Euro identification

[Scott928]

My 77 928 was imported by the first owner to the US before actual importing started in 78, so is it possible that it is the more powerful Euro version? is there an easy way to tell?

[MPDano]

Engine number.

Heres a link to the codes and location pic of engine number.

Porsche 928 Forums dot com - View topic - 928 Engine Types & Performance Data

[DPW928]

On the 78 and 79 CIS engines the only difference in HP was due to the US version having the pollution control devices. If yours was federalized when imported the HP will be the same as the US version.

[Scott928]

It does have a smog pump so i assume it has been, what emission control devices does it have besides the smog pump that rob it of power?

[MPDano]

Smog pump, Cat., Inverter Valve, Carbon Canister, Speedo/Tach changeout, side marker lamp behind rear wheel.

Mine's a Euro Gray Market and this is what was changed on mine for Federalization.

[MPDano]

BTW, what are the Smog Laws in Utah? Calif is friggin super strict.

[Scott928]

1.2 CO, 220 parts per million hydrocarbons. I believe thats the standards everywhere, started in 1981

[DPW928]

As mentioned, the euro engine doesn't have the smog pump, catalytic convertor. It also has a different WUR that has a second vacuum line for deceleration.

Dennis

[MPDano]

Originally Posted by DPW928

As mentioned, the euro engine doesn't have the smog pump, catalytic convertor. It also has a different WUR that has a second vacuum line for deceleration.

Dennis

If it was Federalized it does. Mines a Euro that was Federalized and has all the changes I mentioned.

[DPW928]

Originally Posted by MPDano

If it was Federalized it does. Mines a Euro that was Federalized and has all the changes I mentioned.

Correct, since yours is a federalized euro engine. BTW some agencies that converted euro cars to US spec's skipped some of the steps. My 78 euro still has the non cat pipe from the headers to the middle muffler.

[Danglerb]

Euro S is the high power, 300 hp, version and wasn't offered until 1980 model year. All of the Euro non S models from 77 to 82 are basically the same as the US 78/79. Pull the smog stuff off a US and get Euro results. OTOH weird things are frequently done during importing with can severely reduce hp and make proper tuning a headache later on.

Whats your vin?

[MPDano]

Originally Posted by DPW928

Correct, since yours is a federalized euro engine. BTW some agencies that converted euro cars to US spec's skipped some of the steps. My 78 euro still has the non cat pipe from the headers to the middle muffler.

Yes, I have heard of different 928 owners getting different results. You would think there would be a Federalization Standard, but that would make too much sense.

[Scott928]

My VIN is 9288102573. what about the euro s gives it more power?

[Xlot]

Originally Posted by Scott928

My VIN is 9288102573. what about the euro s gives it more power?

Your car is a very late 78 model year Euro car, probably manufactured in July 1978 (its very close to the upper end of the VIN range).

The Euro-S 4.7L engine has high compression, better cams, bigger intake runner diameters, and much improved flow in the heads than the 4.5L.

[DPW928]

Originally Posted by MPDano

Yes, I have heard of different 928 owners getting different results. You would think there would be a Federalization Standard, but that would make too much sense.

Believe there was a standard but enforcement was lacking during this period. If a federalizer could save $500 by skipping the cat conversion, who was going to complain?

[Scott928]

Thats great information to know, thank you. I think if i do some blue printing, porting and polishing at school, get some high compression pistons and raised cams i may get close to the power i want, with the addition of a supercharger of course. Im really just trying to make this 4.5 work for me so i dont have to spend more money

[MPDano]

Originally Posted by Scott928

Thats great information to know, thank you. I think if i do some blue printing, porting and polishing at school, get some high compression pistons and raised cams i may get close to the power i want, with the addition of a supercharger of course. Im really just trying to make this 4.5 work for me so i dont have to spend more money

Have you priced out what just the rings will cost you. I think I priced them at $80 "PER" cylinder last year. $80 time 8 makes you poor right off the bat. Thats "JUST" the rings.

[Danglerb]

Originally Posted by Scott928

Thats great information to know, thank you. I think if i do some blue printing, porting and polishing at school, get some high compression pistons and raised cams i may get close to the power i want, with the addition of a supercharger of course. Im really just trying to make this 4.5 work for me so i dont have to spend more money

If something around 240 hp is the power you want, then you have a plan, expensive though. Since nobody in years has rebuilt a 4.5L all the parts are expensive, and not Chevy expensive, Porsche expensive.

High compression pistons for a 95mm bore would be custom made at about $200 a hole.

*** Best advice I can give you is to start by getting the car running perfectly in pure stock condition. ***

[Scott928]

sounds like i bought the wrong car haha i have 2 of these cars, ive pulled the engine from one and tore it apart. everything is in good shape and i should be able to reuse the block as is and even piston and rings so i may just stick with tuning the intake and exhaust to try and get as much power as i can and then sell everything else i dont need. Anybody need some parts? ha

[Danglerb]

How do you know you bought the wrong car until you have it running as it should be?

Are both of your cars 78's?

Time to post some picts and let us all see what you have.

If you reuse rings, make sure they go back in the same bores. I stamp the number on the rods when I pull them.