For Sale ULTRA-RARE Set of 7J (!) x 14" Maifrini Mille Miglia's mag/alu alloy - Page 2 - Alfa Romeo Bulletin Board & Forums
 5Likes
Reply
 
LinkBack Thread Tools Display Modes
post #16 of 21 (permalink) Old 05-13-2019, 07:42 AM
Registered User
 
Join Date: May 2003
Posts: 1,957
Quote:
Originally Posted by PocketAce View Post
I have a 14x5.75 set, they fizzle nicely under vinegar. Definitely a mag+alu alloy.
a pretty darn easy way to guesstimate the amount of mg in the wheel is how dark untreated areas get. if its has high mg content it becomes dark grey from exposure like the sexy gta/gtam autodelta mg valve covers and bellhousing.


https://picclick.co.uk/De-Tomaso-Pan...137384373.html

you can see how dark they get...
davbert is offline  
Sponsored Links
Advertisement
 
post #17 of 21 (permalink) Old 05-13-2019, 09:46 AM
Registered User
 
IRONBLOCK's Avatar
 
Join Date: Feb 2008
Location: Georgia
Posts: 3,575
Garage
I've had a set of MM's between two spider(s) for about 37 years now. They were left outside for a year or two by the previous owner and they were very nasty and corroded. They were just like the gnarly Pantara wheels someone posted but they cleaned up well and have had no issues other than a thin black film that needs periodic polishing to remove. I suspect these wheels must have a small amount of Mg in the Al alloy.

When new these wheels came with a chromate conversion type of coating that offered some degree of corrosion protection. I have one 'spare' (that I am using) that has almost always remained in a spare tire well and the thin conversion coating is intact and exhibits a slightly gold-ish tint.

Sometimes powder coating Al/Mg wheels can result in undesirable side effects (blisters and corrosion) -if the wheel is not properly prepared, coated and cared for.

Mark

Quote:
Originally Posted by davbert View Post
mag/alum perhaps. i have a set of on my car MMs on my gtv for 28 years. unlike yours mine are unpainted they way they came from the manufacturer. i still shows no signs of corrosion.

i have vintage campys and cromodoras and bbs e50 mg wheels in dry heated storage. they show signs of corrosion on the unpainted faces just sitting indoors. if the MM really are mg its content percentage must be minuscule

never the less 7x14 MM are to die for!
IRONBLOCK is offline  
post #18 of 21 (permalink) Old 05-13-2019, 01:17 PM
Registered User
 
Join Date: May 2003
Posts: 1,957
hey mark

i think i got my set in 87... that makes it 32yrs? time really flies. still behind you though :-)
davbert is offline  
Sponsored Links
Advertisement
 
post #19 of 21 (permalink) Old 05-13-2019, 02:06 PM
Registered User
 
IRONBLOCK's Avatar
 
Join Date: Feb 2008
Location: Georgia
Posts: 3,575
Garage
Dave, I got my set for F R E E -just had to pick them up! I was still a school boy then so it must have been 1982-ish.

I remembered seeing this thread about mag wheels and may have to try some 'Gibbs' on my polished MM wheels to tone down the unpolished areas a little; may even try the graphite as well.

https://www.jalopyjournal.com/forum/...ration.247870/

Mark
davbert likes this.
IRONBLOCK is offline  
post #20 of 21 (permalink) Old 05-13-2019, 04:24 PM
Registered User
 
Join Date: May 2003
Posts: 1,957
Mark , wow great story... I’m glad they went to a true Alfisti !
davbert is offline  
post #21 of 21 (permalink) Old 05-13-2019, 06:01 PM
Registered User
 
Trich's Avatar
 
Join Date: Jan 2013
Location: El Cerrito, CA
Posts: 261
PM coming your way

My "rejuvenation" blog: http://65tomfoolery.wordpress.com
'65 Alfa Giulia Sprint GT, a long way to go still….
Trich is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Alfa Romeo Bulletin Board & Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
ULTRA-RARE - Set of 7J (!) x 14" Maifrini Mille Miglia's MAGNESIUM wheels phbeckers Alfa Romeo Parts For Sale & Wanted 35 06-12-2019 01:37 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome