Author Topic: 75 3.0L Vs Potenziata  (Read 40411 times)

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Beatle

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75 3.0L Vs Potenziata
« on: February 24, 2012, 11:25:37 PM »
I assumed all 3L 75s were 'Potenziatas', but now I'm not sure.

If not, what does the Potenziata have over the stock 3L car?
Paul B
QLD

Past:
'79 GTV - Loyal 1st love
'76 GT - Track entry
'89 75TS - Saved
'76 Alfetta - Sacrificed
'83 GTV6 - NT bullet
'67 Duetto - Fun
'66 Super - Endearing
'92 164 - Stunning
'85 90 - Odd
'04 GT 3.2 Rosso/Tan - Glorious
'02 156 V6 Auto Rosso/Tan - Useful daily

Duk

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Re: 75 3.0L Vs Potenziata
« Reply #1 on: February 25, 2012, 09:01:13 AM »
The Potenziata had the Digital Motronic 4.1 engine management system based on the 60-2 crank angle sensor.
Some say that the Potenziata's had different camshafts.
I believe the compression ratio was higher at 9.5:1
The Potenziata's had the 3.73:1 diff ratio instead of the taller 3.55:1.

Apart from the Motronic, the CR, the diff ratio and maybe the cams, there is nothing else, as far as I can tell that is different.

For me the biggest improvement is the diff ratio (tho I've not driven the earlier cars) as everything else can be upgraded to or made even better than the Potenziata.

shiny_car

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Re: 75 3.0L Vs Potenziata
« Reply #2 on: February 25, 2012, 10:13:57 AM »
Cams are definitely different, and I believe are the same profile as 164Q cams. They are still considered 'mild', but can be an upgrade for the L-Jetronic (pre-Potenziata) engines.

An alfabb.com thread I've bookmarked: http://www.alfabb.com/bb/forums/milano-75-1987-1989/28155-potenziata-facts.html

:)
Giulietta QV TCT . 1.75 TBi . Magnesio Grey - Black
GT . 3.2 V6 . Q2 . Kyalami Black - Red
75 . 3.0 V6 . Alfa Red - Grey

Beatle

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Re: 75 3.0L Vs Potenziata
« Reply #3 on: February 25, 2012, 11:47:01 AM »
Cheers fellas.  Clears it up ...... somewhat.   

So was the Potenziata an additional model sold alongside the rest of the range, or were all the V6 75s Potenziatas after a certain date?
Paul B
QLD

Past:
'79 GTV - Loyal 1st love
'76 GT - Track entry
'89 75TS - Saved
'76 Alfetta - Sacrificed
'83 GTV6 - NT bullet
'67 Duetto - Fun
'66 Super - Endearing
'92 164 - Stunning
'85 90 - Odd
'04 GT 3.2 Rosso/Tan - Glorious
'02 156 V6 Auto Rosso/Tan - Useful daily

Anthony Miller

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Re: 75 3.0L Vs Potenziata
« Reply #4 on: February 25, 2012, 01:24:38 PM »
Potenziata was released in 1990 with 192bhp @ 5800 rpm replacing the existing Ljet 3.0l and it's 188 bhp @ 5800 rpm
Now-  '99 156 2.5l V6 (rosso)
         '88 75 3.0l V6 (grigio)
Then- '81 Giulietta 2.0l transplant (ol whitey)
         '82 Giulietta 2.0l transplant (ol brownie)
         '82 Giulietta 2.0l TS transplant (ol red)

VeeSix

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Re: 75 3.0L Vs Potenziata
« Reply #5 on: February 25, 2012, 01:35:16 PM »
Yes all correct plus cosmetically they had different wheels and black seats and doorcards where as the regular 75 V6 3.0 had the grey seats with vinyl end covers, they were basically Australias top of the range 75 but as mentioned everything mechanically can just be upgraded, i still have my original two owner Potenziata, my second car i ever had, i traded my first car a 1982 GTV on it, do not think i could ever part with it

I think 75s are in that lull now and if you want one now is the time to grab one, there are some great examples out there, a average condition Potenziata in Queensland went on e-bay the other day for buy it now $500, i was almost tempted to grab her but my stable is just so full, maybe someone on the forum purchaed her, she went on on the morning and was sold that night, 75s are my second favourite Alfa Romeo after the classic GTV6, just wish you could raise the drivers seat like on a 90, 75s seats are too low for my liking, maybe i could swap the seat frame from a 90  ??? ??? ???
« Last Edit: February 25, 2012, 02:09:02 PM by VeeSix »
1985 Alfa Romeo GTV6 V6 2.5 12V 
1986 Alfa Romeo 90 V6 2.5 12V
1990 Alfa Romeo 75 V6 3.0 12V Potenziata
1990 Alfa Romeo 164 V6 3.0 12V Zender
1991 Alfa Romeo 164 V6 3.0 12V QV
1992 Alfa Romeo 164 V6 3.0 12V QV

Beatle

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Re: 75 3.0L Vs Potenziata
« Reply #6 on: February 25, 2012, 03:34:37 PM »
Aren't 75 seats mounted in the same manner as the Alfetta?  If so, simply shim the seat up with alternate spaces/washers.   Just be sure the mounting bolts remain in-safety.  If not, go buy longer bolts of the correct grade
Paul B
QLD

Past:
'79 GTV - Loyal 1st love
'76 GT - Track entry
'89 75TS - Saved
'76 Alfetta - Sacrificed
'83 GTV6 - NT bullet
'67 Duetto - Fun
'66 Super - Endearing
'92 164 - Stunning
'85 90 - Odd
'04 GT 3.2 Rosso/Tan - Glorious
'02 156 V6 Auto Rosso/Tan - Useful daily

Beatle

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Re: 75 3.0L Vs Potenziata
« Reply #7 on: February 25, 2012, 03:43:45 PM »
Does the Potenziata have a Potenziata badge on the tail?    How could you pick one at a glance without looking inside or under the bonnet?
Paul B
QLD

Past:
'79 GTV - Loyal 1st love
'76 GT - Track entry
'89 75TS - Saved
'76 Alfetta - Sacrificed
'83 GTV6 - NT bullet
'67 Duetto - Fun
'66 Super - Endearing
'92 164 - Stunning
'85 90 - Odd
'04 GT 3.2 Rosso/Tan - Glorious
'02 156 V6 Auto Rosso/Tan - Useful daily

VeeSix

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Re: 75 3.0L Vs Potenziata
« Reply #8 on: February 26, 2012, 11:52:40 AM »
No, there is no Potenziata badge, this was just the name given to them because they had extra power over the standard 3 litre, i think Potenziata means power in italian, if the Potenziata is still stock you can tell just by looking at them via the wheels and black seats, if wheels have been replaced the black seats are the only clue otherwise externally they are the same as a standard 3 litre, they actually came with a green cloverleaf badge on the rear where as the standard 3 litre did not but alot of them seem to be missing this by now.
1985 Alfa Romeo GTV6 V6 2.5 12V 
1986 Alfa Romeo 90 V6 2.5 12V
1990 Alfa Romeo 75 V6 3.0 12V Potenziata
1990 Alfa Romeo 164 V6 3.0 12V Zender
1991 Alfa Romeo 164 V6 3.0 12V QV
1992 Alfa Romeo 164 V6 3.0 12V QV

bteoh

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Re: 75 3.0L Vs Potenziata
« Reply #9 on: February 26, 2012, 12:25:28 PM »
Hi VeeSix,
I am a little intrigued with the amber reflectors you have in your front bumper. My Potenziata doesn't seem to have those. Are those front calipers brembo reds or Girodisc ?
Car looks very nice indeed :)


1969read

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Re: 75 3.0L Vs Potenziata
« Reply #10 on: February 26, 2012, 06:37:56 PM »
The rear badge work is on the other side on late model 3.0  75 Jason
Also glass is from a different supplier

1969read

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Re: 75 3.0L Vs Potenziata
« Reply #11 on: February 26, 2012, 08:52:04 PM »
Also post 1990 3.0 litre cars have the roof drivers side hanging strap handle deleted, with this is also from a different supplier than the 3.0 1989 model. (minor differances) Aswell the wipper arms have the word Fiat stamped on them where 1989 3.0 had alfa romeo.
cheers Jason

1969read

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Re: 75 3.0L Vs Potenziata
« Reply #12 on: February 26, 2012, 08:54:01 PM »
The photo provide above looks like a state side model which was posted on the Alfa B B site Jason

Beatle

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Re: 75 3.0L Vs Potenziata
« Reply #13 on: February 26, 2012, 09:05:41 PM »
When did the V6 get the grille with the 'fat' bar along the top?  I had an '89TS for a short while with that grille.   Does the fat grille align with the 3.0L engine, the Potenziatia, or is that part unrelated?

« Last Edit: February 26, 2012, 09:10:05 PM by Paul Bayly »
Paul B
QLD

Past:
'79 GTV - Loyal 1st love
'76 GT - Track entry
'89 75TS - Saved
'76 Alfetta - Sacrificed
'83 GTV6 - NT bullet
'67 Duetto - Fun
'66 Super - Endearing
'92 164 - Stunning
'85 90 - Odd
'04 GT 3.2 Rosso/Tan - Glorious
'02 156 V6 Auto Rosso/Tan - Useful daily

1969read

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Re: 75 3.0L Vs Potenziata
« Reply #14 on: February 26, 2012, 09:35:36 PM »
(Revised Grill) is 89 onwards twin spark and 3.0, Auto had flat grill as well as 2.5 Jason