74 Targa 2.7 engine Inspection

[bzizziTarga]

74 Targa Engine inspection, started with fuel system, Fuel had already been drained by someone and tank looked really clean inside. However, I added a few gallons to tank and unhooked line before the filter hose clamped another line and ran to a clear OJ container and turned key until fuel pump came alive and pumped the remaining stale fuel out of system. Replaced fuel filter, accumulator and a few fuel lines.
Then I gave car a tune up, plugs, cap, rotor, points, wire set. Also replaced air filter.
Installed a new battery and took a while but finally started, smoked like a chimney for a while but cleared up. I then shut off and changed oil, filter and cleaned strainer. Car idles fine but won’t rev up, I hooked up correct CIS fuel gauge on line going to WUR and not near enough fuel pressure so I ordered a new pump. So at this point I had been reading all about the 2.7 engines and pulled case studs. I decided to look for a good experienced air cooled Porsche mechanic and found a good one half hour from me.
They picked up car, and did s leak down test and said motor had very little leak down, less than 5% was the worst cylinder.
Next they pulled engine, removed all the fuel and air stuff on top of engine and put on a stand, next they removed valve covers and checked case studs, all tight and none pulled.
Next they removed chain covers and inspected tensioners, ended up upgrading tensioners and installing fail safe mechanism. Then they adjusted valves and checked cam timing, timing was spot on.So now they ordered a bunch of other parts, new injectors, buckets and O rings, cleaning everything up and resealing everything. Everything on this car is being checked out and replaced if needed, shocks, brake system including all new lines, rebuilding calipers and brake lines all new.
Repacking wheel bearings, relocating new fuel pump near fuel tank, was in the rear.
Said if nothing is back ordered I’ll have car back in two weeks.

[Frog76S]

Man that’s a great mid year 911 and won’t find many in better condition. Thanks for sharing your story. I suggest posting it in the 911 technical forum along with a few more pics including the interior and identifying the accessories that came on it. Beautiful car and condition! Hope to read more of your posts with it.

[bzizziTarga]

Here’s some more photos, place that’s doing work said it’s the nicest older 911 that they have ever seen, no rust anywhere all original.
Everyone wants to buy this car but I won’t sell it, means too much to sell. It’s a family heirloom.

[Cairo94507]

Your car (grandfather's) is a beauty. You are doing all the right stuff and I am happy you will be keeping her so your family can continue to enjoy this beautiful car. Don't forget to replace those old tires before you begin adding miles. Enjoy.

[gled49]

Hopefully the shop replaced what looks like the old rubber chain ramps, and the new tensioners that appear installed should have new idler arms installed to fill the gap, or spacers, not nearly as good as the new idler arms. Good luck

[Trackrash]

Nice car. Very lucky to have an original motor in a '74, in good condition. AHIK

You should seriously consider installing a front oil cooler. Probably also should have your mechanic check the air fuel mixture to make sure it is not too lean, which can lead to over-heating, which kills those mag case motors.

I'm sure he will be replacing all the rubber hoses....

Sounds like you hit the jackpot on your mechanic. He knows what he is doing on aircooled cars, which is rare, and he is not insisting on a rebuild which is a rabbit hole.

Good luck and keep us posted.

My friend's '74 motor after a few thousand in machine work.

[bzizziTarga]

All rubber fuel , vacuum and oil hoes all get replaced. Also he will set air fuel mixture and make sure not too lean. When I was at his shop he had five 6 cyl air cooled Porsche engines completed ready to go into other cars.

[bzizziTarga]

Originally Posted by Cairo94507

Your car (grandfather's) is a beauty. You are doing all the right stuff and I am happy you will be keeping her so your family can continue to enjoy this beautiful car. Don't forget to replace those old tires before you begin adding miles. Enjoy.

What would be a good choice for tires ? Currently has Dunlop 195/60/15’s on all corners. Can I go a little bigger ?

[bzizziTarga]

So another update on Grandpa’s Targa, shop said clutch should be updated to a new style Sachs clutch, said there is plastic parts on original clutch that was still in car that could become brittle and fail. Besides that clutch set looked in great shape and hardly any wear, flywheel looked great as well.

[Trackrash]

Originally Posted by bzizziTarga

So another update on Grandpa’s Targa, shop said clutch should be updated to a new style Sachs clutch, said there is plastic parts on original clutch that was still in car that could become brittle and fail. Besides that clutch set looked in great shape and hardly any wear, flywheel looked great as well.

He may be referring to the old rubber centered clutch disk. Yeah, update that for sure. I would imagine the pressure plate and flywheel are fine.

[Cairo94507]

Finding tires to fit our old Porsche Fuchs wheels is a challenge. I currently have Yokohama 195x55x15 on my deep six rims. They ride and handle very well.

I really want to increase the sidewall to a 60 series but can't find a good sport/performance tire that is not a track tire. My car is only street driven so getting something with a super sticky compound is not desirable as it will pick up everything on the road and throw it up into the fenders.

[bzizziTarga]

Originally Posted by gled49

Hopefully the shop replaced what looks like the old rubber chain ramps, and the new tensioners that appear installed should have new idler arms installed to fill the gap, or spacers, not nearly as good as the new idler arms. Good luck

All chain ramps where also replaced, all oil and fuel lines replaced, new fuel pump, filter and accumulator. Rebuild WUR in the works, anything fuel, oil, vacuum, air related all inspected and replaced if needed.

[chrismorse]

My dad's 74 has been down for 11 years, same thing, brakes, bearings, fuel lines........

Since the engine is out, it might be good to talk to a pro about having the fuel distributor checked/cleaned/adjusted. I see you have the injectors and WUR covered. I sidestepped these issues and went to Al's efi kit.
with the tranny out, might be a goodtime to clean & pack the CVs.
Depending on your intended use and local weather, I'd suggest a carrera cooler, bypass thermostat and factory oil lines - Good insurance - not cheap, but as has been pointed out, mag engines do not like heat.

chris