1980 911sc 3.0
10-22-2004, 11:12 AM
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1980 911sc 3.0
I currently have a 77 targa 2.7, and am going to go look at an '80 sc 3.0 this weekend, is there anything special I need to know about the year or motor before I look at the car. the price is right and it only has 67000 mile on it. it does not have upgraded tensioners, so that will have to be done. any estimates on the cost of that? any input would be appreciated
10-22-2004, 03:21 PM
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Carerra tensioners will run about $600 installed. Be sure to get a PPI - head studs are the main issue on the 3.0 engines, as I found out the hard way. My 62k mile 3.0 is about to be torn down to replace broken dilavar head studs. This is an expensive job. This can only be checked by pulling the valve covers.
10-27-2004, 04:40 PM
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Make sure it has a pop-off valve-under air filter. Very cheap insurance-$50. I learned the hard way. Also, If it's an original engine, I would be concerned about broken or stretched head studs. Make sure you do the normal PPI. Good luck.
11-02-2004, 12:19 PM
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As part of your pre-purchase inspection the upper & lower valve covers must be removed, which allows the technician to visually confirm that all the head studs are intact. This will drive up the price of your PPI, but is still cheap insurance. Also, have your technician check the right side of the airbox below the fuel distributor - if a blue sticker is there the engine is still fitted with its original airbox. If that is the case, to insure reliability, the engine should be removed, the airbox replaced (including all injector seals, manifold sleeves, etc.) properly tuned and evaluated. This will set you back about $1K. DO NOT allow the shop to install a pop-off valve, there is no need for one on replacement boxes. Obviously you're buying a twenty-five year old car, I highly recommend looking carefully through its service records/history to try to determine why it has so few miles, and go from there. A clear warning bell is if the car has had two or three owners in the last year or two. That usually indicates that each has discovered something bad (expensive!) about the car.