Lmackattack

Thanks for posting the pics Thad. looks like a straight truck to build off of. I think I saw that truck on truck paper or truck trader?? that is pretty far to get it lots of $$$ that could be spent on restoring it. Im shure you can find another RS that is close to you for a little more that runs and can be driven home. I always tell people that im lucky I dont own a trailer because I would have lots of junk at the yard I would need to restore someday. I think your right Rob, 72-73 ish was the changeover year to the larger cabs. I like the small cabs just as much as they are simple but the extra few inches in the later cabs shure are nice when you are going to the truck shows with tools the girlfriend and the dog all in the same cab LOL I have seen Johns (bulldogbred) truck pull. He turned me on to truck pulling last year. That 300+ in his ride was pretty impressive for an older 2v motor. Cant wait to see his E7 400 pull this summer. He is right that some of these older motors have more grunt than the new elctronics do. I turned up my 2v this winter and hope to get some of these big cats at the next pull event.

I cant open the pics So I cant see its condition but I can tell you from experience that if the truck needs lots of work you will run in circles trying to restore it to orginal form. My first B needed so much work the I ended up geting another B model and used parts from both to make one good truck. If I did it all over again I would have found a truck that cost a little more but was in better condition. I love working on trucks but I just dont have deep pockets to do frame offs like the pros do. I got real lucky with my RS as it was a O/O truck and was maintained well over its life. I think it was only neglected for its last few years. It has been much more fun to build off a straight truck than to have to fight with other peoples hack jobs and temp fixes. I dont have my mack book in front of me but I think The 866 and 865 needed diffrent transmissions. one was a maxidyne and could use 5 gears the other needed more gears as it did not have a flat toru curve of the maxidyne. For some reason I always here of rod bearing problems with the older V8s? post a pic on here if you can I always like to see a nice looking RS

Thats exactly why I like to push start things its easy to drag something around to start it but you never know what going to happen when it comes to life LOL. I put a few scratches in the cross member doing it this way but I like my trucks to have a few war scars. makes them more fun to drive not worring about everything around you. I found why my new batt and starter was haveing an issue cranking. seams that the PTO idler gear that I took off another trans was not meshing like it should and it was binding. I took it off and she cranked over with a fresh charge on the batts. Whats the status on the engine? last I heard it was stuck or something? ever find the issue? Trent

the seat and my paints are fine however my friend got a real good look at the windshield. when the 4 feet slack in the chain ran out. LOL. I had a chain wraped around the rear crossmember and had the bucket over the frame to push it along. when it took off running I tried to keep up but she had a little to much unburnt fuel that needed to be burned off first LOL. I think the rear tires on the loader came off the ground LOL. I pulled it this way incase she was a runaway so I could stop it. after I got things back under control I lifted the tandems off the cround and went thry the gears. boy did that 711 sounded good wound up again Trent

do those bumpers fold down to be able to open the hood? I know the roo bars do with the pull of 2 pins. Trent

got the old B fired up today. Its been about 3 years sence I herd it bark. I think it got excited too as it almost pulled over the rubber tire loader I was running that was chained behind her when it fired up. My friend popped the cluch and mashed the pedal in a high gear, it blew a big black cloud and starrter running away faster than the maching LOL. he got it out of gear as the rpms came back down and all was good. Boy does it feel good to drive it again. I have a isse with the PTO gear and the clutch pedal adjustment but it looks like an easy fix? Trent

nice looking Rig!! going to build a model of it?

the 7 speed is a fast transmission (.60 overdrive? will have to check my books.) you likely will have slow rears so it wont be 2 fast. I think it was David that said that the fast drive train speed helps reduce stress and shock in the mud? The 7 speeds I have driven were all pretty good and the 2 low gears did help startup on a hill, at least a little better than the 2 stick 6 speeds

I have tinkered with my pump to flow a little more fuel. I noticed that the EGTs rise to 1000 fairly quick now. Thats ok because Im just bob tailing to shows and stuff. I dont think I could pull a long hill loaded as the EGTs will get to high. It is fun for bob tailing around and my Butt dyno tells me HP is up. From what I have learned from others is that If you want to properly get more HP you need more air when you add more fuel. Most newer high HP diesels are running hi boost to keep EGTs down and keep emissions in check. higher Boost will burn the extra fuel and keep EGTs down. the intercooler should be able to keep up for most adjustments but be carefull. Injector size may become a issue depending on the powere you want. my advice is to get a cheep, used slightly larger turbo and up the fuel flow a little. Then see where the EGTs settle on a pull. The extra boost from a larger turbo should be able to burn the extra fuel added and the injectors may be fine for the powere. As you know many of us dont have a dyno to prove our results and none of us will tell you its 100% safe. just be smart, make little adjustments AND WATCH YOUR GUAGES

looking good. dident you make a great looking green/white RD mack a few months ago? I havent seen many DM800s like that from my aera. lots of U models and DM600. I just won a R model kit on ebay yesterday and bought a RS700L resin hood. I plan to recreate my RS mack after I finish the Astrailian V8 Valuliner conversion kit that im working on. What kind of paint do you use? I started to use the model masters water base paint a few years back and love how easy it is to airbrush not to mention fix my mistakes

great stories guys. I can relate to the steering wheel breaking fingers. My RS has manual steering and I will never for get how fast that wheel moved the first time I slowly rolled over a curb!!!

find a real low gear and I bet it could that 600HP is for the big roads. I dought he used all 600 ponys to pull that more important how much weight was on the drives and what suspention did it have?? regardless its good to see a Mack in the News Trent

not shure if I read the post correctly but I think you will find some small issues trying to put later style interior parts in the early cabs. I know the rear wall is a few inches closer to the front so the headliner may not fit properly. door panels should fit fine and the Radio console should fit with no major modifacation. But I think your biggest issue is finding a full used good interior. I have been looking for a black interior for a year with little luck. No longer made and salvage yards want to sell the whole cab intact. Trent

Its diffrent for shure. not my sort of taste, but I truely can apreciate the vision (no pun intended) behind it.

wow! nice truck. Im shure your grandpa is proud of that machine. How long has he owned it?

Great news Rob! I remember the pics on the old BMT site when you started tearing it down. hope to see it at a truck show soon!! Trent

I think the later V8s were pretty good i.e E9 sieres I hear of bearing issues with the early versions 865 or 866 V8s My company I work for has a 440 V8 with 480,000 miles on it with out a rebuild. besides the basic stuff that wears out its been a good engine. It does have excess blow by now and will need a rebuild soon . The down fall with the v8 is that if it does break something . its likely big$$$ to fix. Alot of people will pull the tired V8 out and put a fresh 400HP E7 in its place. not my style but for saveings I can understand the reason.

The R model pumpers that I have seen had many diffrent engine options. Early R models could have had gas engines or diesel. Diesels were more common. 237,285,300,315,350 HP we likely the most commin installed engines. Transmissions could be automatic or manual 5 speeds. possible more manual gear boxes were offered but that would depend on what the buyer speced. I have seen off road mack fire trucks that were 4x4 but the 4x2 seam to be more common for city fire trucks . have seen many 6x4 tankers also. I have not seen a crew cab R but I have seen a pic of an open top R model fire truck. ask some of the guys in the Mack fire truck section of this site. those guys will know first hand what you are asking Trent

your likely correct HK LOL but I know a few of us here would be more than willing to stop by to take a Volvo sign down and put one of those large gold dog that dealerships have in its place. Trent

is the house for sale Doug? looks like it could be saved still? thanks for taking the pic and passing them along. Hopefully Mack H.Q can pull sometheng togeather Trent

thats the whole issue....make a truck simple and easy to drive and anyone can turn the steering wheel..including the speed racer type. I like to hammer down out on the big roads away from traffic. but I find myself relaxed in the city around traffic and stop lights. Hell, most of the time I just play the stop lights and pass that 600 hp pete at every green light LOL ... I love it when you are slowing down for a red light and you can hear the turbo spool of that big HP truck coming up the left side. he cuts in front of you, and still speeds to the red light. I change lanes and pass him as hes starting from 1st (or 5th lol )again.. its like clock work same style of driving but diffrent truck every light..

Barry started a thread on the old BMT site with girls and rigs.. we should start that thread again LOL Trent

over 16,000! for a plane equiped CH...WOW! I thought that these new trucks were all in the mid 15,000 range wet. I figure that with a full tank of fuel ( 86 more gallons of fuel, or 126 gallons total) I would add about 605 pounds. 15680 + 605 = 16,285 wet, guess thats not to bad. Trent

I asked this question on the ATHS site also I took the Dog out for a short run today and decided to go past the local gravel pit to get it weighed. weighed in at ...15,680 lbs the truck is basicly 100% stock and had about 40 gallons of fuel. heavy aftermarket add ons are 2 line wet kit 45 gal hyd oil steel tool box alum 1/2 fenders Truck is a "lightweight" version, Mack RS700"L" L = lightweight componets used? Is this an AVG weight, heavy,light??? Trent

Looking good Jeff!!! you have done a real nice restoration on her I think that tip turbine will work fine for you with no load. If temps do get hot just fab up a tube that runs to the front of the truck. would think outside air up front would be cooler? if you get a good run with her let us know what the EGTs get to. Trent