From: D Walford on
On 29/04/2010 9:14 AM, Athol wrote:
> D Walford<dwalford(a)internode.on.net> wrote:
>> On 28/04/2010 9:18 PM, Athol wrote:
>
>>> 1980 Volvo with original PRV 2.7L V6 converted to straight LPG, original Asin
>>> Warner 55 auto& open 3.54:1 Dana 30 diff. Changed to all cast iron 350 chev,
>>> T350 auto, 2.47:1 9" detroit locker, still on straight LPG, but without the cowl
>>> induction cold air intake or extractors that the engine had in the HG ute...
>
>>> Economy of the 350 was immediately better than the economy of the PRV V6 had
>>> ever been, and it no longer struggled up hills...
>
>> 2.47:1?
>> Is that a typo?
>
> Nope. With a 1:1 top gear in the T350, no lockup convertor and a smaller
> diameter tyre than in HQ-WB Holdens, this is about equivalent to a 2.60
> ratio used from about HX to WB. If I ever get around to building up and
> fitting a T700, I'll then have an overdrive top gear and a lockup convertor
> and will consider changing the ratio. First gear in a T700 is a lot lower
> too, so I might still stay with the 2.47.
>
I'm used to 4.3 and 4.1 diffs in Clubmans so 2.47 seems very high.


Daryl
From: D Walford on
On 29/04/2010 4:46 PM, Athol wrote:
> D Walford<dwalford(a)internode.on.net> wrote:
>
>> I'm used to 4.3 and 4.1 diffs in Clubmans so 2.47 seems very high.
>
> 2.47 is the tallest genuine Ford ratio available for a 9". I believe
> that aftermarket companies make them up to 2.0 for salt flats racing,
> where they are combined with overdrive gearboxes to get quite nice top
> gears.
>
> Obviously, V8s just don't need to rev as much as smaller engines do.
> That takes the discussion full circle. Higher revving smaller engine
> getting poorer economy than low revving larger engine. Hence the need
> to put an alloy SBC into a clubman. :-)
>
That's been done several times, Elfin was one and the result wasn't all
that good, they go like hell if you can get the power to the ground but
they handle like dogs because the engine is too heavy and it unbalances
the chassis.
Its amazing how much fuel a small engine can use when used under race
conditions, the 1.6lt 4AGE 20v in the mates race car can use more than
20lts/100klm and the car only weighs 530kg.


Daryl
From: Dan--- on
"Noddy" <me(a)home.com> wrote in message
news:4bd66d4b$0$23085$c30e37c6(a)exi-reader.telstra.net...
>
> "D Walford" <dwalford(a)internode.on.net> wrote in message
> news:4bd4f46e$0$27833$c3e8da3(a)news.astraweb.com...
>
>> Overall driving experience is where they excel, they might not be the
>> most economical but for a powerful engine their economy is hard to beat,
>> IMO their good point is you have have both power and good economy in the
>> one engine controlled simply by how much right foot you use.
>> Mate used to have a V8 VZ Calais for a company car, he averaged
>> 11.00lts/100klm over the 3yrs he had it including towing his Clubman on
>> trailer to various events which is not bad economy overall.
>
> That fuckwit Oz seems to be making gross generalisations about "V8's" and
> "V6's" when everyone else is talking about specific engines.
>
> *Some* V8's, like a 4V Cleveland for example, have appalling fuel
> consumption issues, whereas others, such as the GenIII or in particular
> the GenI,V have quite outstanding consumption characteristics despite them
> being around the same capacity and of a similar configuration. The later
> engine has lighter internal components and reduced friction which goes
> part of the way to helping with it's economy, but the main difference is
> in it's engine management system and the way it meters fuel. The
> management system on the GenIV engine is excellent, and ensures that the
> GenIV is one of the most economical engines for it's size in the world.

An E2 Maloo
http://www.carpoint.com.au/reviews/2010/sports/hsv/maloo/long-term-test-hsv-e2-maloo-r8-19198

"Driving normally, that is sticking to the speed limit, running the
air-conditioning, and not being afraid to use the accelerator when
overtaking, I had gotten an amazing 10.3L/100km out of the Maloo."

Not too shabby for a show pony ute. :-)

---
Regards
Dan.


From: John_H on
D Walford wrote:
>Its amazing how much fuel a small engine can use when used under race
>conditions, the 1.6lt 4AGE 20v in the mates race car can use more than
>20lts/100klm and the car only weighs 530kg.

How much more? :)

I used to get a very predicable 9 mpg out of an RD350 Yamaha (0.350
litre 2-stroke) on the track. That's around 30 litre per 100km.

--
John H
From: hippo on
John_H wrote:
>
> D Walford wrote:
> >Its amazing how much fuel a small engine can use when used under race
> >conditions, the 1.6lt 4AGE 20v in the mates race car can use more than
> >20lts/100klm and the car only weighs 530kg.
>
> How much more? :)
>
> I used to get a very predicable 9 mpg out of an RD350 Yamaha (0.350
> litre 2-stroke) on the track. That's around 30 litre per 100km.
>

Plus another litre or three of two stroke oil I'd guess. What did it rev
to?

--
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