Bonnet catches

[calum mcpherson]

Want to fit a set of bonnet catches to secure bonnet a bit firmer, requires 2 holes to be drilled , bonnet one is fine as have rear access , however on section between bonnet and door I am drilling blind and was wondering if anything is in behind panel. I recently removed side indicators & fibreglass appears to be between 8 & 10mm thick at that section, but lower lipped section at wheel arch seems not to sound as hollow , which is where ideally I would like to drill , anyone got any knowledge on this ?

Thanks

Calum.

[Jim Hearne]

Has your bonnet already got locating pins in each corner ?

Those properly done should hold the corners of the bonnet quite securely.

The default Quantum ones are rectangler furniture block on the body and matching holes in the flange of the bonnet.

Unfortunately it’s quite hard to work out exactly where the hole should be so they are quite often oversize.

 

I didn’t use the plastic blocks, i fitted stainless pins into the body (about 1/2” dia”") with a taper on the end, and a large grommet into a hole in the bonnet.

A self adhesive rubber seal around the rear of the bonnet will also help reduce the movement of the rear of the bonnet but if you’ve not got vents in the bonnet it might increase the temperature under the bonnet.

 

Anyway, back to your original question, there is nothing inside that area except a void and the big steel box section where it kicks up from the sill.

If you drill too close to the edge you may come through under the wheel arch.

 

If you have the tools drill and tap the fibreglass rather than using self tapping screws.

If you have to use self tappers then countersink the hole so that the gel coat is clear from around the edge, without that the screw will almost certainly crack away part of the gelcoat around the hole.

 

Jim

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[calum mcpherson]

Thanks Jim, have rubber seal round edge which I just renewed, & blocks also fitted, just feel bonnet catch isn't as secure as it could be due to design, as long hoop on bonnet can still move a bit when locked (back & forward not up),noticed this when stopping very abruptly the other week to avoid a silly woman 😡. Thanks again for your help, I'm fitting a rivnut in wing and will seal fibreglass where drilled 👍. Calum. 

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[Jim Hearne]

Check for wear on the pivots where the bonnet hinges, if they have used bolts and they have gone rusty, or worse still the bonnet is pivoting on the thread then the holes in the bonnet can wear quickly.

You don’t tend to notice when you open the bonnet as all the weight is pushing it down.

 

Ideally have lock nuts each side of the fibreglass (you might need to level it off first) so the bolt has to pivot in the subframe not in the fibreglass.

[calum mcpherson]

I'll check that too Jim, bit belt & braces the clamps , but that's me 

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