KC Turbos

KC Turbos Trusted turbos for Powerstroke, EcoBoost, Duramax, and Cummins. Daily Driven. Dyno Tested. Track Proven. Reliability, backed by top-tier support.
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Your go-to distributor for truck, diesel, & auto parts. KC Turbos specializes in Powerstroke performance parts. Email us for more detail on how we can help build you more power!

07/16/2026

Matt at Gearhead Sales let us use his modified 7.3 with a T4 turbo swap to see if we could do anything to get rid of that off the line turbo lag.
T4 swaps are an excellent and popular mod to do to 7.3's, but are they really the BEST option?

07/14/2026

Lapping valves is not rebuilding your heads. 😅
Jared at Kill Devil Diesel explains that lapping compound is a way to check valve contact and see where the valve is actually touching the seat.
It uses a very fine abrasive, which can help show the contact pattern, but it is not going to fix bad machining or replace missing material.
If the valve and seat are not shaped correctly, you cannot just grind them together and expect everything to seal. Like Jared said, you cannot seal valves by smashing mashed potatoes together.
The contact pattern tells the story. If it is not sealing all the way around, that head has a
problem.
Have you ever seen someone try to “fix” valve sealing with lapping compound?

07/13/2026

Sometimes your day off can involve more work than your scheduled day on

07/12/2026

Once you own and drive a diesel truck, it's hard to go back.

07/11/2026

Cameron from KC Turbos talks about the new 2020+ Jetfire turbo from KC Turbos. We have been working for SIX YEARS on this turbo. Designing, Testing, Redesigning, More Testing, Redesigning even more... and we are very impressed with the final results. This turbo offers faster spool up, stronger midrange torque, and MORE top end power.
If you’re searching for a 2020 6.7 upgraded turbo that works for daily driving, towing, and performance use, the KC 2020 Jetfire delivers balanced gains across the powerband.
Check it out on our website: https://kcturbos.com/products/kc-turbo-6-7-powerstroke-2020

07/10/2026

How do I explain to the insurance company I have a 2003 truck with 05+ buckets and coils, 6.4 mirrors & tailgate, full interior from a King Ranch, a center console from a different truck, a 2008 front end swap, a 6.7 starter, etc..
What mods have you borrowed from another truck?

07/09/2026

O-ring protrusion has to be right or it does not matter.
📏
Jared breaks down why there is a sweet spot when it comes to O-ringed 6.0 Powerstroke
heads.
Too much protrusion can cut into the gasket. Too little protrusion is not going to do its job.
KDD runs theirs right around .008"
, with every head leaving Kill Devil Diesel between .007" and009" More importantly, they keep each head pair and each end of the head within about .001"
That is roughly the width of a human hair, and it is the kind of detail that matters when you are
trying to keep cylinder pressure sealed.
Watch the full video on the KC Turbos YouTube channel to see the full comparison and
breakdown!

07/07/2026

Valve seat tolerance matters more than most people realize.
📏
Jared explains that one of the big differences with KDD heads is how tight they keep the valve
seat machining.
KDD only allows about .0005" of out-of-round tolerance on their valve seats. A lot of other
aftermarket heads can be closer to .002" or .003"
, which is a much bigger window when you are
talking about something that needs to seal metal to metal.
That tighter tolerance helps create a more consistent valve seal, better quality control, and a
better finished product leaving their doors.
KDD also uses bonded valve stem seals instead of the crimped style seals like the factory
setup. Instead of relying on a cheap ring to hold everything together, the seal is fused into one
piece so it cannot separate.
At high boost and back pressure, that matters. You need a seal that can actually withstand the
pressure instead of blowing off when the engine is working hard.
Who is running KDD heads?! 👀

07/06/2026

Sometimes you just have to trust the process 😂

07/05/2026

Lapping can lie to you if you do it wrong…
Jared explains that when you are checking valve contact, the amount of compound matters
more than most people think.
Too much compound can make it look like the valve is sealing better than it actually is. Too little,
or doing the test wrong, can also give you a bad read.
That is why the process matters. You are not trying to “fix” the valve seat with lapping
compound. You are trying to see where the valve is actually making contact.
Cameron and Jared put the eBay heads to the test, and once they started checking the contact
pattern, it became pretty clear that these heads were not everything they were cracked up to be.

Address

1255 S. Pasedena
Mesa, AZ
85210

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+14806887160

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