Richard,
That sounds about right. My mileage figures are measures in minutes of track
time. A full tank is less than 1hrs worth!
Regards
Trev
-----Original Message-----
From: Richard Clough [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, 28 March 2001 20:48
To: [EMAIL PROTECTED]
Subject: Re: L20B mods. + mpg
Have you rejetted it to suit your L20? or just plonked it on?
Carbies are tuned instruments that require the right airflow speeds and jet
sizes to correctly mix the fuel through the rev range. It sounds like its
delivering fuel at the rate a 240K would use it but the 240 has 2 more
cylinders to use it and hence higher air flows to mix it in.
On the other hand hard driving will pull down the fuel economy, but speed
costs money as we all know. I used to be driven in an L18 powered 1600 hard
enough to get it down to less than 5 MPG. But that was in tight forest
roads at continuously high revs, sucking fuel through 4 45mm weber chokes -
quite expensive - great fun. I am talking about 80 kms to a complete
tankful of fuel! How does 20MPG look now!
----- Original Message -----
From: "1600 BoY" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, 26 March 2001 23:15 PM
Subject: Re: L20B mods. + mpg
> u said u should get 30plus mpg with sus. i got a l20b, mild cam, and i
dont
> know if its the way i drive it(hard) - or not but im getting about
20mpg...
> its got a 240k carby on it.
>
> any suggestions why it would be so low?
>
> thanks,
> ryan
>
>
> >From: "Richard Clough" <[EMAIL PROTECTED]>
> >Reply-To: [EMAIL PROTECTED]
> >To: <[EMAIL PROTECTED]>
> >Subject: Re: L20B mods.
> >Date: Mon, 26 Mar 2001 22:15:37 +1000
> >
> >I agree, SU's are the carbs for road performance and fuel economy, they
> >dont
> >have inbuilt power jets primed with an accelerator pump. They dont come
on
> >really hard but they let an engine breathe a lot better than a stock
carby
> >set up.
> >You should easily get 9 litres/100Kms or 30 plus MPG. with performance
that
> >will surprise your V8 Commodore punters.
> >
> >----- Original Message -----
> >From: "Michael Cassidy" <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>
> >Sent: Saturday, 24 March 2001 23:58 PM
> >Subject: Re: L20B mods.
> >
> >
> > > I've used Su's before, good carbs, better performance, Great induction
> >noise and
> > > they DONT use alot of petrol, Actually i think the economy didn't
change
> >much at
> > > all with the change to su's... Trust me give em a go.
> > >
> > > "Paul W. J. Stanley" wrote:
> > >
> > > > Thanks for the info Ken. I'm thinking of adding a few 'bits' to my
> >1981
> >200B
> > > > L20B. Does anyone know the difference between the L20Bs that came
out
> >in
> > > > various Datsuns? I guess the 'desirable features' is all you need to
> >know.
> > > >
> > > > I can get some extractors and the electronic ignition. Is there a
> >different
> > > > water pump for the auto? My motor is from an automatic. I can also
get
> >the
> > > > clutch and flywheel, and a 'big' cam. That's the only info my friend
> >has
> > > > about it...he says it's extreme.
> > > >
> > > > I wouldn't mind DIY port work too...might look into that. I've got a
> >ye
> >olde
> > > > carby...I dont think I'll get twin SUs because I'm a cheapskate on
> >fuel
> >(you
> > > > have to use PULP with 9.5:1 don't you?)
> > > >
> > > > Paul
> > > >
> > > > ----- Original Message -----
> > > > From: Ken Abraham <[EMAIL PROTECTED]>
> > > > To: <[EMAIL PROTECTED]>
> > > > Sent: Saturday, March 24, 2001 3:47 PM
> > > > Subject: Re: L20B mods.
> > > >
> > > > > G'day all,
> > > > >
> > > > > Some things to consider for a mild L20B
> > > > > I have done these things to my motor and am reasonably happy with
> >the
> > > > > results, there is a significant increase in performance and change
> >of
> > > > > 'character' compared to stock L20B.
> > > > > I have included approximate prices if you get parts from U-Pull
and
> > > > Trading
> > > > > post.
> > > > >
> > > > > 1. Start with S2 Bluebird Motor (check for bore wear!). Desirable
> >features
> > > > > include, big valves, 264degree SSS camshaft, strong crank, lowish
> >mileage.
> > > > > cost 2nd hand $100
> > > > > 2. Electronic Ignition (From some Bluebirds) cost $50
> > > > > 3. Automatic transmission water pump and fan (i.e viscous clutch,
> >fan
> >does
> > > > > not spin faster than 2500 Rpm) cost $25
> > > > > 4. 6 cylinder flywheel and clutch (1 kilo lighter, bigger clutch,
> >very
> > > > > noticable performance boost in 1st gear) ;) cost $40
> > > > > 5. Extractors. cost $ 50 - $100
> > > > > 6. Twin SU (Genuine) carburettors on SSS manifold. cost ~$150
> > > > > 7. Port work. Open inlets to 1.5 inches for SSS manifold, modify
> >horrible
> > > > > factory exaust port. cost ~$10 for bits and pieces needed to DIY
> > > > > 8. Shave head ~1mm to increase compression to about 9.5:1 cost
~$30
> > > > > 9. Gasket kit and sundries cost ~$150
> > > > >
> > > > > All up about $600 - less if you shop around and buy wisely.
> > > > > Regards,
> > > > > Nick
> > > > > 1978 Datsun Stanza
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: Brian K. <[EMAIL PROTECTED]>
> > > > > To: Thudd <[EMAIL PROTECTED]>
> > > > > Sent: Friday, 23 March 2001 3:06 PM
> > > > > Subject: Newbie
> > > > >
> > > > >
> > > > > > Hello all on the list!
> > > > > >
> > > > > > I have an old faithful 180B which has served me well for many
> >years,
> > > > > > however the engine is now approaching the end of its life. I
> >could
> >get
> > > > it
> > > > > > rebuilt, but for not much more I can get a new engine and have
> >that
> > > > > > done. I asked one workshop on the recommended option, and he
> >suggested
> > > > an
> > > > > > L20B motor. This seems like a good option to me; it's an easy
> >swap
> >and
> > > > > I'm
> > > > > > not trying to make a performance car out of it, just something
> >with
> >a
> > > > > > little more urge than normal. However, anything that I *can*
get
> >out of
> > > > > > it, I *will* (within a fairly tight budget; I don't want to
spend
> >heaps
> > > > > and
> > > > > > gain little).
> > > > > >
> > > > > > So what advice can anyone give on an L20B swap into an 180B?
What
> >can
> > > > be
> > > > > > done to the engine during a rebuild that would extract a little
> >more
> > > > > power,
> > > > > > without going overboard? By 'overboard', I mean I'm not
> >interested
> >in
> > > > > > building some 200HP race-ready monster. This is my daily
driver,
> >and
> > > > > > spends most of its time doing a highway commute.
> > > > > >
> > > > > > The workshop suggested putting a different head on the motor; I
> >can't
> > > > > > remember which one but he said it'd be about $400 extra
(including
> > > > > > polishing etc). A new exhaust system will definitely go on, I
> >just
> > > > don't
> > > > > > know what yet.
> > > > > >
> > > > > > Thanks in advance,
> > > > > >
> > > > > > Brian K.
> > > > > >
> > > > >
> > > >
> > >
> >
>
> _________________________________________________________________________
> Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
>
--membersozdat-------------------------------------------------------
OZDAT Mailing List Please Note:-
Send (un)subscribe requests to [EMAIL PROTECTED]
Send submissions to [EMAIL PROTECTED]
No unauthorised redistribution of this email
http://www.ozdat.com/ozdatonline/index.htm
http://www.ozdat.com/ozdatonline/listindex.html
http://www.mail-archive.com/[email protected]/
---------------------------------------------------------------------
