Replacement Cummins Engine

[Chas]

Pm me what your wanting and what you want to spend and ill tell you if your anywhere near in the real world

Im sure I can sort what your Lookimg for

I've got to be realistic Karl, it's more a dream than anything else, but when my premium bonds turn up trumps . . . . . . .

 

[Shayne]

Makes me wonder about the big lazy 6 everybody loves and why it is "lazy"

 

[karl webster]

Makes me wonder about the big lazy 6 everybody loves and why it is "lazy"

If I actually get it done Shayne ill take you for a spin. We will put 3.5 tonne behind my cruiser and ill show you how lazy it is going uphill lol.

tweak the pump on them and a coupe of low cost mods and you are suppose to have quite a tool. We shall see,hopefully...

 

[Shayne]

Lol i'm sure the Cummins would keep me awake them and Cat are the most common used nowadays in my local fishing fleet , detuned to 350 bhp to keep the pen pushers happy . I was talking about the standard 80 "lazy" is the most commonly used description when its talked about and i do wonder why such a brute of an engine can't be made to produce some serious horses .

 

[frank rabbets]

Shayne what you doing up after midnight .

You'd have to disconnect most of the injectors to get it through MOT .

 

[Shayne]

I have no doubt's about Toyota's 4.2 diesel Frank i would love one in my truck it's just an idle observation that everyone (understandably) loves the torque which is great for towing or if your adding huge weight but i would guess many would like a little more outright power , i'm thinking of Nick and his new Prospeed exhaust here -

Quote Nick
"It had grunt before, ive only taken it to a p&p site once and it didnt notice the difference when attaching landrovers to it, it was like they wernt there but just driving round and about its a bit slow ( im aware its a 3 ton 22 year old truck not designed for speed) and made you wonder what the 4.2 litre engine was up to. On the way back today just....Yay!" Unquote .

Be interesting to see what the engine would do if it were mated to a different gearbox .

 

[Graham]

So in reality, what bhp at TQ can be squeezed from the 4.2 ?

 

[StarCruiser]

I think in marine (Yanmar) spec they can do about 350bhp with a water cooled intercooler and exhaust. Luvley Jubbly!! There's a guy selling an 80 engine somewhere that's had a full rebuild with marine pistons (cost your first born I believe) and pump off a 24 valve with aftermarket turbo.

 

[Beau]

The 4.2 might only seem lazy due to the amount of weight it's always hauling... My thoughts on the engine is it's built to take abuse, it's one of those engines you could haul and abuse on a daily bases and wont break a sweat. I used to have a 1.9 diesel non turbo Ford escort van. Slow as hell, but I carried twice the payload in that thing and it pulled it alright. Put 30,000 miles+ in a year on it and never had to do any work on it.

The marine engines can push decent power because cooling is never really a problem, they're consistently getting cool water.

On a side note, a mate here in the states has a 6.4 ford diesel. Standard turbo and IC are massive on these things. It's a beast of a engine, and the noise it makes is awesome! Now chuck one of those in a 80, and you'll be laughing!

 

[karl webster]

I don't find my 80 lazy.

I used to drve a m3 evo 321hp and I'm into my super bikes. For me the cruiser is good. I can overtake just fine,pull the wieght I want and use it as a daily.

 

[Towpack]

My interpretation of 'lazy' when applied to the 4.2 is that you don't need to rev it to make decent progress as opposed to a 'buzzy' smaller engine, in the same way that a 'Hypersport' motorcycle has lazy power compared to a 600cc Supersport bike where you're up and down the box all the time. The fact that the lightly stressed 1H series engines make only modest power for their size must be a major factor in the high mileages they are capable of with only routine maintenance. JMO

Talking in general diesel engine terms, for many years our local buses used Gardner engines. An old neighbour of ours was a mechanic in the town's bus garage and regularly saw them doing over 1m miles without major overhaul. They've been out of production for many years though.

 

[Shayne]

Perhaps i should explain what prompted the question in my mind was the enthusiasm for the Cummins swap .

Yanmar expense probably results from stronger and lighter everything from pistons to flywheel .

I agree entirely with Towpack on under stressed equals long life and for the same reasons i wonder what Toyota's 4.2 would be like with a gearbox not designed in favour of hauling 3 times the weight of the truck for a million miles .

 

[karl webster]

Good points above Towpack and Shayne.

I think people just expect them to be something they're not. I understand what the 80 is,what it can do and what power it has. More when you play with the engine but as standard something that will be a good alrounder that's will last.

 

[Lorin]

G-Turbo with appropriate upgrades to exhaust, intercooler and fuel pump will give anywhere from 200-300 BHP for the 1HD-T and 1HD-FT depending on the model of turbo. The 1HD-FTE can give up to 350 BHP. All with AFRs and EGTs within safe specs and little/no smoke....

Lots of info on Mud and Oz forums.

 

[Shayne]

G-Turbo with appropriate upgrades to exhaust, intercooler and fuel pump will give anywhere from 200-300 BHP for the 1HD-T and 1HD-FT depending on the model of turbo. The 1HD-FTE can give up to 350 BHP. All with AFRs and EGTs within safe specs and little/no smoke....

Lots of info on Mud and Oz forums.

So the Toyota engine you have is better than the Cummins , that's what i suspected

 

[stumog]

It's 2 very different beasts the Cummings is a cast iron head and block which you can get 1000bhp from with good reliability.

 

[mrdelmonti]

So the Toyota engine you have is better than the Cummins , that's what i suspected

I'd say no. They're totally different engines. The cummins 6bt can run very big hp with no issues.

Both good engines. Just different.

 

[karl webster]

So the Toyota engine you have is better than the Cummins , that's what i suspected

The cruiser engine is a nice thing and up to the job it does.

I just oust like the idea of a cummins in a cruiser for the crazy torque it has. I've thought myself is it actually worth it. Just make a nice change lifting the bonnet to a 6bt

 

[Chas]

Found those You Tube videos

Part one
https://www.youtube.com/watch?v=j4P1RfBO2gA

Part two
https://www.youtube.com/watch?v=N5QUYqjJyV0

Part three
https://www.youtube.com/watch?v=MP8_oSd7DYM

Part four
https://www.youtube.com/watch?v=eW9BWYTTqt4

Test drive
https://www.youtube.com/watch?v=m9RKSqlnFqc

Final test drive
https://www.youtube.com/watch?v=lvBXwuwwupY

 

[Dave2000]

Been a 'horsepower hunter' most of my motoring life, whether it was a 105E Anglia with so much skimmed off the head I had to put extra washers on the spark plugs to stop the pistons hitting them and pockets so deep in the pistons for the valves you could lose a small child in them, and the only way to run the engine was to mix 5 star fuel with glow plug fuel, or a 500 BHP 6.0 V12 with a manual gearbox, my quest for more horses limited only by my wallet and I never even looked at a diesel for car use, my experience being only with heavy commercials.

Having said that the old saying 'there is no substitute for cubic capacity' has always held water. Big capacity/low power output engines are under stressed and tend to last for donkey's years and the LC 4.2 is no different. I think in the scheme of everyday life, the Toyota 4.2 turbo seems to have a nice balance between power/reliability and longevity, mine now approaching 1/4 of a million miles and never been 'opened' adds credence to that statement.

I love big engines and think the 80 with the 'big six' is well matched, I still drive it quite hard and it never fails to impress whether loaded or not, I would need some serious reasons to carry out the mod to the Cummins, but would love to see it done and have a test drive.

regards

Dave