Injector Qs

[themud]

Want to replace my leaking injectors on my 95 with ones on a 98 and low miles but the dealership says they have different part #s can I still use the injectors on the 98 their both from I6 motors???
thanks
themud
:D

[GreedyXJ]

Here's a full list of Jeep injector specs:

2.5 I4:

'89-'90 #83504851 ?
'91-'95 #53007232 ?
'96-'98 #53030778 23.2lb/hr @ 49psi

3.7 V6:

'02->> #53031099 24.0lb/hr @ 49psi

4.0 I6:

'87-'90 #53003956 18.6lb/hr @ 39psi
'91-'93 #33007127 21.0lb/hr @ 39psi
'94-'95 #53030343 21.0lb/hr @ 39psi
'96-'98 #53030778 23.2lb/hr @ 49psi
'99-'01 #04854181 22.5lb/hr @ 49psi

[themud]

So do you think I can run the 98 injectors on my 95 and will I have problems with it or no??? I know its like 2lbs per hour more but with my mods intake exhaust and throttle body and spacer I should be able to use these right?
thanks
themud

[satan]

The injector flow-rate varies as the square root of the pressure drop across the injector.

The stock '91-'95 injectors are rated at 21 lb/hr @ 39 psi
The stock '96-'98 injectors are rated at 23.2 lb/hr @ 49 psi,
so at 39psi the '98s would flow flow ( sq. rt.(39/49) x 23.2 = 20.7) 20.7lb/hr -- so just a tiny bit less than what you're already running...

[MJR]

Fuel pressure was increased from 35 psi (87-90) to 45 psi (91-95) and again in 96-up. The rating on 87-90 should be 19.7.