Hi, Having had a lot of grief with heat shields over the 14 years my H4 has been in the road, I finally got a solution that seems to work.
The main problem is that if you use the Ford pressed aluminium heat shields, despite the fact that the eyelet holes are reinforced, they are designed to be held in place using some form of compliant non-conducting media which I did not get with my Kit-in-a-box. At first I simply put coach bolts through the floor and used the retaining nuts to space the heat shield off the floor to provide an air gap and thus an insulation layer which gave no problem of heat getting to the floor. I fixed the shields in place using large "penny" washers either side. This worked fine but the shield material is so thin that it soon fatigued away around the retaining washers. The replacement washers got larger and larger and the evidence of electrolytic corrosion became more apparent each time that I finally made "penny" washers in 2 mm thick aluminium large enough to cover all the holes, which were then pop riveted together with the shield. This has now been in position for about 5 years with no apparent electrolytic deterioration so it is now a case of "if it ain't broke, don't fix it!" Hamish -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jim Hearne Sent: 11 August 2013 09:10 To: [email protected] Subject: Re: [Quantum Owners] H4 Under-body Heat Shielding. I think the floor on the H4 is only single skin. The original Ford fittings were studs welded to the floor with big pressed steel nuts screwed to them. The Ford studs had a self tapping thread profile on, not a parallel metric thread. The nearest equivalent would be to put self tapping screws through from inside the car so the thread stick out under the car for fixing the Ford nuts onto. Jim On 10/08/2013 15:12, The Blue Pig wrote: > My H4 is a little light in the area of heat shielding for the exhaust > and cat (retro-fitted by the previous owner when the 1.6 Zetec engine > was causally nailed in). > > I have plenty of material to do the job - my local garage was more > than happy for me to scavenge discarded sections from their junk pile > for nothing. I am wondering what is the best way to attach it to the > underside of the body. My knowledge of the anatomy of the body tub is > a little hazy but I'm guessing there's a void between the upper and > lower body mouldings, so is it feasible to drill a hole from below and > use the kind of plastic cavity anchor fixing one would use on a > studded wall to hold a screw - the kind of fixing that splays out as > the screw is tightened and locks against the inside of the cavity? Or > is it better simply to stick the shielding in place with epoxy resin? > > Thanks for any advice. > > Steve / The Blue Pig. > -- > -- > You received this message because you are subscribed to the Google > Groups "Quantum Owners Group" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/quantumowners?hl=en > > IMPORTANT NOTE: All information presented herewith is provided on an > "As Is" basis, without warranty or the implication thereof. Neither > the Quantum Owners Club nor the individuals associated with the > Quantum Owners Club or in the preparation of the above information > shall have any liability to any person or entity with respect to > liability, loss, or damage caused or alleged to be caused directly or > indirectly by the instructions contained within this or related > message(s). > --- > You received this message because you are subscribed to the Google > Groups "Quantum Owners Group" group. > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). --- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. 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