Question about Cams.

[911-S]

Hi, I have a 76 911S which should have S cams right? she is stock and original.
found an engine with Solex grind Cams, will this work with my stock CIS injection? and what is the difference with solex vs S cam
thanks

[Daves911L]

No, Solex cams will not work with your CIS. All 2.7 CIS cars have the same cams, known appropriately enough as "CIS cams". These are very mild which the CIS requires since it sprays fuel continuously (hence its name) into the intakes, even when the valves are closed. So though you have a 911 "S" you actually don't have what are considered "S" cams, which were used on the '67-'73 911S (and 2.7 RS).

[Bill Verburg]

Originally Posted by 911-S

Hi, I have a 76 911S which should have S cams right? she is stock and original.
found an engine with Solex grind Cams, will this work with my stock CIS injection? and what is the difference with solex vs S cam
thanks

From '74 all 911s except the RoW Carrera w/ 911/83 and SC/RS have CIS and smog cams, the earlier carb and MFI cams w/ longer duration and higer lifts can't be used w/ CIS injenction and CIS pistons

by '76 the CIS 2.7s all used the same cams in the US the cars had the S label but they used the same smog cams as the ROW normal 2.7, I suppose it should be called a smog S,
specs for smog S are IO 6ATDC, IC 50ABDC, EO 24BBDC, EC 2BTDC
specs for smog N are IO 1ATDC, IC 35ABDC, EO 20BBDC, EC 7BTDC
specs for S/RS(911/83) are IO 38BTDC, IC 50ABDC, EO 40BBDC, EC 20ATDC

[mreid]

Wow, really disappointing duration numbers on the CIS cams. I was told my 74 2.7 had RS cams, but when I removed the covers to update the tensioners, they were the stock CIS cams. I knew they weren't at the point of purchase, but it is irritating what people will tell you when they think you don't know better.

[911-S]

Thanks Daves911L for the info, Im in need of a 2.7 long block for her so in looking have found ones with E cams and one with solex ..... but I need to find one with CIS cams ok thanks.

[911-S]

THanks Bill Verburg for the info aswell, SO I will need to ask the seller of any 2.7 I find if it has the stock CIS cams to work with my 76'. Thanks

[Daves911L]

I admit to a particular fondness for 2.7 cars. I had a '76 911S for many years and it was one of the most pleasant 911s to drive I have ever owned. Smooth, quiet, fast, reliable, and beautiful (Cockney brown!). Always regretted selling that car. I often wonder where it is today?

The 2.7 CIS cars got an undeservedly bad reputation way back when. It was due to a few readily fixed weaknesses, a bunch of ham-handed mechanics, and Bruce Anderson's writings. Always thought it was a shame, and happy to see they are coming into their own now.

Why do you need a "long block"? Perhaps it would be more effective to properly repair whatever is wrong with yours. Be cautious about just buying a "long block" and thinking your troubles are over. It might have been done right and be a perfectly solid motor. But back in the day it was fashionable to gut the injection and change to carbs without always taking care of the real problems.

[911-S]

Yeah I really do enjoy my 76' 911S (Alpine White), but as you know the 2.7 head stud problem she leaks too much oil. and rebuilding the original 2.7 is not a very cheap endeavor, so was hoping to find a decent runner 2.7 to put in (good luck right), I am selling her as I need to pay for Grad school and hate to part with her but it is what it is. So did not want to sell her with her leaking as much as she did, so dropped the engine out and looking to put another in with perhaps less miles on it.

[Peter Zimmermann]

Mileage on a "used/repaired/rebuilt" engine isn't the problem. HOW the repair was done is the problem. There is a right way to fix a 2.7, and, unfortunately, a myriad of wrong ways to "fix" a 2.7. You will be far better off putting the engine back in and selling the car as-is. You won't get much for it, but...

[911-S]

Yes Mr. Zimmermann I understand, what do you think a fair price would be for an excellent condition 76' 911S that comes with a core but just needs a rebuild?
thanks

[Peter Zimmermann]

Originally Posted by 911-S

Yes Mr. Zimmermann I understand, what do you think a fair price would be for an excellent condition 76' 911S that comes with a core but just needs a rebuild?
thanks

In a sentence, I don't have the foggiest idea. If your car is truly a Condition #1 (perfect), or Condition #2 (excellent with no obvious or glaring flaws), other than the engine, of course, it should be easy to sell. With the engine out selling the car will be very difficult, with it running a potential buyer can at least evaluate shifting, brakes, and other mechanical systems. My shop had a standing policy to never discuss a car's value because we were mechanics, not sales people. I still stand by that policy.

Your car is a very unusual situation, you might want to test the waters on e-Bay and see what happens! If you can establish exactly what's wrong with your engine it would be helpful. Are you sure that the head studs have pulled? Or does the car need only cam o-rings and oil return tube o-rings? Possibly an oil pressure switch and thermostat o-ring? "Oil leaks" doesn't always mean that a rebuild is necessary.

[larrym]

the late Bruce's advice to me - "put it on eBay at triple-reserve and see how high the bids come in - that will set your "fair price"

.

[Steve@Rennsport]

Originally Posted by Peter Zimmermann

Mileage on a "used/repaired/rebuilt" engine isn't the problem. HOW the repair was done is the problem. There is a right way to fix a 2.7, and, unfortunately, a myriad of wrong ways to "fix" a 2.7. You will be far better off putting the engine back in and selling the car as-is. You won't get much for it, but...

Pearls of wisdom from Professor Zimmermann,.....

Frankly, this advice applies to ANY "rebuilt" engine as that word means different things to different people.

[larrym]

Originally Posted by 911-S

what do you think a fair price would be for an excellent condition 76' 911S that comes with a core but just needs a rebuild?
thanks

tell us where the car is located - that can be a significant factor in the answer to your question. In Ca for example, a '76 has to pass smog - some other states it's irrelevant, so a guy can put in any hotrod motor and go

i have a nice 3.2 waiting for such an opportunity - but not for a CA smog car

.