Howard and All,
Being a 1600 owner, I have to "imagine" anything U20
related. :)
The head on a U20 is much easier to open up and you
can take them a lot farther than I thought, but the
real reason for the upgrade is price and availability.
I would love to go to a U20 but I couldnt even
imagine the amount of money it would take to rebuild
one.
Couldnt I build up an L20b with better power for less
than bringing a stock U20 back to life? Not to
mention I could pick up a 5spd transmission for an L
for $150 +/-. Unfortunately I know more about the Ls
than I do about the U20.
joshua milton
69 1600
encino, ca
--- Howard Fletcher <hgf@netro.com.au> wrote:
> Hi Josh and all
>
> One meaning of "imagining" is perceiving something
> fictional and I agree
> with that.
>
> A ported U20 with the mods described and some valve
> machining can go to
> 170bhp and more, I have one with similar mods that
> has been dynoed at a
> little over 170 but the compression is actually
> lower than std (9.2 to 1)
> (my Silver car).
>
> The mods on my race U20 are a little more exotic and
> mine pulls 228bhp (so
> says the dyno). (normally aspirated with 11.8 to 1
> compression). (My Blue
> and white race car on Gordon's site).
>
> I agree on the parts bit. I have used modified L
> series titanium valve
> retainers on the U20.
>
> The design efficiency of the U20 is far greater,
> take the Heads side by
> side and look at the huge ports on the U20 compared
> with the L series.
>
> Regards,
>
> Howard
>
> -----Original Message-----
> From: Joshua Milton [SMTP:jt_milton@yahoo.com]
> Sent: Tuesday, 2 November 1999 9:22
> To: Howard Fletcher; 'Matt Peterson';
> datsun-roadsters@autox.team.net
> Subject: RE: Found a L20b
>
> It seems I will have to continue as devils advocate
> for swaps.
> >From what I gather there isnt much more that you
> can
> do to a U20 beyond going solexs, header and a cam.
> Which is great power! But thats only putting out
> around 150hp, after some porting I couldnt imagine
> it
> going up much more from there.
> An L20b can get 170hp with the same efforts. I have
> not made the swap nor have I driven any Roadsters
> with
> the swap but I can tell you the L20b in a 510
> screams
> and pulls hard! Its also about the easiest engine
> on
> the planet to get parts for (aftermarket or stock).
> I would imagine Ronnie Day could tell you more about
> the pluses and minuses of the L.
>
> have fun,
> joshua milton
> 69 1600
> encino, ca
>
> --- Howard Fletcher <hgf@netro.com.au> wrote:
> > Hi Matt and all
> >
> > By reputation look for mediocre performance and
> less
> > potential than a U20 solex .
> >
> > Has anyone been really satisfied with such a swap?
> > and was it worth the time and effort?
> >
> > So many of these projects start and go nowhere,
> due
> > to all sorts of fitting problems.
> >
> > A U20 or h20 Crank mod (relatively easy) on a 1600
> > or a swap for an SR20 (with all the effort) would
> > make some sense.
> > or even an outright H20 swap (which would be
> easy).
> >
> > Regards,
> >
> > Howard
> >
> >
> > -----Original Message-----
> > From: Matt Peterson [SMTP:pete_303@hotmail.com]
> > Sent: Saturday, 30 October 1999 12:48
> > To: datsun-roadsters@autox.team.net
> > Subject: Found a L20b
> >
> > Hi everyone,
> >
> > As you might remember from previous postings I am
> > looking for a L20b engine
> > for a swap. Well I found one today and it was
> only
> > 15 miles away! I went
> > to a local salvage yard today not expecting to
> find
> > anything but when I
> > asked the guy if he had any Datsuns he said that
> he
> > had a bunch out back.
> > They were way in the back of the place. There
> were
> > 210s, 510s, along with a
> > bunch of other _10s. I don't remember all of the
> > models as all those cars
> > are before my time. It was the first time I saw
> > many of those models first
> > hand (very cool). He also had a 240Z and a 280Z.
> > As I was walking out he asked me if I found what I
> > was looking for. I said
> > that I didn't and asked if he had any Nissan
> trucks
> > thinking I might find a
> > KA24. It turns out that he has a 77? Datsun truck
> > with a L20b engine. Just
> > what I was looking for! It doesn't have a starter
> > so I couldn't see how
> > well it ran but he says that it runs well and that
> > the transmision (4spd) is
> > solid.
> > Now that I'm all excited I would like to ask.
> > 1. Are there any key things I should look for
> that
> > would tell me anything
> > about the shape of the engine?
> > 2. Are there any particular sounds to listen for?
> > I just don't want to buy the engine and have it
> crap
> > out on me in a short
> > while.
> > Thanks everyone
> >
> > Matt Peterson
> > 68 1600
> > Zimmerman, MN
> >
> > P.S. He wants $250 for the engine and trans which
> > seems like a good price
> > to me if it's all he says it is.
> >
> >
>
>
> =====
>
>
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