Cummins ISV 5.0 V8

[Shadrach]

Here are some pictures of the new V8 engine. One is mounted in a training module with DPF and everything. This particular version is rated at 275 HP and could power for example a school bus or a class C motorhome instead of the gas sucking V10. The other one is being taken apart for training. It has double over head cams ( 4 in total) and 4 chains driving the components.

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[Shadrach]

More pics:

Turbo mounted at the rear : yuk
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CP4 fuel pump mounted in the front of the "valley"
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Oil pan ( black ) with aluminum adapter
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Valve cover assembly
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[mpaulson]

Looks busy in there for working on.

 

[Tuesdak]

Thanks for sharing.
Where are the glow plugs?
How long is the chain and what is the spec on it's stretch service limit?
Are there bearing shells in the head for the cam bearings or does it run on the head material?
Love the simple 2 bolt water pump...

 

[SnoKing]

Looks busy and maybe heavy. Also looks like a lot has to come off to get to the CP4.2 injection pump at the front of the valley. Access to the fuel filter from the top and oil filter from the bottom looks good! SNOKING

 

[Shadrach]

I can't answer all your question but I have been studying the parts catalogue and talked a bit to the guy doing the training ( I didn't get to take the class ). Here is what I have found out so far:

4 camshafts, each one has a gear on the front of it. These mesh with each other. Each cam is different. Cams are held in the head with a "cap, camshaft bearing" ( # 10 in drawing ) so no separate bearing shells. See photo # 4 in post 1. Glow pin is # 18.

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4 chains. 2 long ones one up to each head to drive the cams, inner cam has a sprocket which the chain goes over. One chain drives the lube pump, the other the fuel pump. The crank has to double sprockets on it for the chains. There are chain tensioners and chain guides.

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Water pump is similar to the 5.9/6.7 design but with a multi groove pulley on it. There are 2 fuel filters. See picture #1 in post #1. Primary is at bottom left of picture and would be mounted on the chassis somewhere. Secondary is up top by yellow dipstick handle. It has a black cap on an aluminum body and could be easy?? to change depending on vehicle. Oil filter can be seen at the bottom front of the engine and should ? be easy to change as well.

 

[Tuesdak]

That is good news on the 3 chains as the high pressure chain will have the most load on it. As we know the cam and 'low pressure' injection pumps stretch double roller chains on 6.2/6.2 diesels quickly.

If you loose oil pressure and ruin the cam bearings, what is the repair procedure? Is their an oversize cam or is it replace heads?

 

[Ozymandias]

Looks like a Furd Engine, difficult and a lot of wear parts. Don't like it. That's a car engine not a truck engine anymore.

 

[Tuesdak]

Looks like a Furd Engine, difficult and a lot of wear parts. Don't like it. That's a car engine not a truck engine anymore.

Me and a friend are looking at a late 1990's DOHC V6 Ford with a hole in the oil pan that burned up the cam bearings hence my question. We are swapping the engine with a used one...

 

[DonFitzwater]

JD, you can bet you'll need more than cams and a head if this girl is run low on oil or loses pressure.

 

[Tuesdak]

Do these engines have a life rating in miles or hours like the ISB engines do?

I wonder about value engineering as the rest of most vehicles don't last so well past 200K without being a parts black hole. IMO in the target market of 1/2 tons this makes more sense.

 

[RUSSELL5000]

I was doing some research on motorhomes. Tiffin is using the ISV 5.0.

 

[SnoKing]

I was doing some research on motorhomes. Tiffin is using the ISV 5.0.

Is it a FRED. I had a friend with a Tiffin FRED 6.7 and it was noisy to drive with the engine under your feet. SNOKING

 

[dcs1968]

My ISB 6.7 sure looks a lot easier to work on.

 

[Wayne M.]

The only Cummins design giveaway is the water pump. Everything else looks automotive, or navistar/ Ford.
One BIG plus compared to the other popular V8's is that the fuel system is exposed. That could be its salvation.
Thank You Shadrach for putting this up. Now if only we could see a head flipped to examine the chamber and piston bowl design.

 

[TFucili]

What's the redline on this thing? I can't see the need for DOHC in something that doesn't wind to the moon.

 

[Larry Willard]

Is it a FRED. I had a friend with a Tiffin FRED 6.7 and it was noisy to drive with the engine under your feet. SNOKING

No it is a pusher, I don't remember the length but is only available in one model.

 

[Shadrach]

The trainer didn't have the cylinder heads off. Check this out from Cummins onYoutube https://www.youtube.com/watch?v=vFx0H3L_1cE
David

 

[mwilson]

Can't help it, but something about that Cummins looks familiar to me.....

I think it's a Diesel Northstar engine.....:-laf

 

[Shadrach]

Of course the layout of a double overhead cam is similar. The Northstar has 2 sprockets and a cain drive, the Cummins is gears to gear with one sprocket and chain. So There

Have you seen any ISV's in a F/L chassis yet?