Quote:
Originally Posted by tomtom72
.......
Steve, the fuel rail O-rings are all the o-rings at all the connection points in the fuel rail piping. Just ask Jerry to point out the kit. The injectors come with all the needed O-rings to install them, the fuel rail kit is a separate part......... 
Tom |
The o-ring seals always seem to be a bit confusing, so I will see if I can make it a little bit clearer.
90~92
Originally, the 90~92 model injectors had a different external configuration, between primary & secondary. The difference only pertained to the bottom of the injector, both primary & secondary injectors flowed the same amount of fuel.
The secondary injector seals, both top (fuel rail) & bottom (injector housing), were the same small o-ring, PN 17112222, and fit into a groove on the injector, created with a thin flange.
The primary injector seals used the same o-ring seal, PN 17112222 for the TOP ONLY (at the fuel rail). The bottom seal, PN 10067600, does not install on the injector, but rather inside of the injector housing and seals on the o.d. of the injector, slightly above the bottom. The primary injector did not have a metal flange on the bottom to retain a lower o-ring like the secondary injector did.
So, in summary, a complete set of injector seals, upper & lower, consists of 24pcs PN 17112222 (small O-rings) and 8pcs PN 10067600 (large O-rings).
Today, aftermarket injectors, FIC, Accel, etc., are identical for both primary & secondary, i.e. they have the metal flange to retain an o-ring on both the top AND bottom. Herein lies the confusion for first-timers.
Typically, a new set of injectors will come with 32pcs of the small o-ring, PN 17112222 and NO, zip, zero, nada primary injector lower o-ring seals, PN 10067600.
Do not install the small o-ring on the bottom of the primary injectors. it will not hurt anything, but it does not seal and serves no purpose. if it is on the primary injector already, then remove it.
93~95
Lot simpler, same o-ring seal, top & bottom for both primary & secondary injectors.
Jerry's Gaskets Combo Kits
Speaking only about Fuel Injector Maintenance Kits (we offer several different Combo Kits, depending on the work to be performed).
90~92
http://jerrysgaskets.com/store2/root...roducts_id=459
This kit contains the following;
Gaskets & seals included in this kit are as follows;- PN 10168684 Gasket Set, Intake Plenum
- PN 14104675-V Seal Set, Fuel Feed & Return Pipe (VITON-A)
- PN 17112222-24V Seal Set, U-Primary & Secondary Inj & L- Secondary Inj (VITON-A)
- PN 10067600-V Seal Set, L-Primary Inj (VITON-A)
I have confirmed that FIC Injectors come with all new Viton o-ring
SMALL seals PN 17112222, needed for either the 90~92 or 93~95. They DO NOT come with the primary injector lower seal.
I have not been able to confirm whether the o-ring seals on other aftermarket injectors are Buna-N or Viton. We strongly recommend using Viton over Buna-N when ethanol blended gasoline is used, E10, E15 ,etc.
IF new injectors are being installed, and they are furnished with new o-ring seals of a suitable material, then there is significant savings in ordering just what you need as opposed to the Combo Kit listed above. There is no need to purchase a kit that has 24pcs PN 17112222 if they come with the injectors. Instead, buy the remaining individual items separately.
93~95
http://jerrysgaskets.com/store2/root...roducts_id=455
Same as for 90~92 above..... if you are buying new injectors From FIC, no need to buy the Combo Kit. The O-rings that come with the injectors are Viton and ready to install. Save money, do not buy the Combo Kit, just order the remaining items separately.
I hope this helps to shed some light on the different styles of injectors and the seal configuration, as well as different seal materials. If you have any questions, feel free to contact me.