tl1975

Darn it, yeah I could have used that. I figured I'd rather buy from an individual instead of salvage. Thanks anyway

Pittsburgh, PA area…. anyone selling a 10 speed RoadRanger? Looking for either an RT-910 or RTO-910. (Would consider an FR-9210)

1 hour ago, Vladislav said:

Funny thing but if we talk about Mack truck transmissions I have done only ONE swap to the moment. Took off T2090 and put T2070 in its place in a R-model. But I collected a bunch of different transmissions during the years and investigated many aspects of the matter.

Of what I can tell answering the question above both TRL107 and T2050 would fit the flywheel housing of a E6 or EM6. Probably both have 2" thick input shaft with the same number of splines (10?). But T2070 (2070,2090 etc) seem usually combined with 15.5 inch clutch and T100 series units were fit to 14" setup. I don't know if is it possible to install T200 series unit using 14" clutch or not. But I can tell swapping the clutch would require swapping the flywheel since they were of different styles.

The tranny mounts seemed not interchengeable since T200 used cast mounts and T100 were welded of thick steel. But chassis brackets look the same. So if you're going to put T2050 (2070 etc) into a R-model you just need a pair of tranny mounts for T200 used in a R-model with Mack in-line 6 cyl engine. Which seem as a pretty common part. Aside of that the prop shaft would need its length corrected (cut and balanced) and possibly another shifter lever found. If you're going to use T2050 which was taken off a R the lever would fit fine. But if the tranny goes off say a DM it would be found between your legs when put in a R-model cab.

Another story is the very reason to use T2050. It has quite fast OD which would be good in a work truck combined with relatively slow rears. Something like 5.73. And also depending on the tyre size and sure the kind of job you're going to use it for. One more point to doubt over is T2050 is only 5 speed. And if you use T2070 or T2080 it would be almost the same amount of job and mods to install (and the same fast 0.60 OD) but a few additional crawl speeds which may be of use in many situations.

Vlad

Very impressive, thank you for the information. I cannot remember what ratio the rear ends are, so I will have to check on that. The truck is a 1988 RD690S and has been parked in a building for years. The engine and the transmission were removed many years ago. Using the VIN, I was at least able to find out that the engine and transmission should be an EM6-250L four valve with a T2050 five speed. I know a fellow who has a TRL 107 five speed on hand, and he has an EM6-237 two valve and an endt-675 too. All out of R models. I am just not sure if anything different would work or what my combination options are (if any). Looks like maybe the front engine mount might be an issue too. The truck would just be used for local running. 

1 hour ago, 67RModel said:

Same concept but different ratios (and rear end ratios). Both were intended to be paired with a Maxidyne engine. The TRL107 is direct (1:1) in 5th whereas the T2050 has the very fast overdrive (0.6:1) in 5th. All T20X0 transmissions with 5,6,7, or 8 speeds had the 0.6:1 overdrive, were direct in 4th, and were paired with very slow rears usually (5.73 to 6:39 or higher numerically). Trucks with a TRL107 usually had 4.00 - 5.00 rear end ratios. A T2050 will have 5.24:1 in first gear, 1:1 in fourth, and 0.6:1 in 5th. Don't know what 2nd and 3rd would be. 

Thanks for the information. Out of curiosity, on a truck with an EM-6 or ENDT-675, could a TRL107 be swapped out with a T2050 without any major modifications (ie mounts, bell housing bolts etc)? 

How does the T2050 five speed transmission differ from the TRL 107 five speed transmission? What are the gear ratios for the T2050? (1988 R690)

Hello. I have a 1988 RD690S (EM6-250L 4VH and 5 speed) and wanted to ask you all a few questions about the interchangeability of parts from a late 70's/early 80's R685S (EM6-237 2VH and 5 speed). Both are cab & chassis now and I'd like to make one truck out of two, IF it's possible. The RD690S has a good frame but bad cab and engine, and the R685S has a good cab and engine but bad frame. Hoping some of you could help me out with the info. My questions are:

- Can the EM6-250L 4VH engine be directly swapped out with the EM6-237 2VH as far as engine mounts, space, etc? 
- Will both 5 speed transmissions be interchangeable using the same mounting?
- Will the RD690S cab directly swap out with the R685S cab? How about the hood?

Any info is much appreciated. Thanks!

Any idea what engine is shown in these two pictures? Endt-673 or endt-675??  No info tag behind the fuel lines. It’s in a friends 69 R model. 

thanks for the info guys!

I was at a repair shop awaiting some parts and there was a late 80's superliner in there for service. On the side of the hood it said "econodyne", and the person at the counter said it was an 88' RW613 with a 5 speed transmission, and he said it wasn't a V8 but a mack inline 6. Just for my own information, which of the inline 6 engines would mack have put in a econodyne superliner with a 5 speed??

7 hours ago, 67RModel said:

I have an NTC 855 Big Cam 350 horse if you are interested. It has an eaton fuller double overdrive 13 speed still bolted to the back of it as well. They have been sitting in a warehouse for the better part of 30 years. The set came out of early to mid 80s international cabover that had 93,000 original miles. I have all the information and VIN number of the truck it came out of if you ever needed to get parts for it. I know its not an NH220 but I figured I would throw it out there. I have no use for it and need to get rid of it. I am 20 minutes from Pittsburgh.....near the airport. Thanks.

Thanks for your offer.. that would be a little too big for what I’d need it for unfortunately. 

Anyone know of any Cummins NH220 engines for sale in the Pittsburgh PA area? 

On 7/9/2019 at 7:59 AM, youngstown.bulldog80 said:

Attempting to identify a couple main/aux transmission setups. The ID tags are as follows: Main - Fuller 5H74T,  Aux - 8031e....I'm guessing that the main is simply a 5 speed direct in 5th (looks like single countershaft), but is the 8031e an old spicer 3 speed aux transmission?

That Fuller 5H74T you mention, it's an ancient 5 speed transmission, I think it pre-dates the T905 series. It's very small (if I'm remembering correctly), and I don't even think you can get internal parts for those anymore.

It's been a while since I've been exposed to anything with 2 sticks, but I believe you're correct about the auxiliary transmission being a 3 speed. But look closer at the tag, because it may say 8031C instead of E.

Anybody ever use one of those waterproof class B RV covers to cover an R model? Or is there any type of cover out there made for trucks? Have to move mine outside for about 6 months and I’d like to protect it somehow.

56 minutes ago, dogg rescue said:

I have the left and right toe panels if Alex G. Doesn't 

Great thank you!

1 hour ago, Coenut said:

I think there are just 2 pans both are available.  Not cheap. Get to fabbing.

Yea most likely. I contacted a local Mack dealer and the “kid” at the parts desk said it looks like there’s four pieces and it’ll be 500 each for the toe pans and 275 each for the floor panels. Wow! 

1 hour ago, alex g said:

I might have some of these pieces I'll have to look and get back to you probably by weekend. Check with watts first they supply us with this website.

Ok thank you. Let me know. I sent you an email on here too. I checked Watts website, the have the sills for under the doors but did not see any floor pieces. 

I have a '72 R685ST, it's time to replace floor panels...looks like there is a toe pan and a floor panel on each the driver and passenger side, 4 pieces total. Does anyone have any info and/or leads on if there are aftermarket replacements out there somewhere.

39 minutes ago, farmer52 said:

I agree, nothing says you can't go for a Sunday or occasional drive.  I never been stopped but I am usually going to a show.  Last summer I drove from PA to IA to attend the ATHS show in Des Moines.  I never got stopped and went thru several weight stations.

Perhaps you can tell the cop you are going for coffee and donuts.  Invite him along and tell him you are buying. 

Well that’s an idea, but then I’ll have the whole department to feed  ☕️ 🍩

thanks for all the info! "Not For Hire" would be visible just to be safe. Anybody with historic plates...has any cops ever bothered you guys for driving "too frequently"? I've heard people say that they've been pulled over and had an officer tell them a truck with Historic plates isn't supposed to be used as general transportation. I mean, when the weather's nice out how can they stop you from taking a Sunday drive in the summer and going for ice cream??

2 hours ago, Freightrain said:

I too put Historical plates on my 'B61 15 yrs ago.  Yes, the DMV gave me dirty looks and "you better not be using this commercially" comment.   No problems.

With these plates, you don't need any DOT number or IFTA.  Just don't get caught hauling freight or doing something "illegal"  LOL!!  I use my truck to pull my 40ft race car trailer everywhere.   I'm skirting that grey area of the law, but so far, so good.  I have my CDL, so I don't worry about being hassled.

Yeah it seems the DMV doesn't like handing out historic plates. I won't be doing anything commercially, if anything, I'd haul another antique vehicle with it to truck shows. But it would be my own personal property. I've noticed a lot of people at the truck shows do not have a CDL. Some plates even say recreational vehicle, but I don't know how they pulled that off.

1 hour ago, eddeere said:

I went to the local Bureau of Motor Vehicles Registration office in Preble county OH and got historical plates for $46.45 in 2014 for my B 61. The are good until 6/30/2050 . I doubt that I will be good for that long . 

Did they make you get a US DOT number? Wouldn’t think one is needed as it’s not commercial but I’m not sure. Does the historical plates include the registration? 

Anybody know how to go about registering an antique semi and antique trailer in the state of Ohio?? I get different answers from the DMV each time I call, so figured I’d ask on here as I’m sure there’s others who have registered antique semi’s for recreational and show purposes in the state of OH. 

Aside from HP and Torque, what are some things (if any) that would make an Econodyne engine (say an EM6-275) differ from the older 6 cyl. Maxidyne ENDT engines? (I imagine emissions and maybe four valve heads but just wondering if there's anything else). Operating ranges the same?

Thanks for the information. Good idea, just time consuming.