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While cleaning some grease off my engine today, I discovered the engine part or serial number. AR01500*01796* Here's the question, is it a 1750 engine or blockor a 2000?

Details about the car. 1972 GTV AR*3020612* with some parts like a 1750 GTV and some like a 2000 GTV. For example: Interior, Spica air box, front bumper and grille, serpant badge on rear pillar, match 2000 GTV;

Trunk lid (with ALFA ROMEO badge on back edge), rear bumper (with lights shining up to tag) and tag holder (plain, no light assembly or badge) match 1750 GTV. And then there is that number on the engine block!

I know that Alfa sometimes used remaining previous years parts when transitioning model years and thats probably the explanation for the different parts above. I also know that these are parts original to the car, not replacements.

The question I have is regarding the engine displacement and/or block. I am assuming the 1796 above refers to a "1750" engine, but I may be wrong. Could they have used a 1750 block and installed 2000 internals? The main reason for asking is that I am going to begin autocrossing this car and need to know the displacement for classification. Any ideas on how to confirm displacement without pulling the head? The exhaust manifold is off at this time if there is some sort of technique for measurement going through the exhaust port. Any ideas?

Also, is there any way to determine the build date of my car from the VIN?
 

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According to Joe Benson's Alfa Romeo Owners Guide, the 115.01 series GTVs started with chassis number 3020001, so yours was pretty early in production.
However, Alfa didn't import cars in 1972, so the 2L GTVs were only 73-74, until the Alfettas came out.

I'd say it's a 2L car, probably produced in 1972, but sold in the US in 1973.

Look on the front of the cylinder head and you'll see a symbol.

A 1750 head will have a circle with a triangle in the middle
A 2000 head will have a circle with a box and a slash across it.

Since the cylinder heads are not interchangable, that will tell you right away.

Also, look at the dataplate on the side of the SPICA pump. If it's a 1750 pump, it'll say T237/1. If it's a 2L pump from '72 or '73, it'll say T255.
 

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The number 1796 is not referring to a "1750" engine, officialy it is 1779 cc.
In addition to Roadtrip, here are that marks:


1. 1300
2. 1600
3. 1750 first ser.
4. 1750 sec.ser. and 116 ser.
5. 2000

If you like to know the pedigree of your Alfa, write a letter with your chassis # (VIN) to:

Sig. Elvira Ruocco,
OR E-mail to [email protected]

Centro Documentazione
Alfa Romeo
Viale Alfa Romeo
I-20020 Arese (MI)
ITALY
 

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According to Fusi, in 1972 USA 1750 GTV serial numbers were 1535658 - 1535675 and engine numbers were 00551.07703 - 00551.07736. 1972 USA 2000 GTV serial numbers were 3020003 - 3021166 engine numbers were 01500.00017 - 01500.03247. Looks like you have a 2000 GTV with the correct engine.

Ciao,
 

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That's a 2l engine alright. Our 2l is AR01500*02261.

Engine numbers go something like this. Replace the first zero (after the AR) with a '1' and you get the 5 digit model number of the car in which that engine was originally fitted. In this case, the 01500 becomes 11500. A 11500 is a US spec 2000 Berlina (the GTVs and Spiders use the same 'family' of engines). A US 1750 GTV, model 10551, has an 00551 engine; the 11629 Alfetta Coupe has an 01629 engine, etc.
The last five digits are the sequential serial number.
 

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Couple of additional things:
All the '72s I've seen have the license lights in the bumper. It's an easy way to tell the '72s apart. Also, '72s were sold in the US, just the '68s and the '70s got skipped.

'72 GTVs are pretty rare, so you've got a good year.
 

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Engine recognition at a glance.

The USA two liter engines from the early 70's had the oil filter on the front cover, and it was a spin-on type. The 1750's (1779) had the oil filter next to the motor mount and it was a replaceable element type, as did the 1600.

Only later Europeon engines from the Alfetta era, had a spin-on oil filter for the 1600, 1750, and the two liter

George Willet
 

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I have a '72 GTV 2000 and agree, it's a very, very good year :D

One quick question for you other '72 owners out there: Are your license plate lights Carello or Altissimo?

I have one set of each, and am currently running the Altissimos as they match my tail lights and are in better shape. But, I'd like to know which is original.

Joe
 

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1970s era 1300s (not sold in the US) also had spin-on filters. I've seen them on a few Giulia sedans and Nuovas from the mid 70s.

Andrew Watry
 

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To my knowledge, all Alfa L4 engines, of all displacements, switched to spin on oil filters around the end of 1970.
 

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numbers-HELP!!

I'm gonna lose my mind, maybe someone can sort this out.. A) a 2.0 mtr #01684-A90742. What year? is it alfetta? B) a 1.6 mtr #00536-12792 this came out of car #1204483 which is marked as a 67 Jr.Gt. Also this 1.6 mtr has a strange mark on the head. It's a circle but w/ this * in it. Any ideas? I think the 1.6 is a sprint Gt veloce mtr. but am not 100%. I'm going to try E-mail to elvira about the body but help w/ the mtr.#'s would be greatly appreciated, Joe
 

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According to Fusi for 1967, Giulia GT Veloce motor numbers were 00536.11034 - 00536.20532. Serial numbers for LHD Giulia GT Veloces (105.36) were 246898 - 252474. For a '67 GT Jr. (105.30) the chassis #'s were 1203176 - 1215542 which engine numbers 00530.03707 - 00530.16544. Based on this, the motor you have is a 1600 Giulia. The chassis number falls in the 1300 GT Jr. range. My guess is the GT Jr. prolly had an engine 'upgrade' sometime in it's life.

Fusi only has 1972 data on Alfetta's with engine numbers 01608.00001 - 01608.08954.

HTH,
 

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Joe
Can't help on the Alfetta motor other than to say it is for a 116 car. Your 105 motor is a 1600 and came from a '67 GT or a Duetto according to Fusi
 

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The engine number listings I have, which go up thru 1984, do not list an 01684 engine. And if Alfa followed the same car model number/engine code number format, there should be a car model 116.84. No luck here either. At least thru '84. So if I had to guess, I'd say that your 01684 engine is a 1985 or newer. I'd also guess that it's Euro engine since the 2l US Alfettas had 01615 and 01629 engines while the only other 4 cylinder in the US at that time, the 115 series 2l Spider, had 015xx engine numbers.
 

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So I finally got around to digging out some ARI documentation that I have that lists model years and serial/engine numbers. The first hand typed list for 1971 - 1980 has 50 State 2000 Spiders (115.41) for 1980 with a starting engine number of 11684 A 90000. As a cross reference I have another ARI document from 1992 in Excel form for 1974 - 1986 that has 1980 2000 Spider with engine family 01684*A. 1981 Spiders had engine family BAR120V6AF1. So according to ARI, your mystery engine is from a 1980 2000 Spider Veloce.

Ciao,
 
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