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Cummins swap discussion

2nd 392

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A little funny business with the VIN can solve that.
That should have dawned on this Harley guy. :blush: it’s called “creative” not “funny business” 😉
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mwilk012

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I’m not even sure if it would be illegal in any way, you’d have to register it as the 392 with a salvage/rebuilt title. It shouldn’t matter from there.
 

2nd 392

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I’m not even sure if it would be illegal in any way, you’d have to register it as the 392 with a salvage/rebuilt title. It shouldn’t matter from there.
Ca would probably give you life at hard labor they are so anal about emissions… When the smog laws were changed from year of engine to year of vehicle, but had a grandfather clause for those already done it took “creative writing” backdating on a sales receipt for the pre smog numbered L-79’s short block from my Jeep to get it registered in a friend’s gutless 75 Chevy PU. Well over twice the HP with a 50% Mpg gain from 8 to 12. I got the bow tie block he couldn’t use, and got stupid with a full 6-71 blown build.
 
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john adams

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The advice about the deletes is all well and good but not really an option in most places unless you’re playing games to buy stickers.

Not doing that, but that’s just me.
 

BuyHold

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A little funny business with the VIN can solve that.
Sort of a philosophical here question but when fabricating a frankenstein vehicle with components from multiple vehicles, what donor vehicle's VIN would ultimately apply to the final product?

Someone on this thread cited a Gladiator body on a Ram Cummins frame+mechanicals. Would VIN be the Ram or the Gladiator, for example.
 

2nd 392

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Sort of a philosophical here question but when fabricating a frankenstein vehicle with components from multiple vehicles, what donor vehicle's VIN would ultimately apply to the final product?

Someone on this thread cited a Gladiator body on a Ram Cummins frame+mechanicals. Would VIN be the Ram or the Gladiator, for example.
I would use the one for the mechanicals for compliance reasons. Just like kit cars when you put a “Cobra” etc body, built using a donor “Mustang” rolling chassis, or others, down to a simple VW “dune buggy” and other bodies for them.
 

mwilk012

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Sort of a philosophical here question but when fabricating a frankenstein vehicle with components from multiple vehicles, what donor vehicle's VIN would ultimately apply to the final product?

Someone on this thread cited a Gladiator body on a Ram Cummins frame+mechanicals. Would VIN be the Ram or the Gladiator, for example.
The one you can convince a government employee to accept.

It’s the Ship of Theseus. When do you draw the line? You can swap an engine, and the vin doesn’t change. You can change a frame. You can change a door. You can change axles, body panels, but if you change it all? Eh. Truly philosophical.
 

1945gpw

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I’ve built two LJ rubicons, one with the 4bt and the other with the r2.8. Both were cool but without getting into lots of details, keeping the original 3.0 and rebuilding it would be much less headache and cost if something did go wrong with it.
 

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I have a 4BT Scrambler I built from stock & I’ll say I wouldn’t want that power plant in my Gladiator. Nor a 6 cyl Cummins.
I will delete my JT when the warranty runs out & hope there are parts to keep it rolling for a good long while.
 

WXman

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When the OP said Cummins swap, at no point did the 1,000 lb. 5.9/6.7 engine come to mind.

The 4BT is essentially the same engine with two fewer cylinders, and most of them will run with like three wire connections. They are probably the easiest engine you can buy to transplant and get running. And you can find them in salvage yard bread trucks dirt cheap.

The tough part would be making the dash display, instruments, and HVAC controls and such all work properly. But it should be doable for WAYYY less than $30k. Probably a fraction of that.
 

driventoadventure

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Cummins still makes a turn key 2.8L. It is way down on power compared to the Ecodiesel, but that is due to the emissions tuning since it goes through a more stringent engine dyno certification and not a chassis dyno certification like complete vehicles do.

https://www.cummins.com/engines/repower

If I were to ever swap anything into my JL, I would put a BMW M57 3.0L inline-6 turbo diesel engine. Those things are bullet proof even at high horsepower and already mate up to the ZF 8-speed transmission. I have seen them at over 500 rwhp with stock internals.

Unkillable Diesels: BMW’s M57 I-6 | DrivingLine
Those M57 and that line are sexxxxy. I may be mistaken, but isn't that the engine line that Diamond used in their airplanes before they started doing them in-house as whoever the first company was and then Austro engine?
 

mchastings

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yup sure do, rebuild cars as a hobby. i also design and build aerospace furnaces for a living. Cars and trucks are easy
I want an aerospace furnace in my TearDrop Trailer!
 

Tpsillos

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If you have to ask, triple the price.

No, it’s totally unreasonable. It’s like suggesting a hellcat drop in replacement for a 3.6. It’s going to be very, very expensive, and lots of things are going to have to be modified or outright removed.

It has been said a 5.9 Cummins can technically fit, a 6.7 isn’t happening.
A 6.7 is no bigger on the outside. a cummins engine is probably not much more than an ecodiesel either.
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