Decapping stock LS truck injectors
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- Опубліковано 4 жов 2024
- this is something new to me but has been talked about alot recently on the sloppy public page and has been used with success forever with subaru guys and others. i show how to decap the stock injectors and i will be sending mine out to get flowed and tested for fun to test how this works out, then install them in a vehicle and tune with them to see how far they'll go, since these are nearly free and will support a good amount of power at 60-80lbs reported flow
*UPDATE RESULTS VIDEO*
• stock truck uncapped i...
Shoot, I may never build an LS, but the homebrewed engineering and problem solving like this is why I follow the channel. That, and wicked Fairmonts...
Holy crap this was 7 years ago now!?!
Man time flies when your making horsepower.
amazing what uncapped stock injectors sell for. Thanks for filming this, Matt. Another Sloppy victory.
Been waiting for this to be put to rest, cant wait for the results :D
pretty cool can't wait for the results this will save me some money on the next build keep up the good work hope to see you soon
they have been flowed and they are on their way back, very good results
I'm sure it's already been said, but the MCM guys flow tested their decapped injectors with a measuring cup to just get a rough idea. Be neat to see a rough home measurement compared to a "professional" measurement as well.
yep i saw that, im sending them out for a static and dynamic flow test
Pure brilliance! Excited to see more results and to possibly follow suit on this!
For your top 25 questions, here are a couple I'll throw in the hat:
1) how uniform were the flows between them (pre and post cleaning, if the guy measured them before)
2) Where do you suggest to send a set for similar cleaning and flow testing?
I hope Marty and Moog see this!
Keep the vids coming. Thumps up!
This is very interesting, I'm anxious to see the results of the flow testing.
I have two sets of them orange handled harbor freight picks they are handy AF.
I decapped a couple injectors from my '97 explorer 5.0 (bosch 0 280 155 710) and tried to flow test them with the injector pulser in the microsquirt.
Without the plate with the holes in it they didn't buzz or flow any more. Dunno what's up with that, did a few of them to try and get one to work but none of them would work.
try and get them to buzz before you spend money sending them out
I did this with some light blue Subaru 440cc injectors. It supposedly makes the 440's flow the equivalent of a 740cc with the cap removed. I used a Dremel with a cut off wheel. You have to be really precise. I ruined the first one, oops, but luckily had spares. If I do it again, I might try the carbide bit method instead.
yeah from the subaru end it seems like you get like 80% more injectors we will know for sure next week
Subaru people have been turning 420cc injectors into 825's like this for years. I've been running uncapped injectors in my Wrx for the past 70k miles.
its practically the only thing Subaru people do right!
True. Goddamn nerds.
What are the thoughts on decapping 2001 LS1 injectors
Have you tried removing the MAF and the o2 sensors? Now THAT will give you more fuel. Just be sure to feather the throttle so it doesn't stall on you. and forget about fuel economy. But at least with decapping you dont have to worry about the stalling issue.
I'd rather remove the MAF and front o2s because they can always be plugged back in.
not really sure if you are trying to be clever with a joke or just sound like someone who wants to think they know what they are talking about, until they open their mouth in front of people that do know what they are talking about...
Hey guys, does this affect in any way fuel consumption for a daily driver? Thanks
You the man sloppy! .... to bad i already bought 80s! I bet tuning will be a breeze just got to change flow rate since that's a stock injector. BTW your tune helped my 5.3 procharged fireturd. Keep it up we wont have to buy any motor parts
Is it simply possible that most injector manufacturers just make a couple of injectors and change the caps during final assembly to get a bigger range of flow ratings?
Who knows lol
That's what I'm thinking. Same way I bridged the L2 cache on my AMD3000+ back in the day to unlock the multiplier. They set the multiplier at the factory to get the speed and once it's unlocked you can change the speed up to the top of the range in that class of processor. And I think you could do the same on a Pentium using just a pencil to draw a lead between two contacts.
Could be the same injector for the 6.0's and 5.3 just different outputs
yep thats actually exactly what they do at gm. the only things they change is coils and caps between most bodies
bingo
Would it be a bad idea to use an air sander with say 180 grit sandpaper to sand the edges off nice and even? BTW thanks for all the content man, I’ve been going through all your old content trying to catch up!
Damn I want to try this now lol.great video!
I've got the same soldering iron!
does this work on all injectors? I look forward to all your videos,, can't say thank you enough!!
only if they have the restrictive caps
Why are the 2 ports harder to do
Has someone tryed just boring out the 2 little holes abit bigger on the Cap? More horsepower?
it would be too easy to damage the pintle/plunger at the end, taking the cap off is absolutely the best way
awesome video. was wondering if anyone knows the name of that handtool dremel in the video?
How much flow did you get out the decap
75lbs
@@SloppyMechanics good deal I think I’ll do that before I spend money I don’t have, love you content. Been watch so I can setup my terminator x max with gt45 turbo for first start. If you have any advice or video that would help post the link in a reply. Thanks and keep bring us the real info
Interesting. So in theory I could get a set of 80# and decap them and make 1000hp on e85 on the cheap. That's what I'm talking about, can't wait to see your results.
The 80's don't have caps
Nice 🙂
Could you just take a jewelers drill and carefully open up the hole in the cap to the desired size? After all that's what they use to do to carburetor jets was to drill them to size.
i doubt it, i think its a hair away from the pin, so by the time you enlarge that opening you are already nicking up the pin
has anyone done lsa/ls9 injectors?
can u only do trunk injecter? i have. ar set up. with a 28 pound vette injecter.
I've ended up buying some ev6 injectors going by you wiki page as you say either ev1 or ev6 but have now found I have multec 2 plugs so can I just buy ev6 connectors and wire them to harness?
what about removing the inlet screens as well? I've seen some of the "big name" injectors with no screens. i would imagine this increases flow as well.(especially with a high mileage injector) maybe you could send them out to be flow tested to varify? its pretty cheap.
How do you do that??
+MyLonewolf25 not sure, never tried. maybe a spiral broken bolt extractor?
I already got a set of flex fuel ones.
How can anyone tell the cc of an injector ? i'm new about that type of info.
+Sergio Ramses if you have no information on it you have to send it to somebody with the flow bench and they can flow it and measure how much and what size it is
You could use mega squirt in test mode to test their flow couldnt you? Just make up a fuel rail for 1 inj and have the injector squirt into a measured container for a set amount of time
eh, i could but people could argue home testing vs a pro bench with static and dynamic tests
+Sloppy Mechanics i can see that.. but it would get you pretty close anyway and it doesn't cost anything other than buying a $8 plastic graduated cylinder.. im not sure what it costs to have inj flowed by a pro but its an option anyway to save a few bucks
+Set On Kill it's like 50-75$ it won't kill me, please also have about 92,000 miles on them and he will clean them in that cost also
+Sloppy Mechanics ok well ill keep an eye out for results.. may try this on the zephyr
where is the new video for the injectors? waiting
well buddy, as i explained, he was out on work this whole week, when i uploaded the video, i sent them out thursday, and monday morning he started working on them, doing all the data and flows, and then video taping and taking pictures of everything and triple checking, before and after cleanings and at many different fuel pressures... he is sending them back today so a video should be out hopefully by the end of this week. so if there is no video by the 21st ill send you a refund.
Lol. Ok. I just really want to see those in action.
nice
What should they flow and is it a good idea
Totally off topic but I noticed you got a little video inception going on with your camera to the phone, to the phone in the phone's video etc.
Yep like I said in the video I wanted to make sure I was getting it in the shot and clear
I think you did good man.
flow tested the injectors yet? im like a kid on christmas over here waiting for updates lol
yes they are 55~lb at 43psi and 72lb @ 58psi they are on the way back to me with all the data and videos and photos and i will make a video compile all of that info and probably a 10 minute long disclaimer going over what i think will be the same 25 questions in a row for every one of these videos uploaded HAH
Fuck that's bot bad at all lol thanks for answering one of the 25 questions early for me XD
They get heavier without the caps?
The caps are made of anti-matter.
the caps restrict flow, removing them roughly doubles the size of the injector i am told
+Sloppy Mechanics will be interesting to see what they flow
About what size are those injectors out of Jaime's truck? Think they'd be much larger than a 2001 5.3 injector? I was just wondering the other day why no one does this with stock LS injectors, and if it would be worth just de-capping some old stockers i have laying around.
the stock tune says they are roughly 32lb at 5bar, 58psi
Wow, that's a lot more than I would have guessed. Excited to see what they do uncapped!
its from a 07 truck the stock 99-03 are like 25-28?
So I imagine I'd still probably see a good gain in flow uncapping some 99-03s. Thanks for the info as always!
what injector data did you use in HPT? i just did this tonight. and trying to figure out what to start off with... gonna try and get them flow tested so i know. but just incase i cant. thanks.
well, since they are stock, you would use stock data, you would just have to change your flow amount or scale your meter/ve etc
In for results... know if the 36lb flex fuel injectors are capped by chance?
the injector i had that i sent in flowed 43lb@43psi i will have to check the part number on it but i believed that to be one of the largest stock injectors that i have out of a chevy truck i think they are the 6.0 E85 injectors
That seems like a ton, was that de-capped or no? The flex fuel injector I have is a 12594512 rated at 36lb @ 58psi.
I did this to my truck it's stock it now doesn't run so for you guys wondering if you can do it to your stock truck don't do it lol way to much fuel or something I pulled the fuel pump fuse and it ran great put it back in and it drowns it out almost instantly.
Yes, you absolutely need to tune for 3x larger injector
So you're taking a precise fuel metering device and tearing the SHIT out of it? Nice!
ya gas mileage not needed... just high horse power bahahahaha
High horsepower means buying the correct injectors. Doing this will cause crappy spray patterns and low hp
what do you think company's lile injector Dynamics does they just put Match pairs together. if you watch the video of them walking through their facility you can actually see them grinding the tips off.... FYI
Who watching this video will match them afterwards? Not many....or any at all.
anyone building a bunch of Ls motors with a shitload of them send them all off matching together pretty easy.
sneaky
damn this sucks makes me regret throwing away an old 5.3 intake i had with tb/inj attached wtfff
did you get results yet?
ua-cam.com/video/zD90VWBigLI/v-deo.html
updated video description and added annotation in beginning with link
Shitbox brought me here
where's my refund?