Factoid on #8 Injector

[BraveHeartCalif]

I just talked to my Ford Mech. And he told me that the #8 injector is a differant part # then 1-7 injectors. Apparently becuz its the last in the line. Ford made it pump more then the rest (1-7). He said some people when they replace all there injectors they replace them all with the #8. Which he says youll pu about an additional 15hp. Interesting info for me anyways...

[dereku]

Yup its a long pull or some thing. You dont need it if you have a regulated return

[burmad69]

I'm not so sure about that one, I was parts manager at a Ford dealer for ten years and never heard that one before. when we replaced injectors we installed 8 of the same part#

[scott52575]

Hold a little bit more fuel ...............spend 130 on a riff raff regulated return and never worry about #8 being starved for fuel...

the only injector I ever had truely fail was 8 it cuased a knock that sounded like a lower main bearing was going scared me to death!

[Cok_Diesel]

Where did you find it for that price?

[Jarrod B]

my obs had all 8 injectors with the same part number. but they were aftermarket.

[SJB]

Originally Posted by Cok_Diesel

Where did you find it for that price?

If you are asking about the regulated return, this is what he is talking about. I would also recommend the HPx.

Riffraff Diesel: Fuel Rail Crossover™

Riffraff Diesel: RDP SS HPX

[4fingers]

its called a long lead injector. They put the injector in there to try and cure the fuel cackle thats commonly associated with the dead head fuel system. put on a reg return and no need for the different injector.

[crazyasswhiteboy]

Originally Posted by scott52575

Hold a little bit more fuel ...............spend 130 on a riff raff regulated return and never worry about #8 being starved for fuel...

the only injector I ever had truely fail was 8 it cuased a knock that sounded like a lower main bearing was going scared me to death!

im having a knock like that as well. did it do it more when it was in gear and sounds like something tapping on the oil pan? and ive notice idle is slightly rougher than it used to be. how would i check this for sure?

[DZL JIM]

The #8 AE/LongLead fixed some trucks but had/has no affect on other trucks.
The internal difference from the normal AD is so minor, it injects maybe 1 cc more at WOT which hardly equates to 15 hp. There is no practical reason to put 8 AE injectors in, there is essentially no difference in power.