| Author | Message | ||
     Corey Shuman (One_bad_rover) Member Username: One_bad_rover Post Number: 103 Registered: 09-2002 |
Hey all, Curiousity has gotten the better of me and Im curious as to whether the 4.0 disco motor is belt or chain driven and more importantly is the belt or chain something that should be maintqined. I've got close to 115k and most things are original so Im just curious. Thanks!!! | ||
| Will Bobbitt (Rkores) Senior Member Username: Rkores Post Number: 256 Registered: 09-2002 |
It is has a chain on it. Unless you can tell something is definitely wrong, the only way to tell is to take it apart and see what it looks like. Will | ||
| Brian Friend (Brianfriend) Senior Member Username: Brianfriend Post Number: 666 Registered: 09-2002 |
Mine uses drive shafts.  | ||
| Milan (Milan) Member Username: Milan Post Number: 189 Registered: 10-2002 |
You have driveshafts in your motor? | ||
| Brian Friend (Brianfriend) Senior Member Username: Brianfriend Post Number: 667 Registered: 09-2002 |
No Milan....I have an internal combustion engine. My heater fan has a motor | ||
| Corey Shuman (One_bad_rover) Member Username: One_bad_rover Post Number: 104 Registered: 09-2002 |
HAH! Okay, my ENGINE, :D is the chain a maintainance item?? THanks!! (smartasses) | ||
| Brian Friend (Brianfriend) Senior Member Username: Brianfriend Post Number: 669 Registered: 09-2002 |
Corey, I have never heard of anyone have any problems with a timing chain in a 4.0. | ||
| Milan (Milan) Member Username: Milan Post Number: 190 Registered: 10-2002 |
He said motor, you said driveshafts. FWIW, my 4.0L engine has about the same power as a heater motor. Neither has issues with belts or chains. LOL | ||
| Brian Friend (Brianfriend) Senior Member Username: Brianfriend Post Number: 670 Registered: 09-2002 |
Cory, Did you get everything out of your post that you intended to? Sorry for all the sarcasim. | ||
| Joe M. (Little_joe) Member Username: Little_joe Post Number: 101 Registered: 11-2002 |
Is the 4.0 interference or non-interference? Thanks. joe | ||
| Corey Shuman (One_bad_rover) Member Username: One_bad_rover Post Number: 105 Registered: 09-2002 |
wow, that was all over the place but I think if I understood right I shouldnt have to worry about any timing chain maintainance. I just did a belt on the bimmer at which point it occured to me that the ole rover may need something as well...thanks for the help..and I dont mind the sarcasm at all.... ;) | ||
| gp (Garrett) Senior Member Username: Garrett Post Number: 2009 Registered: 10-2001 |
the ol rover always needs something. who wants a boring honda that never breaks or does not need the attention of a rover. i like all the pretty color lights on my dash. keeps me from having bad habits!! | ||
| Paul T. Schram (Paulschram) Senior Member Username: Paulschram Post Number: 1298 Registered: 02-2002 |
OK guys, Rover cam drivetrains are on borrowed time any time they exceed 150K miles. There are many instances documented here and elsewhere of cam gears disintegrating and the engine not being worth rebuilding. Those that take the time to replace the chain, also replace both gears. IIRC the cam gear has nylon teeth that wear and eventually break off (just like the old SBCs). There are aftermarket double roller kits available for around $100. While the job is time consuming, it is not that hard, but one must remove the entire front of the engine to gain access. It can be done without removing the radiator, but I would prefer to pull the crank gear without anything in the path. Peace, Paul | ||
| Corey Shuman (One_bad_rover) Member Username: One_bad_rover Post Number: 108 Registered: 09-2002 |
Paul, So is the roller kit a replacement for the cam gear? If so where did you find the kit, I'd just rather be preventative that have to replace the whole freakin motor.(jeez- how could I live without all the dirt and oil on it, it would be like losing a friend) Thanks for the help!!! | ||
| Paul T. Schram (Paulschram) Senior Member Username: Paulschram Post Number: 1301 Registered: 02-2002 |
Corey: It is the same kit as for the Buick motors, Summit has one, as well as Jeg's. Given some time, I can provide part numbers. The chain that is stock is not a true roller chain and the correct name escapes me at the moment, but the double roller has two rows of chain like a biciycle chain and is much more robust than the OEM POS. Be aware that removal of the crankshaft gear (replacement of both gears is necessary if one wishes to go with the double roller setup) can be very difficult as it is a tight fit to begin with, compounded by the many miles of stress placed upon it in operation. Hence my comment about tearing down further to provide adequate clearance. Peace, Paul | ||
| Joe Blanchard (Joeblanch) New Member Username: Joeblanch Post Number: 37 Registered: 01-2003 |
Will the double roller kits clear the timing covers of the 96 and above 4.0? Or are there no clearance issues for any of them? (Distrib and coil versions) I was under the assumption that the double roller was only available for pre-1996 Rovers. Thanks, Joe | ||
| Paul T. Schram (Paulschram) Senior Member Username: Paulschram Post Number: 1302 Registered: 02-2002 |
The Edelbrock part number is 7828. I don't know right now if it will fit the GEMS engines. If I get a chance (yeah, right Paul), I'll try a GEMS front cover on an older block with a double roller chain-it will almost certainly be after the weekend when I might get a chance. I'm gonna go out on a limb and say it will fit as the cover has to cover the original geartrain and the double roller has nearly the same dimensions, if not identical-think about it for a second, the cam has to line up with the distributor... Good thing there are a couple of Rover engines lying around in varying stages of disrepair! |
