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Cabriolet Hood Mechanism

alz964

New member
Joined
13 Sep 2009
Messages
7
I've had my 1990 964 C2 cabriolet since June 2008, and I joined 911UK before that, but I'm sorry to say I've been a very infrequent visitor to the site. Now I'm back – begging for some advice please.

The electric hood has worked perfectly every time until this weekend, when it jammed part way up and would not move up or down. I found that the vertical casting at the rear of the offside window had broken, and that one part of the casting was overlapping the other, and the steel (?) window guide was severely distorted. A friend helped me to manually put up the hood to make the car watertight, by removing the steel window guide and the operating levers at the rear sides, realigning the cast pieces and by manually operating the locking mechanism at the front.

I have no idea if this breakage is the cause of the failure, or the effect of a failure elsewhere in the mechanism. I guess this must have happened to other vehicles, though I can't find anything on the internet.

Any ideas? Do you know if anybody had this failure before? Who might be able to repair it? I'm resigned to travel far if necessary.

Any advice will be gratefully received.
 

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Not quite the same but...

I had a bolt come loose on my old cabrio and disappear into the depths of the car - took it to Northway (near Reading) - they had a diagram of all the different part and ordered me just the piece that I needed and it was there in about 4 or 5 days - I'd take it to a Porsche specialist and see what they can do
 
Has the support bow separated into two parts as well as breaking in half?
You say offside so the right hand side (driver's side on a rhd car)?
 
Broken casting

Thanks for the tips. Sorry - it it nearside (left), not offside. The 2 parts separated, then overlapped. I have been given a couple of leads for companies that can fix it, so I'll be following them up. Alan
 
I have never seen the two parts separating. The cracking unfortunately is quite common but can be welded quite easily.
I suspect your left side cable has become shorter hence the non movement and subsequent cracking in half of the bow.

If your bow cannot be repaired properly I have a brand new left side bow for sale. I managed to get a rare Porsche hard top so no longer need to keep the spare bow.

Quite an easy repair/replacement to the hood structure if you have a dremel and some basic tools.
If you wish to go the diy route let me know and I shall give you some more information and copies of the Porsche repair and adjustment tsb.
 

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