Fuel Injector Questions

[car12586]

Just got a email back from Five O recommending the Bosch/Ford Cobra XR3E 24 lb injectors for my application. Are these similar to what you were using SilverXJ?

[car12586]

Something like these perhaps?

http://cgi.ebay.com/ebaymotors/Mustang- ... t_1728wt_0

[Comanche91]

I found this place on-line and asked for a quote for the Mopar 53030778 injectors I use; they were $26.50 each, and are new factory parts. That's less than 1/2 of anywhere else I could find. They have many listed, it might be worth a shot to ask for a quote for the quantity and type you want.

http://www.surplustraders.net/a/0803.shtml

[car12586]

Do those cobra XR3E 24#'s sound like a good option?

[gradon]

They sound like an excellent option. Those probably are rated 24#@43.5psi and thus will also flow 25.5#@49psi like the lt1s. Good price too. I didn't see if they were reconditioned or just take offs. I bought 8 recon'd lt1s that were ultrasonic cleaned, new filter baskets installed, and flow matched for like $66.

[SilverXJ]

Just got a email back from Five O recommending the Bosch/Ford Cobra XR3E 24 lb injectors for my application. Are these similar to what you were using SilverXJ?

Those were the ones that flowed too much that I used. IIRC they flow 24.0lb/hr @ 39psi. Which would be around 26.9 lb at 49 psi.

[gradon]

Sound excellent in theory but silver obviously has had experience so take his word b4 mine. Mine might be so thirsty due to the ported head and high comp--why I think 27# would be okay on mine. I didn't see if you had any head work done, but maybe the 0331 head doesn't flow as much air(but it has the freer flowing intake?) and therefore need as much gas as the older 7120&0630s(why they used 22.5# in the first place) I'd definitely get some that flow at least 24@49psi.

[car12586]

My head is off a 98 and is ported and polished so it should flow pretty good. Silver what do you think about these? Five O called them 24# but not sure at what pressure.

[SilverXJ]

Sound excellent in theory but silver obviously has had experience so take his word b4 mine. Mine might be so thirsty due to the ported head and high comp--why I think 27# would be okay on mine. I didn't see if you had any head work done, but maybe the 0331 head doesn't flow as much air(but it has the freer flowing intake?) and therefore need as much gas as the older 7120&0630s(why they used 22.5# in the first place) I'd definitely get some that flow at least 24@49psi.

My experience was with my ported and polished 0630 head and intake, Comp Cam 68-231-4, Thorley header, 2.5" exhaust, 63mm throttle body, SCR:9.76, DCR: 8.34, and quench: .078". It is probably coming down to PCM differences.

[car12586]

So what injectors did you end up going with Silver? I know you said you hadnt installed them yet.

[car12586]

For your application and mods we sell a Bosch/Ford Cobra XR3E 24lb fuel injector.
Our regular price for this set is $239.50. They are on special right now for $224.99 plus shipping.

Bruce Holt,
Fiveomotorsport

Re: Would this injector have a EV6 style connector for my harness? What would be the flow rate at 49psi for my fuel rail?

Me

Re: Re: Yes EV6 connector. Flow rate at 49 psi. will be 25.5lbs/hr.

Fiveomotorsport

Hmm????

[SilverXJ]

So what injectors did you end up going with Silver? I know you said you hadnt installed them yet.

I have a set of Bosch XF2E to go in.

[gradon]

Aren't those for the escape v-6? Ford's 3.8l?

[SilverXJ]

I believe they are 3.8L injectors.

[shockcocker04]

will these injectors work with my 49psi rail 4.7l stroker? http://cgi.ebay.com/ebaymotors/Ford-Mus ... ccessories