450c engine swap

[CUMMINS]

Yes Im looking at buying a 450c crawler with a hole in the block he has a replacement engine out of a 450g with a turbo does anyone know if this will work new engine model #4276T

Thanks

[jdemaris]

Yes Im looking at buying a 450c crawler with a hole in the block he has a replacement engine out of a 450g with a turbo does anyone know if this will work new engine model #4276T

Thanks

I don't know the answer - but I can think of a few possible problems you ought to check on. With the later diesels - including the 179, 239, and 276 - they are available in two versions - light-block and heavy-block. Light-block versions are not suitable for use in many older crawlers - that because the block is relied on to support many structural parts. That is the biggest pitfall of using some newer Deere diesels in older equipment.

I do know the 276 was used with an HL-R in the 450E series. The block in that 450E is a different part # than those used in the 450Gs. Also, 450Gs had two versions - short crank and long crank.

When Deere resells factory-authorized-rebuilt 450Cs, they put new 239s in them - with heavy blocks.

As I said, I don't know - but if it was me - I'd make sure, at least, that 450G engine is a heavy-block version - and if not - I wouldn't consider using it in a C.

[CUMMINS]

do you know how to tell looking at the engine all I have wright now is a model # 4276TF

[jdemaris]

do you know how to tell looking at the engine all I have wright now is a model # 4276TF

I don't know the casting #s - but . . . it's a night-and-day difference in the way the blocks look on the outside - when you have a light block next to a heavy. The lightweight blocks simply look lighter since Deere left out block mass and there will be hollow spots on the outside of the block. Deere used lightweight blocks in some backhoes and power-units - but I'm not sure about the newer crawlers.

I do know the heavy block 276 used in 450Es with HL-Rs has casting #s RE108755 or R124851.

[RANDY Fay]

If it was made in John Deere Dubuque Tractor Works it is a normal block and should work fine have fun Randy

[CUMMINS]

he said its out of an air compressor if that helps not a 450g just has the same model #

[jdemaris]

he said its out of an air compressor if that helps not a 450g just has the same model #

If it's out of an air-compressor - you'd better check closely. Light engines are used more in power units than anything else. 300 series engines e.g. the 4-276 can be light-block or heavy-block, regardless if from Dubuque, Saran, France, etc. Somebody probably has a list of casting #s somewhere - I don't. Like I said before though - there's no mistaking them - the lightweight blocks look quite different on the outside.

[CUMMINS]

thanks for the info I will look for the block # the next time I look at it

Thanks Again
Cummins

[digitup2]

4276 had an over sized water pump and it sat high enough to not fit nice in the older dozers like that one .The pump used on a 4276 is from a small six cylender version and mounted higher on the steel front plate that is why the 550 series and 450E were built so tall in the engine cover and rad area so start looking for an other engine at least or you could stick the water pump out the top of the hood but the fan and rad hoses would not line up.You need that smaller version of motor maby take it and trade motors with what you have but it would be an ugly shoe horned mess to put togeather .Digitup.

[RANDY Fay]

Serial Number Idenification

First digit 3=3 cylinder
4=4 cylinder
6=6 cylinder
Second through fourth digit 135
152
164
180
202
219
270
303
329
404
531
Fifth digit G=Gasoline
L=LP gas
D=Diesel
C=Altitude compensator
T=Terbocharger
Sixth digit=Using Factoy
Seventh digit=Dash for separation
Eighth and ninth digit 1-2 etc. =version number for each general engine type
Tenth through fifteenth=numerical serial number

It should be noted that serial number indicates the number of cylinders
and cubic inch displacement of the engine
have fun Randy

[digitup2]

I pulled my 450E beside a friends 450C on the weekend and compaired engines .It looks like an ugly fit to me 4276 are even taller in the casting and heads department as well .The dozers use a casting with extra web and beafier castings like was mentioned earler The origional 4239 engine had less HP and a whole lot less torque than a 4276.looking at the charts I would say after 1750 rpm it would be a whole new experiance for that old 450C .Light build engines are not worth a lot either but that 4276 stationary engine would go to 105 HP and averaged 109HP way to much for that 450 C.Sell the power plant and get a new block from Deere same engine less bucks .I would go to a rebuilder but they are always chewing about a core charge and you have no core keep in tuch .Digitup.

[CUMMINS]

thanks for the info will let you know what happens