GTC Hood cover panel

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guybetts
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GTC Hood cover panel

Post by guybetts » Sun Jan 21, 2018 10:41 am

The interior trim panels appear to be a vacuum formed plastic with vinyl covering. Obviously, the older these are getting the more fragile they become.

The mounting holes on the hood cover panels have crumbled over time, and now there is nothing but a bigger hole, which is no use as a secure fixing using the original self tapping screw and cup washer (parts 40 & 41 on the parts diagram) (I'd add the diagram if I could figure out how too :oops: )

I thought of fibre-glassing over the hole and then redrilling the mounting hole, but 1) I don't want to build up to much thickness, that the panel then does not fit properly, and 2) I'm unsure if fibreglass will bond to this plastic, which is quite smooth when cleaned.

Has any one any suggestions or got a solution, to repair the panels which is essentially invisible from the outside?

Guy


1966 Straight Six Coupe, 1981 GTC
Previous: SS1 1300 (C230 EPP) & 18ti (D993 WRX)

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GTC Hood cover panel

Post by scimjim » Sun Jan 21, 2018 11:40 am

There is a sticky here explaining how to add a picture but basically, click “add files” (below the post/reply box) and select the relevant picture from your device. Either submit the post/reply (in which case the picture(s) will appear at the end of your post), or press the “place inline” button that appears once it’s uploaded to the site (then you can add text below the picture(s)).

I presume you mean this picture?
33A1D67A-8243-4A49-90E1-3D63CBD741FE.png
33A1D67A-8243-4A49-90E1-3D63CBD741FE.png (305.29 KiB) Viewed 455 times
I would probably GRP to the rear of the panel after abrading it - possibly reinforce the hole with a penny washer too?


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Post by guybetts » Sun Jan 21, 2018 12:00 pm

Thanks Jim. That's the pic. Part number 39.

Adding a penny washer to reinforce the hole is a good idea.
Guy


1966 Straight Six Coupe, 1981 GTC
Previous: SS1 1300 (C230 EPP) & 18ti (D993 WRX)

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Post by gtcse8 » Sun Jan 21, 2018 12:24 pm

Guy
Exactly same thing happened on my GTC.

I bought some "Plastiguage" from a model shop years ago to fix motorbike fairings which are usually ABS.

It comes in different colours and thicknesses, and can be moulded and formed by warming it up to get the contour or shape you need, so I made some cups that fitted inside the recess for the screws and bonded it into place with Plumbing pipe glue/sealant.
Screwfix seems to be the cheapest supplier.
Weld on 661 gets good reviews, but I used the expensive polypipe stuff cos that's what I had left over.
Then I used the biggest washer I could get in the recess and its still fixed now.

This method can also be used on the dashboard and centre consoles etc.

Cheap and it works if you clean the area properly before trying to bond it.

Mark


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Post by Corky » Sun Jan 21, 2018 12:37 pm

GW, did have some new old stock hood frame covers when I was last in his stores buying a full set of interior panels for GTC.404. That was about 7 years ago though, so he may not have them now. Surprisingly cheap though.


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Post by Roger Pennington » Sun Jan 21, 2018 4:04 pm

Mark, excuse me asking, but are you sure it was "Plastiguage"? I've used that myself, and it's fairly fragile and used for precise measuring of the assembled clearance of things like big ends and main bearings. I can't imagine it being strong enough for that kind of use? Here's a link to Plastiguage (I searched for that on screwfix, and nothing came up?????)


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Post by gtcse8 » Sun Jan 21, 2018 6:52 pm

Roger I was in a rush to get to the hospital and got my Measuring Chord ( plastiguage ) mixed up with my Model making card ( plasticard ).

Plasticard is a very versatile type of sheet and comes in different types from Styrene to ABS, just google the type of sheet required.
It`s also cheap compared to other composite repair materials.

Screwfix don`t stock it, only the solvent/glue to attach it.


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Post by guybetts » Sun Jan 21, 2018 7:24 pm

Mark, thanks for the info. I've got some plasticard in various thicknesses. Ill see what I can do with it. I got it from Hobbycraft a few years ago now, but they don't stock it anymore (they have very little for modeller's nowadays) so it would be from online sources or dedicated model shops, which are quite rare these days.


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Post by Geraint SabreGTCse5 » Sun Jan 21, 2018 8:13 pm

I need to strengthen exactly the same area on my GTC so what thickness would be best to uses to achieve the desired shape?

thanks


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Post by gtcse8 » Mon Jan 22, 2018 10:34 am

Hi Geraint and Guy

I used 1/2mm/20" and warmed it up with a hot air gun till I could fold and mould it over a piece of wooden dowel that I sanded to fit very loosely into the Concave moulding, as it folded I snipped the pleats away till it was a tight fit in the recess then I thoroughly cleaned both parts with 3M surface cleaner before gluing them in place.

You could of course just bond a piece to the back of the cover and drill through


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