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.
> >
>
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