jwillman

Looking at a 1983 928 with no service records. Has anybody recently had an independat shop do this work and what did it set you bacK?

Any other WYAIT stuff that should be done? Car hasnot seen any maintenance other than oil changes in at least the last 5 years. HAs a manual transmission.

Thanks
Jim

Mrmerlin

Are you handy with a tool box??
If not your gonna pay .
Figure to do the front of the engine and with them supplying parts your looking at about 2500.00,
If you get the parts , and you can, then figure about 1800.00
You would also want to know that you have the HTD round tooth gear set and belt.
Usually if it already has the round tooth set you wind up replacing the oil and cam pullies, the crank drive gear should also be inspected since this one turns faster than all the rest of the gears it sees more friction

danglerb

Timing belt and water pump are replace when convenient items on a US 83, what would concern me is if its ready for the motor to come out. New oil pan gasket, motor mounts, head gaskets, all the motor seals, new hoses etc. Clutch, TT, tranny issues. The old PPI type list of stuff.

RyanPerrella

From Roger its about $400 in parts. $125 in special tools and labor.
I did my labor, borrowed the tools and think i spent $400 with the core charge for the WP returned.

I have said this before, but I dont think i could own one of these cars if i didnt work on it myself. Im also way to **** about things that it would cost me a fortune if i didnt know how to fix all these little items myself.

SteveG

Been said before: If the shop doesn't know the 928, you end up paying for some guy's learning curve on this car. Might he worth it if you trust the shop, they will work w/you and you are sure about your intentions of long-term shark ownership. Note, you will probably soon have waaay more invested than the worth of the car. Ownership has other rewards, have to decide that yourself. But most of us got our feet wet a little at a time by doing a TB first ourselves with help here.

VehiGAZ

What?!?! Guys, I don't mean to go on the attack here, but the self-wrenchers among us should not respond to questions they don't know the answer to. The numbers you pull out are your fear numbers, not my real ones.

Last month, my $90/hr indy mech put in a new timing belt, rebuilt water pump, rebuilt tensioner, rollers, new t-stat, coolant, new dist rotors/caps, and new belts for $2000 - the high end of the job. Without a tensioner replacement, subtract ~$400. If you don't need the caps & rotors, subtract another $275.

We collaborated on sourcing parts too - as always. He usually can get some parts cheaper than I can.

Dean_Fuller

If you do the work your self...

Timing belt..........................$40.00
Water pump.......................$120.00
Tentioner rebuild ket............$20.00
flywheel lock.......................$75.00

Prices are per my 50 year old memory and these are the min parts required. This list assumes cam gears and oil gear are good to go.

blown 87

He is asking for what a Indy shop would charge, not doing it himself.

It all depends on what needs to be done and what parts are used, but figure anywhere from 1200-2500.

Last one I did got gears, valve cover gaskets, reman WP, Conti belt and a few other little things and it was 1800 at my shop.

rixter

I say contact one of our wonderful vendors and buy a tb/wp kit, then add $100 for beer and burgers and throw a tb/wp party
good way to meet your local 928 brothers and learn how to wrench on the car yourself

blown 87

I tell folks who are looking to buy a 928, you need to learn to work on it yourself, or have very deep pockets.

jwillman

Thanks all for the input. I have a bit of mechanical knowledge, replaced WP, AC COMP, radiators etc. I had hoped to do a lot of the work myself and with the help of all the information posted here and some shop manuals I will probably give it a try. The party idea sounds like a winn er as well.

Any recommendations on shop manuals? I have read a few links on the TB/tensioner replacement here. Is there a consolidated process out there for the 16v engine?

All else fails the is always Matt at the TPWS!

Stylemobile

For your amusement:
Not too long ago, I stopped in at Knopf Porsche in Allentown, PA and got a price quote for the T-belt/ water pump job.They quoted me $5000. That is five thousand dollars. I am not kidding here. I even asked them to repeat the price. That is what I paid for the car.
This same shop's parts dept. told me that their replacement spark plugs for my car( Bosch copper) are $42 apiece. That's $336 for a set. WTF??? Buyer beware, I guess....

blitz928

F*cking amazing that they can operate a business like that, problem is all too many car owners just aren't knowledgeable enough to know what they are getting into.

Landseer

Process for changing the timing belt is covered / referenced plenty here.

Its not overly complicated on the 16 V cars. We can talk you through it.

Only special tool needs are a flywheel lock ( some say put car in 5th instead ) and a heavy perferably 3/4 drive 27mm socket (1 1/16) for the crankshaft pulley bolt.

The main complicating factor is recovering from snapping off the heads of the little bolts that surround the periphery of the water pump.

Depending on how detailed pictures look, we might advise you to go in one layer further to replace some seals that are located behind the cam gears, also, seals associated with the oil pump.

Sometimes sprockets need to be replaced because they wear. But on 16 V cars I'm now of the opinion to do that only if wear is particularly bad. Again, can be judged through pictures.

I'd budget $500 for the parts. I'd go for the $240 new Lasso pump, $50 for timing belt, $55 to rebuild the tensioner (boot, oring, clamp, bushings), $5 for lower carriage circlips, $25 to replace all the water pump bolts, new oring for the dipstick. Rest is for seals. Might need a few rollers / bearings as well, that could add $50 per.

blown 87

IMHO, I would not put any water pump on any 928 that does not have a plastic impeller at this point in time.

Maybe after Greg Brown gets his "Fix" for the water pump getting into the block available, then maybe I might run a metal impeller again.

I know I am going to get flamed for that, but don't judge until you have been there.