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I'm curious. Looks like a clean car. My question is about all the parts that have been replaced on a low milage car. Head gasket, Valve guides are what caught my attention. The seals and hoses I understand. It's old, just do it. Probably the drive gear just to give the new seal a surface.
Are the NA 8V known for problems with the HG or guides? 174k on the clock of mine with no known issues and I do not take it easy
The list of replaced in prep for sale parts, for brevity sake.
Head gasket
Timing Belts and idlers
Water pump
Valve guides and seals
Front driveshaft seals and collars
Rear main seal
Engine mounts
Oil pump drive gear
Oil pressure & coolant sensors
Speed and reference sensors
Distributor cap and rotor
Fuel pump, filter, & level sender
Various fuel hoses
Right. Rebuilt calipers too. I wouldn't think that would be needed. Seller states the head work was a while I was there, but seems excessive to open it up like that. Either way I suppose it's good now
Valve guides are at the last parts of the engine to get lubricated in most engine designs, so excessive cold starts/short trips can cause them to wear out with low mileage on the odometer. This is more extreme with air-cooled 911s--- the factory used inferior valve guide materials for many of them. I think the record at my shop was a top-end rebuild on a 18K-mile 993 Turbo, it had a burned exhaust valve because of the exhaust valve guide wear!
The flip side of this is another customer's '89 911 Carrera 3.2 with over 400K miles, he commuted in it daily for almost 35 years. We finally rebuilt the engine last year, heads had never been removed, and the valve guides were GOOD, and not replaced! The 3.2s were notorious for premature valve guide wear in many cases. Long story short, limit short trips, resist the temptation to start and idle the engine of a stored car to "lubricate things." Drive it and get it up to full temperature every time if possible.
Dragging brake calipers are another bugaboo of cars that sit more than they are driven and do not have the brake fluid changed every 2 years. The brake fluid absorbs water, this disperses through the system, caliper pistons/bores get corroded. They can sometimes be freed up by changing the brake fluid and then pushing the calipers pistons back and forth several times, and perhaps changing brake pads to change the rest position of the caliper pistons. But, the best repair is to rebuild or replace the calipers.
Chris A.
---'86 944 Turbo track rat
---'90 944S2 Cab daily/touring car
---'73 BMW 2002tii road rally car
---'81 Alfa Romeo GTV6 GT car/Copart special
---'99 BMW Z3 Coupe daily driver/dog car
---'74 Jensen-Healey roadster
---other stuff
Valve seats, guides, and faces are all wear items, so if the head was off these are typically measured and if out of spec, replaced. Exhaust guides in particular wear more than the intake side.
They can also require replacement if there was ever piston to valve contact in the past, which we know happens if a car has been neglected or if someone does a timing belt job not fully knowing what they are doing. So not overly surprising to have guides replaced, headgasket or other head work done if this had happened sometime in the past, which unfortunately isnt uncommon with the number of DIYers working on these cars.
Thanks for the replies all!
I was just curious if there was some known issue that I haven't dealt with or should be watching for.
Sounds like we agree that the car was likely abused/neglected. Lord knows mine was, but at least my engine seems strong so far!
I saw this one too, a really nice example... I was tempted to bid on it.
It looks like it sat unused for a period of 18 years, which is more than enough time for all the seals, gaskets, and rubber components to dry out and harden. Low-mile cars typically look nice, but it's hard to start putting real miles on them without components failing one after another, as the fluids haven't been circulated for many years.
Nothing on the repair list, while quite comprehensive, seems out of the norm to me for a car with this history. Some of it, like the valve guides and crank sensors, was likely done proactively, but since you're already there it makes sense to knock out the essentials.
NC944er wrote: Wed May 20, 2026 7:24 am
I saw this one too, a really nice example... I was tempted to bid on it.
It looks like it sat unused for a period of 18 years, which is more than enough time for all the seals, gaskets, and rubber components to dry out and harden. Low-mile cars typically look nice, but it's hard to start putting real miles on them without components failing one after another, as the fluids haven't been circulated for many years.
Nothing on the repair list, while quite comprehensive, seems out of the norm to me for a car with this history. Some of it, like the valve guides and crank sensors, was likely done proactively, but since you're already there it makes sense to knock out the essentials.
There is still time to bid!
After sitting for that long it was probably the right call to just get it done. I might have done the same thing. I am very guilty of "if it isn't broke, don't fix it" Some times that has come back to haunt me.
