12v Cummins 60lb Valve Springs vs Conical | Parts Bin EP 19 | Power Driven Diesel

In episode 19 of The Parts Bin, we test 60LB valve springs vs. the new PDD 12v street and race conical valve springs. Watch to learn which valve spring is best for your 12v Cummins engine setup.
Pick up the best valve springs for your 12v Dodge Cummins at the links below:
60LB Springs: powerdrivendiesel.com/product...
PDD 12v Street Conical Springs: powerdrivendiesel.com/product...
12v Race Conical Springs: powerdrivendiesel.com/product...
Power Driven Diesel is a specialty performance shop engaged in the engineering and development of high performance turbo diesel technologies.
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[@chadhester265]

This is why I follow you and your team you guys aren’t just trying to make money but care about us the customers and ensuring that we are spending our money on the right stuff and I really appreciate the explanations of where we should spend our money when building a diesel keep up the good work!

[@smittysmith4828]

Love how you guys explain things, I remember a time when Hamilton was the only way to go if you wanted an upgrade. Now there's more choices! Appreciate the tid-bit explanation at the end, answered a question that popped in my head.

[@bcbloc02]

Also you have valve lash so there is another .010 and ,020" clearance you gain on the 60 lb springs. The triple spring setup I have on old yellow has over 100,000miles and I have had no issues with anything valvetrain but I have never turned it over 4800rpm.

[@Itsa_Mea]

Tony sporting the AvE hoodie. 👍🏻

[@Itsa_Mea]

🙊

[@InterestingEndeavors]

Great info! Enjoy watching the technical side of things too.

[@gafrers]

Passionate and easily explained. Great Job. Happy Holidays

[@idahobuckaroo8348]

Really appreciate the detail you include in your videos. Helpful & informative. Thanks!

[@BretMcHone]

I just wanted to let you all know I just recently stumbled across your videos and site. I am really impressed at the way you present usable and real world information vs. just vomiting out marketing material supplied by manufacturers. I am an analyst in computer systems and even watching the video on the failure analysis of your engine, motor oil additives, the exploding cummins, etc.. they were all incredibly informative. Not only about the application but methods and *WHY* you do certain things. I have only really recently started diving into full size truck engines and you all really do a great job of removing a lot of the mystery around much of it. Thank you!

[@mikestrucks]

Very interesting video Todd ! Thanks guys 👍🏻

[@JohnDoe-jl3em]

Definitely appreciate this one, thanks guys.

[@bdjm8595]

Another fantastic video, thanks guys !!!!

[@jimkillen1065]

Many years ago I went to IRD vibration school . The company sent me to it . Pretty interesting material. Thanks for the videos

[@markmcleod8365]

man oh man i love these guys im learning so much just watching these videos you guys are awesome keep up the amazing work

[@markmcleod8365]

ill be calling you soon to put together a package for my first gen !! @@pddofficial

[@wesleyrohr1577]

Great content Todd I learned a bunch from this vid thanks for sharing

[@andydave93]

Such an amazingly informative video

[@gofast8878]

I drive and tune a VAG diesel. But the info here is excellent. From valve springs to oli additif's Super info !!

[@greendodge98]

Damn Todd you seem so intelligent but I know the truth your just smart!!!! Great videos keep them coming and have a MERRY CHRISTMAS!!!!

[@thankfullife7968]

Appreciate the ongoing passion and dedication from you and your team Todd !!! Im guessing guys running higher revving/race type application would see a greater benefit VS the average daily driver ??

[@mdavidson101]

Commenting for increased interactions. Great informational video.

[@JPMotorhead1993]

Awesome information thanks for sharing 👍🏻

[@scooter1391]

well said there's so much you can do to control valves too. lighter push rod and retainer keepers rockers,valve them self, rocker ratio, lifters, there's just so much that can lighten your valve train springs are good start to this.

[@geraldjewell7241]

Great video would love to buy some parts from you guys in the near future!

[@j.j.sgarage1457]

Great Info! 👍🏽

[@slowaf12v]

Awesome info!!

[@caterpiller95]

I literally just ordered 60 over valve springs for my 12 valve and a 4 k gov spring

[@davidschmidt449]

Had I watched this video last winter I’d have been looking for better springs for my Dmax. Thanks for the information.

[@davidschmidt449]

PowerDrivenDiesel but your content is about engines and they all run with the same principles and have common issues. I like the way you present things.

[@colinlawrence2186]

One more awesome real world video back in the late 60 in England on modified motorcycles we would run dual valve springs and to lighten the valve train titanium valve caps And locker's but that's on high revving engines to eliminate valve float are titanium valve caps available stateside for the Cummins engine ?keep these real world series of videos coming and Merry Christmas to you all GOD BLESS YOU ALL AND STAY SAFE 🙋‍♂️🇬🇧

[@ms.karihart2983]

Once again you are awesome Thank you for you’re attention to detail Could this work on a 6.7 Cummins if not please explain btw it’s a daily driver

[@JC-gw3yo]

Great insight here men...

[@pddofficial]

Glad you think so!

[@kanakamaoli9642]

Good video

[@findthetrick]

i have a mercedes benz OM606 on the engine stand waiting for paint and a borg warner s300, if you dont know anything about them, theyre pretty sweet. It is basically a DOHC cummins. its a 3.0 L inline 6, 4 valve per cylinder with a bosch inline injection pump similar to the p7100 and 100% stock will rev to 5000. you can find some videos of people turning over 7 grand with them too (not stock of course)

[@hermanr2095]

Are there any differences between the hx35s on the 12 valves and the and the 24 valves? Thanks i appreciate how awesome you guys are at answering comments!

[@dixiemae5042]

Awesome info. 👍🏻👍🏻👊🏻💪🏻🇺🇸🇺🇸

[@jeffbeaird747]

Harmonics.... a killer over time

[@rickysparkman]

ty

[@burkey426]

How do the Hamilton HD Conical springs compare to the Street Conical version? Not sure which ones to purchase.

[@jaydunbar7538]

Don't need to get rid of pushrods, comp-cam did the valve train that had a LS over 11k rpms recently.

[@charlesdefrancisco5056]

Interesting treatise on the springs..however the latest spin tryon results claims that the pushrod weight means absolutely nothing....the weight alleges that it’s only important on the rocker arm after the fulcrum....for years our shop promoted 3/8 pushrods ..but as I said the spintron has shown that the pushrod needs to be the biggest diameter needed to control the stability of the valve train.....not trying to promote myself as a expert..but certainly a race engine enthusiast

[@jeffbeaird747]

Does a conical valve spring have a slightly less installed seat pressure.? Due to the smaller diameter or does that not matter

[@garycraig4277]

Is the spring retainer lighter also

[@johngz3413]

VW uses over head cam in their small and medium size diesels and they are still fairly RPM limited until you get past like 2006

[@chaseplugge3972]

There's something I can't quite wrap my head around and I'm hoping someone can help me out. Why do people prefer automatic transmissions for diesels? I figured that the biggest con of an automatic would be the power loss due to less contact because it doesn't have a clutch like a manual does. If automatics are as popular as I've been seeing why do most semi trucks have an Eaton manual? I know that if you don't have the proper clutch to handle the power that it'll slip super easy but doesn't the overall design of a manual seem to be more reliable to handle the power and provide a quicker response when you floor the pedal?

[@samearhiltz4480]

Why don’t you sell 24v Conical springs? Or at least I couldn’t find them

[@dledsdleds432]

Interesting video. As a side notice, did I understand right he's speaking of residence insted of resonance? I'm not a native speaker, so it would be nice to get it cleared. I always thought it hat to be resonance (linke in German). Thanks in advance!

[@jbaker8871]

Yes overhead cams add to rpm but horse power is just torque over time. No reason to push Diesel to extreme rpm’s. Crowder will build shaft rockers and light weight lifters. I spun a 600ci Chevy routinely past 9000 until someone explained average power. Their is a point of diminishing returns. I am curious why you don’t find roller cams in diesel motors but I imagine it is because it is not necessary as torque is so low.

[@pddofficial]

There are lots of roller cam 5 to 6k RPM Cummins race engines out there in the sled pulling and top levels of drag racing. They are found in custom deck-plated race engines and the billet aluminum engines. Honestly, many that tried a roller setup end up going back to a DLC coated Tool Steel flat tappet design when they experience a freak link failure or roller lifter failure. It doesn't seem like wickedly aggressive cam lobe design has near the benefit so reliability wins in the end.

[@scooter1391]

forgot to say at some rpm every engine come apart it's called centrifugal force

[@BLZArmwrestling]

Your tought on Mantom valve spring?

[@Dirtyol12valve]

Pump Belz manton makes some of the best valve train products out there. They’re an excellent choice for any engine but $$$$

[@BLZArmwrestling]

@@Dirtyol12valve Good iv just put Manton Spring and HD pushrod in my 6.7. Hamilton had couple spring failure latetly thats scares me and i went with manton instead

[@Mr.Beastforpresident]

Why not Beehive springs?

[@JGress]

Dual overhead cam Cummins.. that’d be crazy

[@jasontruman1215]

Jeremy Gress if anyone can build it these guys can

[@JGress]

I gotta respectfully argue that statement if anybody was to ever produce a DOHC cummins based engine it’d be D&J precision machine without a doubt the machining and engineering that would go into a project like that is what they do on the daily

[@jasontruman1215]

Jeremy Gress this is true but they would do it to a common rail. Still I want to see it, hotrodding like that is what motivates the factory stuff to be innovative. I mean really how much has the cummins platform changed? Not actually all that much.

[@ate0endrizzi]

They already make one. It's called a ISX15 CM870/CM871. I do understand what your saying, wishing there was a 5.9L DOHC.

[@JGress]

Let’s not get carried away, 6.8

[@daviddroescher]

Why dose Hamilton only say anything bigger than 188/220 needs fly cut saying nothing about valve springs? How bad did I mess up when I had industrial do my head, and Installed a Hamilton 188/220 with your 60# springs? 20k mi on rebuild.

[@daviddroescher]

What do I need to measure to check for damage? Street Bee hives are in short order.

[@lamarzimmermanmennonitefar5269]

Isn't the om606 an ohc?

[@MiG21aholic]

yes DOHC

[@1Builtcummins]

Whats is everyone's opinion on trend performance valves or push rods?

[@Mr.Beastforpresident]

Why all valve springs aren’t Conical? Seems like the best design bar none

[@pddofficial]

I would agree

[@grantkdavis]

Great video, but sorry, I'm NOT looking forward to a DOHC Cummins. I appreciate reliability and simplicity. Just my preference. To each his own.

[@pddofficial]

Thank you for the Comment

[@brandonm7824]

like for made in usa

[@lukeirmer5316]

Well shoot this is concerning.. I'm about to run one of your new heads with top hat seals, 60lbs and 188/220. Just got the motor back in haven't ran it yet. One thing i didn't notice you guys mentioned is vavle lash. Especially on the common .020 exhaust side. That would help in this situation. But unless heat expansion and oil take up reduces the interface clearance. Either way this doesn't sound like good news. Good way to destroy a new cam and what ever else.

[@lukeirmer5316]

@@pddofficial yeah i had you guys cut .030 into the piston, block hasn't been deck. Either way since this comment i have contacted you guys and are swapping my springs out for street conicals. Thank you for that. I did notice the valve springs being compressed ridiculously tight during assembly, but didn't think much of it. Cant wait to fire this beast up soon. He351cw/475 and a laundry list of your parts.

[@lukeirmer5316]

@@pddofficial matter of fact they should be at the house when get home from work😎