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MACKS

Pedigreed Bulldog
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Everything posted by MACKS

  1. MACKS
    Rob, you can go with straight pipes if you want,I love the look of the crome straight pipes but driving all day the noise gets to be annoying especially in a dump truck with all the stop and go and accelerating thru the gears thats why i was looking at the dynaflex it's got that nice clean look of a straight pipe,but I can't find any info on the actual sound reduction,I might have to take a chance and order one and hope for the best.
  2. MACKS
    I did a search on line and read up on them a little,they state on there web site that you can only use them if you have duel exhaust so I guess back pressure is a problem with single exhaust.
  3. MACKS
    Thanks for the info,but what is a qp internal muffler,never heard of them,do they add a lot of back pressure,thats what Im looking for not to loud.Also could you tell me how much they cost.Thanks
  4. MACKS
    Doe's anyone here have any experience with dynaflex mufflers,I'd like to hear your thoughts on the sound reduction of these mufflers as compared to a straight pipe,I'm running a straight single 5 inch pipe on my 96 cll only because there is not enough room for a regular muffler between the cab and the dump body and I'm not real crazy about installing anything under to cab.Thanks in advance for any help.
  5. MACKS
    Nice,are they gonna add a third axle or did someone order it as a ten wheeler.
  6. MACKS
    Ok I just checked in my Mack manual for my 83 RD and it says to use EO-K single or multi grade engine oil,it doesn't give any other options.
  7. MACKS
    I can't answer that question but when I bought my first truck many years ago a 1970 DM800 the owner told me to use motor oil for the power steering,the guy owned a pretty big truck Co so I figured he knew what he was talking about,never, had a problem with it,and never replaced the pump, I ran that truck for 15 years. So I still use it today in all my trucks.
  8. MACKS
    Do you have the belt drive pump with the round filter in it,if so that filter can be cleaned in gas or solvent,try cleaning it before you do anything else,I always used motor oil in the power steering.
  9. MACKS
    First you have to remember the trans gears are always spinning the faster the truck is going the faster the gears are spinning,to down shift you need to raise the rpm of the engine to match the tran speed,when you get it just right the gears will mesh together. Practice makes perfect
  10. MACKS
    Niceguy,please don't be offended by my previous post ,I was just stating a fact .
  11. MACKS
    You guys kill me,you can't get blood from a stone,leave it alone if you want more power buy a bigger motor.The 237 is a sweet running motor and maybe the best motor mack ever built,thats just my opinion and I ran a 237 for a number of years and was very happy with it's performance.
  12. MACKS
    You crack me up
  13. MACKS
    I prefer a 4 valve,I think they run much smother and quieter than a 2 valve,maybe just because they breathe better,Just my opinion.
  14. MACKS
    Sounds like you got a good deal for 200 bucks and it's most likely better than a new one,good luck with it.
  15. MACKS
    Come on L put up a link
  16. MACKS
    Maybe it was ten years ago,time flies when you having fun,anyway great idea to have it rebult with bushing put in it,I think if they were made from the get go with bushings they would last a lot longer,good luck and let us all know how it turns out.
  17. MACKS
    You will need to adjust the valves in fireing order with each cyl on top dead center,once you get tdc for number one then you can mark out the balancer for the rest.
  18. MACKS
    I own a 90 rd ten wheel dump with an allison 5 speed auto,I have to say it's very reliable and so easy to drive,it also has awesome power off road but not very good on fuel,I would love to test drive a new truck with big HP and an auto,that being said I still love a mack 12 speed witch I drive every day,in my mind the best tranny ever built by mack or any body else.
  19. MACKS
    That switch has nothing to do with an engin brake,it limits or shuts off the air to the front brakes so when in the slippery position your front brakes wont work,this prevents them from locking up on wet or icey roads,are you sure you have an engine brake should be a wire going to the top of each valve cover,not sure about that other thing on the motor maybe some kind of temp senser,do you have shutters on the radiator.
  20. MACKS
    Maybe you can spray some sound deading paint on the drive shaft,like the stuff they sell in the auto parts stores or some say the pick up bed liner spray paint works good to deadin sound.
  21. MACKS
    HotRod,I bought mine at Long Island truck parts in medford, long island, NY,the phone number is 631 736 3434 and e-mail is info@litruckparts.com back then they had them in stock,maybe they still have one laying around or a good used one since they rebuld trannys there.If you call them ask for Rob,Good Luck
  22. MACKS
    I replased mine about eight years ago,I'm pretty sure the rails were about a hundred apiece,not sure about the bracket but it was cheaper than the rails,I have to say it was money well spent.
  23. MACKS
    Used to happen all the time on my dm,I broke down and bought new shift rails and the alluminum housing,the housing was the thing that worn out,the holes were oblong,also bought a new shifter,you just can't belive the difference in the way it shifted,but that is not a cheap way out.In the mean time if your carefull the way you shift it won't jam up,do not move the shifter diagonally pull it strait foward or strait back to nutural and then to the left or right in a straight line if you know what I mean.Good Luck
  24. MACKS
    You might wanna give e-bay a shot,I have picked up quite a few pipes,elbows and clamps for really cheap price.
  25. MACKS
    I think you only have to pay the sales tax at the dmv when you regester the the truck,if your friend does the deal he can send for tital in his name and then sign it over to you,when you regester the truck you pay the sales tax.

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