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Fwd: SU Needles & U20

To: datsun-roadsters@autox.team.net
Subject: Fwd: SU Needles & U20
From: Tomet9@aol.com
Date: Mon, 21 May 2001 11:20:21 EDT
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From: Tomet9@aol.com
Full-name: Tomet9
Message-ID: <ca.154afe2b.28393a4b@aol.com>
Date: Sun, 20 May 2001 11:18:35 EDT
Subject: Re: SU Needles & U20
To: datsun-roadsters@autox.team.net
CC: Tomet9@aol.com
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Hi list,

  Are any of you listers w/U20's experiencing rough idle problems? I find 
that If I try for a clean steady idle that usually mid/top end performance 
suffers. If I richen the idle then mid/top end improves but as a result it 
rough idles and I lose off the line low end performance. I was running stock 
N17's. A few years ago Dean at fairlady products turned me on to a set of 
N25, I found these to give you a lot cleaner and leaner low end with enhanced 
mid/top end go. I still wanted more, Now I've taken these N25's and put them 
in a Power drill and sanded them a bit w/400 grit wetsand paper. I'm here to 
say that I'm happy w/the result. I've got a clean leanish idle smooth and 
steady with a wallop mid rpm go and pretty good top end performance. Very 
good throttle response I might add. I found that it's very easy to go too far 
on sanding them though,(went thru a set before I got it right). These needles 
are a tad shorter than the N17 and definitely eliminate flat spots in the 
5000-6000 rpms. Now as far as what these needles were made for originally, I 
don't know. Dean said they were replacements for U20's but never have I heard 
about these from other vendors or nissan. If any body has a clue for the 
original application I'd like to know. Thought I'd pass it on, bang for the 
buck it cost me $25.00 for the set. I think it's worth it.
 
          Tom Prather -another red roadster

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