FatDatSun Posted November 1, 2019 Report Share Posted November 1, 2019 Whoever said a Subaru loyal alternator was a direct fit for datsun 620 was a dam liar!!!! I just tried it. Bottom mounts DO NOT MOUNT up. Heads up for those wanting to upgrade. Quote Link to comment
datzenmike Posted November 1, 2019 Report Share Posted November 1, 2019 I've never heard of this. Quote Link to comment
yenpit Posted November 2, 2019 Report Share Posted November 2, 2019 Never heard of either............and what a GREAT way to introduce yourself!! 👍 A 620 could have an L16, an L18 or an L20B 4cyl engine......OR some other swap! The L16 L18 should have the same 2 bolt lower alternator mount, unless somebody modified it. The L20B has a 3 bolt lower mount & is different then the L16 L18......it too could have been modified. We are all here to help each other, but if you can't play nice, well......... 😟 Quote Link to comment
datzenmike Posted November 2, 2019 Report Share Posted November 2, 2019 The 620 alternator is fairly small and there is clearance problems with the lower rad hose and the grease fitting on the idler arm below it. Almost every car alternator is larger diameter and higher output but a larger belt and swinging it away from the block hits the idler arm. I managed a 720 block mount which raised it very slightly and a Z car lower rad inlet that is swept back more and moves the rad hose (again, very slightly) out of the way. Still had to put the belt on the pulley first then the two mounting bolts on the bottom. The Saturn alternator fits. There are write-up for alternator swaps on 620s..... Quote Link to comment
az_rat210 Posted November 4, 2019 Report Share Posted November 4, 2019 If you are just wanting a higher amp alternator and have a stock one take it to an alternator shop and have it rewound for higher amperage. Quote Link to comment
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