What issues did the alfetta GTV turbodelta have?
Given it was Alfa's first production petrol turbo, I presume heat related - am interested as I have one and not experienced any issues but then again, car is not driven much
Hello Arguti maybe you have the red one bought in France few years ago. The GTV turbodelta used a KKK turbo which is not the best at spooling up or in terms of reliability. It also lacks an intercooler, the manifold is very crude and heavy, and the fuel supply is performed by a pair of Dellortos that is not as precise as injection and not easy to alter or setup.
Materazzi who developed the turbo engines of Lancia and Ferrari, notably for the 288 GTO and F40, made use of the then under contract the KKK turbo for the 208 Turbo of 1982 but switched to the Japanses IHI turbos for the 288 in 1983 with twin Behr intercoolers before it came out in 1984 after comparing both in design and build quality. The IHI's spooled up much faster and were produced with attention and fine tolerances. He then switched to a single IHI turbo and Behr intercooler for the GTB turbo of 1985/6 to superior effect. All these cars had injection and the 288 had bespoke digital electronic injection to better meter fuel.
The other aspect of the GTV turbodelta is that whilst this turbo was put in place no other alteration was made to braking or transmission or suspension (with option of stiffer rear springs and stiffer spica dampers). The increased torque at low revs puts added strain on the transmission couplings and gearbox and also the brakes but it was up to the owner to try to strengthen or improve them. This is Alfas way in not developing products.
It is rare-ish, not sure if it is the coolest or most desirable, I'd say these versions are the gtv8, autodelta, SA3.0, calloway, or the Chapparal. Personally I would prefer a 1982 gtv6 with magnesium wheels and air con, as that is the spec of my first car, so has a special place in my heart. The alfetta GT is cool though, and I don't need to go fast these days, but I'd swap it in a heart beat for an 82 gtv6.
The Alfetta GTV6 production number is 22,500. The Alfetta GT 1.8/1800 was 21,948 and many of these were not properly cared for unlike the GTV6 so far fewer exist today. THe initial GT 1.8 had a different front grille and had a body coloured fuel flap covering the fuel cap unlike all other GT/GTVs which had an exposed plastic fuel cap. The interior of the intial GT was also differently trimmed with a wooden steering wheel. Mechanically the initial 1.8 had more sporting non emission 10548 cams designed for that engine (but not available in export markets or after 1976) as standard and also had the option of the 20% ZF limited slip differential in 1974/5 which was not again available on a production Alfetta GTV/GTV6 again. The Alfa 75 twinspark and 3.0 were the next production cars to intorduce them.
All the Alfetta GTVs are underrated and great roads cars. However the initial 1.8 had the best 4 cylinder engine and had 50/50 weight distribution with low unsprung weight and rak and pinion steering unlike the 105 it replaced.
THe GTV6 is a great sounding car and had a reliable engine, great for touring freeways at high speed across continents. However as a sports car its engine weight made it much more nose heavy and a successful period racer in England mentioned substantial adjustments had to be made to lower the engine to make it remotely competitive on track. It also had to my eyes less attractive plastic fenders/bumpers and less appealing rear light design compared to the original with inferior paint quality also.
The CAlloway Alfetta twin turbos were made in very small numbers in the USA and were not Alfa approved.
Alfa ROmeo did not have the money to develop the Alfetta GTV and as one ex Alfa Romeo engineer pointed out in an interview his team lamented the fact it was not replace with a car on a new platform since they were all derivations of the same alfetta chassis developed in the late 60s and launched in 1972. Still a great car and head and shoulders above its period peers in my opinion,