Manky's Pop.

[Manky Monkey]

Thanks mate. I could stay home in the warm all day -& might, depending on the weather & how knackered I am after delivering everybody else's Christmases, but need to start cracking on with this now.
Sanded the wrinkled paint down after work this evening, added another skim of filler, sanded that, sprayed a coat of the usual yellow spray filler -& it reacted again instantly.
Whatever's causing it is actually pushing the hardened filler up under the paint.

[Manky Monkey]

.

[Manky Monkey]

.

[Manky Monkey]

.

[Manky Monkey]

.

[jevi]

You haven't got a fine crack in the casing leaching oil have you?

[Manky Monkey]

That's something I hadn't considered. Hopefully not, but it'd be just my luck! These wrinkles just refuse to die.

[Manky Monkey]

Had a nice quiet Christmas Day afternoon in the garage today. Just pottering & listening to the radio. Archie stopped by, out for a ride on his chop -nice to see you mate, but otherwise all quiet in garage land.
With the heater on all afternoon, I blew a couple of very light dry coats of spray filler on the axle & only one small area seemed to react, although the rest will probably have wrinkled by tomorrow. Fingers crossed.
Then I started ferreting through boxes of parts, trying to piece together the brake pedal/master cylinder/servo set up so I can re-install it on the painted chassis in the cab.
It's been apart so long, I've forgotten where I've put some of the bits & how the brake pipes were routed.

[Dslam]

Its possible that the casting, being granular in nature, has some crud in the pores, or the casting is porous (not an issue under normal circumstances) I would sand the effected area and use methanol, Thinners or nail varnish remover on cotton buds and see what you can lift out. Some nail varnishes are good to use as a spot barrier in this sort of situation but the problem is finding one that doesn't react with the primer as they vary in their composition. I would start with clear. worth experimenting with though.

[jevi]

I'd be tempted to sand it back and try some localized heat to try drawing it out but I tend to use a big hammer to solve little problems 😁😁

[Manky Monkey]

I'll be hitting it with a big hammer if I can't fix it soon!

[Manky Monkey]

The aerosol of barrier paint arrived today, so I took it over to the garage -& found the paint finally seems to be behaving itself.
I warmed the axle as much as I could last time I was there, on Christmas Day, & sprayed 2 or 3 very, very light coats of filler primer & it appears to have settled without wrinkling. So now I'm kinda loathe to try the isolator paint in case it ruins it again. There's just one small area still lifting, so I've covered it with a thin skim of filler, (again), & tomorrow I'll gently sand that back, fill/prime it, then maybe be able to get a light coat of black on the whole diff housing.

[Manky Monkey]

Of course, it might well wrinkle again when I hit it with the black!

[Manky Monkey]

Apparently my older brother, who builds drag cars for a living, thinks I don't want to get the Pop finished because then I'll have nothing to do. Believe me, I desperately want to get it done, so I can get out & just drive & enjoy the damn thing. I refuse to bodge it, just to get it back together though. Once it's road worthy it'll probably never get stripped down this far again, so I want to get it as "right" as I can now, rather than wishing I had later.
I've been collecting parts to put the brake system back together, so made a start this afternoon by bolting the new VW master cylinder, (supplied by Archie who works at Just Kampers), to the chassis under the drivers floor. The original had corroded quite badly, so I've sprayed this one in clear lacquer. It has the proper blanking plugs in the ports I don't need, instead of just old brake light switches with the terminals cut off as before, (we built it in a hurry), & I've refurbished & powder coated the cover I made last time around, which clamps the push-in hose spigots in place, (they had a habit of popping out under pressure).
Now I've got to figure out how the pipework was routed last time.

[stinkey]

Your brother has got a point 🤣
At least you can carry on with other bits?