Fairchild Club Forum

Posted: **Thu Sep 02, 2004 7:35 pm**

'Hi all,, anyone know the details of the magnesium alloy on the valve
cover?

thanks

Mike'

Posted: **Thu Sep 02, 2004 8:04 pm**

'Mike,
I am assuming that you are asking about restoration?
If so...
I fully-restored my Father's Ranger engine.
First, remove the pick-up tube and clamp. Next, we stripped the old
paint, washed the oil off with mineral spirits, and steam-cleaned
cover inside and out.
Dupont makes an excellent Acid Etch solution, to be followed with
Alodine and fresh water rinse. (Inside and out)
Follow the directions carefully, and keep your session shorter than
usual (as compared with aluminum parts) since the magnesium is prone
to damage if subjected to the acid for too long a period of time.
Once the part was totally clean, we sprayed a thin coat of zinc-
chromate primer onto the outer surface, then followed that coating
with Polyfiber's Epoxy Chromate. After that was cured, we finish-
painted with Imron. If that procedure sounds like over-kill, you are
probably correct. Our motto: "Only the best for our flying machines!"
Greg

--- In fairchildclub@yahoogroups.com, "Mike Bourget"
wrote:

> Hi all,, anyone know the details of the magnesium alloy on the

valve

> cover?
> thanks,
> Mike

'

Posted: **Fri Sep 03, 2004 7:55 am**

'HI Greg,, partially correct. The engine was completely restored and
zero timed (for experimental) in 96 and pickeled. It fell and
cracked the valve cover case. I have a spare engine I can replace
the cover with, but want to try and weld the valve (cam shaft) cover
first, save alot of time. If its ruined, nothing ventured nothing
gained. Then I'll take the old cover/and assembly, the broken cover
and assembly to N.Y or P.A. and get her reassembled.

The aviation welding co. would like to know what the alloy is to
determine the weld process.

cheers

Mike

--- In fairchildclub@yahoogroups.com, "purplewhite1978"
wrote:

> Mike,
> I am assuming that you are asking about restoration?
> If so...
> I fully-restored my Father's Ranger engine.
> First, remove the pick-up tube and clamp. Next, we stripped the old
> paint, washed the oil off with mineral spirits, and steam-cleaned
> cover inside and out.
> Dupont makes an excellent Acid Etch solution, to be followed with
> Alodine and fresh water rinse. (Inside and out)
> Follow the directions carefully, and keep your session shorter than
> usual (as compared with aluminum parts) since the magnesium is

prone

> to damage if subjected to the acid for too long a period of time.
> Once the part was totally clean, we sprayed a thin coat of zinc-
> chromate primer onto the outer surface, then followed that coating
> with Polyfiber's Epoxy Chromate. After that was cured, we finish-
> painted with Imron. If that procedure sounds like over-kill, you

are

> probably correct. Our motto: "Only the best for our flying

machines!"

> Greg
>
>
>
>
> --- In fairchildclub@yahoogroups.com, "Mike Bourget"
> wrote:
> > Hi all,, anyone know the details of the magnesium alloy on the
> valve
> > cover?
> > thanks,
> > Mike

'

Posted: **Fri Sep 03, 2004 8:34 am**

'Mike,
Unfortunately, I do not have any info on the alloy or I could be of more
help.
My welder here, who has done plenty of magnesium, is more concerned about
the oil contamination when welding.
He suggested baking the oil out 1st. He couldn't give me a temperature to
pass on to you because he used to take his stuff to an F.B.O. where they
knew what to do with respect to heating the oven.
Either way, we wish you the best!
Have a great day!
Greg'

Posted: **Sat Sep 04, 2004 9:00 am**

'Mike,
I have a spare cover I would sell it may save you allot of time and money.
if interested let me know.

John Berendt
Fairchild Club

----- Original Message -----
From: "Mike Bourget"
To:
Sent: Friday, September 03, 2004 8:54 AM
Subject: [fairchildclub] Re: Ranger magnesium alloy?

>
> HI Greg,, partially correct. The engine was completely restored and
> zero timed (for experimental) in 96 and pickeled. It fell and
> cracked the valve cover case. I have a spare engine I can replace
> the cover with, but want to try and weld the valve (cam shaft) cover
> first, save alot of time. If its ruined, nothing ventured nothing
> gained. Then I'll take the old cover/and assembly, the broken cover
> and assembly to N.Y or P.A. and get her reassembled.
>
> The aviation welding co. would like to know what the alloy is to
> determine the weld process.
>
> cheers
>
> Mike
>
> --- In fairchildclub@yahoogroups.com, "purplewhite1978"
> wrote:
> > Mike,
> > I am assuming that you are asking about restoration?
> > If so...
> > I fully-restored my Father's Ranger engine.
> > First, remove the pick-up tube and clamp. Next, we stripped the old
> > paint, washed the oil off with mineral spirits, and steam-cleaned
> > cover inside and out.
> > Dupont makes an excellent Acid Etch solution, to be followed with
> > Alodine and fresh water rinse. (Inside and out)
> > Follow the directions carefully, and keep your session shorter than
> > usual (as compared with aluminum parts) since the magnesium is
> prone
> > to damage if subjected to the acid for too long a period of time.
> > Once the part was totally clean, we sprayed a thin coat of zinc-
> > chromate primer onto the outer surface, then followed that coating
> > with Polyfiber's Epoxy Chromate. After that was cured, we finish-
> > painted with Imron. If that procedure sounds like over-kill, you
> are
> > probably correct. Our motto: "Only the best for our flying
> machines!"
> > Greg
> >
> >
> >
> >
> > --- In fairchildclub@yahoogroups.com, "Mike Bourget"
> > wrote:
> > > Hi all,, anyone know the details of the magnesium alloy on the
> > valve
> > > cover?
> > > thanks,
> > > Mike
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

'

Posted: **Sat Sep 04, 2004 3:34 pm**

'Hi All,.,. I have a spare engine that needs a rebuild, and I can
use the cover off of that (buy another cover if I decide to rebuild
it). My problem is this, some have said that the cover and assembly
are matched and cannot be used separately, others have said the
opposite, not quite sure where to go. I would agree putting another
cover is probrably the cheapest solution, but I've also been told
that the cover and the assemlby are matched, and I should tear it
apart and switch all the parts and re-install the assembly with the
new (older) cover, I am not qualified to do this. sooooo.........I'm
a little confused.

Mike

--- In fairchildclub@yahoogroups.com, "John Berendt"
wrote:

> Mike,
> I have a spare cover I would sell it may save you allot of time

and money.

> if interested let me know.
>
> John Berendt
> Fairchild Club
> ----- Original Message -----
> From: "Mike Bourget"
> To:
> Sent: Friday, September 03, 2004 8:54 AM
> Subject: [fairchildclub] Re: Ranger magnesium alloy?
>
>
> >
> > HI Greg,, partially correct. The engine was completely restored

and

> > zero timed (for experimental) in 96 and pickeled. It fell and
> > cracked the valve cover case. I have a spare engine I can

replace

> > the cover with, but want to try and weld the valve (cam shaft)

cover

> > first, save alot of time. If its ruined, nothing ventured

nothing

> > gained. Then I'll take the old cover/and assembly, the broken

cover

> > and assembly to N.Y or P.A. and get her reassembled.
> >
> > The aviation welding co. would like to know what the alloy is to
> > determine the weld process.
> >
> > cheers
> >
> > Mike
> >
> > --- In fairchildclub@yahoogroups.com, "purplewhite1978"
> > wrote:
> > > Mike,
> > > I am assuming that you are asking about restoration?
> > > If so...
> > > I fully-restored my Father's Ranger engine.
> > > First, remove the pick-up tube and clamp. Next, we stripped

the old

> > > paint, washed the oil off with mineral spirits, and steam-

cleaned

> > > cover inside and out.
> > > Dupont makes an excellent Acid Etch solution, to be followed

with

> > > Alodine and fresh water rinse. (Inside and out)
> > > Follow the directions carefully, and keep your session shorter

than

> > > usual (as compared with aluminum parts) since the magnesium is
> > prone
> > > to damage if subjected to the acid for too long a period of

time.

> > > Once the part was totally clean, we sprayed a thin coat of

zinc-

> > > chromate primer onto the outer surface, then followed that

coating

> > > with Polyfiber's Epoxy Chromate. After that was cured, we

finish-

> > > painted with Imron. If that procedure sounds like over-kill,

you

> > are
> > > probably correct. Our motto: "Only the best for our flying
> > machines!"
> > > Greg
> > >
> > >
> > >
> > >
> > > --- In fairchildclub@yahoogroups.com, "Mike Bourget"
> > > wrote:
> > > > Hi all,, anyone know the details of the magnesium alloy on

the

> > > valve
> > > > cover?
> > > > thanks,
> > > > Mike
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >

'