LTX

Looks like i have a leaky injector #4. Please recommend an exact link, source and part number of the stock 24lb injectors. Be as specific as you can. I hear it’s a pain in the *** to get replacements to work (too many Chinese with wrong lbs requiring new tunes). I want something i can just throw in and start up for now.

thanks gentlemen,
Aaron

SS RRR

iTrader: (2)

Ship your originals to a fuel injector shop that will inspect/repair/replace parts as necessary. One like this:

https://www.mrinjectorparts.com/

LTX

Going to be sending off my injectors to be rebuilt eventually (my only running car) but replaced 1 injector with a “Standard FJ164” and noticed it runs rougher and idle is not as smooth as before. All the other injectors are factory. And noticed knocking/pinging when throttling it quickly to accelerate. Your thoughts?

SS RRR

iTrader: (2)

I can’t find any information regarding flow rate or impedance for that part number. I did see something on the O’Reily website saying they were 28# injectors.

NM93LT1Bird

https://www.ebay.com/itm/33362333661...m=333623336610


The latency times for these are available, all GEN 3 bosch have very similar latencies even at rising pressures to 5-6 bar rail.

These are 260cc @ 3bar aka 24lb.

12 hole, 50 micron droplet size. 4 hole = 90 micron. WAY WAY WAY more efficient combustion events, and when the super atomized fuel hits that hot intake valve -- magic.


Dump the stock unless you need it for some racing class that requires all stock.

Biebs

93LT1bird good info on your other post:

https://ls1tech.com/forums/lt1-lt4-m...96-intake.html

NM93LT1Bird

Thanks bro. New here trying to come out strong. I bring the 1.8l 4 cylinder 600-800whp skills and Audi/VW/BMW/Porsche tech experience.

I'm looking at the LT1 from as many new angles as I can after loads of research.

LTX

these have a different plug fitting

NM93LT1Bird

Yes. There are pigtails all over amazon, and short adapters that convert the USCAR EV6/ev14 connector to the original EV1 bosch style connector the factory injectors used.

That should get you what you need. Believe me, any injector you run worth a pile of crap in the future will not use the original connector at all.

LTX

Will consider these 12 hole injectors and does anyone else have any suggestions on 24lb injectors like the fords or the SVO’s? Links and resources would be awesome. So many different styles and descriptions it’s difficult to find a resource I trust.

NM93LT1Bird

You will not find anything to atomize fuel finer currently unless you go with Bosch motorsport 16 hole 55lb @ 3bar rail pressure injectors.


The other options you speak of, they just plain suck ***. They barely atomize, and there are carbs that do a better job than our original injectors and the fat body SVO injectors.

Ford racing sells a 24lb 4 hole injector like the ones I show above, but it sucks compared to the 12 hole. The finer the mist, the more it mixes with the air and the better the suck squish boom goes. It is not just emissions that benefit from having a 12 hole finely atomized fuel mist. Power drivability and more power.

LTX

You should be in sales but I do agree that the more fuel atomizes the more efficient the combustion process is hence the power is made however I’m still going to consider them and weigh out my options. Until then put the injectors you mentioned on your car and have them running and post results.

Can anyone confirm if these are the real OG SVO’s and not some knockoff Chinese ones?

https://www.ebay.com/itm/16671794272...mis&media=COPY

NM93LT1Bird

I hate Sales and sales folk lol.

I'm porting my 122538 intake manifold that has better injector angle before I solder the pigtails and put these in with the new manifold.

So the dead times are so close to factory flow close that I'm going to attempt to see how they are on a stock tune before I have the PCM calibrated for their dead times and 20cc more flow.

I'm banking on similar afr more complete combustion negating the slight rich factor.

My car is a 93 bank fire so its always going to **** on a closed valve somewhere. It's so close to a carb it almost doesn't matter.

Sequential is another game, you want proper values. As fsr as i know regarding these management systems. Im used to sequential complex german stuff with 3 intake valves. This is cake.

LTX

Bump still looking for someone to verify these as SVO’s 24lb. PN: F55E-A2E https://www.ebay.com/itm/16671794272...mis&media=COPY

kewe32187

I put these on my 97 Z28 three years ago when I had 2 bad multecs and they work perfectly and are stock specs. supposed to be a better spray pattern. They come in matched sets and the stock harness plugs right up. they have lots of videos on youtube. Worked for me in my stock 97 LT1

FIC Bosch III Stock Replacements for LT1

SS RRR

iTrader: (2)

I’m telling you, if the injectors you initially say are leaky it’d be to your greater advantage to just have those rebuilt instead of chancing it on mystery injectors.

HawkFanatic

iTrader: (1)

I have no personal experience with these, but am planning on swapping them in soon.

https://www.cspinjectors.com/product...laces-17095004

LTX

I ended up putting some oreilly auto part standard fuel injector only on number #4. I do plan on getting the originals rebuilt but after I swap in a good reputable set. It is my daily.

I saw these. Really leaning towards these. Did you notice any throttle blip response improvement? Having a weird delay since the oreilly injector.

any idea what the difference between the Bosch III & IV?

LTX

Ordered these injectors. Stoked but wondering about the retaining clips. If anyone else besides kewe have these injectors installed on stock fuel rails, feel free to let me know your experience so far.

thanks guys

HawkFanatic

iTrader: (1)

This is what I found:

The Bosch Gen 4 injectors have two primary benefits:
1. They maintain a finer atomization in the larger injectors (beyond 24 lbs); the Gen 3 and Gen 4 are essentially identical in the smaller injectors
2. They are way faster with shorter response times than the Gen 3s; this is particularly important when you get into the larger injectors that have had the holes enlarged (that reduces the response times) or when you're running @ more than 3 bar pressures as the increase in pressure further reduces the response times