ALTA bits

for those with Series MM sidevalve cars produced between September 1948 and February 1953

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RobThomas
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ALTA bits

Postby RobThomas » Sat Jan 14, 2017 6:43 pm

First 'sample' has arrived for machining.
Attachments
altapipe1.jpg
altapipe1.jpg (108.34 KiB) Viewed 1028 times

youngcamper
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Re: ALTA bits

Postby youngcamper » Sat Jan 14, 2017 7:09 pm

Looking good! :)
Will
ImageImageImage
________1967-Lily________________________1963-Phoebe_______________________1965-Dobby_________

RobThomas
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Re: ALTA bits

Postby RobThomas » Sat Jan 14, 2017 7:33 pm

Yeah, not bad. I need to open out the inner bore to the right size and drill the mounting holes before making good the flange where it sits on the head. If it all fits OK then I can get the other 5 made.

Shouldn't be long.

Next job is that rocker cover.

Rob

RobThomas
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Re: ALTA bits

Postby RobThomas » Mon Jan 30, 2017 12:27 pm

Alta head is off for a leaking valve. Good news is that there is almost zero corrosion, the valves and associated gear look to be in mint condition and the bores are +40 with little sign of any wear at all. Phew!

I need some new head studs and nuts and some Shellac to seal the head stud covers to the block. Is there a modern replacement material?

Sleeper
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Re: ALTA bits

Postby Sleeper » Mon Jan 30, 2017 1:03 pm

Wellseal

John :wink:

RobThomas
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Re: ALTA bits

Postby RobThomas » Mon Jan 30, 2017 3:26 pm

Ahhhhh, the VW engine casing stuff. Thanks.

RobThomas
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Re: ALTA bits

Postby RobThomas » Mon Jan 30, 2017 5:59 pm

altr5.jpg
altr5.jpg (156.37 KiB) Viewed 966 times
ALTR4.jpg
ALTR4.jpg (107.12 KiB) Viewed 966 times
aLTR3.jpg
aLTR3.jpg (156.48 KiB) Viewed 966 times


Oops. Spoke too soon. Mostly it is in great nick but there is one area of corrosion where it looks like there has been some localised boiling next to the rear spark plug hole. Bu66er!

philthehill
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Re: ALTA bits

Postby philthehill » Mon Jan 30, 2017 7:58 pm

Rob
Bad luck.
Unless you can be sure that welding is not going to distort the casting I would be tempted to clean up the corrosion and use some heat resistant aluminium putty to effect a repair.
I have not used this product but it seems to tick all the boxes.
http://www.prkntekindia.in/index.php/pr ... al-casting
Phil


RobThomas
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Re: ALTA bits

Postby RobThomas » Mon Jan 30, 2017 8:36 pm

The corrosion looks like it might go right through to the spark plug hole and into the chamber so it'll have to be a weld. I assume Birmidal is a high-silicon ali and will weld with 4043 rods but have got someone checking for me. If I'm careful I can weld just enough to get the strength back near the plug hole and then use something like Lumiweld if there are any last bits needing filler.
I did look at some Belzona repair putty but it is still only goes for about 220 degrees C, like that other stuff. Might get hotter than that near the plugs?

Wife is out tomorrow. Head going in the dishwasher!

RobThomas
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Re: ALTA bits

Postby RobThomas » Thu Feb 02, 2017 8:35 am

Just got a quote for a batch of Alta valves. Anyone need some?

TvdWerf
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Re: ALTA bits

Postby TvdWerf » Sat Feb 11, 2017 4:30 pm

20170211_130605a.jpg
20170211_130605a.jpg (138.5 KiB) Viewed 913 times

Also this Alta is missing the water pipe....
So can I put my name on the list?
MM '51 LHD sidevalve

RobThomas
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Re: ALTA bits

Postby RobThomas » Mon Feb 13, 2017 8:25 am

Might be a bit too late to get another one added to the production line. I'll try when I next speak to the casting company.

Next order for them won't be for another 50 years!

Alternatively, I can make them from welded-up sections, or you could sell me the Alta you've got???? :D

RobThomas
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Re: ALTA bits

Postby RobThomas » Mon Sep 11, 2017 2:18 pm

Final invoice has come in for the Alta water castings. It works out at £58.20 including postage to the mainland UK. They are spoken for, so long as everyone who wanted one still wants them. There is now one more person wanting a casting if someone wants to drop out.

Cheers

Rob


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