Western Railroad Discussion > GP38 vs GP28 Difference

I was out in Pasco, Washington 6/02 and saw an opportunity
to take a couple of pictures of a Santa Fe GP38 and thought
I shot them in 2 different paint schemes and now I look at
my images and the second one is not a GP38 or GP38-2 but
a GP28 # 1504. I never knew what a big difference they had.

Just sharing a revelation I had. Thanks for looking !


Jay

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when bn rebuilt locomotives back in the 80s and 90s, gp30 and gp35s were given different designations,some were gp39,gp28,etc... alot of them had a letter after the model to designate who did the rebuilding, v for vmv paducah, m for morrison knudson, e for emd... not sure how the designations have held up over the years,that letter may have been dropped due to irrelevance.

Railroad Pictures Archive shows BNSF 1504 started out as Northern Pacific 266, a GP9

An actual GP28 built by EMD had a GP35 frame which was shorter than the GP40 used for GP38 locos. GP28 locos had the GP35 style air intakes.

Think IC for GP28s. It was a very limited production locomotive.

dash944cw Wrote:
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> Railroad Pictures Archive shows BNSF 1504 started
> out as Northern Pacific 266, a GP9

Correct.  1504 was not a true GP28.  MK applied that designation to the project that they developed using GP9/18 cores.  MK rebuilt 50 units to that specification.  I do not believe VMV or EMD built an equivalent.

The GP39's were built from GP30 and 35 cores.  The 39 designation came from the fact that they used GP39-2 electrical specifications (AR10 alternators, dash 2 electrical cabinets, D77 motors (later units may have had D78's) etc.)  The diesel engine was a turbocharged D block 16 cylinder 567, upgraded with 645 assemblies and rated at 2300 hp.As pointed out, the M meant Morrison Knudsen, V meant VMV and the E meant EMD.

 

fbe Wrote:
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> An actual GP28 built by EMD had a GP35 frame which
> was shorter than the GP40 used for GP38 locos.
> GP28 locos had the GP35 style air intakes.
>
> Think IC for GP28s. It was a very limited
> production locomotive.

EMD built 26. 

"Real" GP28's: 16 domestic, 5 to Peru and 10 to CH-P in Mexico = 31.
I think I saw one once on the daily local when I lived along the ICG ex-GM&O main. IC bought 12.

TJY

So I guess these were all built as GP28's and the BNSF engines are
a whole other breed of GP28, correct ? I guess 1504 is a imposter ?

These 3 shots are all from the Bakersfield area of SJVR GP28's. The
1829 looks a whole lot different from 1826. I am guessing the 1829
is some what newer ?


Jay

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icancmp193 Wrote:
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> "Real" GP28's: 16 domestic, 5 to Peru and 10 to
> CH-P in Mexico = 31.
> I think I saw one once on the daily local when I
> lived along the ICG ex-GM&O main. IC bought 12.
>
> TJY

Yeah I forgot about exports.

lamta_jay Wrote:
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> So I guess these were all built as GP28's and the
> BNSF engines are
> a whole other breed of GP28, correct ? I guess
> 1504 is a imposter ?
>
> These 3 shots are all from the Bakersfield area of
> SJVR GP28's. The
> 1829 looks a whole lot different from 1826. I am
> guessing the 1829
> is some what newer ?
>
>
> Jay

1829 has been upgraded with paper air flirtation and it appears to have some kind of changes to the radiator screens,  I believe that these are all from the IC order, however.

You are correct, these are "real" GP28's.

That is correct, your 28 is not a 28 unless it was a real 28.

Real GP28's did not have dynamics. I believe a GP28 is a non turbo GP35.

Mike Root
Madras, OR

shortlineboss Wrote:
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> Real GP28's did not have dynamics. I believe a
> GP28 is a non turbo GP35.

Sort of, a GP35 has a turbocharger and 2500 hp. A GP28 has Roots blowers and 1800 hp. None of the US GP28s had dynamic brakes while GP35s might have dynamic brakes or come without dynamic brakes. Dynamic brakes were an option on GP28s though none were ordered that way.



Edited 1 time(s). Last edit at 06/22/17 18:39 by fbe.

True GP28 here! ex IC 9436, now this resides at GP28-1 MB 1806 :( But at least it is still running around!

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F&P 1805 shows the classic GP35 air intake grills and radiator grills. Not visible from this angle are the flat top intake housing cover and two non turbo exhaust stacks.

True GP28 still running in SE Massachusetts/Cape Cod
http://photos.greatrails.net/showpic/?photo=2011030919402430759.jpg&order=byrail&page=31&key=467&photoindex=3&maxpage=1&maxphotoindex=4&key2=

Have a Safe Day
BMH

IC ended up with 13 GP28s. 12 they ordered and one that came
with the merger with Mississippi Central. The IC's were 9429-9440,
and the MSC unit became IC 9441.

ICG also had 2 SD28s, even rarer than the GP28 model. These were
from the merger with Columbus & Greenville and became IC 9450-9451.
They lasted long enough to get the new IC black paint.

You most certainly could get dynamic brakes on the GP or SD28, if
you ordered them that way.

Those "paper" air filters are not paper at all. They are fiberglass
"baggy" filters.



Edited 1 time(s). Last edit at 06/22/17 20:07 by Realist.

The 10 GP28s built for ChP in Mexico had dynamic brakes. In addition the last three had high short hoods housing steam generators for passenger service.

Realist Wrote:
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> IC ended up with 13 GP28s. 12 they ordered and
> one that came
> with the merger with Mississippi Central. The
> IC's were 9429-9440,
> and the MSC unit became IC 9441.
>
> ICG also had 2 SD28s, even rarer than the GP28
> model. These were
> from the merger with Columbus & Greenville and
> became IC 9450-9451.
> They lasted long enough to get the new IC black
> paint.
>
> You most certainly could get dynamic brakes on the
> GP or SD28, if
> you ordered them that way.
>
> Those "paper" air filters are not paper at all.
> They are fiberglass
> "baggy" filters.

Today they are fiberglass baggie's.  When phasing out the old oil bath filters, the first step was paper.  When a customer spec'ed "paper air filters" we knew what this meant.

I believe the Southern was the last hold out for the old oil bath type filters.  The had several GP38-2 orders with oil bath.



Edited 1 time(s). Last edit at 06/23/17 07:33 by NYSWSD70M.

Two of San Joaquin Valley 1825 ex IC 9430 in Fresno in June of 2014 with a new paint job. Probably has some additional decoration by now.

1st is at Mckinley & Clovis Ave at the Airport.

Second is parked along the UP downtown.

Jim B

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