1985 GTL

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Nutty
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Joined: Mon Jan 20, 2020 8:56 pm
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1985 GTL

Post by Nutty » Thu Jun 04, 2020 9:39 pm

Well this is turning into a bit of a project, having at first thought bought Nutty at auction several hundred miles away it seemed perfectly straight forward, change a few bits, and hey ho of we go. After timing belt, all oils, cam belt, front suspension, horn, windscreen wipers, washer, battery, fan belt, brake pads and disks, fuel lines, carburettor, vacuum hoses, electrical relays it has now come to the stage of taking the head off and seeing what is happening in there. After removal I found out the inlet manifold coolant channels are completely blocked, yes I mean completely, will make some photos and will try and post them. I did rig up a pressure tester and I think there is a problem with the inlet valve on cylinder 3, no further surprises (so far) apart from the stripped wheel bolt hole on the rear brake drum, I have probably forgotten some other minor troubles but as the Borg famously said resistance is futile even for a Scirocco.
The minor interior problems are not that important, cracked dashboard etc. and a bit of rust here and there also won't keep me awake at night, first of all lets get the mechanical bits up and running and the rest is just a matter of one problem at a time.
Quite a learning curve for a first time car tinkerer.


The first tool invented was a hammer, the second a bigger hammer

Walshy
Posts: 19
Joined: Mon Dec 09, 2019 11:41 am
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Re: 1985 GTL

Post by Walshy » Thu Jun 04, 2020 9:46 pm

Nice sounds like quite a project but will be worth it in the end. Get some pictures up of you can


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C 20 CCO
Posts: 161
Joined: Sat Jan 06, 2018 8:38 pm
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Location: Burnley, Lancashire.

Re: 1985 GTL

Post by C 20 CCO » Thu Jun 04, 2020 9:52 pm

I’m so glad I bought my 4th Rocco back in 2004; 13 years after it was first registered. It wasn’t in too bad condition. Although I think the lower part of the passenger door needs new metal.

And you say you’re a first time car tinkerer..... be patient. Tell us why a scirocco? And not an mgb or xr2 or jag XJS....


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kind regards,

Dave.

To be old and wise......
You must first be young and stupid!

In the garage : 2005 Volvo V50 2L D in brilliant blue metallic.
2011 Mazda2 Tamura in vibrant ebony metallic.
Prized possession- 1991 GT11 in Pearl green metallic.

Nutty
Posts: 21
Joined: Mon Jan 20, 2020 8:56 pm
fill in the right answer: 15

Re: 1985 GTL

Post by Nutty » Fri Jun 05, 2020 7:00 pm

That's the head removed and examined, I did a compression test a couple of weeks ago and No. 3 cylinder was down on compression, 14, 12, 9, 15, bodged a leak down tester, by my reckoning it was a problem with the inlet valve, I have had problems getting the carb to run leaner, whatever I tried it kept running rich, got it running quite well without the breather from the rocker cover attached but the moment the breather went on it was back to running like a dodgy tractor. I imagine the mixture from the inlet valve was added too the carb mixture with the air flow and causing the rich running. So make a valve compressor, then out with the valve grinding paste, and grind away.. According to a mate of mine it's that simple, yea right.
As to Dave's question, I wanted to buy a scirocco in 1984, was persuaded to buy a Passat instead (this was in Holland), the OH had a Scirocco whilst living in London in the 80's so it seemed like a good idea. Don't get me wrong we took it for a spin a couple of weeks ago and is was such fun apart from the fact that it would buck like a kangaroo under 2000 RPM, so over 2000 it was.
I will prevail in fixing the old (ish) beast but quite how it got an MOT is beyond me.
One other thing, I found a sort of restrictor in the coolant channel in the inlet manifold, any idea if this is necessary?
Oh and to what size do I have to reduce photos in order to publish on this site, and no, I don't have a phone capable of taking pictures.


The first tool invented was a hammer, the second a bigger hammer

GT_II
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Location: Warwickshire

Re: 1985 GTL

Post by GT_II » Fri Jun 05, 2020 8:45 pm

Nutty wrote:
Fri Jun 05, 2020 7:00 pm
I have had problems getting the carb to run leaner, whatever I tried it kept running rich, got it running quite well without the breather from the rocker cover attached but the moment the breather went on it was back to running like a dodgy tractor.
Just an idea on the rich running, in case there is a simpler explanation. I had the embarrassment of trying to adjust the mixture on my GT II while it was sitting in the MOT bay at Halfords during my first MOT. The further I screwed the mixture screw in to weaken the mixture, the higher the CO reading became. The engine was coughing and spluttering like crazy, the CO probe kept getting contaminated and the air in the workshop was smelling quite noxious. None of us could figure out what was going on so we gave up on it and they failed the car for "Emissions not tested".

The Haynes Scirocco manual was no help, but studying the detailed information of the 2E2 carb in the Haynes Solex and Pierburg carb manual, I discovered the mixture screw on the 2E2 carb operates in the opposite direction to every other carb. In other words, screw in to enrich the mixture, screw out to weaken it. This is because the screw controls the volume of air bleeding into the idle fuel channel, not the volume of fuel. With this information, I was able to set it up roughly "by ear" and fine tune it to VW's specification on Kwik-Fit's CO meter before they logged it on for the MOT retest a week or so later.



Nutty
Posts: 21
Joined: Mon Jan 20, 2020 8:56 pm
fill in the right answer: 15

Re: 1985 GTL

Post by Nutty » Sun Jun 07, 2020 10:52 am

Thank you for your suggestion GT II, I did find that bit of info about the mixture adjustment somewhere here on the forum, quite amazing the knowledge shared on this site, many thanks to all who supply the info for others to use.
Valve compressor works, won't win any prizes but I can live with that.


The first tool invented was a hammer, the second a bigger hammer

Nutty
Posts: 21
Joined: Mon Jan 20, 2020 8:56 pm
fill in the right answer: 15

Re: 1985 GTL

Post by Nutty » Thu Jun 25, 2020 7:18 pm

And the story goes on, valves re-ground, everything cleaned, head skimmed with 1200 grit wet and dry, cleaned up for it to be level and rust removed on the block, new gaskets, put it back together and fill up with coolant, aaahhhh that's where that washer goes, off with the head, remove inlet, fit washer thingy, refit head. refill with coolant, now leaking on the bi metal cup, bother, not done that before, ah well, try and start it never the less, not starting, fuel hose cracked just before fuel pump, fix that, and yes it starts and runs. Still having to sort the bi metal leak, seems to be missing an o-ring, never came out when I dismantled it.. The best investment made so far is the tool required to remove the "C" clips that hold the exhaust, what a b*stard of a job without, with it's a doddle.


The first tool invented was a hammer, the second a bigger hammer