Originally Posted by adamanderr
does any one have this experience with their 9 liter. its an b5 thomas body 32 footer witha nine liter ihc and an AT545. i used to have a 5.57 rear end and it was dead slow so i put in a 4.44 and it still cant do over 50 on flat ground 2800 rpm ( max safe rpm ive been told by many bus mechanics). its an absolute old dog on ANY hill. only has 185K on the engine and has been well cared for. whos got a nine liter and what do yall think. it took me a week to drive 2000 miles at an average highway speed of 45 mph. at 7.5 mpg.....??????????????????
it all depends on how WELL the vehicle was maintined for those 185K miles. A simple compression check will tell you alot.
it may have enough compression to start and run but be blowing most of your air and fuel right by those tired olde rings and valves.
FLEET maintained is a joke...especially when it comes to buses. Tractor trailer "fleet maintined" is a joke too. They know MONTHS in advance when they are going to sh_tcan some vehicle and dont put a dime in them. It's a business for them, not a dream or hobby and its a cuthtroat job too.
To do an "In Frame" , not removing the engine from the vehicle, is one definite and doable option. yank the head and send it out to be rebuilt. Drop the pan and remove the pistons and re-ring them. While doing so, check the cylinders for straightness.
If you truly have a 9 liter engine, you should be smoking up those hills.
Commercial semi's hauling 55K weight have only one litre more than your engine.
Industrial Diesel Inc in Fort Worth, Texas www.industrialdiesel.net
1800-323-3659 is a very inexpensive and reliable source for all diesel engine parts.
Get yourself the mechanix guide for that particular engine. A GOOD torque wrench and "skin" that thing yourself.
Good tool sets are available on ebay for a song compared to new cost.