Gorilla

Im in melbournes western side (sunbury) so closest place to me is cmv and so far they have been shocking to deal with including promising they would call back about something and never doing it, refusing to sell me a repair manual and the prices, oh the prices......it has been cheaper to buy in the USA and pay the crazy air freight prices and most of the time quicker!!! (have a ch mack that i was building during lockdown to keep my sanity but then decided i hate tipper work so she will be up for sale soon).

Hey Everybody, Today i drove my mack quantum for the first time and was surprised at how high it was revving in top gear (1700rpm). It has 4.56 eaton diffs and a .73 overdrive. I was looking at peoples opinions given it has both .86 and .73 overdrives what would your thoughts be for me to change the gearing on the diffs to 3.73? In 18th gear (.73 overdrive) it will give me 1383 rpm and in 17th gear (.86 overdrive) it will give me 1630rpm and in 16th gear (1:1) it will give me 1895rpm This is all calculated at the maximum allowed speed in australia for trucks which is 100km/hr The way i see it is on a nice level road it will give me the best fuel efficiency as it will be thick in the maximum torque range. On inclines i can split it to 17th gear which will kick me near the maximum hp and still within beefy torque values Im tossing up doing this as i want to maximise my fuel efficiency and i am going to get the diffs sorted as i want to fit lockers and cross locks anyway so essentially two birds one stone. Any thoughts? Thanking you in advance, Chris

So far from what ive gathered its an interesting beast, all mechanicals seem to be mack BUT everything in the cabin is Renault including the badge on the steering wheel. Interestingly she has a 24 volt starter!!!! yet 1/2 the stuff on the electric stuff is 12v and half is 24v (done a lot of reading), and tomorrow ill know more as my cb, uhf and cd stacker arent working so im going balls deep into figuring out the electric gremlins (on top of finding the stacker which has to be within 600mm of the controller thats on the dash yet the previous owner didnt even know existed hahaha). Also interesting it has a really high end ISRI seat thats the best ive seen and with no evident long term wear but obvious its the original model.

Here Is a pic i took today in my driveway and another from the yard it was parked in , ill provide more pictures tomorrow but its night right now. Also found all the original paperwork for the truck including its build sheets and all books, seems i have to do some more homework. Also regarding the rails, i also have a mack CH with a ea7 410hp and i absolutely adore it but its a tipper and i absolutely hate the tipper (and i hate the tipper industry in australia thus selling it) but alas unless im mistaken they look to be straight rails on the quantum. Ill lift the body tomorrow and check (and yes ill provide pictures ).

Hi Everybody, Just purchased a really nice low mileage (relatively speaking as it has 580,000km) Mack Quantum which means i dont have to tell you im in Australia Goes really well with its 470hp ea7 and 18 speed Road ranger And the Renault Cabin really gives a great ride. I am under the impression this is essentially a Mack CH with a Renault Premium cabin plopped on top of it as all the mechanicals look Mack. I thought all 6x4 trucks had crosslocks but yesterday my heart dropped when i tried to get into my driveway and i couldnt find a button/switch/lever. Am i missing something? Were some 6x4 macks ordered without any form of crosslock? How can i check if it has it? If it does not have one then can i retrofit one? The previous owner said the motor was rebuilt 40,000km ago as it hydro locked up...... is this a thing to watch of for the e7/ea7? ( i suspect maybe their mechanic took them for a ride and didnt rebuild anything as im not seeing a rebuilt motor just a healthy one), Also is there anywhere i can get a repair manual for the Mack Quantum? Mack in Australia are not nice to deal with and extremely unhelpful (wont sell me the mechanic repair manual for a mack as "im not mechanic" hahaha )and i hope to never deal with them for anything ever. BTW i know i know ill cop all the flak as its "not a real mack" but hey its more Mack then all the new Volvos with Mack badges hahahah Thanking you guys in advance, Chris