A U20 will put out up to 220 HP it is a larger bore shorter stroke motor
than the L20b, U20 has larger ports, and valves.so it has more HP poetical.
the u20 cost more to rebuild stock over a stock L20b but if you want to get
the same horse power out of the L20b , The cost is about the same. I never
had a L20b 510 or roadster even come close to the acceleration of a pumped
up U20.
Now if you can find a old FIA racing head for the L20b ,that has the same
size valves and ports as the U20 that cost would be at least $2000.00 for
the head and then there's the cost of the solexes another 2000.00.
Mike Kerr
Roadster Restoration
3730 Todrob LN.
Placerville CA. 95667
Ph.# 530-644-6777
Fax# 530-644-7252
E-mail: mikekerr@innercite.com
Web page : http://www.innercite.com/~wolfgang
Visa & master card
-----Original Message-----
From: Joshua Milton <jt_milton@yahoo.com>
To: Howard Fletcher <hgf@netro.com.au>; 'Matt Peterson'
<pete_303@hotmail.com>; datsun-roadsters@autox.team.net
<datsun-roadsters@autox.team.net>
Date: Monday, November 01, 1999 2:37 PM
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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