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Far left is the OEM Cadillac injectors that came with the intake. The two center injectors are from Ford 302 V8 CFI (Central Fuel Injection - Ford's throttle-body injection. It uses two injectors per car.) They are equivalent, but the darker blue is made by Nippon-Denso, while the lighter is Bosch. The orange is from a non-turbo RX-7. |
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The Cadillac used a plug that fit into the connector, while the later injectors use a plug that fits around the entire plug and locks into place. The Caddy plug can work with the new style connectors, BTW. |
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The o-ring groove of all four injectors is 8mm OD. The wider section is bigger on the RX-7 injector (orange.) I bored out the Caddy fuel rail to work with the RX-7 o-ring, since I know where to find those, and it allows me to use the RX-7 injectors if there's a problem with the Ford CFI units. |
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They're all pintle-style injectors, just different pintle caps. |
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The Caddy intake uses more-or-less the standard 14mm o-rings. The factory style is a rectangular-section, as seen on the injector, far left. The three newer injectors have a slightly larger pintle cap than the Caddy one, but no problem with the right o-ring. |
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