| Author | Message | ||
     Eric Ratermann (Ericrat) Member Username: Ericrat Post Number: 54 Registered: 08-2002 |
I have picked up a new whine and am afraid it is the timing chain complaining about it's hard life. In the past, on distributor motors, I would turn the crank and watch for slop in the rotor as a pretty good indicator of a worn out timing chain. You would get, maybe and 1/8 of a turn before the rotor would start to move when they were going bad. First, can I get confirmation that this is a nylon cam gear? Second, if YES, is there as steel replacement? The factory parts aren't too bad, but I hate to put plastic back in. Is anyone aware of an aftermarket option? I figured I should do and oil pump as long as it is off, is it really over $400 for an oil pump or do I have the wrong part #? I am at about 150,000 miles. | ||
| Bill Bettridge (Billb) Dweb Lounge Member Username: Billb Post Number: 1115 Registered: 02-2002 |
You should be able to use a buick timing chain/gear set - I know you can with the dist. motors for sure, but am not 100% certain with the GEMS. Oil pump is expensive for the GEMS motors because it is integral with the whole front cover - you are actually buying that entire cover, not just the pump. Bill | ||
| Geoff 93 RRC (Geoff) Member Username: Geoff Post Number: 106 Registered: 11-2002 |
Check www.rpiv8.com for info. Might want to replace cam/lifters while you are at it. | ||
| Ron Brown (Ron) Senior Member Username: Ron Post Number: 488 Registered: 04-2001 |
The edelbrock chain can be modified to fit GEMS. At your mileage I would personally just wait until it blows (if ever) or if you have the cover off for whatever reason. I have never heard a rover timing chain whine. Ron Ron | ||
| Eric Ratermann (Ericrat) Member Username: Ericrat Post Number: 55 Registered: 08-2002 |
That makes me worry more! I wonder what that damn noise is. It is engine rpm based not speed based. It sounds very similar to tranfer case noise, sort of a gear whine sort of thing. I suppose I should get some louder tires, that'll take care of the noise. I don't see an Edelbrock that looks right to me, It is the 215 buick motor correct? http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=3867&prmenbr=361 Cloyes list one however. Can anyone confirm or deny the stocker has nylon covered teeth? Thanks! | ||
| Bill Bettridge (Billb) Dweb Lounge Member Username: Billb Post Number: 1120 Registered: 02-2002 |
Yes - stock is a nylon gear Bill | ||
| Chris Browne (Chris_browne) Senior Member Username: Chris_browne Post Number: 358 Registered: 02-2003 |
I agree never heard of timing chain whine...alternator bearing whine, waterpump whine, viscous, Owner whine, pocketbook scream.....those come with rovers too | ||
| J E Robison Service Co (Robisonservice) Member Username: Robisonservice Post Number: 113 Registered: 10-2002 |
A whine from the front of the motor is almost certainly coming from one of the belt driven accessories. I have never seen a Rover timing chain whine. | ||
| Bill Howell (Billh13) Member Username: Billh13 Post Number: 179 Registered: 03-2003 |
As usual, half the people will give you good advice and the other half will tell you that you need to replace the cam and lifters for no other reason than you got the hood up. Look for the simple stuff first work your way to the worst case problem. I'm going to be 90% sure with this fix. You ready.........OK here goes......Tensioner pulley bearing....about $30 to have the alt. rebuild shop fix it for you. They are common to go out. I am 100% sure it is not a $500.00 cam squeaking. The easiest way to find the sorce is put a screwdriver to your ear and hold it close to the differant spots on the belts that have bearings. You have to touch the screwdriver to both your ear and the motor. DON'T put it on the belt. You'll look stupid with a screw driver drove into your ear. You'll know when you get to the right bearing. It will about make you deaf. | ||
| Geoff 93 RRC (Geoff) Member Username: Geoff Post Number: 113 Registered: 11-2002 |
Cams don't squeak (rattle maybe), but if I tore down the front of the motor to replace the timing chain I would consider the camshaft as well. 150K miles the cam is likely worn out. | ||
| John Roche (Jroc) Member Username: Jroc Post Number: 177 Registered: 08-2002 |
About what milage would you consider changing the timing chain? Is waiting til it breaks dangerous? And if one were changing the timing chain wouldn't it make sense to change the camshaft as well? | ||
| Eric Ratermann (Ericrat) Member Username: Ericrat Post Number: 56 Registered: 08-2002 |
A timing chain kit is $100 from Atlantic British and probably a lazy 6 or 8 hour job. Both generous estimates, Nathan is cheaper and I am probably not that slow. Breaking can be catastrophic. Although, I broke a timing chain in a small block Chevy on startup, couldn't figure out why it didn't start and turned the key again without fatal results. So for a hundred bucks and not a whole lot of work you can eliminate the possibility and if you can use good parts and steel gears never worry about it again. Cams wear more slowly, are MUCH more expensive, require MUCH more dissassembly, and are not catastrophic failures. That's my logic anyway, yours may vary. What I do have is a noisy alternator bearing and a somewhat noisy tension pulley bearing. So, anyone have suggestions for alternator bearing replacement. I am about to go search the archives. Bill gets 1 beer credit for the point is the right direction. Funny to I had poked around already but didn't pop off the top of the shroud to get to the alternator pulley. Thanks, Eric | ||
| Bill Howell (Billh13) Member Username: Billh13 Post Number: 185 Registered: 03-2003 |
I knew it was not a squeaky cam. If you did not detect it, I was being sarcastic. There is where the 100% sure came in. Fix the tension pulley first. I thought mine was my alternator bearing, since they were so close. Cost much less to fix. | ||
| Eric Ratermann (Ericrat) Member Username: Ericrat Post Number: 58 Registered: 08-2002 |
I replaced the tension pully bearing tonight. Some help, definetly alternator bearings. I used the Napa part # from the cross reference chart. Worked out fine. Anybody ever taken a Marelli alternator apart? | ||
| Bill Howell (Billh13) Member Username: Billh13 Post Number: 194 Registered: 03-2003 |
The alt. bearing has to be pressed out and in. May be more than you want to get into. I feel for you and your fix. |
