HOW TO SIZE CUMMINS INJECTORS

hopefully a helpful guide to sizing Cummins common rail injectors!

[@hey_youtubeim_back2159]

Where can I contact you to order parts? I need a set of injectors, lines and nozzles.

[@lilredsled]

Love these videos. Thanks for sharing your knowledge and experience

[@jimschaffroth5652]

I was thinking about BBI's..any good?

[@horsetorquesdiesel]

Haven’t heard any bad reviews but I haven’t ran them

[@bigdaddyrichie88]

my question is what's is good for a stock truck new turbo but stock with wicked wheel an very mild built trans

[@JacobJaime-i7i]

FJB N U

[@bongzonthebeat]

I remember when i bought 45% overs and the clutch left the chat 😆🤘🏼

[@grant_6.7_5th_gen]

Great video Josh!! Love the info. I'm about to pull the trigger on some DDP 150% for my 5th gen and have been on the Fence about getting a 12mil or just adding a cp3 to my cp3 conversion. You have any insight on that? Also how with trying to save some coin who would the truck drive if I did 100 or 150% injectors on my cp3 conversion. Just normal driving not beating her? Thank u for the content.

[@horsetorquesdiesel]

I would just do a single 12mm less to go wrong!

[@grant_6.7_5th_gen]

@Horsetorques Diesel you think I can run the 100% for daily driving b4 I upgrade the pump? Would it hold rail pressure? Or do pump first or just wait till I have the coin do do them at the same time. Thanks for you advice man it's highly respected brotha!!

[@Darrellsrelm]

Can you speak to second GEN owners about setting up a tow rig? This is a subject that is not understood or talked about much, but there is a lot of interest still in second GEN’s. Turbo size and injector size. Thanks.

[@bcbloc02]

If you are talking max towing then twins and 5x.012 or 5x.014 will be about it and you won't be able to use really anything over 400hp. The cooling system can't stand it.

[@Balakay9435]

Hell Yeah Brother 🇺🇸🦅

[@jameshumbob8247]

Appreciate you not being like some others that hide information like from years past. Keep it up as always man. Hope your family and Dave's had a wonderful Christmas with your family's. If we dont hear from ya between now and the 1st, Happy New Year.

[@knotts24v91]

Someone needs to make a video like this for us vp44 guys

[@martin1234512345]

What injector would you recommend to max out a single 475 on a 5.9?

[@bcbloc02]

A 475 should do about 850rwhp so the size injector he said would do that would be good.

[@TheProchargedmopar]

Thanks for this breakdown. 👍💪

[@curtisd8206]

Great explanation. I was wondering if a 6.7 rail was really worth it like some people claim. Not happening at my level. Getting a 476 this winter to pair with my ddp 150s, should crack 1000 pretty easily. Up in maple syrup land so gonna hit up Armor for some dyno tuning, and proceed to have fun

[@joshuaquilliam2887]

Whooh buddy Canada isn't maple syrup land, Vermont is my friend! Just messing with you, thought I needed to defend my state. I hope you have a 6.7 in that 5.9 truck I can't imagine trying to spool a 476 on a 5.9. Hello 3k stall speed and 5k rpm. Let us know how it works out. How do you like the ddp 150%? Those are my next injectors I think.

[@curtisd8206]

@Joshua Quilliam nope it's a stock bottom end 5.9. Turbine wheel and exhaust housing selection are pretty important, but talking to guys with similar setups, it should spoolfairly decently. 2500 rpm stall converter. Should work just fine. We are about to find out😁

[@curtisd8206]

@Joshua Quilliam love the ddp's, very clean running. Had a set of ddp 220% that one stuck open so sent them to dynomite to be rebuilt and went with 150 nozzles. The old injectors were about 7 years old, and the new ones run so much better and cleaner. Amazing what those guys are doing with improving technology

[@cole1407]

@@curtisd8206 You're gonna snap a rod pushing stock rods over 1000hp. I fully built my engine for 1000-1500hp and those stocks are tiny compared to waglers Street fighters meant for that range.

[@curtisd8206]

@@cole1407 big single turbo with high rpm power, tuning to keep the torque out of the low range. It will be fine

[@matthewallen644]

Going 467/83/1.0 on my 17 6.7. Looking to make around 700 eventually. Assuming a set of 60% and a 10mm pump would do the trick with good tuning?

[@nickolascarlson9645]

Love these videos!!!!!! Just what I needed to know

[@MGRDiesel]

Hey Bro. I have a problem with a As69rc going to neutral while driving with a code p0850 and p0868 do you think the problem could be Tcm or TRS. Is driving me crazy what is you experience in this trani

[@horsetorquesdiesel]

Is the truck tuned?

[@stevenpittman3676]

What’s your opinion on DAP injectors

[@brianpuff9021]

Awesome vid bud!!very informative, soon as I get my penny's together we ll talk soon!!

[@TheProchargedmopar]

Had to laugh. I deleted my grid heater and also PORTED my stock intake horn. 08 6.7. Figured if Josh runs it so can I. 😂 Truck is BONE STOCK except 5" turbo back, studded, and deleted. NOT turned up. hahaha. I expected nothing and got nothing except piece of mind the bolt won't break off and drop into the head.

[@bcbloc02]

Stock intake horn can flow way more than the intake valve can so while it is techically a restriction it won't make but very little difference in power because all you will gain is the easier flowing exhaust thru the turbine because the compressor isn't working against as much pressure. My guess is its like 1 or 2% at most.

[@jedpratte]

Good guide. i have a 04.5 CR we ran 150% overs in with a 12mm cp3 with s363 over s483 and it would do 900-1050hp depending on dyno and day. Little more cp3 and a larger high pressure turbo it would have done more for sure.

[@thebitefight2601]

How stretched out was that?

[@jedpratte]

@@thebitefight2601 What do you mean by stretched out?

[@thebitefight2601]

@@jedpratte injection micro seconds.

[@jedpratte]

@@thebitefight2601 I don’t recall it was tuned via smarty UDC tuning. Les at silver bullet did it. It was dropping rail pressure so it needed more cp3. My memory says it would drop 4,000 psi by end of the 1/4 mile.

[@thebitefight2601]

@@jedpratte my set up is very close to yours but I’m running a 464 with a 483 and 200% overs 178/208cam and dj head fully built lower and balanced just got a few other things to button up before it hits the dyno, I’m 45min from firepunk.

[@wyattbarry4786]

Thank you! Always learn a ton of new stuff off of videos like these! 👍

[@FastPaull]

As a European car guy, i've always been interested in diesels. I have a pretty good understanding of how they work etc, but i like how you break it down to where everyone can understand, at least when it comes to the Cummins. Can't be bothered with the V engines.

[@CHLIVESTOCK2020]

When is WOT’s Dyno getting delivered? Haha

[@barrymcaulkiner]

Thanks for the info. Very much to the point

[@EricC7676]

The next video, "to girdle or not to girdle"

[@rogerraines9773]

Example if I’m not necessarily chasing 800-1000whp but wanting to stay around the 600-650 mark and rev my 5.9 into 3500rpm+ would the Fleece CP3 CPK pump be more apt when also considering towing? When does a 10mm vs the modded stock cp3 become a necessity?

[@horsetorquesdiesel]

For 650 just go with a 10mm

[@tessastump]

👏👏

[@Jsdiesel1776]

Thanks for the video Josh. Will a 6.7 injector fit in a 5.9 CR?

[@stvnmllr]

Nope

[@joshuaquilliam2887]

@@stvnmllr Not necessarily true with that statement. It depends on the year head in my experience. I have a 2012 spare head here and my 5.9 injectors fit and click in the bore. I have heard of the early 6.7 heads not clicking in. There is also a few people on Cummins forum that are running 6.7 injectors on the 06-07 trucks with efi live. The idle is rough on first start but they claim it runs fine. I wouldn't do it, but some do.

[@horsetorquesdiesel]

Not without machine work

[@horsetorquesdiesel]

A 5.9 fits in either A 6.7 won’t fit into a true 5.9 head

[@Jsdiesel1776]

@@horsetorquesdiesel thank you sir!

[@WesternDiesel]

Would the 90hp injectors work decent with the evil fab 464 2nd gen swap ? With the stock cp3 for now

[@horsetorquesdiesel]

Yeah I would recommend a cp3 down the road

[@bdjm8595]

A lot a great info here Josh, thanks for taking the time to share your knowledge!

[@richardpotter5854]

500% or nothing. Stock cp3

[@jessicamcconnell5903]

Ddp website says 900rwhp on a 45% over, hopefully this is the case lol

[@andymike6575]

With compounds sure

[@chrishanlon6550]

I have a S&S CP3 no tune pump, what do you think it’s rated horsepower is? Looking back I wish I would have got the 10mm pump but was in a rush to get the cp4 out before it blew up.

[@chriswhite4024]

The 5.9 lines, updated #4. Can you elaborate what update this is?

[@horsetorquesdiesel]

They changed the isolator, instead of the bolt together style, it’s crimped on so the bolt can’t back out

[@mikestrucks]

Awesome video Josh ! Very informative as always 👍🏻

[@kaylaredling6307]

Kinda of a random question and maybe silly anyways I'm currently using my wife's KZbin at the moment because my phone is destroyed at this time and wanted to ask a quick question. What is the benefits of running 5.9 electronics on a 6.7? I see a lot of guys doing it and wanted to know exactly why. I currently have an 08 mega 6.7 and I've been wanting to build it just a bit. It's so cool that I just found out recently you moved to Abington VA I live just right outside Coeburn so I'm definitely looking forward to using you guys for future work.

[@shortbed70]

I am needing to do injectors in my 03 250 hp Cummins and wondering what your recommendations would be for stock cp3? I tow my 5th wheel camper 12k in texas but don’t do a lot of moving. I drive it twice a month and plan on doing an s300-63/64/12 turbo at some point.

[@horsetorquesdiesel]

30% overs is the biggest I’d recommend on a stock cp3. If you are happy with the power and want nothing more there is no issues with stock but a 30% can be used on your set up

[@abgaming8973]

So if I wanna make 500hp would 30% over be fine?

[@horsetorquesdiesel]

Yes!

[@loydproeber7404]

Currently deployed over in Poland and I'm saving up for a new transmission and injectors. I can't make calls over to the States, is there a way to be able to email you with questions? I'm stationed in Texas but I have so many questions about reliability for my daily driver. I'm really glad I found your KZbin

[@horsetorquesdiesel]

We are happy to answer questions as long as you are making your parts purchases with us!

[@jamierpm]

Happy new year and best of luck in the new year

[@stvnmllr]

What's a stock late model 5.9 injector generally flow MM3?

[@joshuaquilliam2887]

Around 120mm3 if I remember correctly.

[@jacobormsby9241]

I have a question about streetability. I have seen some articles about running larger injectors at a lower pulse width rather than running smaller injectors at a higher pulse. I have a mostly stock 08 6.7, its mostly a tow rig and its going to need injectors soon. should I go for a larger set, say 50% if all im going for in the long run is 650-700 hp?

[@BoostedVQUR]

Awesome video; thanks! - Real quick. DDP or BBI?

[@horsetorquesdiesel]

Ddp hands down!

[@BoostedVQUR]

@@horsetorquesdiesel Copy and appreciate the reply. 🍻 Considering going with DDP’s 25% overs. Truck has a S364.5/.91 Iron Horn kit. 124k miles (~10k on turbo kit) w/ no issues to date. - Do I need an upgraded CP3 and/or lift pump?.. 16’ 6.7

[@E67CHope]

Thanks for confirming my theory a Fleece performance stock cp3K pump with 25% over injectors is all I need for my daily 6.7

[@horsetorquesdiesel]

Anytimen

[@Gmurphy84]

Turbos……….

[@downandaroundgarage9868]

Thank you for the great information. I now feel way more comfortable putting 400 hp to the tire knowing the stuff. Keep on crushing it buddy.

[@tristenoberlender9685]

What is pop pressure?

[@markrich3271]

I liked it when we used to buy injector as a hole size. Seems like you know what your getting there.

[@bm9860sts]

Awesome video Josh 🇺🇲💪

[@j.c.316]

Great insight and solid details! I’ll have this info on standby for when injector time comes 👌🏼

[@baconcreek609]

Have a God blessed 2023 Josh!

[@lyndonhamby7432]

Good advice Josh 👍👍

[@gailyoung9911]

THANKS JOSH.

[@justinadickes4770]

Always awesome to hear clear and simple info that can be used right away, keep crushing

[@jaythacker5160]

Hey, another good discussion to have is throttle valves or no throttle valves in the rail. I didn't realize until recently but I've seen 2 rails, one outta 1100 hp 4th gen and another outta 1500 hp 3rd gen that had the throttle valves all variably displaced into the bore of the rail. I removed them and reused the rail. A stock rail has all the throttle valves installed to the same depth. These trucks weren't subjected to stupid rp, I know the tune on the 4th gen wasn't running more than 180mpa. On anything other than hot street truck, I'm gonna remove them. I wonder how many have popped out and either trashed a connector tube or worse? Have you seen anything bad from throttle valves?????

[@BoostedVQUR]

Doing studs (OptiTorque), springs and pushrods (PDD) as I recently installed BD’s Iron Horn kit on my 6.7 with the S364.5 w/ .91 and I’m hitting 54 psi. Anyway, while I’m in there, would you recommend I stay stock (120K) or go with a set of 15% or 25% Dynamites? No plans to upgrade further than that. Let me know your thoughts and as always, thanks dude! 🍻

[@SDP_5.9]

Tran then some fat injectors tuned down

[@karlwahlfield6462]

i always get a kick out of the stock intake on your 07, thats some serious power lol, have you ever compared the power with an aftermarket horn or side draft?

[@horsetorquesdiesel]

Side draft no, the horns yes, unfortunately when I worked at pdd I was strongly suggested to not release my findings 😂

[@karlwahlfield6462]

@@horsetorquesdiesel hahah understandable! that would be interesting to see. keep up the great work!

[@73cjproject]

Great content and knowledge as always. Glad you had a Merry Christmas with your family. Always appreciate your responses to messages and questions. I'm one of the guys who loves what you do with that stock intake horn! It will be funny to see one day what difference it may actually make to swap it. Thanks for always sharing your knowledge and experience.

[@oneslomax1664]

Great video Josh!

[@dillonmitri1670]

Killed it 🤙🏽

[@Kallaus_built]

I think itd be sweet to see a video of turbo set ups. Stock to towing to higher hp set ups. Another good video josh !

[@AbdoCaedo]

I second this. Breaking down wheel sizes, housing sizes, etc.

[@kennethbranscum2738]

Thank you, bro. Appreciate the info you put out.