jarvitron Posted September 30, 2009 Report Share Posted September 30, 2009 Hello - I've recently bought a 1967 Datsun 520 (in the elusive "half-painted with purpleish house paint" shade), with the original J13 engine. While I hem and haw about what to replace it with (and the dismally loosey goosey fourspeed which lopes ponderously behind it), I am trying to make it run its level best. Aside from some quite obvious carburetor issues (leaking, misadjusted, runs eye-squidgingly rich), the engine runs like a little (slightly asthmatic) top, and when all the rodents run in the same direction, it gets me up to the speed limit in an acceptable amount of time (fast enough for Portland, Oregon anyways). However, there doesn't seem to be a carburetor vacuum source to run the distributor advance diaphragm off of. There is instead a manifold vacuum port hooked up to it. Does this engine have a vacuum retard instead? Is there a port I'm missing on the carb? Anybody have a good picture of how the vacuum line (really there is just the one) is supposed to run on a J13? I looked at the PDF's of the FSM (on Nicoforum) but couldn't see any clear pictures of the vacuum line. Thanks - Aaron Quote Link to comment
datzenmike Posted September 30, 2009 Report Share Posted September 30, 2009 It's possible that this runs off of manifold vacuum. All cars did at one time but around '70 in an attempt to curb emissions ported vacuum was used. Quote Link to comment
jarvitron Posted October 2, 2009 Author Report Share Posted October 2, 2009 Thanks. It seems to run fine with this source, but I've never seen one that ran from manifold before. Now to figure out why the one fog light wont' come on. Quote Link to comment
nukeday Posted October 2, 2009 Report Share Posted October 2, 2009 Welcome! 520's seem to be popping up all over. Please share some photos when you have time. Quote Link to comment
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