Freightrain

Never mind. Can't delete the ad.

Ok. My flywheel housing is about 6" ish. The transmission Bell housing is 6 1/4". You mentioned #1 SAE. But mine has 3/8" bolts like a #2?? So, the flywheel bells are the same, it is only the transmission side that is deeper. My dual disc flywheel stuck out about 1" from housing. I assumed that would be wrong. Guess not? You can see it near the end of my start up video. https://youtu.be/dkojHq2QnyI?si=I_sGrLVA3SuGBH-D Awesome, thank you for clearing that up. This gives me better insight on what needs to happen.

I made a lot of assumptions when I started this. I assumed that the deeper flywheel would need a deeper housing? When I started this 237 using a dual disc flywheel, it stuck out the end of housing about an inch. I assumed it would deep a deeper housing. I'm wrong? That saves a lot of messing around(removing and dialing in new one). Can someone measure their Mack flywheel housing and I can compare it. Mine has lower right starter, like a B model so I assumed it might be incorrect. I think most R models are upper left? Or maybe this is just another quirk of it being from a fire engine? The more times I get into finding information about this, the more I learn that I don't know much.

Heck, If I could just use my single push and get a shorter input for a 13 spd that would make things a HUGE amount easier. It would be a bolt in. I have a 2" input currently. Only reason is my triplex is just gone and want something that is smooth, quiet and stays in gear. I just need to find a box that has side mounts for a Mack application. I could even live with a 10 spd if I had to. Just needs OD.

Eaton

Interesting. I'm not versed in all this so it seems strange it was a twin disc? My 237 came from a fire truck and was a single disc. I want to upgrade so I can put a 13 spd in it.

Need a dual disc flywheel housing for 237-285. Closer to NE Ohio the better.

How easy to get? Part number? Someone have one laying around close to NE Ohio? I need to change out my single disc flywheel so I can upgrade my transmission. I have a flywheel already.

Mark? I met him at South Bend. Very cool piece. V8 cat if I recall?

A B model for more comfort? That is going in the wrong direction. Lol. My heat works great in the summer and the AC works good in the winter. 😂. Unless you do a lot of upgrades, they are drafty old trucks(kinda like an army truck). I've used mine for the last 23 summers to drag my race car around the East Coast. I added a 237 for some power, cruise control, AC, air steering, air ride. Still rides like a slow moving 50's buckboard. You will miss that 400 Cummins! I would recommend an R model with some factory power.

My hand pump clamp never comes loose? Just light snug and it is good. Never really use it much. I ran mine low on fuel once, sucked air and stalled. I pumped it up for 20-30 seconds and my air starter lit it off easily. Stumbled a few seconds and then was fine. I was on the side of road with no air available, so I only had once chance to get it running.

Bob's eyeing up that U hood. 😆. You'll see his post below about his start on it now that he is retired and bored to death. 😜 Nice project.

I keep my head up but we all know what happened the last time. We were in a good place but "they" couldn't handle it and just made a mess anyplace they could(of course in their cities).

That scene is from Planes, Trains,and automobiles. I think from where they spun out on the highway.

Depending on the OD, it could be 12 pitch which you could buy a fine thread bolt, cut it off and mill a slot. Presto, replacement.

Found this one finally. https://www.facebook.com/reel/755480683425230?mibextid=rS40aB7S9Ucbxw6v

I've dreaded this whole mess. They win, we're screwed. We win and they make our lives hell for 4 yrs. Who wins?? No one.

The upper port, in the head, is the output. The lower port just below is the intake. Mine has a small box with foam filter bolted directly to compressor . Many older trucks had rubber hose coming from air cleaner tube up at engine. This is picture of my 237 before stripping it down and getting it installed. I already removed the fittings from the compressor. I actually installed the compressor from my 673 because it was already rebuilt.

I realize there is no vacuum,but I was looking at it backwards. It is actually leaking boost like others said. Unless there is a poppet valve or regulator in that fitting. Sounds like the previous owner might have just made a mistake installing it??

https://www.facebook.com/reel/1625021305077822?mibextid=rS40aB7S9Ucbxw6v There have been a few TikTok videos lately that I can't find now. Came across this.

Besides the libtards burning towns and tearing down statues....... 🙄

Kinda like a PVC system? Drawing vacuum on the engine while running.

They weren't overly strong and they tended to loose the rubber plugs up top for the shift rails, loose fluid over time and then it would eat itself. The shift forks were just another issue. They were not much different then the T5 that was in the mustangs. Just a bit easier to disassemble/assemble. I can do a toploader blindfolded but they just have a different sequence with all the tapered bearings.

We got good service from the truck. Yes, it had Zf5, as I put a clutch in it once all by myself. Ugh. Wrestling that big bastard around on a floor jack was not fun. Of course being a shop truck it just got beat to death by the time I sold it. I converted my 89f150 from AOd to the Mazda 5 spd. I hated that Aod. The bad thing with Mr5od was if you rested your hand on the shifter it would eat the shift forks. They were only aluminum and with only auto transmission fluid it did not take that kind of wear very well. The box I bought used was eaten up on 3-4 fork. I went through it and it worked good for the time I had it.

I have a younger pair living across the street from me. The one hasn't said more then "hello" when they moved in. The other, she's a diehard gearhead and we talk all the time. She calls my garage a clown shop, as she never knows what I'm going to drive out next. Lol. She likes all my toys. She's working on a 78 Camaro and it will be a nice cruiser. She has a couple guy friends that come to help. Talking with them a few weeks ago when they were all out in the driveway it comes to find out they know a lot of people I know. They both dress "normal" and wouldn't pick them out in a crowd.