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Discussion Starter · #1 ·
Lucky me came across a set of Hella H4 euro lights for a pre face lift 900. 24 bucks for the pair with bulbs from pull-a-part.
The lenses are in great shape. However, the reflective stuff that I assume was on the inside of the bucket has gone away... I thought bumper chrome spray paint but I dont think it can handle the heat. What about just polishing the metal? Anyone got any other tips? thanks!
 

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the back it is not metal??(plastic) and the "chrome" will come straight off if you attemt to polish/improve it, as it is done by specialists. they can be done, but it costs a lot.
I put chrome tape(plumbers/builders use it on lagging etc) 3" wide etc and you will have to put it on with a soft cloth and not use your fingers as it takes the shine off a bit, but will give you a decent headlight. will take a bit of time to get it round all the bends and curvature of the unit, so just lay it as it goes
there has been othere threads on this,and i'm sure someone will put you in the right direction re these, but will be similar.
 

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Discussion Starter · #3 ·
16saabs said:
the back it is not metal??(plastic) and the "chrome" will come straight off if you attemt to polish/improve it
The swivel/tilt bucked the bulb is housed in is metal, the outer casing that the glass clips to is plastic.(these are the old illegal/non DOT lights) There is not any chrome left, just some flakey green looking stuff, Which I assume was chrome at one point. So I got nothing shiny right now.... However if you take a lite grit paper to the flakey stuf, under is bare metal. If you work it enough with polishing compound enough you can shine the metal...

Hrm... I think Ill try the metal tape in one, and polish the other. See what works out... thanks!
 

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The only real solution to this is to re-chrome (on metal reflectors) or re-sputter (on plastic).

At a classic car show last year I talked to a metal finishing specialist and IIRC he quoted £25 per reflector.

With as-new reflectors and all the oxidation on the wiring sorted out, you'll be amazed at how good the 900's headlamps are. Every moans that they're crap but actually it's old wiring and knackered reflectors.

The headlamps on my 900 are almost new and they're great.

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I used chrome/silver colored mylar tape which is sold at hobby shops for use in model airplanes. It's sold as a sheet and you have to cut off strips and carefully apply to the curved reflector surface. It holds up to the heat and has worked well for years on my 85. They sell chrome colored paints in a lot of stores now, but I don't know if they would work well for this application.
 

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Discussion Starter · #6 ·
brownie said:
I used chrome/silver colored mylar tape which is sold at hobby shops for use in model airplanes
Coolness, Ill check that out. Ive got the industrial metal tape someone else mentioned, but I believe the mylar stuff you are talking about is definatley a bit more reflective.

Otherwise Ill get on the phone about getting the buckets dipped and chromed... BUT the thing with that would be having to disassemble the plastic adjusters to remove the bucket from the housing. Im scared that they are pretty brittle. ahwell.

Thanks again for the info... I love you guys!

... in a brotherly way.:cheesy:
 

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Discussion Starter · #7 ·
Also, is there suposed to be a projector lense in the tower that the bulb sticks into? Sorry... Im not really sure how to better describe what im thinking... Thanks
 

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Discussion Starter · #9 ·
Matthew said:
Are you talking about the small metal frame which surrounds the lamp? If so, then nope it's supposed to be exposed; nothing fits onto it.
Yeap exactly. Thanks! I had seen other lights with a lense in the opening, I guess to focus the light.
 

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Matthew said:
The only real solution to this is to re-chrome (on metal reflectors) or re-sputter (on plastic).
The metal reflectors are not chromed. Instead they are sputtered on the underlying green paint. I once had a set chromed but I didn't put enough prep into them so they ended up frosted instead of shiny...

At a classic car show last year I talked to a metal finishing specialist and IIRC he quoted £25 per reflector.
That's not a bad price. Is that for the metal or the plastic ones? I got a quote of around GBP75/unit for chroming and about GBP50/unit for the plastic but dropping to GBP25/unit for a bulk order.
 

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As Matthew pointed out, the H4 lamps are are so darn good and bright that it is worth the money to restore them. H4 lamps are worth lots to American Saab nuts because you guys got either the crappy and hiddeous sealed beam units on flat nose 900s, or the really dim crappy american spec units on the facelift 900s.


I can't believe the difference between the two.
 
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