Perry,
I used to think all roadster engines shook and rocked from side to side while
idling. Now I know better, it doesn't have to be that way.When I rebuilt my
2000 four years ago, I rebuilt the carbs and matched them as closely as I
could. The engine purred at low idle with no shimmy or shake, and had smooth
acceleration. A lot of problems can be traced to poorly tuned carbs. I'm going
to have Keith Williams do a set for me so they'll last longer than me doing
them.
Fred - SSF
'66 2L
'70 1600
----- Original Message -----
From: Perry Smith
To: Tom Hendricksen ; roadster katman ; Roadsters E-Mail List
Sent: Tuesday, July 15, 2003 2:19 PM
Subject: RE: Back from Mt Shasta
Fred,
When I purchased my Roadster a year ago it ran horribly (smoke and all -
just like an MG). I knew it could be fixed since I had never seen a tuned
Datsun run like that before. Anyway, I contacted the Z-therapy website
(ztherapy.com) and ordered his rebuilt unit (w/core). I was impressed that
they came already adjusted - well, pretty much anyway (although there was also
a video included that walks you though the adjustment process) and had two
features I really liked. First, it included grose-jet valves on the float
chambers (addressing a safety problem of fuel overflow onto the manifold
problem - even though you still must have fuel line extended below the
manifold.) Second - and I REALLY liked this, it came remanufactured with
roller bearings (high misalignment type for warped manifolds) on the throttle
shaft that should make them last for years - certainly until the car is a
heap. The original Hitachi car! bs used sleve bearings that will eventually
wear out no matter what you do. This comment is based on my brother's remarks
(he is a professional mechnic).
Also, one other problem I encountered was when I took the domes off the
original carbs (SU-type, of course), I also found that they had mismatched
springs!!!. Okay horrors(!), as this was probably the problem in the first
place, but hey, I was happy to get it running smoothly. I suspect that over
35-years and various mechanics working on it before me, they had assumed it
was the same as the original British SU's and went ahead with the next best
spring replacement they had.
Perry
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