The yellowing is an irreversible UV degradation of the vinyl. When you
can't see through them anymore it is a safety issue, so bite the bullet
and buy a new top. They are not difficult to install, and I've gotten
good service out of the Robbins brand for around $200.
Eight years is a decent lifetime for these tops, especially if you live
in the sun belt.
I don't know about your frame question, but I installed the later type
frame that folds down with no bows bending in towards the middle.
Easiest to use IMHO.
Chris Chandler wrote:
> I have an older (was new 8 years ago) top with extremely badly yellowed
> windows. Is it possible to clean them up (noting that windwx didn't do a
> bit of good last night) or have the window portion replaced? I can't see
> junking it considering what these things cost...
> Any ideas appreciated!
> While on the subject, which type of top frame should a '70 have? Scissor?
> Or one of the other ones? I have one of each as spares (somehow???) plus a
> scissor type that was on the car when I bought it.
> Chris Chandler
> '70 MGB Roadster
'84 Vanagon Westfalia w/2.1
'65 MGB (Daily driver since 1969)
'74 MGB GT (Restoring sloooowly)
Personal mechanic for:
'70 MGB GT (Daughter's)
Assisting on Restoration (and spending OPM):
'72 MGB GT (Was daughter's, now son's)
'64 MGB (Son's)
Stripped and gone but their parts live on:
'68 MGB, '73 MGB, '67 MGB GT
/// email@example.com mailing list
/// (If they are dupes, this trailer may also catch them.)