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Injector spacing

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Old 10-02-23, 07:29 PM
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Injector spacing

Hello. I have a 88 FC3s which came without fuel rails or injectors. I got stock rails and new Denso injectors. I do not have the diffusers. Do I need the diffusers? I first installed using a spacer intead of the diffuser. Lost a top o-ring. Was wondering if my spacing was the cause? I have found no information listing the installation of the injectors with the diffuser. Thanks
Old 10-03-23, 04:59 PM
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welcome to the board.

the best i can do is ... you may need them. what size spacers do you have?

the thing is i think the injector actually "seats" on the top of the diffuser so without it, it can move under pressure.
Old 10-04-23, 10:32 AM
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Thanks for the advice. I found a thread that explained the need for a diffuser replacement spacer. Sold at Full Function Engineering.
Old 10-05-23, 10:32 AM
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I made some injector spacers to use in place of the stock diffusers. Used the dimensions from an old diffuser. The material is nylon impregnated carbon.

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Old 10-14-23, 02:04 PM
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have you tested them yet?
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