1976 3.0

[hank911]

Hi

I just found a new garage mate for my 83SC targa. From what I can gather it's a model that saw limited importation and that the engine (930/02) is the forerunner of the 3.0SC motor. My goal is a hotrod project thats street driven most of the time but can also do DE's at Lime Rock.
Does everything that applies to upgrades on the SC motor also apply to this engine? Also does anyone know if the car itself is more like a 76S or a 78SC??
I purchase the car with the motor apart so I'm thinking about going to 3.2 with carbs or one of the new mfi's and a set of new cams,ssi's along with suspension updates and a couple RS style bumpers. I'm also looking to source a 915 as the car came without a tranny.
Thanks in advance for any & all info!!

Regards,
Philip Pallante
83SC Targa web20/21 ssi
76 3.0

[Bill Verburg]

Sounds like you bought your self a Carrera 3.0

These cars were never imported officially, but a # were brought in as gray market cars.

You should have some EPA and DOT release documentation to go w/ the car, but In 30 yrs I have never had to produce mine except at the original registration in N.H.

the engine is a mish mash of parts.
the case is an aluminum 930 casting as used in the 930 and subsequently in the SC.

the crank is the earlier version as used in the 2.4 and 2.7 mg. engines.

the ports are the big 39/35 variety, valves are 49/41.5

the cis fuel head flows somewhat better than the later SC versions

the dist. still has points, the dist rotates in the proper clockwise direction rather than the SC electronic ign. cc way.

As w/ the SC SSIs are a good choice as is a mild cis cam like the 20/21.

The interior of the S, SC and mid year Carreras was pretty much the same, but the Carreras all have the wider 9" rear flares.

Mine came w/ Bilsteins and 7 & 8 x15 Fuchs

nice car, Enjoy!

the original trans was a mg. case 915/44 5spd but any of the later 915s will works as well.

[hank911]

Hi Bill,
Thanks for the feedback. I guess aside from registering with Pelican 12/00 now we both have a unique 911. Hard to believe that I found this one in Naples from a fellow PCA member and now it's about 100 miles away from yours. Compliments on what you have done with your car, the pictures look great.

Regards, Phil

[Porsche]

C3's are great cars - good buy!

[GeorgeK]

Originally posted by Bill Verburg

the case is an aluminum 930 casting as used in the 930 and subsequently in the SC.

the crank is the earlier version as used in the 2.4 and 2.7 mg. engines.

I beg to differ. The engine block is not an SC block. It is a turbo 3.0 block, which is lighter than the SC/turbo 3.3 block.

[Bill Verburg]

The engine block is not an SC block. It is a turbo 3.0 block, which is lighter than the SC/turbo 3.3 block.

I have to disagree w/ you here.

The same basic block was used for the first turbos until sometime in '83 when the oil drain was reconfigured.

The difference between the '75-77 and '78 and later was in the crankshafts which are beefier, yes, the case was modified, but only to accept the beefier cranks.

yes, I agree that the 930/50 and 930/02 used the same crank and therefore block, but I disagree that the difference to the beefier crank SC and 3.3 turbo makes it a different block.

[GeorgeK]

Bill
You are most likely right. I have this notion from the fact that you can not put a C3 or Turbo 3.0 crank in a stock 3.3 or SC block.
This is why I thought the block has more differences.

[Bill Verburg]

That's becuse of the crank
one example
'75 thru '77
mains were 62mm

'78 thru 89
mains were 65mm