Author Topic: South African 3 Litre GTV6  (Read 13130 times)

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Henry Goodman

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Re: South African 3 Litre GTV6
« Reply #45 on: February 10, 2019, 12:21:04 PM »
Hi John and thanks for the reply. I gather the limited production number is listed in the owners manual? Fantastic that you have these with the car.
We have the NSW club President's Run in a couple of weeks so it would be awesome to have it along. Special note also to DNA Dave to bring one of his beasts along. We read so much about these special cars and it would be great to have them along and allow them to stretch their legs and lungs.  ;D ;D ;D
Cheers,
Henry.

carlo rossi

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Re: South African 3 Litre GTV6
« Reply #46 on: February 15, 2019, 09:55:51 AM »
Love it if you would put your cars om the
Register under 116 register
Thanks gg
current cars
red 83 gtv 2.0


previous cars
Red 76 1.2/1.5 alfasud ti
white 79 alfetta 2000
alfetta 74 1.8
escort Lotus twin cam
bikes
ducati 900 ss 1979
moto morini 3 1/2 sport 1975/6
Moto morini 3 1/2 valentini speciale 77 oh and a deltek rockhopper

GG105

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Re: South African 3 Litre GTV6
« Reply #47 on: April 20, 2019, 06:10:28 AM »
Had intentions of taking the GTV6 to Auto Italia. However, the car had other ideas, specifically the immobiliser failed and of course I couldnít start it. With hindsight, I should have removed it when the car was being rebuilt, but there were so many other things to fix that this slipped through. So I took my faithful Giulia instead.

It has now been removed and I took it for a run yesterday. The power steering transforms the car. It steers nicely, and in combination with the ball joint risers, youíre not aware of the extra weight in the front, as with my previous 2.5s. Ride is good, its noisier than my previous cars, mainly I think because of the extractors, intake noise isnít pronounced. I owned a 2300S Fiat for some years, vintage to drive but the intake noise from the twin 38mm Webers was fantastic.

Apart from some trim that needs tidying, theres only one major job to do, the dreaded Alfetta tailshaft vibration. Its not bad, but its there. We chased this for months in my previous car.

Other than this, and a slightly lumpy idle from the big cams, it is very civilised. Now, if I could just find some bumpers that arenít warped ;D
1961 Giulietta Sprint
1969 GT 1300 Junior
1970 Giulia 1300 TI - modified
1984 SA GTV6
1963 Ford Falcon Futura Convertible
1985 BMW 635 CSi
1990 Mazda MX5
2003 Porsche 911 Carrera 4S
2005 BMW 330Ci

GG105

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Re: South African 3 Litre GTV6
« Reply #48 on: September 14, 2019, 08:00:40 AM »
We continue to refine the GTV6. The interior is now finished. The SA cars have different seat runners to ours, when flipped forward they return to the original position. This leads to a complicated and very tall runner. We have removed these and reverted to the standard runners, thus lowering the seats, the height adjustment remains.

We have remade the sun visors, replaced the seat foam, while retaining the original covers, replaced the piping, installed the correct interior door handles (the drivers one was out of a Japanese car of some sort with a chrome handle!) and surrounds and made a dash mat and rear seat top cover.

I see some discussion about door seals elsewhere here. Those on my car are toast. I have been loathe to replace them as I couldnít close the doors on a previous GTV6. However, as they now yell at the interior, I have bitten the bullet and purchased a set from Elvizio in Italy. They donít have the flocking as per the originals, Iíll report back on whether they work.

Weíve also been doing a fair bit of mechanical tidying. I have converted the car to isostatic, a bit tricky because of the different rear crossmember, but its done. The front half of the tailshaft proved to be bent (!). This was a mission to fix, I had to buy a complete shaft from a sedan and use the front half with the original rear half. Its now in and balanced. It has a new single plate clutch, which is not quite right as the takeup was very high. Weíre working on this.

Weíre not happy with the big cams that were in the car, they made the idle lumpy and low end smoothness was lost. Accordingly, weíve ordered a set of Potenziata cams from Vin Sharp. These should sort this. New lower control arm bushes have also been installed, we missed this earlier.

And finally....the small triangular end piece was missing from the drivers side gutter mold. A complete replacement mold, with end piece, is on its way. Shipping is stupid expensive because of the length. I guess we could have cadded one but there it is.

Iíll provide a full roundup when its done...
1961 Giulietta Sprint
1969 GT 1300 Junior
1970 Giulia 1300 TI - modified
1984 SA GTV6
1963 Ford Falcon Futura Convertible
1985 BMW 635 CSi
1990 Mazda MX5
2003 Porsche 911 Carrera 4S
2005 BMW 330Ci

GG105

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Re: South African 3 Litre GTV6
« Reply #49 on: November 23, 2019, 09:40:56 PM »
Hi all.

As I foreshadowed the car has been converted to Isostatic, a big improvement. We have installed potenziata cams which are friendlier than the ones that came in the car.

Weíve had lots of clutch problems, it seems the ones supplied by Sachs are not the same as the originals....

Finally however, its pretty much done. The combination of power steering, isostatic and ball joint risers has dealt with most of the classic GTV6 driving issues. Its grunty, quick and drives well and the sound is fabulous.

Of course, the replacement door seals are crap. I was assured they would work well, they donít.

Cheers
John

1961 Giulietta Sprint
1969 GT 1300 Junior
1970 Giulia 1300 TI - modified
1984 SA GTV6
1963 Ford Falcon Futura Convertible
1985 BMW 635 CSi
1990 Mazda MX5
2003 Porsche 911 Carrera 4S
2005 BMW 330Ci

MattGTV6

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Re: South African 3 Litre GTV6
« Reply #50 on: December 28, 2019, 09:36:47 PM »
I found a supplier for the original style velour backed door seals. I have 3 original 3l GTV6 myself.  Can discuss in a PM.

GG105

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Re: South African 3 Litre GTV6
« Reply #51 on: April 17, 2020, 08:04:10 PM »
Had some issues with paint on the bonnet, solvent was bleeding through, also some filler on the drivers door. Both dealt with, the car looks fantastic.

True to form, this thing fights me all the way. Parked it to find a puddle of atf under the car. Turns out the seals on the powered rack have failed after less than 1,000 kms. Apparently this is a known problem. The rack and pump have gone back to QLD for new seals. Some suspicion the pressure relief valve in the pump may be faulty.

We also changed the cams back to 164Q items to make it behave better at idle and low speed, with a significant improvement, though not complete success. Long story short, apparently its about the need for carbureted engines to have cams to suck well. Injected engines donít have this requirement. We would like to obtain a set of cams from a Euro six carb Alfa 6 to see how the factory dealt with low speed smoothness and the transition from idle to the power circuit.

Its easy to see why Alfa went to injection on the V6. Given that these SA engines were race engines, general drivability wasnít important.
1961 Giulietta Sprint
1969 GT 1300 Junior
1970 Giulia 1300 TI - modified
1984 SA GTV6
1963 Ford Falcon Futura Convertible
1985 BMW 635 CSi
1990 Mazda MX5
2003 Porsche 911 Carrera 4S
2005 BMW 330Ci

GG105

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Re: South African 3 Litre GTV6
« Reply #52 on: May 09, 2020, 05:37:11 PM »
The power steering issue is sorted. Mick at Corse Automotive, perfectionist that he is, spent a lot more time on the carbs while he had the car, its now the best its ever been, the transition hesitation is gone, it starts better and is more lively.

I also went back to future. Each of the five Alfetta GTVs Iíve owned have had the original steering wheel, this one included. However, the addition of power steering to this car, has given me the opportunity to reconfigure the steering wheel position. As we all know there is no better illustration of the Italian ape driving position than an Alfetta GT/GTV. To get to the wheel you end up with your right knee under the armrest.

Because I have ps in this car, I can play with the wheel. We have put a slightly smaller smaller, 380mm wheel on as a test, with a longer boss and deeper dish. This allows me to get further away from the pedals with the wheel within reach. Its a great improvement, I just need a nicer wheel 8)

Ignoring for a moment the six carbs, there are two things weíve done that have transformed this car in ascending order, isostatic and power steer. This latter upgrade has allowed changing the driving position and transformed the car. Its now what the factory should have done.

1961 Giulietta Sprint
1969 GT 1300 Junior
1970 Giulia 1300 TI - modified
1984 SA GTV6
1963 Ford Falcon Futura Convertible
1985 BMW 635 CSi
1990 Mazda MX5
2003 Porsche 911 Carrera 4S
2005 BMW 330Ci

Anth73

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Re: South African 3 Litre GTV6
« Reply #53 on: May 10, 2020, 05:44:30 PM »
My GTV was fitted with a spacer by a previous owner which Iím thankful for. Despite my Italian heritage Iím proportioned in a most un-Italian way which generally means all modern cars I drive with telescopic steering adjustment has the steering wheel pulled out all the way.

Power steering from a 75 is on my upgrade list too. I just donít like the steering load during sharp cornering and the parking effort with the sports steering wheel and 205 tyres.
« Last Edit: May 12, 2020, 05:26:11 AM by Anth73 »

GTVeloce

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Re: South African 3 Litre GTV6
« Reply #54 on: May 10, 2020, 07:16:59 PM »
I highly recommend the Nardi leather wrapped wheel. I have a dished version plus a boss that is slightly longer than standard. It is 360mm in diameter.

LukeC

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Re: South African 3 Litre GTV6
« Reply #55 on: May 10, 2020, 08:53:55 PM »
Quote
Parked it to find a puddle of atf under the car. Turns out the seals on the powered rack have failed after less than 1,000 kms. Apparently this is a known problem.

This happen to mine too after I overhauled the rack... Not a big fan of additives, but thought I would try some Power Steer stop leak before pulling the rack.... 9,000 km later and not one drop!
Luke Clayton

qvae.com.au

GG105

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Re: South African 3 Litre GTV6
« Reply #56 on: May 31, 2020, 08:40:58 PM »
Here is the dished 350mm temporary on the car. A big improvement, Iíll get a permanent one.

1961 Giulietta Sprint
1969 GT 1300 Junior
1970 Giulia 1300 TI - modified
1984 SA GTV6
1963 Ford Falcon Futura Convertible
1985 BMW 635 CSi
1990 Mazda MX5
2003 Porsche 911 Carrera 4S
2005 BMW 330Ci

FredrikAssarsson

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Re: South African 3 Litre GTV6
« Reply #57 on: June 27, 2020, 01:53:43 AM »
Hi! Read through your thread and was quite interested because Iíve embarked on building an homage to Arnold Chatzí Berlina race car (í70-72) that won the African touring car championship.
(https://www.alfapower.nu/viewthread.php?tid=34903)

My version is going to have a 3.0 12v 75/Sei carburated Frankenstein engine though. Mostly for the fun of it. Itís basically going to be a similar engine to your version of the SA 3.0 with 164Q cams and ported heads however Iím curious to know what size valves were used in your engine. All info online says Ēlarger intake valvesĒ but no info on which actual size so Iím asking: whatís the size man?  ;D

Also where did you source parts for the carbies? Any hints you can give to keep me from reinventing the wheel when I get my 3.0 to work on Sei heads and dellorto carbies?
What was the trick to start clearing up hesitation issues from idle to progression when using ĒfunnerĒ cams?

Love your build so keep it up!
« Last Edit: June 27, 2020, 01:56:03 AM by FredrikAssarsson »