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How Much (for timing belt replacement - RV)

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Old 03-20-2007, 03:32 PM
  #16  
EC928NC
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Thanks Mike - Thanks everyone.
Old 03-20-2007, 03:55 PM
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Garth S
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If this stays a DIY, I am one for leaving the pump untouched if it is dry, shaft is tight, and spins silky smooth: then, with basic tools and a flywheel lock you can strip it down.
Provided the cam gears are OK, buy a TB, tensioner O-ring, boot & clamp ( + gasket if the tensioner leaks - otherwise, rebuild it on the car and leave the gasket alone), carrier arm bushings, tensioner roller .... and press new $7 bearings into the top and bottom idlers. That will keep it <$200, and have you done in a couple of evenings.
Old 03-20-2007, 04:43 PM
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dr bob
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Check with Renn-user Rixter in your area. He has a mountain of 928 experience. If nothing else, line up a few local owners who have BTDT, so you have a support team there if something goes out of wack in the process. Your first TB job will take the weekend, your second will take a long day.

A few locations in the country manage to gather a few owners together who's cars all need the service at about the same time. We hold a 'timing belt party' and share tools and knowledge, maybe a sandwich and suds, as a couple get done at a time. Find one and go to it, even if you don't get your car in the queue right away. The idea is that you 'pay forward' or 'pay-back' to help others after thay have helped you. Being garage-less makes it tough to hoet a TB party but you can usually get in on one if you bring some of those sandwiches or suds.

Most of the tools needed are common in a better home mechanic's toolbox. You'll want a couple torque wrenches for the small bolts, and a big one (3/4" drive) with a 27mm socket for the nose of the crankshaft. You can usually rent these locally for the one-time use. Specialized tool list is short -- You'll want a 928 model-specific flywheel lock to keep the engine from rotating while you work. You'll also need a belt tension gauge, a tool that should be part of your permanent collection anyway. Both of these are available from 928 International and the other Big-x 928 parts vendors.

When I did my last belt on my car, I called Jim at 928 International and asked him to put together a 'care package' with all the parts I might need. I added all the coolant hoses under the hood (>5 years old), plus a new coolant bottle cap, etc. Jim gave me everything else I needed, and most importantly added some parts I didn't know I was going to need until I was in the thick of the project. Sealing washers for the block drains and a new radiator drain plug, washers and clips for the lower belt roller console, oil pump seals/o-rings, cam seals, stuff like that. Very complete, very handy, and a BIG time-saver when I didn't have to wait for a part to come in the brown truck to finish the job. I needed to get some gasket sealer, grease, oil (and a filter from my parts shelf), coolant, water wetter, distilled water, a few wire ties, papr towels and Simple Green.


I put the car on stands for the work, mostly so I can pull the pan and slide it towards the rear and keep it under the car. I get it up high enough to save the lower back muscles, and also to allow room to slide under for the flywheel lock, the block drains that Dave A. mentioned, and the lower radiator hose and fan console R&R. Car ends up on 4 stands BTW to make all the right heights at the right places happen at the same time.


Dealer labor rate for walk-ins is over $150/hr in sunny soCal, so a few of us here can only afford to own the cars by hiring ourselves to do our own work. Dealers mechs really only want to work on new cars, where the list of possible problems can be narrowed. For other older cars, like ours, the rate is often inflated to either cover all possible contingencies or to just scare you off. If your 929 gets too expensive to keep, they'd be happy to upgrade you into a new.... What do they sell now that's a step up from a 928? Anyway, they'd love to sell you one.
Old 03-20-2007, 04:57 PM
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EC928NC
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Thx Dr Bob!
Old 03-20-2007, 05:33 PM
  #20  
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Originally Posted by bd0nalds0n
Only if you have the time (and lots of it, the first time you do anything) and are fairly certain you're not going to foul things up in the process.

There was another post recently where the guy pulled his dash to replace the heater core (which should be fairly straightforward) and fried a bunch of ground wires upon reinstall of the dash and pod. How much time and money do you think it'll cost to chase THAT down?

Paying a reputable mechanic to do the work is cheap insurance against potentially major self-induced screwup that ends up costing orders of magnitude over what the original fix would've cost.
Brian's right...sometimes the learning curve can be expensive. I once stuck a screwdriver in the wrong place under the dash of my '57 Olds Convertible and almost instantly had a wiring harness wherein all the wires had melted together into one hopeless blob. It was not quite a total job but changing out a wiring harness is far from any kind of fun. Anytime you're under the dash (especially) it's time to be walking on eggshells. Tbelt change must be carefully done too. A Rennlister by the name of Kelly is selling very good step by step instruction booklet on how to change out a Tbelt, water pump, etc. I'm using it right now and finding that, even though I've done this before, the booklet is really helpful to me in keeping things in the right sequence, torques correct, warnings I'd forgotten, etc. The book is really written for the '85 but I'm finding that it's well written for the S4 also. Obviously, there are a few differences. There are several step by step writeups on T-belt changeouts but I've found this to be the best and most comprehensive resource yet. He's not going to get rich off he booklet but I hope he makes enough to buy another shark.

Harvey
Old 03-20-2007, 05:50 PM
  #21  
Beth
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Timing Belt Party :

Location: My driveway
Attendees: A great group of Rennlisters who responded to my post "Timing Belt Party"
Duration: One day
Car Parts: $250
Beer, soda, german sausages, beer, chips, beer, guacamole, cookies, etc. $200
New timing belt and rebuilt tensioner: priceless
Old 03-20-2007, 06:19 PM
  #22  
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I agree with all of the above and believe anyone with a little time and patience can do the TB/WP job. Patience is the key if it is your first time and you do not have anyone else with experience watching over your shoulder. Double or triple check your process steps and yell if anything seems strange when you get to it - this group is very helpful when/if you get confused.

Of course a TB party also sounds like a great solution if you can get an interested group together.
Old 03-20-2007, 08:00 PM
  #23  
Bill Ball
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Originally Posted by EC928NC
Unfortunately, my trusted mechanics aren't overly comfortable at tackeling this one.
I give your trusted mechanics credit for being honest. Many inexperienced shops will stumble through this job and make a horrible mess of your car.

Parts can be $500-750 depending if they do all the WYAIT jobs (accessory belts, cooling hoses, front main seal, oil pump seals) or replace all the rollers versus replacing their bearings. Labor should be about 8-10 hours.

Timing belt party is the way to go.
Old 03-20-2007, 08:23 PM
  #24  
Nicole
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Originally Posted by Beth
Timing Belt Party :

Location: My driveway
Attendees: A great group of Rennlisters who responded to my post "Timing Belt Party"
Duration: One day
Car Parts: $250
Beer, soda, german sausages, beer, chips, beer, guacamole, cookies, etc. $200
New timing belt and rebuilt tensioner: priceless
Yes, that was awesome!!!



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