Much has been said on this forum about the comparisons to be drawn between the Lionel and MTH scale versions of Pennsylvania J1a 2-10-4 workhorse locomotive. I have both models and wanted to post a series of pictures to show both manufacturers have produced an excellent model with lots of detail. The models for the purposes of this photo comparison are MTH product no. 20-3160-1 (Pennsylvania J1a no. 6170) and Lionel product no. 6-28078 (Pennsylvania J1a no. 6496). I do not have the newer Lionel Legacy J1a so this comparison only involves the older Lionel model.
The foreground model is MTH (Pennsylvania 2-10-4 no. 6170). The model came with one missing screw in the headlight support so the headlight might appear slightly off level. The grate level below the faceplate has larger grid detail than the Lionel model and this tends to stand out more when looking at the locomotive. A face on view will appear below. Also, the edge goes to MTH for the detailing on the front end. The rivet detail is slightly larger and stands out more than on the Lionel model with (cast in) hosing on the pilot. Both models have excellent builders plate and marker light details.
The overall tint or color on the MTH model is somewhat lighter than the Lionel model. Both look great!. It seems the MTH model has slightly more piping detail and more handles, etc., but the valve wheels on the Lionel model are much larger and stand out nicer than the valve wheels on the MTH model. Again, the foreground model is Pennsylvania no. 6170 (MTH).
Here is the front side (Lionel on the left and MTH on the right). You can see the additional hose detail on the MTH pilot and the larger grate detail on the radiator area below the road number plate. I also like the handle details on the feedwater heater atop the boiler better on the MTH model. Lionel's handrails going up the side of the ladder appear sturdier, straighter and less subject to distortion. I bought the MTH model new and the Lionel model used (thanks Leapin' Larry!!). The more pointed pilot on the Lionel model seems more accurate to me than the more flattened pilot on the MTH model.
One of the faults noted on the forum for the MTH engine is the tender which appears similar to the tender used on MTH's Pennsylvania Q2 4-4-6-4 model, MTH product no. 20-3028-1. Overall the tenders are about the same length and have many similar details with the main differences being the length of the coal bunker and some of the detailing just behind the coal bunker. As you can see from this view, the overall length of the locomotives is similar. I like the deeper maroon coloring of the tender deck on the Lionel model (top) than the orangeish-red color of the MTH model (bottom). In studying photos of the Pennsylvania J1a, the Lionel model appears to be a more accurate representation of the size of the coal bunker in proportion to the tender than the MTH model. But hey, the J1a is a big engine with a hefty appetite for coal and water!!
The Lionel J1a tender. Notice the slide marking the end of the coal bunker extends above the letter "Y" (the sixth letter back from the front of the tender) for a correctly proportioned shorter coal bunker.
The MTH J1a tender. Notice the slide marking the end of the coal bunker extends above the letter "S" (the 8th letter back from the front of the tender).
Overhead view of the J1a tenders with Lionel on top and MTH on bottom showing differences in detailing behind the coal bunkers. The Lionel model uses larger stiffer wire for the detailing that does not bend as easily as the MTH wiring at the rear of the tender.
Cab detailing on the Lionel model. Lots of rivets on the firebox. Notice the rear driver also sits in front of the firebox.
The drivers on the Lionel J1a.
Cab detailing on the MTH model. Less rivet detail on the firebox. Last driver extends slightly under the firebox.
The MTH model, foreground, has more detailing on the feedwater heater in front of the smokestack than the Lionel model but, even in the background, you can see the red valve wheel stand out on the Lionel model. The MTH valve wheel is small in comparison and is angled forward just behind and between the builder's plate and the piping just below the
handrail. The top of the MTH model's boiler is seemless.
With the Lionel J1a in the foreground, the red valve wheel stands out but the piping detail is cast in. I realize the comparison drawn here is with an older Lionel model. I am sure the new Lionel J1a has the piping added on as a separate detail at the front of the boiler. The top of the Lionel model's boiler sports a seem to the rear of the superheater cover and the sand dome.
This comparison is somewhat dated because both these models were made some time ago. If anyone has pictures of the new Lionel J1a it would be interesting to see all the improvements Lionel has made to the latest version of this venerable locomotive.