I had the parts sand blasted prior to plating. So they were perfectly clean. However, some of them were very rusted, so there is some pitting where the worst rust was. The pitted areas did not come out as shiny, but should still be adequately protected.
1997 20vT Scottish green / sand grey
Re: Green barn find resurrection - Discussion
[Re: Mags]
#1663859 25/02/202318:0225/02/202318:02
Well, another setback. Not a big deal, but still annoying:
I was gonna install the oil drain plug, only to discover that the threads were literally falling apart. Maybe it had some insert already, I didn’t notice anything when I took it out.
What’s the best way forward? Helicoil or the next size bigger?
1997 20vT Scottish green / sand grey
Re: Green barn find resurrection - Discussion
[Re: Mags]
#1664039 09/03/202306:4009/03/202306:40
I need repair thread too. I think helicoil (V coil etc...) Is best solution because Coupé already have big thread and it is much stronger than aluminium. I'm going to do it next week, remove oil pan drill 18,5mm hole, make thread M20x1,5 and insert coil. And then apply new seal on pan and bolt it back.
Re: Green barn find resurrection - Discussion
[Re: Mags]
#1664062 10/03/202306:2110/03/202306:21
After replacing the cam belt, tightening the belt, rotating the engine over several times, re-checked the tension multiple times, I checked the timing again. It turns out that both cams are ever so slightly late. It makes sense really; the whole assembly settling in and the process of getting the tension right, has to affect timing.
How do I rectify this?
Ideally I would prefer to set the engine at perfect tdc, lock the cam gears, loosen the camshaft from the gear, and turn the camshaft forward until perfectly timed. Ideally I’d have the flywheel locked, too, and a place to put a spanner on the camshaft. Maybe I can use vice grips or fabricate a tool that fits over the end of the camshaft.
The other option would be to set the cams correctly, and turn the engine backwards. I’m not sure how well that’s gonna work. The belt pulling the wrong direction may mess up timing. I guess I could turn the engine beck too much, and then advance it to tdc, but there’s not that much wiggle room at the exhaust cam.
Maybe I should just leave it as it is. The timing is off by approximately the smallest amount I’m able to rotate the crankshaft.
1997 20vT Scottish green / sand grey
Re: Green barn find resurrection - Discussion
[Re: Mags]
#1664063 10/03/202309:3010/03/202309:30
It's important to have tension on the belt from the crank to the exhaust pulley, when that 18mm is loose you can turn the pulley slightly on the keyway which will take up the slack, I think this is the reason why it's timing up incorrectly.
Om my first attempt I got the timing a bit late, after getting some great advice from Joe Countrycruising a was able to time it better. Now it’s just a fraction early (see photo) . I’ll settle for this, since it’s better to be early than late ( as the belt settles in, it’ll make the cams time later.)
I suspect I’m more anal about the details than most.
1997 20vT Scottish green / sand grey
Re: Green barn find resurrection
[Re: Mags]
#1664125 15/03/202315:5115/03/202315:51
Honestly, I don't know. The nuts and bolts I sent off to a company that put them in a drum, that can do all at once. The larger bits I had yellow chrome plated at a different company, and they were hung individually. They came out way more yellow. The nuts and bolts are very original looking.
1997 20vT Scottish green / sand grey
Re: Green barn find resurrection
[Re: Mags]
#1664163 16/03/202310:5316/03/202310:53
Another small set back: when installing the sump drain plug, the threads literally started falling apart. I suspect there was an old Timesert in there.
I'm considering (drilling) tapping it to M20, any better suggestions?
1997 20vT Scottish green / sand grey
Re: Green barn find resurrection - Discussion
[Re: Mags]
#1664420 03/04/202310:5103/04/202310:51