My rockers have gauled a few times and I’ve cleaned them up with my dermal and with 300k+ miles they’re pretty clapped out . A few of them are not oiling to the tips properly also , did some research and found the replacement trunion / brass bushing combo which looked pretty nice still everything else on the stock rocker is worn , found this company PRW Industries that makes rockers for other makes and they have recasted their own rockers for the 24v and have the brass bushings. Bought a set and their real good quality and I can’t believe how much quieter my truck idles and runs , guess my stock rockers were a lot worse than I thought . Paid 551$ for the set and that’s a pretty good price if you ask me !
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Rocker arm option
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spooled05
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Stealth, Fellow Albertan with a quick question. are you running conventional or synthetic oil in your 5.9? just curious if that may affect the rocker arm wear that is showing up.
Diesel On
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15,521 Posts
It would be interesting to see how mine looks, motor has lived its life on synthetics, amsoil early on for a short time and royal purple there after. Next time i adjust valves i will pull one off for a look.
Some info found on the bronze bushings ...
Guide To Bronze Sleeve Bearings
Sleeve bearings have long been a stalwart of worldwide engineering, none more so than the bronze family of sleeve bearings, which often last for decades…
www.rightonblackburns.co.uk
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6,502 Posts
I don't think those Fleece OE replacement rockers are anything special. Just plain jane non-Cummins 6.7L rockers like many out there.
I do agree that coated, improved trunnions are superior but man, the Fleece coated trunnions are pricey (US$466).
Fleece | 1998.5-2018 Dodge Ram 5.9L / 6.7L Cummins Billet Rocker Arm T
Fleece Performance rocker arm trunion upgrade for the 24V Common Rail Cummins. Built from billet tool steel and super-finished to perfection, these trunions offer a revised series of oiling passages to insure adequate oil is held in the appropriate locations to prevent galling and material...
ddpmotorsports.com
The Manton coated trunnions, US$500.
Manton Heavy Duty Billet Tool Steel Rocker Arm Trunnion Set 98.5-23 Do
When upgrading your engine for added power, it is imperative to complement this additional power with stronger engine internals in order to avoid engine failure. One of the weak points in your Cummins are the factory trunnions.
www.dieselpowerproducts.com
Hamiliton coated trunnions, US$200).
24v DLC coated trunnions
Improve your 24 valve Cummins fulcrum performance with our DLC coated trunnions, offering enhanced durability and reduced friction under load.
hamiltoncams.com
Usually what's on sale!
Mostly Rotella T4 conventional 15W-40 for the entire time since I bought it new. Never any additives.
120,000 miles, most of it towing our 10k lbs 5th wheel all summer.
Never extended oil changes. Stiffer 95lb valve springs, stock cam, 50PSI peak boost for 10+ years.
Much different history than Steve's 500, 000mile truck, much different than AlCharger's 250,000 mile truck.
As I mentioned earlier, the 2003-07 5.9L rockers are a poor design from lack of oil flow to the trunnions.
I don't think synthetic oil or additives will help the galling issue.
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2,267 Posts
At your mileage be prepared for the end cap to fall off when removing.It would be interesting to see how mine looks, motor has lived ts life on synthetics, amsoil early on for a short time and royal purple there after. Next time i adjust valves i will pull one off for a look.
Some info found on the bronze bushings ...
Guide To Bronze Sleeve Bearings
Sleeve bearings have long been a stalwart of worldwide engineering, none more so than the bronze family of sleeve bearings, which often last for decades…
It's not if but how much they have galled at 500k.
You might get a bump in FE as well. My CTD runs quieter and smoother since changing.
The fleece trunnions are made by Trend Performance. 24 V high performance rocker arms with studs – Hamilton Cams
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6,502 Posts
What engine oil, type and viscosity, have you been running in your truck over the years? Any additives?
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15,521 Posts
Well if the end cap is going to fall off then new ones should he in hand for a swap.
Mine were galled, not to bad, with only 65,000 miles. And I was changing oil every 5000 KM or 3106 miles. Valvoline Premium Blue 15W40 Motor Oil. K&N Wrench-Off Oil Filter. No additives. For my new engine build, I have Driven Racing Oil DBR Conventional 15W-40 Diesel Break-In Oil. And a Wix 57620 Oil Filter. After break in, all switch to Driven Racing Oil Semi-Synthetic DR40 15W-40 Turbo Diesel Motor Oil or Shell Rotella T6 15W-40 Synthetic Heavy Duty Diesel Engine Oil, this is easier to get. And a Wix 57620XP Oil Filter. Shouldn't need any additives?
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2,267 Posts
I have not been consistant on the brand, Rotela 15 40 syn most often. I'm consistant on changing oil and filter every 10k.
Started Stiction Eliminator 18k ago. It's on its second treatment. Next treatment 32k from now.
I believe SE may help prevent oil sludge in the small holes in the lifters. I stuck a wire in the small passages and pushed oil out. This was after soaking the parts on gas....
X2, might as well swap them in and enjoy the FE and quieter, smoother running CTD.
When I lifted the oem lifters, 2 caps feel off. When cleaning them up for inspection, 3 more were in the box...
The fleece rocker arms, will work for me. $856.75CND for 6. They have the metal caps, and use my Manton trunnions.
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6,502 Posts
Lol, great minds think alike! That would be a great combo.
I've been looking at my new 6.7L Cummins rockers and been thinking that adding upgraded and coated trunnions to the new rockers would be a good and cost effective way to go.
This would be identical to your Fleece rockers and Manton trunnions combo and would be identical to the Hamilton cams rocker arm kit.
So where are we at:
- PRW rockers (back ordered), bronze bushings. US$550. I still like these.
- OEM Cummins 6.7L rockers, uncoated trunnions. US$480 on sale. Really good value. Really all I need.
- Hamilton rocker arm kit. DLC coated trunnions and studs. US$900.
- OEM Cummins 6.7L rockers on sale (US$480) plus the Hamilton DLC trunnions US$200 = US$680.
-OEM Cummins 6.7L rockers on sale (US$480) plus the PRW bronze bushing trunnion kit (US$112) = US$592.
Where are you finding the OEM Cummins 6.7L rockers on sale (US$480)
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6,502 Posts
I think Alcharger posted the link to www.shopCummins.com a few weeks ago, that showed the 6.7L rockers on sale.
They were on sale for US$82each, CAD$116 each. That's what he and others ordered.
I ordered them eariler this week. They were overnited to my local Cummins shop, free shipping.
It is a really good deal for OEM 6.7L Cummins rockers. The regular price was CAD$186 each.
Darn, the shopCummins website is down at the moment...
I ordered a Firepunk engine lifting bracket. $80.00 US, $52.11 US via UPS Standard, total $132.11 US, total in CND $185.71 Then UPS added a $50.20 CND Brokerage Fee. It ended up costing me $235.91 CND.
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6,502 Posts
I think you stated that you live in or near Wasa, B.C. It is beautiful there by the way!
Have you ever heard of www.montanashipping.com?
They have 2 stores/warehouses in Montana. 1 in Sweetgrass which most Albertans use and 1 in Eureka, just over the border south of Roosville, just south of Fernie. About 1.5Hrs from Wasa.
You can ship items cheaply to their warehouse, they charge very little to accept your package.
You go pick it up and just pay GST at the border, no duty on US items.
Officially there is duty on non-US manufactured products but they rarely check.
You will need a Passport to get across the border.
To make it worthwhile, you have to order and pick up several things at once.
It's been years since I used them at Sweetgrass or Eureka thanks to the low Canadian dollar and I mostly shop on Amazon Canada now.
Worth looking into.
I don't order to many parts from the USA, some parts that are not sold in Canada, I will order. I can't cross the border into the USA. I'll end up in jail.
I order a lot from RockAuto and never had to pay Brokerage Fees. They use Fedex for shipping. UPS is a ripoff shipping company, when it comes to shipping to Canada.
Rob just e-mail me about testing my injectors. All out of spec. he they were new, flowed 40%
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6,502 Posts
The www.shopcummins.com website is sorta back up and running.
It looks like they made changes or upgrades to it.
Many of the previous links posted in this thread no longer work.
For the 6.7L Cummins rockers, search on p/n 4995602. Watch the US/Canada pricing toggle on the top right of the page.
The good news is that the rockers still show on sale for US$81.44, Cdn$115.65 each pair.
It looks like they made changes or upgrades to it.
Many of the previous links posted in this thread no longer work.
For the 6.7L Cummins rockers, search on p/n 4995602. Watch the US/Canada pricing toggle on the top right of the page.
The good news is that the rockers still show on sale for US$81.44, Cdn$115.65 each pair.
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