Jake brakes 8v71

[luvrbus]

I just will not cut the tailgate and install the hump on the back if the owners want Jake's on a GM from me they cut the own deck lid

[chessie4905]

   You do not have to cut the tailgate on a 4905 and equiv models. Just remove molding in center and install a box shaped piece of aluminum. I'm surprised that R&M fiberglass doesn't make a nice bulged insert piece for it. Not sure if the center panel on an 06 tailgate is removable.

[TomC]

On my AMGeneral, I removed the valve cover bulge in the engine door and just left the valve cover exposed. You'll know it's me since I painted a face on the valve cover (LOL)

[pabusnut]

Clifford,

The only thing holding my back door together any more is the sheet metal    Since it needs fixed anyway, I will put a "fashionable" bump out in the center section.  I have a guy working for me right now that builds race cars(when he is not building aircraft parking in a "hostile environment") who is going to fix my door for me.  He has several ideas that could start a whole new trend in engine door customization! 

Steve Toomey
PAbusnut

[wagwar]

Get the jakes. For steep grades, RJ is right on. You can always turn them off. Once you have on an automatic, you'll wonder how you got along without them. 6% grades are manageable w/o, but 2 lanes at 8% and 10% downhill with curves as you will see out east, are a different story.

[luvrbus]

  Good grief some of the old 8v71's in the old buses don't even have enough oil pressure to activate Jakes

[chessie4905]

   Maybe these books may be useful to some.
http://www.mountaindirectory.com/

Some good posts on grades here:   

http://www.thetruckersreport.com/truckingindustryforum/experienced-truckers-advice/88646-steepest-grade-you-ever-pulled-went.html

[luvrbus]

You guys with a auto and Jakes on a 2 stroke try highway 125 in Pennsylvania I forgot about that jewel it's about the same as 89A here in AZ  

[Purplewillie]

8v71 v730 allison with jakes...
Bus had them when we bought it. We are in mountains any direction we travel from home base. Could easily go with out jakes, but has to be easier on the brake shoes. I love the sound too,
was double awesome when we were straight piped;D
Mark
Ps we run delcac 1240 oil
Delo 400 in the auto
And our antifreeze is green

What number of replys are we up to?

[chessie4905]

Route 125


East section of the Mountain Directory East:

Pennsylvania highway 125
(between Shamokin and Good Spring, PA.)

Large vehicles may want to avoid this 18 mile section of road. It crosses four mountains and includes numerous 15 mph hairpin turns and many more 20 and 25 mph curves. Regardless of your direction of travel you will have to climb and descend some very steep hills.  Much of the grade is 7 to 9% but there are numerous sections that must be 12% or more, some lasting almost a mile.  Brake shoes don't have enough time to cool much between descents.

[Beesme]

That's what I'm trying to figure out . Ino we only have speed bumps in the east . But I have been on 125 in pa with bus and common sense has prevailed . We have mtns no bull in n.h. That are 15% plus for miles and 2 lanes even 1 lane and turns that r 180 deg  quite the pucker factor haha.You pray no ones coming! When u come across 302 other side of Franconia notch u know what I'm sayin .or across the Kanc coming into lincoln .I guess if I can get up them I can get down them . Time will tell . We have highest peaks in the east ! Maybe just lil bumps but that's prob why they have the runaway areas for when u lose brakes on the bumps haha anyway thanks for all the tips . I like lvrbus thoughts . I'm gonna try wat they did for so many yrs .But my 8v71 does have 65 lbs at idle .so I'm sure they would sound great! Lol I think I will keep running these bumps for a few thousand more miles than try the big bumps out west  thanks all !

[luvrbus]

Not to be a smart @$# with 65 psi at idle on a hot 8v71 I would be looking for another gauge

[Beesme]

You think ? Maybe I will but it does go to zero and my gauge out back is bout same. I do run straight 40 delo 100 and the motor is fresh . I had multi grade in it before and she only had 30 psi I didn't know any better I was told run the multi delo  u think both gauges are bad ? If not is there a problem or something I need to look at? Uno as to why the high pressure. She sure runs awesome

[luvrbus]

You never need to worry about a 8V71 having to much oil pressure on a old DD 10 to 15 lbs at idle and around 50 at 1800 rpm when hot is about the norm for a good 8V71

[eagle19952]

You never need to worry about a 8V71 having to much oil pressure on a old DD 10 to 15 lbs at idle and around 50 at 1800 rpm when hot is about the norm for a good 8V71

true story....