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    1. Introduction Forum

      Welcome to the New BigMackTrucks.com Forums! Take a minute to create a new post here and introduce yourself. Tell us a little about yourself and your passion for old iron!

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    2. Truck Stories

      This is a forum for you to tell us about your truck's history! Every old truck has some type of story behind it and we would love to hear about it! Be sure to include photos if possible...

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  2. General Discussions

    1. Antique and Classic Mack Trucks General Discussion

      This is where you can talk about anything related to antique or classic trucks! If your topic is something specific, try to use the correct forum below.

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    2. Modern Mack Truck General Discussion

      This forum is for general discussions about modern Mack Trucks! Granite, Vision, Rawhide, Pinnacle...etc. Specific topics can be posted in the forums below.

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    3. Mack Dealer & Corporate Forum

      This forum is for Mack Dealers and Mack Corporate personnel only. If you are a Mack Dealer, or Mack Employee, PM the forum moderator below with your name and dealer code and you will be moved to the Dealer Group and be able to participate in this forum.

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    4. Mack Truck Q & A

      This forum is for pressing questions concerning Mack Trucks...emergency maintenance questions, pre-purchase questions, etc...answers can be rated by users and the higest rated answers will show first!

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    5. Mack on the Silver Screen

      This forum is for discussing various TV shows, commercials, music videos, songs and movies that had Mack Trucks in them!

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    6. Mack Scale Model and Diecast Corner

      All discussions about Mack scale model building and diecast models go here!

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  3. Specific Topic Forums for Antique & Modern Trucks

    1. Engine and Transmission

      This forum is for engine and transmission related topics

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    2. Driveline and Suspension

      This forum is for driveline, carrier, front and rear axle, steering and suspension topics

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    3. Air Systems and Brakes

      This forum is for Air System and Brake related topics

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    4. Electrical, Electronics and Lighting

      This forum is for electrical, lighting and mobile electronics topics

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    5. Exterior, Cab, Accessories and Detailing

      This forum is for topics about exterior, cab, paint, trim, bumpers, emblems, visors and also topics about keeping that truck looking its best!

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    6. Fire Apparatus

      Forum for discussions about Fire trucks and specialized fire fighting equipment.

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  4. Odds and Ends

    1. Odds and Ends

      This forum is for non-truck related topics. Talk about interesting web sites, current events, tell jokes, post funny photos...etc.

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    2. Trucking News

      News and information from the entire trucking industry

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    3. Other Truck Makes

      This is the place to show off all your other trucks that are not Macks. They can be antique or modern trucks.

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    4. Tractors and Equipment

      This forum is for you to talk about Farm Tractors and other misc. equipment such as trailers, dozers etc.

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  5. Market Place

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    3. Feedback Forum

      Please leave feedback for other members you have done business with here. This will help members trust (or not trust) other members. Please be professional with your remarks...good or bad.

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    4. Transportation Board

      This forum is for posting and finding transportation opportunities for your antique hobby trucks and parts around the country. Please keep rates reasonable when posting a route...

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    5. Watt's Truck Center   (233,730 visits to this link)

      Click here to visit the Watt's Truck Center Home Page featuring The B-Model Store and tons of other parts for Antique and Classic Mack Trucks including R-Models, Super-Liners, DM's and all current models!

    6. Product Announcements & Group Buys

      This is the forum where we will post new product announcements and Group Buy Information from the B-Model Store! You can discuss them and/or ask any questions you may have here.

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  6. Shows and Events

    1. Truck Shows and Events

      This forum is for topics about truck shows and other events of interest.

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  7. Site Related

    1. Site Related Topics

      This forum is for BMT related comments, suggestions or problems.

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    2. BMT Wiki Support Topics

      This forum will hold the support topics created from the Wiki System.

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    3. Test Forum

      This is the place to practice posting photos or testing code. Topics may be removed at any time...

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  8. Club Forums

    1. Mack Trucks Memorabilia Collectors Club Topics

      This club page is for all Mack Memorabilia discussions

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  • Latest Posts

    • Geoff Weeks
      wrist pin bushings.

      By Geoff Weeks · Posted

      I got 1.3m out of original build on an 855 Cummins. The rest is hard to say as they were all overhauled at some point before I got them.  At 1.3m it had no problem running, just a problem keeping oil off the outside, it leaked from just about every gasket. I ended up doing an out of chassie overhaul on it. ($1500 in parts). AFAIK it is still running today.
    • 07cl733
      wrist pin bushings.

      By 07cl733 · Posted

      It has definitely been rebuilt somewhere in the past and I have put head gaskets in it once before, also. I didnt realize "in spec" wasn't necessarily good enough for the liner protrusion, so I just bolted it back together with new gaskets. I got over 200k more miles out of it for $500 and my labor.  And I totally agree with Joey Mack, these things are tough! And I'd like to keep this old dog barking a while longer. If this truck were what you got when you bought a new one today, I'd be making payments. 
    • Geoff Weeks
      wrist pin bushings.

      By Geoff Weeks · Posted

      So you are saying it has been apart before? Still that isn't all a bad thing. things replaced before they cause more damage.
    • Joey Mack
      wrist pin bushings.

      By Joey Mack · Posted

      I'm telling you  The mack engine is a tough S.O.B.   
    • 07cl733
      wrist pin bushings.

      By 07cl733 · Posted

      I think this motor is a testament to what you are saying Geoff. I found 3 different kinds of lifters and the connecting rods aren't all the same either. I've felt the rings have been sticking since I started running it and pulling a couple off has proved that true. I still feel its been a good motor that pulls strong and makes good fuel mileage. 
    • Geoff Weeks
      wrist pin bushings.

      By Geoff Weeks · Posted

      Like Joey, I would oil the bushing and push the pin through without the piston then see how much if any "wiggle" the pin has. I had a job that required me to "break all the rules" of engine building. I found that you can get years of good results with used parts, even those swapped from another used engine. Ideal, no, but it taught me that perfection can be a bad thing just as wear can. I have pulled dry liners out of one block to be inserted into another. I have replaced broken valve springs caused by excessively worn valve guide, on a hot engine on the side of the road, to have it go a few more year before the head of the valve dropped. The repair was only supposed to last the "season" and the head was supposed to come off. Promises made but not kept by the owner.
    • Joey Mack
      wrist pin bushings.

      By Joey Mack · Posted

      sounds like you are on  a good path..  I expect you to be pleased with the end result as long as you stay diligent..   
    • 07cl733
      wrist pin bushings.

      By 07cl733 · Posted

      Thanks guys! I do need this truck to work, but the reality is it has almost 2 mil on the chassis and another 250k would be a pretty good ride in my line of trucking. Your words make good sense. I'm going to think on it a bit and weigh my options. This already turned out to be more involved and expensive than hoped and I do need to get back on the road. The motor ran good with good oil pressure before this, a blown head gasket started me down this rabbit hole. Low liners lead to new liners, bearings and pulling the camshaft, which turned out to be bad and I'm trying to get the right balance of getting a reliable truck and not going broke. 

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  • Recent Status Updates

    • Joey Mack

      Joey Mack

      Well Artemis 2 is doing great. Pray for them to have a safe return to Earth...
      · 0 replies
    • TJ Lincoln

      TJ Lincoln  »  A Hobgood

      This is the current condition of my 47 EE project. The rebuilt EN271 is out and we are in the process of checking the fit of a big block Ford. It is the same truck that’s in my thumbnail photo taken a few years ago. I have managed to acquire all the new rubber cab seals and many are installed. I have a painless harness as well. 

      That engine and trans are on a pallet and probably weigh around 900. I believe the clutch is new and the trans was gone through. 
      Louisiana is a fair distance from the middle of Washington!
      That said, all the cab rubber body parts had to come from Massachusetts and it took over 3 grand for all the window, door, cowel, fender and more pieces to get everything. I found some parts back east but they are not cheap.  
       



      · 0 replies
    • mowerman

      mowerman  »  1Macktrk

      Hey, welcome my board and have a swinging time… bob
      · 0 replies
    • Lmackattack

      Lmackattack

      HO HO HO

      · 0 replies
    • the_IRFmack

      the_IRFmack

      - I double sticked and old Mack to feed a stone crusher in 12 and 14 hour shifts six days a week all summer to pay for my chemistry degree.
      - Because I wanted to sleep for 1 min and 26 seconds each trip out of the quarry at the crusher's vibratory dump box at the top the quarry during those 12 hour shifts, I bulled the old MACK up long 20 degree and sometimes steeper grades.
      - THAT meant that I split each gear 1, 2, 3 after coming out of boggy low.
      - All I did was rev to the right engine note, reach my left arm down through the steering wheel to hold the curve I was on or hold the truck's path steady; slip out of 1st, throw the 2nd stick high into low and slip into 2nd gear... rev to the right engine pitch, slip to high.
      - Then when it was time, reach through the wheel again, slip high to low and 2nd to 3rd {if I correctly remember 60 years ago}.
      - The Igneous rocks were too heavy and the grade too steep for me to ever get into 3rd high.
      - The crusher team were the mechanics for everything and had replaced the old Mack's tranny gears because they had been ground too much. - - They later told me they didn't believe me when I told them I slipped all my shifts because the gears showed no wear.
      - Except for start and stop; Not once did I use the clutch because that made my leg ache too much after an hour or so.
      - I slipped all my standard 4 speed shift vehicles all my life...just to be with the music of the engine and car or truck.
      · 0 replies

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