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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