Running 8 On 4
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
Sure you can. There is a solenoid that adds clearance in the valve train so the cam can't open the valves.
And you don't need to shut off the coils. Let it fire a spark in a cylinder with no fuel. Nothing bad happens. These systems don't shut off the coils, just the fuel, and deactivate the valves.
And you don't need to shut off the coils. Let it fire a spark in a cylinder with no fuel. Nothing bad happens. These systems don't shut off the coils, just the fuel, and deactivate the valves.
Because, you are right, you should just let them fire in there, if there are any gases, or anything, it will just burn them up, but there would never be enough to cause any problems.
Just sounds like its more of a thing to get people to buy vehicles then anything.
I rode in one, you could never tell it switched back and fourth between them, its pretty cool.
But, he said he never noticed any difference in fuel mileage.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,739
Likes: 2,669
From: SE Florida
The point of individual coils is to delete the distributor and the high voltage wires. They cause a lot of maintenance problems.
Look at the Ford modular engines. They have had coil on plug for 16 years and never had cylinder deactivation. Obviously the COP isn't there to be able to disable cylinders.
He never noticed any fuel economy improvement compared to what? How would he know what it would do without the deactivation?
Look at the Ford modular engines. They have had coil on plug for 16 years and never had cylinder deactivation. Obviously the COP isn't there to be able to disable cylinders.
He never noticed any fuel economy improvement compared to what? How would he know what it would do without the deactivation?
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
Oh, gotcha. no more wire and stuff, just computer controlled ignition.
Even though that makes it way more expensive.
*shrugs*
Seems like there would still be quite a bit of wire mess to run all of that anyways.
Anytime I've seen them disassembled on TV, it didn't look to fun.
Even though that makes it way more expensive.
*shrugs*
Seems like there would still be quite a bit of wire mess to run all of that anyways.
Anytime I've seen them disassembled on TV, it didn't look to fun.
Postmaster
Joined: Jan 2004
Posts: 3,207
Likes: 0
From: Kearney, Nebr
This technology is decades old. I present to you the 1976 IH 1568 V8 tractor that cut down the 4 cylinder when not under load. The engine was rated for 150 HP. Check it out, pretty cool unit and it sounded amazing.
Not sure how it was accomplished but there were doing this 30 years ago on common rail systems.
Not sure how it was accomplished but there were doing this 30 years ago on common rail systems.
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
Yea, and all them V8 tractors were not the greatest though.
If you find a farmer with them, its a conversational piece.
Guy here by me has one in midland.
it just sits there.
From what I've heard and my experience anyways.
It was actually a car motor they put on them and made it work for a tractor from what I was told. That's why it didn't do so good.
If you find a farmer with them, its a conversational piece.
Guy here by me has one in midland.
it just sits there.
From what I've heard and my experience anyways.
It was actually a car motor they put on them and made it work for a tractor from what I was told. That's why it didn't do so good.
Postmaster
Joined: Jan 2004
Posts: 3,207
Likes: 0
From: Kearney, Nebr
Yea, and all them V8 tractors were not the greatest though.
If you find a farmer with them, its a conversational piece.
Guy here by me has one in midland.
it just sits there.
From what I've heard and my experience anyways.
It was actually a car motor they put on them and made it work for a tractor from what I was told. That's why it didn't do so good.
If you find a farmer with them, its a conversational piece.
Guy here by me has one in midland.
it just sits there.
From what I've heard and my experience anyways.
It was actually a car motor they put on them and made it work for a tractor from what I was told. That's why it didn't do so good.
They were definitely not the best choice back then, but the technology was interesting.
Postmaster
Joined: Jan 2004
Posts: 3,207
Likes: 0
From: Kearney, Nebr
I think a lot of guys ended up putting a cummins conversion in them. I think they were just a little ahead of their time. Kind of funny, looking back I can say that about a lot things.
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
Posting Guru
Joined: Nov 2000
Posts: 1,005
Likes: 1
From: Cincinnati, Ohio
Fried valve cover gasket and under valve cover harness took out the right bank of my 95 several years ago while I was in Chicago on business. The truck would not get over 30 or so MPH and took a while to get there. When you just shut off power to the injectors you have a 3.65 liter diesel driving a 3.65 liter air compressor and trying to drive your truck.
Dave / Believer45
Dave / Believer45
Thread
Thread Starter
Forum
Replies
Last Post