I was looking at injectors and I read that it is recommended to get 42lb injectors for a 2.8 pulley. I was planning on going with 60lbers but Now I'm concernered that its not healthy for my car or something. If I had got 60lbers with a 2.8 pulley and a tune. Would I be safe?

 

i got the same question like a month ago a lot ppl with 60 lbs are having problem to me they are way to big!! well it depend with the 42 the idc (injector duty circle) will be high meaning the overwork but in my case i got pte 44lbs and i change gear before 6500 rmp in any case is more than enought to get a perfect gear after 6000 rpm the car dont pull that hard anymore just make sure you get a good hp tunner set up and make sure red line rmp is 7000

 

I wouldn't mind hearing some input on this myself! Who here, who has a good/professional tune is having problems with 60#'s? I don't mean the guys who got a tune by so and so emailed to them and they loaded onto their PCM through HPtuners. I mean the guys with professional, wideband/dyno tuned cars!! Getting mine done at New Era this friday and going with 60's and a 2.8.

 

A lot depends on your setup and how well tuned it is.

My car has a 2.79" pulley with 42lbs injectors tuned by a professional on a loaded mustang dyno. My car is absolutely safe. I had originally purchased 60lbs/hr injectors but we took them out and put Lucas 42's in because the 60's we just not necessary.

Everyone has their own opinion. I would leave it up to your tuner and how comfortable they are with adjusting values accordingly...

 

well if 42lbs are to small and 60s are too big, try something like a 55lb injector

 

I have always wanted to throw 50's in. Should be just right. No point for me; though, I'll be going turbo eventually and needing those 60's back...

 

um i think i am doing that down the road maibe 50lbs sound perfect or better yet get a option b from saturn red line it keep the engine cooler so let chance of boooooommmmm lol a lot cheaper too

 

42's are good to around the 2.8 mark.

I tune my own car, and multiple local people, i've also done work with DJT on his T-IRL and i talk with most the big names in the LSJ tuning circle, you can run 60's and have a totally drivable car, i don't have any idle surges, the car runs fine with the AC on, ect.

for me there is simply one answer, get the 60's and you'll be fine no matter what. when you have a well done tune you'll never know you have larger injectors....hell i bet i get better MPG then most as well.....the trick to this is car is all in the tune.

 

When we initially had the 60's in my car, it idled better than stock...

 

if you get the right "tune" a 60 car will far exceed what any 42 will do.

idle, part throttle, wide open.

 

GOOD! New Era is doing mine, they're a vendor on this site and I have heard nothing but good about their tuning. He told me with a 2.8 and 42's anything past 6000RPM would be maxxing the injectors.

I feel like the people having problems are the ones getting a generic "blanket" tune that is good for someone else with the same mods...but of course a different car. I've heard it a million times, "Hey man I have a tune for 2.8 and 60's I will email it to you"

 

And I've talked to two tuners that I've heard nothing but good things about. Matt Hauffe @ Tune Time Performance and Ted Jannetty @ Jannetty Racing. Both are confident that Lucas 42's are good to 300WHP.

I agree, though, that improper tuning is the "usual suspect" when it comes to popped engines...

 

I had 42's just recently upped to 60's. I would suggest those, this way you have room to drop pulley size if you want to.

 

I agree, just get a good tune...

 

any injector around this size can make solid HP, many cars, **** most cars make FARRRRR more then 300hp with 42lb injectors...the combination of our semi-efficient head flow, high-ish RPMs, plus a large amount of boost put the strain on them.

60's are my clear cut choice, most people who bitch about them don't take the time to tune offsets and voltage drops correctly so there idles go to ****.

 

All depends on what you want your AFR to be at during a WOT run. 42# will get you into the low 12/high 11's. If you feel like you need to getting a lower AFR get a bigger injectors.

Given the choice between 60 and 42 I would do 42. If you can get 50's that would be a perfect size to try.

 

3" - 42lbers
2.9 - Below - 60lbers

Spend the money and be safe.

 

Just finding someone to dyno tune it that you trust thats going to do a good job around my local area is my problem. Im going to have a friend tune it for time being till i can get on a dyno when i do my stage kit

 

60lbs are the way to go!

 

06black tuned my car, i have 2.8 with the 60s and it runs awesome, no problems at all.

 

There is about a 20 dollar difference between them, I don't think it's a money issue.

 

Yeah i'm trying to make some performance upgrades now. I have TTR trans bushings and engine mount coming in soon. now I want some speed(but safe). I was thinking of just getting 42lbers, stage II belt, 2.8pulley-(and having a good tune[central Fl])! but then I read on the internet that if you get a 2.8 pulley you will need a tensioner and new spark plugs. Is this safe to get without the $100 tensioner?

 

The new plugs will be about 8 dollars from your local auto store...assuming you go with the NGK's, which are the most highly recommended. Screw the 100 dollar tensioner, you can get a 20 dollar idler pulley that works just as well. Or you can spend $40 on a stage 2 belt. Regardless you need something with a 2.8 pulley or your belt will slip like crazy.

 

The 60's are nice to have for future upgrade potential, as well as being able to throw a little more timing in there when tuning, but they are not necessary if you are getting a good tune.

 

It depends mainly of how much boost you run, hence the differential pressure going through the injectors. For 16+ PSI in the manifold, 42# can flow a bit not enough for the last RPM's, specially if you go past 6500 RPM.