1986.5 928S Sitting for 14 years! Seeking advice...
06-27-2016, 06:29 PM
#1
Rennlist Member
Thread Starter
1986.5 928S Sitting for 14 years! Seeking advice...
Hello all,
I purchased a 1986.5 928S from my neighbor last year and it had been sitting in his garage for about 14 years. The car is in great shape appearance wise and was running without issue when he parked it and stopped driving it. He had lots of maintenance records and seemed to have taken good care of the car aside from letting it sit for so long. I don't believe the car has even been started or run for over 10 years. I've been lurking and reading the Rennlist forums for over a year now and I'm getting ready to start prepping this baby to bring it back to life.
My first thoughts after reading lots of threads is to start with the following:
1) Clean out the fuel system including dropping the fuel tank. Likely replace fuel pump, fuel filter, strainer, etc.
2) Remove injectors and send out for refurb (Whichhunter?)
3) Replace all rubber fuel lines and vacuum lines
4) Replace timing belt (I will not start another Porken Tensioner discussion
I'll make a decision based on all of what I have read)
5) Rebuild brakes
6) Major tune-up items - plugs, distributor/rotor, belts, filters, fluids, etc.
I'm a little worried that the cylinders/pistons/rings may be in trouble after sitting for so long ... thoughts on gently breaking them free? Pull the plugs, add oil, let soak, crank by hand?
Thanks for any and all advice. I'll try to keep this active with feedback, progress, and I'm sure many, many more questions.
Todd
I purchased a 1986.5 928S from my neighbor last year and it had been sitting in his garage for about 14 years. The car is in great shape appearance wise and was running without issue when he parked it and stopped driving it. He had lots of maintenance records and seemed to have taken good care of the car aside from letting it sit for so long. I don't believe the car has even been started or run for over 10 years. I've been lurking and reading the Rennlist forums for over a year now and I'm getting ready to start prepping this baby to bring it back to life.
My first thoughts after reading lots of threads is to start with the following:
1) Clean out the fuel system including dropping the fuel tank. Likely replace fuel pump, fuel filter, strainer, etc.
2) Remove injectors and send out for refurb (Whichhunter?)
3) Replace all rubber fuel lines and vacuum lines
4) Replace timing belt (I will not start another Porken Tensioner discussion
I'll make a decision based on all of what I have read)5) Rebuild brakes
6) Major tune-up items - plugs, distributor/rotor, belts, filters, fluids, etc.
I'm a little worried that the cylinders/pistons/rings may be in trouble after sitting for so long ... thoughts on gently breaking them free? Pull the plugs, add oil, let soak, crank by hand?
Thanks for any and all advice. I'll try to keep this active with feedback, progress, and I'm sure many, many more questions.
Todd
06-27-2016, 06:37 PM
#2
that is a good list!
I would also drain out the coolant as well.
brake fluid flush.
as far as the cylinders, when you replace the plugs, maybe add a little oil, let it sit, and crank it over a little after you do all the other work. (doing the timing belt, you will crank it around anyway.)
I would also drain out the coolant as well.
brake fluid flush.
as far as the cylinders, when you replace the plugs, maybe add a little oil, let it sit, and crank it over a little after you do all the other work. (doing the timing belt, you will crank it around anyway.)
06-27-2016, 09:19 PM
#6
How many miles are on it? Check the condition of all the gears while you're in there for the timing belt and water pump. Have the MAF rebuilt by Injection Labs.
Electrical, electrical, electrical. Clean all the grounds. Refresh the central electrical panel (removing it is easy - search forums for procedure) and clean/replace all the fuses. Clean all the contacts on the relays. Check the battery ground strap's condition, replace if needed.
Electrical, electrical, electrical. Clean all the grounds. Refresh the central electrical panel (removing it is easy - search forums for procedure) and clean/replace all the fuses. Clean all the contacts on the relays. Check the battery ground strap's condition, replace if needed.
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06-28-2016, 01:18 AM
#10
Nice car. 86.5's are the bees knees!
I have an '84 that I just picked up that like yours probably hasn't been run in at least 6 years. My list is very similar though I've read that using a little ATF in the cylinders instead of oil is better.
I just drained and dropped the fuel tank this weekend. Followed Dwayne's guide and it was easy. Well after I got the wheels off. Sheared a lug nut that was seized to the stud and had to use the hole saw technique to get it off. Hopefully you'll have better luck.
Post your progress as it looks like we will both may be running into similar issues and will be handy to see the advice we get from this great community.
Finally one important piece of advice, if your car has the original radio be sure to keep its whereabouts a secret from Brian (aka the Deputy).
I have an '84 that I just picked up that like yours probably hasn't been run in at least 6 years. My list is very similar though I've read that using a little ATF in the cylinders instead of oil is better.
I just drained and dropped the fuel tank this weekend. Followed Dwayne's guide and it was easy. Well after I got the wheels off. Sheared a lug nut that was seized to the stud and had to use the hole saw technique to get it off. Hopefully you'll have better luck.
Post your progress as it looks like we will both may be running into similar issues and will be handy to see the advice we get from this great community.
Finally one important piece of advice, if your car has the original radio be sure to keep its whereabouts a secret from Brian (aka the Deputy).
06-28-2016, 02:11 AM
#11
The real answer is to take it all apart, clean everything, pit new rubber on, and put it back together.
06-28-2016, 06:04 AM
#13
Instructor
I'd pick up some Deoxit from either Frys or Amazon and refresh all of the grounds and relays. Exercise the lights by hand. Make sure the antifreeze you get is for our aluminum blocks. I found what I needed at Walgreens at bargain prices to boot! Clean the wheels with Gibbs. You don't want to polish the anodized wheels. I've enjoyed my 86.5 for many years and hope you get the same enjoyment!
06-28-2016, 11:55 AM
#14
Rennlist Member
Keep a running thread here on the board as you bring the car up to snuff. They're entertaining and informative for the rest of us, and you will get really valuable information from people chiming in as you post pictures and questions, etc.
06-28-2016, 12:51 PM
#15
Rennlist Member
You have to assume the tires are shot, but the good news the tire size is readily available from Tire Rack.
Is it a 5 speed?
Of course you will have to bring it to Sharktoberfest in October.
Whatever you paid for it, you got a great deal!
You might consider a Porken chip as they make 86.5s run better. Greg Brown endorses this and we put one in my car as well. You might want to buy a fuel line from GB.
Once you get it running and you then drain the coolant you might consider flushing it out with Tide and distilled water and i would replace the anti freeze with the Porsche brand. It's a bit more money but it's what they spec. And most likely for a reason. Brad Penn 20/50 is a safe bet. Hopefully the motor mounts are OK
How many miles?
Is it a 5 speed?
Of course you will have to bring it to Sharktoberfest in October.
Whatever you paid for it, you got a great deal!
You might consider a Porken chip as they make 86.5s run better. Greg Brown endorses this and we put one in my car as well. You might want to buy a fuel line from GB.
Once you get it running and you then drain the coolant you might consider flushing it out with Tide and distilled water and i would replace the anti freeze with the Porsche brand. It's a bit more money but it's what they spec. And most likely for a reason. Brad Penn 20/50 is a safe bet. Hopefully the motor mounts are OK
How many miles?