Bonnet hinge repair.
Discussion
blaze_away said:
I have a broken fibre glass bonnett hinge mount on the bonnet.
See photo, are my hinges standard or something else ?
What is the best way to remove bonnet and repair it considering it has to be done outside with no garage ?
98 model.
Dunno but I'll come give you a hand as mines exactly the same. See photo, are my hinges standard or something else ?
What is the best way to remove bonnet and repair it considering it has to be done outside with no garage ?
98 model.
You look like you've got the quick release ones on there (rare)
I think phazed had them on his glorious 4.6 car.
I've removed and re fitted a bonnet Frank. Two of you it's not so hard.
My vision was to place the bonnet upside down on some stands with plenty of protection then cut a square hole out the section next to the hinge so you can fill it from inside. When all set then re fit square piece and dress up. Re paint etc.
Or you can cut off the complete section as you can get a replacement.
Any other ideas,,,,,
Outside might be a problem as you'll need some time to cure and paint, have you got a gazebo
Yes, they look like early Steve he's QD hinges.
I had one loose threaded bar on my bonnet which I fixed the day before it went in for a respray a few weeks ago.
Remove the bonnet and turn inverted on some protection. I used a couple of large cardboard boxes with a couple of old blankets on them.
There was a hole pre-cut in the underside of the bonnet for access to the inside of the threaded bar which was attached to a metal plate.
I cut some shaped sections of fibreglass matting ready to use.
I mixed up the resin, coated up the inside area and then built up with two or three layers of the fibreglass matting using plenty of resin.
After I left it to dry overnight then I fitted the bonnet.
All in all it was no more than an hours work.
I had one loose threaded bar on my bonnet which I fixed the day before it went in for a respray a few weeks ago.
Remove the bonnet and turn inverted on some protection. I used a couple of large cardboard boxes with a couple of old blankets on them.
There was a hole pre-cut in the underside of the bonnet for access to the inside of the threaded bar which was attached to a metal plate.
I cut some shaped sections of fibreglass matting ready to use.
I mixed up the resin, coated up the inside area and then built up with two or three layers of the fibreglass matting using plenty of resin.
After I left it to dry overnight then I fitted the bonnet.
All in all it was no more than an hours work.
OK fella's sounds like its doable.
I will take take you up on your kind offer Alun.
I can set up my caravan and awning and do the work in there under cover
and we can fix both yours Alun and mine at the same time.
I already have the fibre glass kit just need to get some threaded bar. Also have a small generator should we need power tools and caravan as tea room too might even shove some beers in the fridge.
I will take take you up on your kind offer Alun.
I can set up my caravan and awning and do the work in there under cover
and we can fix both yours Alun and mine at the same time.
I already have the fibre glass kit just need to get some threaded bar. Also have a small generator should we need power tools and caravan as tea room too might even shove some beers in the fridge.
,,,, and beer phazed 11.83 said:
Yes, they look like early Steve he's QD hinges.
I had one loose threaded bar on my bonnet which I fixed the day before it went in for a respray a few weeks ago.
Remove the bonnet and turn inverted on some protection. I used a couple of large cardboard boxes with a couple of old blankets on them.
There was a hole pre-cut in the underside of the bonnet for access to the inside of the threaded bar which was attached to a metal plate.
I cut some shaped sections of fibreglass matting ready to use.
I mixed up the resin, coated up the inside area and then built up with two or three layers of the fibreglass matting using plenty of resin.
After I left it to dry overnight then I fitted the bonnet.
All in all it was no more than an hours work.
Thanks for that Peter I thought they might be non standard. Very useful info.I had one loose threaded bar on my bonnet which I fixed the day before it went in for a respray a few weeks ago.
Remove the bonnet and turn inverted on some protection. I used a couple of large cardboard boxes with a couple of old blankets on them.
There was a hole pre-cut in the underside of the bonnet for access to the inside of the threaded bar which was attached to a metal plate.
I cut some shaped sections of fibreglass matting ready to use.
I mixed up the resin, coated up the inside area and then built up with two or three layers of the fibreglass matting using plenty of resin.
After I left it to dry overnight then I fitted the bonnet.
All in all it was no more than an hours work.
No photos my lad 
Anyway took my bonnet off today to do the same repair. Except my '94 model has a different arrangement.
It has a piece of channel with the threaded parts at each end. It is fitted to the bonnet with 7 pop rivets.
The nearside was wobbly so needed to repair it. Drilled out the pop rivets that had corroded/failed and replaced them with pan head screws and nuts for a stronger fitting. Its one fiddly curse
inducing job trying to get a washer and a nut on to the screw as the channel is very narrow. Once done though, everything is nice and tight again.
Rusty rivets drilled out
Bonnet refitted for now. Will rust treat and paint at a later date.
Anyway took my bonnet off today to do the same repair. Except my '94 model has a different arrangement.
It has a piece of channel with the threaded parts at each end. It is fitted to the bonnet with 7 pop rivets.
The nearside was wobbly so needed to repair it. Drilled out the pop rivets that had corroded/failed and replaced them with pan head screws and nuts for a stronger fitting. Its one fiddly curse
inducing job trying to get a washer and a nut on to the screw as the channel is very narrow. Once done though, everything is nice and tight again. Rusty rivets drilled out
Bonnet refitted for now. Will rust treat and paint at a later date.
Edited by N7GTX on Tuesday 29th August 18:47
Hi chaps, quick update on this one.
So remove bonnet, 2 persons, by undoing the Allen bolts that clamp brackets to vehicle body. And slowly lift bonnet up and away.
In my case the o/s bolt was completely detached from bonnet and came out with a lump of fibre glass still attached to the bolt.
This actually made it easier to repair.
All we did was clean up the area and then line the inside of bonnet opening with P40, let that go off then literally fill the hole with P40 and the back of the bolt then insert bolt back in place, I was lucky as it was easy to line up the bolt with the original hole from the crack lines.
You might just see the first layer that's been smeared to make good contact with the inner bonnet.
Good tip, use disposable gloves to apply fibreglass with hand and just scoop it up and fill hole, not great access so easier than trying to tool the stuff in. Use plenty of gloves
Then remove masking tape before fibreglass has gone off.
As you can see my bonnet needs re painting on the underside so I've not really done much to make it look nice so another time I'll remove it and make good.
Removing and replacing bonnet is the hardest bit.
Frank with his good humour was the muscle by standing in front of the car and just holding bonnet steady as I slowly undid all the bolts.
We used some carpet and sheets to protect the body edges where the bonnet might rub or hit and all went well.
Replacing is just a reversal of that operation.
So onto Franks car which has the same o/s loose bolt but his is actually the bolt breaking free of the bonding fibreglass used by Tvr so we removed the bonnet and after some thought decided his needs a Bremmel to cut a hole out of the adjacent area and then re full with fibreglass from there. His bolt hasn't broken the surrounding fibreglass so no point in making a problem.
A grinder with a slitting disc would do but for a better finish and accurate cut so the section removed can still be put back nicely we decided against doing his today,,, much to my personal frustration but once Frank gets the Bremmel off his lad we'll have it done in no time.
Mine
Very pleased.
Franks quite the Chemist so hardener to filler ratio was perfect
The heat produced around the outside of the bonnet suggests we hit the spot. ( that's a good way to tell if you got enough filler around the bolt and importantly the inner bonnet as I could tell by that it had taken.
Bonnet don't rattle anymore,,, get in there.
Thanks Frank, really enjoyed the day. Let's do it again sometime, if you want to service it or any of that, just shout will ya.
By the way people we did this in a field next to a Caravan under the awning,,,, as it hammered down for 20 minutes half way through.
One other thing, provide some soft blankets or similar and get them in place near the car so you can turn bonnet upside down and place on the floor or stands ( if you'd prefer ) in one go.
Half my cars been fixed by you guys on here,,, I really like that,, thanks blokes
Jacko, I have a bonnet that stays put, less lift,,,,less drag, 12.4 coming, you best fix yours asap.
So remove bonnet, 2 persons, by undoing the Allen bolts that clamp brackets to vehicle body. And slowly lift bonnet up and away.
In my case the o/s bolt was completely detached from bonnet and came out with a lump of fibre glass still attached to the bolt.
This actually made it easier to repair.
All we did was clean up the area and then line the inside of bonnet opening with P40, let that go off then literally fill the hole with P40 and the back of the bolt then insert bolt back in place, I was lucky as it was easy to line up the bolt with the original hole from the crack lines.
You might just see the first layer that's been smeared to make good contact with the inner bonnet.
Good tip, use disposable gloves to apply fibreglass with hand and just scoop it up and fill hole, not great access so easier than trying to tool the stuff in. Use plenty of gloves
Then remove masking tape before fibreglass has gone off.
As you can see my bonnet needs re painting on the underside so I've not really done much to make it look nice so another time I'll remove it and make good.
Removing and replacing bonnet is the hardest bit.
Frank with his good humour was the muscle by standing in front of the car and just holding bonnet steady as I slowly undid all the bolts.
We used some carpet and sheets to protect the body edges where the bonnet might rub or hit and all went well.
Replacing is just a reversal of that operation.
So onto Franks car which has the same o/s loose bolt but his is actually the bolt breaking free of the bonding fibreglass used by Tvr so we removed the bonnet and after some thought decided his needs a Bremmel to cut a hole out of the adjacent area and then re full with fibreglass from there. His bolt hasn't broken the surrounding fibreglass so no point in making a problem.
A grinder with a slitting disc would do but for a better finish and accurate cut so the section removed can still be put back nicely we decided against doing his today,,, much to my personal frustration but once Frank gets the Bremmel off his lad we'll have it done in no time.
Mine
Very pleased.
Franks quite the Chemist so hardener to filler ratio was perfect
The heat produced around the outside of the bonnet suggests we hit the spot. ( that's a good way to tell if you got enough filler around the bolt and importantly the inner bonnet as I could tell by that it had taken.
Bonnet don't rattle anymore,,, get in there.
Thanks Frank, really enjoyed the day. Let's do it again sometime, if you want to service it or any of that, just shout will ya.
By the way people we did this in a field next to a Caravan under the awning,,,, as it hammered down for 20 minutes half way through.
One other thing, provide some soft blankets or similar and get them in place near the car so you can turn bonnet upside down and place on the floor or stands ( if you'd prefer ) in one go.
Half my cars been fixed by you guys on here,,, I really like that,, thanks blokes
Jacko, I have a bonnet that stays put, less lift,,,,less drag, 12.4 coming, you best fix yours asap.
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