The limit for 50's

[Slow91z]

I just did a search on 50# injectors to see what the limit is on them...I'm looking to build a mid-11 sec. car, and I'm thinking of going with the new 57's, but there are so many good chip options with 50's.

I do know that my buddy back home went high 10's, but I can't remember if he has 50's or 55's (I think 55's, pretty sure he had to mod his computer), and he's still running a hotwired 340.

 

[humberto]

Running 11s with 50s you will be fine but running 10s then your going to be maxed out and playing with fire thats why the 72s will be my next mod

 

[Slow91z]

Sweet, that's what I wanted to hear.

 

[FlyinGN]

know whats funny?? I was looking thru some old GSCA newsletters from early 90's and saw that the thought on injectors was very different then today. There were cars in the 9's running 42 lb injectors with a single 36 lb 7th injector. Today that would be deemed impossible.
Interesting..

 

[Slow91z]

That's interesting...I didn't think it was a subject with to much leeway...Like I thought if you were out of injector you were out of injector, end of story...Well except you can up the fuel pressure, but that's not exactally the right answer.

 

[strikeeagle]

Well, welcome to the age of injector madness, where no injector is big enough.

50s support about 600 HP. Last time I checked, that's quite a lot...

 

[c&cgn]

All cars are different, but my car was out of fuel with the 50's at the 11.20 @ 118 range. Maybe with a double pumper I could have gone further? Dunno.... There are guys that have ran 10's with the 50's but I didn't want to risk it and have since upgraded.

 

[bsdlinux]

With the chips available to day there no need not to go to say 72s or 83s and be done with it.

 

[strikeeagle]

Agree, every car is different, but I wonder if guys are throwing bigger injectors at cars as a bandaid for a clogged screen, a narrowed pick-up, a weak fuel pump, insufficient voltage to the fuel pump, bad grounds, kinked hard lines, kinked hoses, a clogged fuel filter, a bad FPR, a funky chip, a bad sensor, etc.?

 

[FlyinGN]

exactly. If they were able to be way into the 9's with 42 lbers and a single 36 7th injector are we all over injecting with 55's or larger today? What made it different back then??

 

[Epitome]

Three most important things when it comes to making power with 50lb injectors (assuming the rest of the fuel system is up to snuff): the, chip, the chip and the chip. That is why experience with them varies so much. I 'know that in the right car with the right mods and chip, 50s can take you into the 10 without any issues at all without being on the edge.

 

[Slow91z]

I didn't expect this to turn into such a good discussion...Keep it coming guys, I'm learning.

 

[turbov6joe]

I took a set of stockers to 120 mph with the help of alky injection. The duty cycle on the stockers was 100% and I was at a "wall" so to speak with no more adjustability to the fueling. When I switched to 50's and alky I ended up turning the injector DC all the way down to 76% which put my EGT's right about the 1600º-1630º range which is perfect for my combo. The 50's will take your car into the 125 mph range no problem which is easily in the mid-high 10's with a good hook....that is if the chip is set (DC) to pound the injectors thus keeping them from being lazy which they can be at times. A buddy of mine has taken his 36 pounders into the 11.80's with no alky and a stock turbo....I believe he sees little to no KR and has good O2's. As stated earlier in this thread, it's all in the programing of the chip. Contact the guy listed in my sig if you want a good chip. He and I have put a lot of R&D into the 50's...both with and without alky.