For documenting and technical details of T25 restorations and major repairs
This section is for major restorations only.where to buy a panel or where to buy window rubbers belong in the bodywork seats and glass section.
Also please note,we need pictures of the restorations,without them posts are pretty useless.[\b]
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ajsimmo
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by ajsimmo » 04 Apr 2020, 13:23
DoubleOSeven wrote: These cheapo verniers are no use here, there is no way these pistons are 0,5mm under spec. @ 93.4mm Barrels all measure 94mm.
Pistons are wider below the rings, and should be measured near the bottom. My cheapies seem to be bang on.
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by ajsimmo » 04 Apr 2020, 13:28
Just to show I didn't cheat!
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by DoubleOSeven » 04 Apr 2020, 13:38
Ah, good stuff. Thank you.
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by DoubleOSeven » 04 Apr 2020, 13:43
1990 Volkswagen Transporter 2.1 Manual
2005 Porsche 911 3.6 Manual
2012 Volkswagen Polo 1.4 Automatic
ajsimmo
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by ajsimmo » 04 Apr 2020, 13:58
Those broken studs in the head. Do you have a tap & die set? If so just drill them out and clean up the threads. If you knacker the original thread (or it's already knackered), Heritage do a very useful step-down M10/M8 rescue stud.
https://www.heritagepartscentre.com/uk/ ... m8x38.html " onclick="window.open(this.href);return false;
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by DoubleOSeven » 04 Apr 2020, 14:11
Dishwasher had a go at head #2
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by DoubleOSeven » 04 Apr 2020, 14:17
I do have a tap and die set but I don’t have a pillar drill, so keeping it straight is my worry.
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by ajsimmo » 04 Apr 2020, 15:09
It's fairly easy with a hand drill by eye, and not super precision critical. Get a helper to "Golden Shot" you!
(For the whippersnappers here, "up a bit, left a bit, down a bit etc")
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by DoubleOSeven » 04 Apr 2020, 16:19
Had a crack at it...still at the 6.3mm drill stage
M8 x 1.25 TAP = 6.9mm drill bit
M10 x 1.25 TAP = 8.9mm drill bit
(Do I have these sizes; No)
Still, fairly productive day. I’ll keep going...
1990 Volkswagen Transporter 2.1 Manual
2005 Porsche 911 3.6 Manual
2012 Volkswagen Polo 1.4 Automatic
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by DoubleOSeven » 05 Apr 2020, 12:41
Lapped the valves in head No.2, took the fuel pump blank off and cleaned the oil pressure senders, blue & grey. Need new piston rings from Will now and a clutch check before re-assembly.
1990 Volkswagen Transporter 2.1 Manual
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by DoubleOSeven » 13 Apr 2020, 09:28
There is some surface rust on the inside of the barrels, so I’m trying some Electrolysis on them.
+12V 1.5A to anode. Barrels to cathode.
Few tablespoons of sodium carbonate in tap water.
1990 Volkswagen Transporter 2.1 Manual
2005 Porsche 911 3.6 Manual
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by DoubleOSeven » 13 Apr 2020, 12:45
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by DoubleOSeven » 19 Apr 2020, 13:28
Sometimes it’s best to walk away from something and come back to it later. Jumped on the x2 M8 threads today which required a drill & tap. Got them completed in 10 mins. Heads are ready now.
1990 Volkswagen Transporter 2.1 Manual
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by Wilber » 21 Apr 2020, 06:54
Doing a cracking job, honing tool will be with you this morning a piston rings are on order and should with you this week. Keep sane!
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by DoubleOSeven » 22 Apr 2020, 00:00
1990 Volkswagen Transporter 2.1 Manual
2005 Porsche 911 3.6 Manual
2012 Volkswagen Polo 1.4 Automatic