Installing A Detroit 8v71 or 8v92 engine into a 2.5 ton or 5 ton M54A2

[MudTruckDaddy]

Hey everyone been looking at options and im wondering is the 8v71 or 8v92 series engine a drop in for military trucks. Will the stock 5 ton transmission hold up. There are plenty of HP mods and im not trying to go fast to be clear!!! But my idea is for a Gun Truck with Armour installment like in the Bug Out Vehicles like the MAB2 vehicle once sold to the public. Whats your thoughts guys. thanks

 

[porkysplace]

You might squeeze a 6v71 or a 6v53 in a deuce , I don't think there is any chance of a 8 cylinder fitting
or the front suspension liking it .

M35A2 + 6-71T Detroit Diesel 2 Stroker Marriage ???

So, I don't belong in the 2.5 forum because I only owned one for a week and had the chance to double my money on it, so I did. But it was a total riot, and I wanted more of it. With that, I went and bought an M925A2. But, upon doing so, I met a fellow enthusiast (WildChild467) that is fairly...

www.steelsoldiers.com

 

[MudTruckDaddy]

You might squeeze a 6v71 or a 6v53 in a deuce , I don't think there is any chance of a 8 cylinder fitting
or the front suspension liking it .

M35A2 + 6-71T Detroit Diesel 2 Stroker Marriage ???

So, I don't belong in the 2.5 forum because I only owned one for a week and had the chance to double my money on it, so I did. But it was a total riot, and I wanted more of it. With that, I went and bought an M925A2. But, upon doing so, I met a fellow enthusiast (WildChild467) that is fairly...

www.steelsoldiers.com

what about the 5 ton suspension.

 

[MudTruckDaddy]

Detroit 8v71 Engine Dimensions
The 8v71 Non-Turbo Engine is 47 inches in length, 39 inches in width, and 51 inches in height. It weighs a little higher than 2,300 lbs. On the other hand, the 8v71 Turbo Engine is 50 inches in length, 40 inches in width, and 53 inches in height.


6v71 Detroit
54 inches long
The engine's compression ratio is 18.7:1 with a 4.250 inch bore and a 5.00 inch stroke. The engine weighs 2,185 lb (991 kg) and is 54 inches long, 29 inches wide and 41 inches tall.

 

[MudTruckDaddy]

Detroit 8v71 Engine Dimensions
The 8v71 Non-Turbo Engine is 47 inches in length, 39 inches in width, and 51 inches in height. It weighs a little higher than 2,300 lbs. On the other hand, the 8v71 Turbo Engine is 50 inches in length, 40 inches in width, and 53 inches in height

Also to be clear Im not worried about hood clearance. I need to know transmission hold up and weight on front end.

 

[NDT]

V configured engines don't fit either chassis due to the steering gear being in line with the frame rails.

 

[davidb56]

Detroit 8v71 Engine Dimensions
The 8v71 Non-Turbo Engine is 47 inches in length, 39 inches in width, and 51 inches in height. It weighs a little higher than 2,300 lbs. On the other hand, the 8v71 Turbo Engine is 50 inches in length, 40 inches in width, and 53 inches in height.


6v71 Detroit
54 inches long
The engine's compression ratio is 18.7:1 with a 4.250 inch bore and a 5.00 inch stroke. The engine weighs 2,185 lb (991 kg) and is 54 inches long, 29 inches wide and 41 inches tall.

how can a engine with the same bore, but with 2 Less cylinders be longer.? OK I got it. 6V 71 is 41" L X 39"Wx 48"H. ..A dt466 would be my choice.

 

[porkysplace]

V configured engines don't fit either chassis due to the steering gear being in line with the frame rails.

Didn't the Candian deuces run 6v53's ?

Edit: A search found this :

 

[MudTruckDaddy]

how can a engine with the same bore, but with 2 Less cylinders be longer.? OK I got it. 6V 71 is 41" L X 39"Wx 48"H. ..A dt466 would be my choice.

The Dt 466 was going to be my next choice. would like to see 300 Hp out of one if possible. just dont see a build sheet on one. with a good bosch P pump

 

[87cr250r]

The people with the knowledge are all probably dead by now but it wasn't unheard of for truckers to get a reliable 500hp from an inline 6-71.

The 2-stroke is a very long engine due to the air box.

 

[rustystud]

The people with the knowledge are all probably dead by now but it wasn't unheard of for truckers to get a reliable 500hp from an inline 6-71.

The 2-stroke is a very long engine due to the air box.

I worked on the "screaming Jimmies" in the late 1970's at IHC trucks in Tukwilla, WA.
You could increase horsepower, but it took more than just a tweek here and there.
The "Marine" engines could make 485 HP . The "485HP TIB " built by "Johnson and Towers" used lower compression pistons, longer stroke cams, (usually using the 12 valve heads too) and large Turbochargers with intercooler and large injectors and bypassed the blower at higher RPM. That's where you get the TIB from. Turbo, Intercooler, Bypass.
They didn't last as long as the 250 to 300 HP models though. Truckers did put this engine in their rigs though. That is the "independent" truckers did. The fleets never pushed their engines past 300HP.
Also, these engines could never pass state emissions. They blew smoke and dripped oil like nothing you've ever seen ! That is why they were all replaced by the 1980's for Hiway use. You try and use this engine today and you would have the State Patrol coming at you like you were a "Dunkin Donut" !!!!

 

[87cr250r]

I actually built a pair of 6-71 engines that met US EPA Tier 2 emissions requirements. Basically, they ground all the lift off the cams and then added a turbo to bring the power back. It was similar to EGR but all done in cylinder.

 

[porkysplace]

I worked on the "screaming Jimmies" in the late 1970's at IHC trucks in Tukwilla, WA.
You could increase horsepower, but it took more than just a tweek here and there.
The "Marine" engines could make 485 HP . The "485HP TIB " built by "Johnson and Towers" used lower compression pistons, longer stroke cams, (usually using the 12 valve heads too) and large Turbochargers with intercooler and large injectors and bypassed the blower at higher RPM. That's where you get the TIB from. Turbo, Intercooler, Bypass.
They didn't last as long as the 250 to 300 HP models though. Truckers did put this engine in their rigs though. That is the "independent" truckers did. The fleets never pushed their engines past 300HP.
Also, these engines could never pass state emissions. They blew smoke and dripped oil like nothing you've ever seen ! That is why they were all replaced by the 1980's for Hiway use. You try and use this engine today and you would have the State Patrol coming at you like you were a "Dunkin Donut" !!!!

There are still concrete mixers on the road here running 6v71's . The old michigan specials run 12v71's.

 

[Floridianson]

Yea had the 8V92 rated at 475 in one of my triaxles dump trucks. Love to put 20 tones in the bed and run.

 

[oboyjohn]

V configured engines don't fit either chassis due to the steering gear being in line with the frame rails.

Our Canadian Deuces ran with a 8.2 litre V8 Detroit diesel under the hood. Had no clearance issues with the steering box ( but ours were on the outside of the frame rail).

 

[MudTruckDaddy]

Our Canadian Deuces ran with a 8.2 litre V8 Detroit diesel under the hood. Had no clearance issues with the steering box ( but ours were on the outside of the frame rail).

These are all the pics Ive found with the 8.2L V8 Detroit Diesel

 

[oboyjohn]

Hi Mud truck daddy,

Those pics of the 8.2L in the Canadian deuce look like ones that I posted here a while back!

 

[MrMikey4026]

I worked on the "screaming Jimmies" in the late 1970's at IHC trucks in Tukwilla, WA.
You could increase horsepower, but it took more than just a tweek here and there.
The "Marine" engines could make 485 HP . The "485HP TIB " built by "Johnson and Towers" used lower compression pistons, longer stroke cams, (usually using the 12 valve heads too) and large Turbochargers with intercooler and large injectors and bypassed the blower at higher RPM. That's where you get the TIB from. Turbo, Intercooler, Bypass.
They didn't last as long as the 250 to 300 HP models though. Truckers did put this engine in their rigs though. That is the "independent" truckers did. The fleets never pushed their engines past 300HP.
Also, these engines could never pass state emissions. They blew smoke and dripped oil like nothing you've ever seen ! That is why they were all replaced by the 1980's for Hiway use. You try and use this engine today and you would have the State Patrol coming at you like you were a "Dunkin Donut" !!!!

You must have worked for Husky?
Me too, and Emerson before.
I have two 6-71 TIB engines sitting here.
Mike

 

[rustystud]

You must have worked for Husky?
Me too, and Emerson before.
I have two 6-71 TIB engines sitting here.
Mike

No, not Husky but the real IHC company. They got sold to Husky in 1982 I believe.
Your not the Mike who lost his ring finger installing an engine are you ?

 

[rustystud]

There are still concrete mixers on the road here running 6v71's . The old michigan specials run 12v71's.

Your state must not be as "anal" as Washington State is then. Anything smoking out here gets a ticket like right now. Also the newer "V" engines ran better for emissions then the old inline engines did.
I still have my set of gauges to run the rack on the 71's and 92's . I almost threw them away last week. I have been going through all my old tools sorting out what to keep and came across them. Giving them away to a good guy who is in his thirty's and could possibly use them.