3.0 crankshaft distributor gear?

Bmxrams80sc · 03-11-2014, 06:30 AM

Hey guys,

Building a euro 3.0 and have a question about the crankshaft distributor gear. The Long block that I got had a crank that was damaged so I am transplanting a good crank in that is from a non euro engine (at least I am assuming it is non euro). So I am curious if the the euro gear vs the US gear differs at all to run the dizzy. I know the euro 3.0 distributor spins clockwise. Just wondering if I need to swap the gears over or if the difference is only in the distributor???

Thanks!

BURN-BROS · 03-11-2014, 06:53 AM

Some euro models were CCW. The CW were from the 6 bolt cranks. All of the later Euros I have come across were CCW.

Flat6pac · 03-11-2014, 06:57 AM

Im confused, but
The euro 3.0, 76 and 77 use a 2.7, 6 bolt flywheel, crank and 2.7 distributor that turns clockwise using 3 prong CD
You say you have an 80 ROW, well all SC uses a 6 prong CD that the distributor turns CCW and has a 9 bolt end of the crankshaft for flywheel.
Bruce

Bmxrams80sc · 03-11-2014, 07:00 AM

That is interesting..So euro 3.0 doesnt necessarily mean CW? I know the distributors I have are in fact euro PN distributors. So I guess my question is, do I need to match the gear sets? Distributor and crank.

On a side note, is the euro crank actually different than US?

Miles

Bmxrams80sc · 03-11-2014, 07:25 AM

Quote:

Originally Posted by Flat6pac

Im confused, but
The euro 3.0, 76 and 77 use a 2.7, 6 bolt flywheel, crank and 2.7 distributor that turns clockwise using 3 prong CD
You say you have an 80 ROW, well all SC uses a 6 prong CD that the distributor turns CCW and has a 9 bolt end of the crankshaft for flywheel.
Bruce

the euro SCs use a different distributor than the domestic ones do. It was my understanding that 78-83 SC 3.0s rotate CCW and the euro cars CW.

The motor I am building is actually a 79, it isnt for the 80. Everything should be the same though

Henry Schmidt · Henry Schmidt's Garage

Quote:

Originally Posted by BURN-BROS

Some euro models were CCW. The CW were from the 6 bolt cranks. All of the later Euros I have come across were CCW.

Quote:

Originally Posted by Bmxrams80sc

the euro SCs use a different distributor than the domestic ones do. It was my understanding that 78-83 SC 3.0s rotate CCW and the euro cars CW.

The motor I am building is actually a 79, it isnt for the 80. Everything should be the same though

Aaron is correct.
The only production 3.0 911 based engines that came from Porsche with CW distributors were the 75-77 3.0 Turbos, the 76-77 Euro Carreras and the 74 3.0 RS Carrera.

Bmxrams80sc · 03-11-2014, 08:12 AM

Ok so I shouldnt have any issues with the distributor matching the crank? How is the euro distributor different?

Thanks for help!

BURN-BROS · 03-11-2014, 08:17 AM

Here is a Euro SC Dizzy that sold here in the Classifieds. Note rotation

Euro SC Dizzy

Bmxrams80sc · 03-11-2014, 08:20 AM

Quote:

Originally Posted by BURN-BROS

Here is a Euro SC Dizzy that sold here in the Classifieds. Note rotation

Euro SC Dizzy

Well put...duh for me, I have seen the arrow before. Thanks for the help guys!

Mark Henry · 01:14 PM

Simple check.

Hold the dizzy gear against the crank gear, if it's correct the the dizzy will point straight up 90 degrees from the crank. If it's the wrong gear the dizzy will be off at something like a 45 degree angle.

Just did this as I'm going from a CCW to a CW dizzy on my 3.0 and had I had to change the gear

Bmxrams80sc · 03-13-2014, 03:56 PM

I checked and we are all good!

Thanks!

Quote:

Originally Posted by Mark Henry

Simple check.

Hold the dizzy gear against the crank gear, if it's correct the the dizzy will point straight up 90 degrees from the crank. If it's the wrong gear the dizzy will be off at something like a 45 degree angle.

Just did this as I'm going from a CCW to a CW dizzy on my 3.0 and had I had to change the gear

Henry Schmidt · Henry Schmidt's Garage

Be cautious when trying to match clockwise crank gears with distributors.
While all counter clockwise gears are the same, clockwise gears vary. There are two different diameter distributor gears and each one has it's own crank gear. Generally the cut off date is 77 but with a advent of custom distributors (like twin plug) you never know what the previous builder did.

Mark Henry · 03-14-2014, 05:27 AM

Quote:

Originally Posted by Henry Schmidt

Be cautious when trying to match clockwise crank gears with distributors.
While all counter clockwise gears are the same, clockwise gears vary. There are two different diameter distributor gears and each one has it's own crank gear. Generally the cut off date is 77 but with a advent of custom distributors (like twin plug) you never know what the previous builder did.

Thanks Henry, I'll be sure to do a trial fit before buttoning up the case.

lrodri64 · 03-15-2014, 05:46 PM

Hi,
Question....
If I want/need to use a cw (1973 T). dizzie in a 80' sc engine which gear I need to buy?

Thanks.

BURN-BROS · 03-15-2014, 05:55 PM

You would need a crank gear from a 2.0-2.7.

But the 3.0 liter dizzy is a superior unit, modding the tach and a six pin cd would be the way to go.

lrodri64 · 03-15-2014, 05:57 PM

Ok,
Thanks....

Mark Henry · 03-15-2014, 06:06 PM

Quote:

Originally Posted by BURN-BROS

You would need a crank gear from a 2.0-2.7.
.

Same as a VW type 1 or type 4 distributor drive gear, if you look they even have the VW logo on them.

Mark Henry · 03-17-2014, 05:08 AM

Quote:

Originally Posted by Henry Schmidt

Be cautious when trying to match clockwise crank gears with distributors.
While all counter clockwise gears are the same, clockwise gears vary. There are two different diameter distributor gears and each one has it's own crank gear. Generally the cut off date is 77 but with a advent of custom distributors (like twin plug) you never know what the previous builder did.

Did this check and everything looks good, slips in real nice, not to tight not to sloppy.