Author Topic: 1982 GTV renovation  (Read 10209 times)

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festy

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Re: 1982 GTV renovation
« Reply #60 on: September 17, 2020, 07:12:50 PM »
Is it an EPROM or an E2PROM?  Re EPROM's (with the glass window), in addition to a bit of static protection, work on any EPROM should not be carried out under fluorescent lighting unless the EPROM label is foil backed.  Repeated exposure to UV will corrupt the memory.
The original memory ICs are EPROMs in the Motronic ML 4.1, with a metallic film sticker covering the die window.
The replacement IC that was installed is a flash type, so is pretty hardy.

Colin Edwards

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Re: 1982 GTV renovation
« Reply #61 on: September 18, 2020, 08:51:22 AM »
28CXXX series in lieu of 27CXXX series?
Present
2020 Giulietta Veloce
2018 Abarth 124 Spider
1987 75 3.0

Past
2015 Giulietta QV
2009 159 3.2 Ti Q4
2012 Giulietta TCT Veloce
2006 147 Ti 2 door Selespeed
1979 Alfasud Ti 1.5

festy

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Re: 1982 GTV renovation
« Reply #62 on: September 18, 2020, 09:42:20 AM »
The original EPROM used in the ML4.1 was an Intel B57604, which is a Bosch custom part number for an Intel D27256-200. Almost all the ICs in the ML4.1 have custom Bosch part numbers, which makes reverse engineering a whole lot of fun :(
By the time the 3.0 164 was released they might have switched to using 27C256 though.
The replacement is an SST 27SF512.

Anth73

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Re: 1982 GTV renovation
« Reply #63 on: December 10, 2020, 05:29:13 PM »
Sorry itís been a while between updates. You know the drill...work commitments, lack of time, etc. But Iíve also reached the point of not being able to do much more myself and waiting patiently for COVID restrictions to lift. Also, thereís been another GTV6 engine conversion being done by Monza Motors to complete ahead of mine. I wonít be a spoiler other than to say itís a rip snorter and well worth the time and expense. Just click on over to gtvsix86ís thread for all the info.

The delay on my project has been fruitful. Scanning eBay and Gumtree every day finally yielded the equivalent of the holy grail in the form of a fully intact and functioning passenger side mirror.

With said mirror now secured I set about fixing up the wiring and installing the electric mirror switch I bought from fellow forum member GTVeloce. Being an Ď82 model the car was not wired from the factory for a passenger side mirror. However, somebody had previously tried to wire it in and made a bit of a mess of it with wires pulled from the back of the existing 6-pin plug below the centre console and a dodgy attempt to connect the ground wire for the mirror into an existing ground.

Thankfully thereís quite a few articles online on the topic of wiring in a second mirror, so that was a pretty easy fix. I also decided to provide the ground via the existing bolt that secures the dash to the firewall, same as for the drivers side. Unfortunately the passenger mirror didnít come with the factory plugs, a couple of 2-pin plugs from Supercheap were an easy replacement.

With both mirrors temporarily connected I confirmed they were both working, however strangely rotating the mirror switch selector to the left actually results in the driver side mirror being adjusted and vice versa. I confirmed the mirror switch and plug wiring is correct against multiple images online. Itís an easy fix to swap over the left and right control wires next time Iím playing with the wiring.

GTVeloce had also given me the black plastic conduits for the door jambs, I only need to procure the rubber seal where it clips into the door jamb to provide a watertight seal.

Next instalment should be once the car is finally at the Monza Motors workshop, which should be next week. Meanwhile hereís a few pics of the wiring mess I started with, the corrected wiring in the 6-pin plug, the ground point under the dash and the mirror side wiring just prior to installing the two 2-pin plugs.
« Last Edit: December 12, 2020, 05:11:25 PM by Anth73 »

GTVeloce

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Re: 1982 GTV renovation
« Reply #64 on: December 12, 2020, 10:10:37 PM »
I might have a couple of the two pin plugs spare. I'll have a look. These are the ones that 'socket' into the door metal, yes?

Otherwise, great work as always! Bring on the V6!

Anth73

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Re: 1982 GTV renovation
« Reply #65 on: December 14, 2020, 09:34:17 PM »
I might have a couple of the two pin plugs spare. I'll have a look. These are the ones that 'socket' into the door metal, yes?

Otherwise, great work as always! Bring on the V6!

Thanks Julian. Yes they are the plugs that socket into the door. The mirror I bought didn't have them and neither does the wiring loom.

Anth73

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Re: 1982 GTV renovation
« Reply #66 on: December 22, 2020, 05:28:32 PM »
A couple of smaller odd jobs I finally managed to get to was replacing both door seals and refitting the centre console with the mirror switch and a new gear lever boot.

The 80's plastic of the centre console took some fiddling to line up correctly and accommodate the wiring for the electric mirror switch and cigarette lighter. I actually would like to replace the cigarette lighter with a dual USB socket but could not work out how to disassemble and remove the cigarette lighter. Anyone have any tips?

The new door seals with the velour backing went on easy enough, though I suggest using a rubber mallet instead of your hand to get it properly seated to save some pain. The doors are harder to close and the panel gaps are a little wider with the new seals. Hopefully they settle down with time.

I dropped off the last of my parts to Monza Motors and confirmed the GTV will be going into the workshop once opened in the first week of January.

I also popped into Rankins Panels and had a really nice chat with Paul Rankin about my GTV. He confirmed it was Damian Black's GTV and they treated it to a bare metal restoration about 15 years ago. Looking forward to getting on with the next phase of work in January!
« Last Edit: December 22, 2020, 05:31:42 PM by Anth73 »

GTVeloce

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Re: 1982 GTV renovation
« Reply #67 on: January 01, 2021, 08:50:16 PM »
To get the cigarette lighter you usually have to remove the light first. Squeeze the metal surrounding the light and the tabs can then pop out of the main housing. Then, unscrew the metal sheath. This will allow the unit to withdraw upwards and out (provided you have disconnected the wires of course!)

Anth73

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Re: 1982 GTV(6) renovation
« Reply #68 on: May 26, 2021, 09:54:14 PM »
Well after many false dawns finally(!) the road to 3L GTV6 ecstasy starts this week with the removal of the existing twin spark motor. Iíve asked the team at Monza Motors to document the transplant with photos along the way. Not sure on timing to complete the work as it will also involve a tidy up of some body bits and pieces by Paul Rankin, who did the original bare metal restoration in the mid 2000ís.

The full list of work being done is:
- 3L from an Alfa 75 with 10:1 pistons, C&B road max cams, new seals and water pump
- Bosch Motronic 4.1 injection with 164Q map
- EB Spares stainless steel exhaust with ceramic coated headers
- GTA 305mm twin piston front brakes
- New clutch
- Alfa 75 A/C with new parallel flow condenser
- EB Spares aluminium radiator
- Twin cooling fans from a 916 3L GTV V6
- Cleaned and POR-15 coated GTV6 fuel tank (doing this was better strength building than multiple gym sessions!)
- 120A Bosch alternator
- Car Builders firewall insulation
- New fibreglass bonnet
- Refreshed front and rear vents
- Passenger side door mirror
- Borbet 16x7.5 wheels

Look out for photo updates as we go!
« Last Edit: June 11, 2021, 05:57:45 PM by Anth73 »

gtvsix86

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Re: 1982 GTV renovation
« Reply #69 on: May 27, 2021, 11:00:58 AM »
Looking forward to it, it will be awesome.... I hope you don't hit any snags along the way like I have 

Anth73

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Re: 1982 GTV renovation
« Reply #70 on: June 08, 2021, 01:14:48 PM »
A milestone achieved today with the twin spark that has lived under my GTV's bonnet since 2005 removed and the engine mounts cut out ready for the 3L V6 mounts to go in their place. Next step is getting the car down to Rankins for engine bay paint.
« Last Edit: June 11, 2021, 05:58:41 PM by Anth73 »

GTVeloce

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Re: 1982 GTV renovation
« Reply #71 on: June 08, 2021, 04:37:02 PM »
Exciting news! I was just looking at my V6 today thinking I really need to get cracking on it soon and then this inspiration has come.

Anth73

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Re: 1982 GTV renovation
« Reply #72 on: June 11, 2021, 06:14:49 PM »
A setback today with the news that the V6 engine mounts that Monza Motors had planned to use were unfortunately buggered. Theyíre trying to track down another donor car but theyíre pretty scarce. PM me if you know of a donor car.

In other news I confirmed Hugh has a 164 engine loom put aside for me, might even be off a Q car. So in that case it makes sense to use the 164Q EEPROM that Festy provided in place of the 75/SZ dual personality chip I had fitted to the 164 ECU....that wouldíve been damn interesting to try out!

On the plus side I can use the 164 idle air control instead of the troublesome auxiliary air valve. I also scored a genuine 164QV air flow meter from the US. This is identified by part 0280203035 and apparently the biggest Alfa fitted to a 12V V6.

Another puzzle Iím trying to sort out is if the CSC headers I bought from EB Spares fit with the standard starter motor. There are some threads on Alfabb that suggest a later smaller starter motor is required. Photos attached below, thoughts anyone?
« Last Edit: June 11, 2021, 06:55:24 PM by Anth73 »