Which turbo
Thread Starter
|
Cross-Country
Joined: Jun 2024
Posts: 55
Likes: 1
Which turbo
I need some opinions and guidance on which turbo I should drop in my 18’ 6.7. Currently has a big non vgt 70 mm spe emperor, I’m currently not impressed with the speed it spools while towing and daily driving, I am looking to go back to vgt, I’m thinking between kc whistler stage 3 and spe strike force stage 2, how much lag do these turbos have, will they be better than what I have now?
Cargo Master
Joined: May 2018
Posts: 2,442
Likes: 993
Will likely still be pretty laggy, are you running larger injectors?
Thread Starter
|
Cross-Country
Joined: Jun 2024
Posts: 55
Likes: 1
i thought that with the spe strike being vgt it would be significantly better than a non vgt
Cargo Master
Joined: May 2018
Posts: 2,442
Likes: 993
Looks like the spe turbo has a pretty large turbine wheel as well as compressor wheel. Even though it’s a vgt there’s a good chance it’s laggy and will have high egts towing. Unfortunately it looks like spe only offers s300 t4 turbos with the larger 80/73 turbine wheel. If they offered the s363 with the 76/68 turbine wheel it would be the best non vgt t4 turbo setup for the 6.7 imo. I’d look into a KC whistler stage 2, best mix of spool and flow to support more power.
5th Wheeling
Joined: Feb 2023
Posts: 38
Likes: 47
From: PNW
If you have the money I’d highly recommend as small of a turbo as you can for the valley, like a stage 1 VGT or even the factory turbo and a compound. I’m running a 76mm over the stock vgt on a 22 and it tows great like a stock truck but runs like hell when the 76 spools up.
Trending Topics
Hotshot
Joined: Jul 2013
Posts: 14,302
Likes: 2,197
methonal injection is what I would do. less expensive than swapping out turbos again and more air is not going to help ...existing piping for air is all exposed to heat ....you are not getting bang for the buck
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Trailering
Joined: Nov 2023
Posts: 15
Likes: 15
From: NW Montana
Cargo Master
Joined: May 2018
Posts: 2,442
Likes: 993
Would the water/meth provide enough power (for lack of better term) to spool up the turbo and keep it there for towing? I'm moderately familiar with the systems, and see you have one, but it seems to me that a turbo properly sized for it's purpose with water/meth would run much more efficiently.
Laughing Gas
Joined: Mar 2016
Posts: 1,086
Likes: 466
From: Tennessee
I learned diesel mechanicing from an old man, 70s when I worked with him and his general rule for towing was never to exceed the liter displacement of the engine in mm to turbo turbine. aka 6.7L diesel, don't go larger than 67mm for best towing capability. VGT obviously changes this dynamic but IMHO the basic principle stands.
Trailering
Joined: Nov 2023
Posts: 15
Likes: 15
From: NW Montana
OP did you settle on a new turbo? I'm in the same boat as you, and have have been searching for quite a while for someone that has experience with the options you mentioned (KC, SPE). It's tough to find any information that goes beyond the "make your truck sound like a 6.0" mentality. I see that Titan Turbo has many options to choose from as well, does anyone have experience with them?
I'm at 355k with the factory SST, so I think I've crossed the threshold into running on borrowed time. The turbo is showing signs of drawing oil past the bearings (burning a little, CAC tube/ compressor boots have oil seepage), and I'm starting to show reduced boost pressures as I drive. From what I've seen, the SPE Strike Stage II has a better shaft and a slightly larger tubine than the KC Warlock Stage II, at a slightly lower price.
I don't want to start a new thread that has essentially the same question, but would like some insight before I drop $3k on a turbo.
I'm at 355k with the factory SST, so I think I've crossed the threshold into running on borrowed time. The turbo is showing signs of drawing oil past the bearings (burning a little, CAC tube/ compressor boots have oil seepage), and I'm starting to show reduced boost pressures as I drive. From what I've seen, the SPE Strike Stage II has a better shaft and a slightly larger tubine than the KC Warlock Stage II, at a slightly lower price.
I don't want to start a new thread that has essentially the same question, but would like some insight before I drop $3k on a turbo.
Thread
Thread Starter
Forum
Replies
Last Post
02GrayPowerStroke
6.0L Power Stroke Diesel
2
Feb 17, 2010 02:06 PM