Need help with intake runner I.D. for '81-83 Euro SC engine

[dd74]

Euro SC owners - can any of you do me a favor and tell me if "2R" or "4R" is stamped on your front-most right-side intake runner?

I'm wondering one two things based on the Euro SC engine:

1) If 4R signifies the larger intakes. I think it does, right?

2) If stock Euro SC engines were equipped with these larger intakes.

Thanks.

[ipapilot]

My car is an 83 euro, and yes the intake does have a 4R at the end of the part number.. Hope that helps!
Brian

[SpeedracerIndy]

Ditto, 4R here too on a stock 930/10

I have always heard that the 930/10 motor has larger ports and runners (like 78-79 US spec). No proof though, just what I've always heard.

[1980SC]

Casey,

I have '79euro, '80euro, and '83euro heads. All of them have the larger 39mm intake ports.

And yes, all of the euro's came with the larger 4R intake runners.

-Rob
1980sc

[Glasgow 911SC]

So we have the official 'King of The SC's'

[SpeedracerIndy]

Originally posted by 1980SC
Casey,

I have '79euro, '80euro, and '83euro heads. All of them have the larger 39mm intake ports.

And yes, all of the euro's came with the larger 4R intake runners.

-Rob
1980sc

Finally, I have my proof!! Thanks for the confirmation.

[dd74]

Rob - thanks for the input. I knew I could count on you for the answer.

[Jadams1]

Learn something new every day here. It's a crappy picture but the last 2 digits look like 4R.