra horses come into play after this and the 4.5's play catch up.
have been told that the 4.2 delivers more low down torque than the 4.5 which might explain the above Runway runs.Hi thanks for the replys. I had discounted the speed six because if I'm honest I prefer the sound of the v8 it's popping and banging etc . I like the flat plan crank it's different like the car is, it suits it's character.
I'm coming from a 997/911 each dealer I've been to questions my sanity that I want to get a Cerbera. I spoke to chap today who really advised against it.
I'm a mechanic so I'm not overly worried but I want something when you open the garage door it's puts smile on your face and it's a bit more involving to drive. There isn't loads on the road which I like. I don't anyone with one to have spin in and see if they are as bad as they say.
And what are clatter cams
I'm coming from a 997/911 each dealer I've been to questions my sanity that I want to get a Cerbera. I spoke to chap today who really advised against it.
I'm a mechanic so I'm not overly worried but I want something when you open the garage door it's puts smile on your face and it's a bit more involving to drive. There isn't loads on the road which I like. I don't anyone with one to have spin in and see if they are as bad as they say.
And what are clatter cams
OK gonna be controversial but here goes - just driven a 4.5 for the first time today (have been a passenger before)
No way am I selling my Speed6 now. On a track maybe, on the road forget it
Sorry gents have to say I wasn't very impressed, actually disappointed would be a better word. It wasn't the rapid dog I was expecting, in fact under 3000 rpm it was more old fart, well that's what it sounded like. 3500 rpm onwards it was spitting hell fire but was an awful lot of work to potter around in. Perhaps coming from Rover V8s I was expecting a wave of torque at low revs, but it just seemed to only be happy when it's neck was wrung.
No way am I selling my Speed6 now. On a track maybe, on the road forget it
Sorry gents have to say I wasn't very impressed, actually disappointed would be a better word. It wasn't the rapid dog I was expecting, in fact under 3000 rpm it was more old fart, well that's what it sounded like. 3500 rpm onwards it was spitting hell fire but was an awful lot of work to potter around in. Perhaps coming from Rover V8s I was expecting a wave of torque at low revs, but it just seemed to only be happy when it's neck was wrung.
Gassing Station | Cerbera | Top of Page | What's New | My Stuff