*Moved - Alternative (green) Engines

[406Special]

If Bristol were to replace the Chrysler V8 with something else, then
I would like to see something more modern and efficient whilst
retaining decent service and support. Any idea of simplicity must be
set off against reliability and ease of service of modern electronic
components and systems. I suggest either a German V6/V8 diesel as
these are generally very sophisticated yet reliable and strong
performers for the GT type cruising that a Bristol might be used.
Alternatively, I like the PSA/Ford/Jaguar/Landrover 2.7/3.0 litre V6
diesel as well, especially the new 3.0 litre version in the XF. The
3.6 litre V8 diesel in the Range Rover is also a great motor.
Coupled with a good 6 speed auto and a reasonable 25-35mpg
possibility (realistic not over optimistic), the car would obtain
some green cred! Just a thought. Mind you the LPG version does
around 20mpg times the half cost of LPG making it a green alternative
as well with about the equivalent 40mpg cost relative to ULP. A 730d
I know owned by a client has been getting an overall average fuel
consumption of 35mpg in the past 18 months and it weighs at least
150kg more than a Blenheim. If one wanted to maintain a BMW link the
twin turbo 3.0 litre straight six (335/635/736d engine) with a six
speed auto or even a manual would be another fine choice.

Clyde.

[jimfoz]

The 3.6 V8 diesel would be the best bet. Can't see Bristol owners having any less cylinders. Even in a great lump of a Range Rover, it can despatch 60 in 8.5 seconds. In a Bristol, more like 7secs or less, but probably giving up to 35mpg.
Either that or (if Chrysler was still owned by DB) the V8 engine used in the Mercedes GL/ML420CDi
Anyone know what acceleration a stock Blenheim has at the moment? Is it really 6.3 to 60mph?

[Aleph]

I'm sorry, but a diesel? Even the modern ones are not nearly sophisticated
enough for a Bristol. Diesel is for lorries, generators and locomotives. And
indeed, anything less than 8 cylinders wont do.

[Hydroglen]

Unfortunately nothing is sacred or as we would like it to be.

Rolls and Bentley are NOT British in the sense they used to be.
Alfa Romeo and Lancia are Fiat.
Jaguar has Ford connections.
Even Ford gets some of it's engines made in Japan.
The list goes on........so a Bristol with a diesel is quite possible.

It probably boils down to getting engines from a manufacturer who is
flexible enough to sell in very small quantities.
Diesels have come a long way, and even back in the fifties the Cummings
diesel race car did a capital job at the Indy 500.
And I have a nice Mercedes diesel that gets me around nicely.

I have dealt with Chrysler in the past and found them great to work with. I
was only buyng a few engines, yet I was able to meet with their engineers
and discuss my needs and theories. They were interested, gave me valuable
advice and great tech help.
I hope Chrysler stays in business and can continue to supply Bristol cars.

Dorien

[Markus Berzborn]

Who needs this anyway? Maybe I'm not getting the point.

Regards,
Markus

[Jervaulx]

I agree. Much is made of how smooth and quiet BMW diesels are for example,
but that's only because of heavy soundproofing on the car. If you are stood
at the roadside and the engine is started, then the old Massey Ferguson
sound appears. Not very sophisticated to hear a clack clack clackerty clack
instead of the classy smooth petrol V8. Maybe even a hybrid Bristol could
be a possibility one day and may be insisted upon if the mafia state known
as the EU get their own way.

I gather it appears diesel will have higher tax than for petrol on passenger
cars, because diesel gives out poisions that are causing asthma in the young
and old to a degree the government are very concerned. They want to take
the economic benefit away from diesel for passeneger cars and get the
population driving petrol hybrids. The funny thing is, the 2 places with
the worst air pollution are at number 1, Marylebone bus station in London
and at number 2, the bus station in Piccadilly Gardens in Manchester.
Sounds like it's public transport they should address first.

Andrew

[406Special]

Andrew,

If you are able to find a Mercedes 320CDI or 420CDI or even a VW 5.0
V10 diesel running and stand alongside them, they do not sound like
tractors or even lorries. I have heard a 335d BMW at 5 paces and it
is definitely louder than say a 330i petrol motor, but nothing
obtrusive and no clackety clack. With throtlle opened they sound
very similar to a rumbling V8 with more torque and thrust. The
latest technology has them running smoother and cleaner than engines
of even 10 years ago. If fuel consumption or CO2 wasn't an issue,
then a lovely supercharged V8 or V6 from any of the Germans would do
the trick. As far as particulate emissions are concerned recent
exhaust technology and cleanup methods inline behind the exhaust
certainly sorts out diesels. Note Alfa/Fiat do this sort of thing as
do Citroen/Peugeot/Ford/Jag/Land Rover and the German trio (EU
requirements). Basically burns the output to become null and void.
I am not a diesel aficionado, but for relaxed torquey pulling power
at reasonable economy it works.

My 406 engine is still being put together, but it will produce around
300+ bhp and more than 320 lbsft between 2500-5500 rpm with about 75%
of its torque available from 1800-2200 rpm. It is a 2.5 litre turbo
inter-cooled 4 cylinder 8 valve petrol motor. Due to its similar
weight to the original Bristol 6 the power to weight ratio will be
greater than 220 bhp per metric tonne, which is pretty darn god. For
comparison, a 411 S3 has about 197 bhp per metric tonne, assuming the
claims for the 383ci V8 producing 335 bhp. I reckon it was closer to
275 bhp in actual fact (mine was no more than 310 with a large 4
barrel Holley and decent exhausts - dyno checked). So my lighter 2.5
litre engine should get a lot more nimble performance than a 6.3
litre Chrysler V8. But then if I wanted an automatic with long legs
and good economy (my 2.5 litre should get mid to late 20's mpg) I
would plump for a diesel like a 320CDI motor or if one was available
a stonking 5.0 litre V10 from VW, although I do like Range Rover's
3.6 litre V8 diesel - nice and compact.

Clyde

[Markus Berzborn]

Originally Posted by 406Special

If fuel consumption or CO2 wasn't an issue,
then a lovely supercharged V8 or V6 from any of the Germans would do
the trick.

I think this should not be an issue for a car costing 200,000+.

Will someone who is able to spend sums like that on a car really be very interested in fuel consumption?

And there are quite a lot of interesting engines around at the moment, just look at the 6 litre 12-cyl motors of Aston Martin, Mercedes, Bentley (i.e. VW), BMW (incl. Rolls-Royce). So I don't really see a scarcity of appropriate engines if Chrysler should stop production.

As for CO2, I personally don't believe in CO2 induced climate change at all. But that's another question.

Regards,
Markus

[seanmcs]

Was waiting for that. Thanks, Clyde.

Sean

[jimfoz]

I think fuel consumption is a factor and has been for years at Bristol. Why have they offered LPG as an alternative for the last 30 years? the LPG option has probably enabled the cars to be as theoretically cost effective as a 2.0litre Mondeo.

Also for the servicing, yes if you had a Merc or BMW engine fitted you could take it to their dealerships for servicing. It was suggested that you could take the Bristol to the Chrysler dealerships in the seventies for servicing (when they existed) as a 360V8 Chysler was briefly marketed in the UK at around this time. At the end of the day, the engine used, although good, is not the last word in sophistication compared to the modern day engines used by other luxury marques and a competant mechanic can probably do as much as a Bristol technician.

Obviously fitting say a V8 diesel is not easier said than done. All the ancillary bits would possibly have to be upgraded at the same time (ECU, electrics, air con etc)for compatibility, and for future improvements.