It could be more than timing. There are probably 1/2 dozen things that will
make it idle rough. My first suspect is a balance between the carbs. I
have never heard of anyone talk about it. It is too difficult to do when
you know how to do it. To try to explain it over this media would be hard
enough with someone that knows what I would be talking about, and I could
not even try with someone that knows nothing about carbs. Then again, it
may not even be that balancing the Carbs is the problem.
Pat
-----Original Message-----
From: Christopher Dunn <christopher-dunn@home.com>
To: 'John F Sandhoff' <sandhoff@csus.edu>; datsun-roadsters@autox.team.net
<datsun-roadsters@autox.team.net>
Date: Wednesday, June 06, 2001 9:45 PM
Subject: RE: A warning about tune-up specs
>well, here's my question. I have a 66, but the engine i believe is a 69.
the
>engine # is 61XXX. i don't belive i have any smog equip on my car and it
>does seem to idle a bit rough. haven't checked the timing, what should i
set
>it to????????.......Chris
>66 1600 (with engine #61XXX)
>
>-----Original Message-----
>From: owner-datsun-roadsters@autox.team.net
>[mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of John F
>Sandhoff
>Sent: Wednesday, June 06, 2001 4:02 PM
>To: datsun-roadsters@autox.team.net
>Subject: A warning about tune-up specs
>
>
>The following specification was posted:
>> 1965-1969 SPL311(1600 engine)
>> Basic Ignition Timing Degrees 16BTDC @ 600 RPM
>
>This is not completely correct.
>
>Stock, original, unmodified 68-70 cars have a distributor curved to aid
>in the reduction of smog emissions, thus they are timed differently.
>
>For PRE-68 cars (SU), timing is 16 BTDC
>
>For 68 and newer that have the FACTORY distributor, the timing is
>ZERO BTDC. If you run a stock 68-70 car with advance, you risk
>detonation and eventual engine destruction.
>
>If your 68 or newer car has either a pre-68 or a recurved distributor,
>then the 16 degree figure is probably correct.
>
>-- John
> John F Sandhoff sandhoff@csus.edu Sacramento, CA
|