datsun-roadsters
[Top] [All Lists]

A warning about tune-up specs

To: datsun-roadsters@autox.team.net
Subject: A warning about tune-up specs
From: "John F Sandhoff" <sandhoff@csus.edu>
Date: Wed, 6 Jun 2001 16:02:28 -0700
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

<Prev in Thread] Current Thread [Next in Thread>