Lmackattack

my 285 Mack gets 5.5 loaded 6 empty. Drove out to NY and Back a few years back loaded one way (R model) and we got 6.5 avgMPG ...350 w/9speed 5.02 rears thats pretty good for me

LOOKS TO BE AROUND LATE 7Os EARLY 80s? ARE THOSE DM CABS? AGREED...VERY SAD!

Im in shock right now... Im not shure if its to radical or a great trend is started. I see a KB grill and fenders from trucks of that era. The headlighs look out of place but its a good start. I give IH big credit for trying something diffrent here. I think If mack could

Yes the "old school" mechanics pull both heads with the intake and exhaust on just take the turbo off and its a fairly straight forward job. just bulky.

Thats a hortan fan clutch. around $130 dollars from the mack dealer. They work like this. When the engine is started (cold start) the clutch should be "released" alowing the engine to warm up, you may see the fan spin ,this is ok as its drag from the spinning water pump alows it to spin slowly. when your engine temp gets above "X" temp (mostlikely around 195-200) the thurmo coil enguages the clutch to spin the fan. If the truck is getting hot in this cold weather i would think you have a diffrent issue. I can run a winter front and pull a load in 15 deg temps and the fan might kick on a few times on the highway. local roads the fan stays off. If the winter front is off the fan wont turn on all day... check the thurmostat, guage and sending unit to make shure those are not issues.... Trent

Well i buy alot of mack parts just for the support and ease of getting the right stuff. However I would rather make myself an exhaust for $150-$200 than pay volvo $800 for one pipe. You say your not mush of a Wrench so that doesent help you much LOL... I made my own dual exhaust with some crome 90' elbos "t" pipe and then used aluminized steel from under the truck to the turbo. only flex pipe I have is a 1" sectio from the turbo down pipe to the long pipe to the stacks. only reason I used it was because I was in a hurry. most expencive parts were the $90 mufflers. I still plan on making a down pipe from the turbo to connect to the rest of the system elimanating the one flex joint. Start getting good at making your own stuff. Volvo does not want to support the older dogs and they will keep on keeping on with that attitude.

welcome to the site! Im from your aera as well..in the far NW suberbs of chicago... Volo aera to be exact.. post a photo of the rig and I will look out for you. Trent

WHAT YEAR R MODEL there are a few diffrent latches throught the years of production. if its a mid 70s-80s it likly has the same striker as mine.. You just need to move the striker up a hair and angle it around untill the door shuts right. also the latch in the door may be worn? I have an issue with my pass side door and its a Real PITA to adjust. every year I have to move it around to get it back to normal. Trent

for a quick fix weld a long bolt to it, cut the head of the bolt off and it will hold just fine. The straps are pricy from mack. I am making 4 straps for the b model for just about the same cost of 1 from a dealer.

I like the green and red paint also. Just freshin it up and she is all good to go. And with spoke rims you have the whole classic mack look in the bag. I also noticed you have the good looking("oldstyle") Sun visor that just about completes everything I would like in a classic R model.

Hey Hotrod Your avitar would make a great set of mudflaps for my mack!!! Its only a 2 stick 6 speed, does that still count?? LOL

also most non air ride cabs used radiator "x" braces from the cowl to the rad top. air ride cabs did not have "x" brace as the rad had braces that bolted to the frame.

the pulling truck we built last summer had the same problem. almost sounded like a rod nock as it would come and go under accell and decell we dropped the oil pan and took the rockers off and found everything was ok. then one day it just stopped knocking LOL..it may have been a stuck lifter but we never found the issue? so far the engine has made 2 sled pull events and ran down the road at 2500RPM and has not missed a beat??

FJH what year did the R600 get a slightly longer hood? (1" or 2" more ?) was around early 80s? i think? i want to say thats when the air to air 300 came out they made the hood a tad longer for the intercooler fitment. iiiii

FJH set me up real good with my 285 mack, He explained how to get my little 6 cly to 25-28psi on good pulls and keep my egts from gong past 1100deg. this is without a front mout air to air (just an charge cooler) if that E9 cant get above 23 psi it may be the reason it has no balls? i have only driven a few V8 macks but i do know that in high range (gearbox)you should keep up with newer trucks with slightly more HP. As FJH said check the linkage. One of the superliners i drove had that junk air throttel and it always gave trouble the older and longer you drove it. is it possible that when the pushrods jumped that the engine hyd locked on a cyl? it may have blown out the Head gasket on that cyl and is now causing some other issue.if the valves were closed and fuel was being injected that can be a problem?? hope you find the problem. Trent

is the timeing off? i believe the maxidynes had diffrent timeing than the econdynes? as far as not walking off the line easy, it could be a few diffrent things... low speed idle set to low, wrong timeing(low power) problem in the gov box... Maxidynes made more TQ down low so this was lost when you switched parts around to a 350 set up. the 350s make there power around 1450RPM and up they tend to fall on there face around 1350RPM. if you say you have power loss up top and down low than i susspect timeing issues... that is if all your 350 parts are correct and your fuel and filters are fresh.

WOW, he shuts down early and just lets her slide in LOL!!!

the lines should break free with a 3/4? open end wrench. Its a tight spot but you can get in there.

the foot valve would be my 1st guess

WTF Volvo!?

I belive the econodynes had higher HP outputs but lower TQ rateings. they needed more gears to pull you as the power band was up top and not as wide as the maxidynes. I think they came in low rpm models and standard 2100 versions and they claim that they were better on fuel.? trentdsf

if you have the same pump it should.. be carefull as the 237 does not have any means to cool the intake air!!! watch the EGT guage closely!