Exhaust Floor Heat Shield

[Rally Pack 2000]

I seem to be getting excessive heat coming through to my feet from the new exhaust. Anyone use some kind of stick on heat shield in that area? I would rather something that sticks on rather than bolts on. It would have to be more robust than the usual  under bonnett stuff as it has to survive stones / water etc on the undertray.

[Rally Pack 2000]

This stuff looks a bit better than the aluminium foil type that I think would chip and tear off in no time but Im always sceptical of quality and claims from Chinese sellers.

https://www.ebay.com.au/itm/Exhaust-Turbo-Heat-Shield-Matrix-Adhesive-Backed-Lava-Mat-2000F-Various-Sizes/153300026349?hash=item23b164c3ed:m:mb6JkjvjPsN5BgHGPR2ndqw:rk:10:pf:0

[Snapper]

On my Lotus 7 replica the 4 Branch manifokd wraps round the drivers footwell. 

I glued glass heatmat to the outside of the engine bay bulkhead and inside the footwell .

for your application andbif you have space a simple ally sheet heat shield with an air gap between the exhaust pipe and pipe tunnel will help reflect heat, glueing silvered heat mat to the tunnel helps with transmitted heat and another layer of heat mat under the carpet should reduce conducted heat.

its never one solution 

[Rally Pack 2000]

20 minutes ago, Snapper said:

On my Lotus 7 replica the 4 Branch manifokd wraps round the drivers footwell. 

I glued glass heatmat to the outside of the engine bay bulkhead and inside the footwell .

for your application andbif you have space a simple ally sheet heat shield with an air gap between the exhaust pipe and pipe tunnel will help reflect heat, glueing silvered heat mat to the tunnel helps with transmitted heat and another layer of heat mat under the carpet should reduce conducted heat.

its never one solution 

Thanks for your reply. I wasnt getting much response to this thread and it hit me that at the moment its probably a welcome foot warmer for most of you guys there rather than being a problem!

[Vista]

Wrap the exhaust? Or get it ceramic coated. 

[Rally Pack 2000]

4 minutes ago, Vista said:

Wrap the exhaust? Or get it ceramic coated. 

The RS manifold and the secondary pipes were ceramic coated. That seems to be preventing the heat from dissipating if anything. Just there seems excessive heat coming through the drivers foot well.

[katana]

If you are getting excessive heat with all that done sounds like its way too close to the body - there should be a good air gap to sheet metal. Or maybe you are getting more sensitive ? Seems a bit ironic that the features you've applied to reduce under bonnet heat has just transferred it under your feet LOL! 

[Rally Pack 2000]

3 minutes ago, katana said:

If you are getting excessive heat with all that done sounds like its way too close to the body - there should be a good air gap to sheet metal. Or maybe you are getting more sensitive ? Seems a bit ironic that the features you've applied to reduce under bonnet heat has just transferred it under your feet LOL! 

It is a bit ironic yes. I think there is some misconceptions about the effects of ceramic coating as certainly my results are showing. This notion that it reduces heat has proven to be false. It instead has trapped the heat for longer without dissipating as the burn on my arm this week will attest. The manifold can stay untouchably hot for hours. The distance the new exhaust is from the body was pretty much determined by the secondary manifold pipes and its flange end point. They are no closer to the body than before. The ceramic coated pipe is holding the heat within itself acting like a heating element beneath the floor rather than allowing the pipe to cool. It has been exaggerated admittedly that the original thick floor tar has been removed and replaced with a thinner Dynamat sound proofing. I am probably more sensitive in the fact after a solid week of 45 degree Celsius + days (Today was 48, 119 Fahrenheit) having a heated floor pan doesn't really make for a comfortable experience. It may prove nicer in the winter but I really didnt plan on a Roman hypocaust for my car.

[colr6]

Maybe a bit off here but you haven’t done anything with the ign system at the same time have you? The lines I’m thinking on is if the ign is to far retarded the the exhaust manifold temp will increase. A long shot but easy checkable.

[Rally Pack 2000]

Just now, colr6 said:

Maybe a bit off here but you haven’t done anything with the ign system at the same time have you? The lines I’m thinking on is if the ign is to far retarded the the exhaust manifold temp will increase. A long shot but easy checkable.

No I haven't sorry Col, I haven't touched the ignition in years

[colr6]

30 minutes ago, Rally Pack 2000 said:

No I haven't sorry Col, I haven't touched the ignition in years

Worth checking to see it’s still correct.

[Rally Pack 2000]

46 minutes ago, colr6 said:

Worth checking to see it’s still correct.

I will thanks just to be sure. Things in that area are pretty stable as the car has had electronic ignition on it for near on 30 years.

The noticeable floor heating problem as well as the overheating of the car in general started the day I replaced the manifold and exhaust.

[Monza]

Bring her over to the UK.....won't notice the heat problem here!!! Well maybe during our summer which lasts about 10 days...... july time!!

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[Rally Pack 2000]

42 minutes ago, Monza said:

Bring her over to the UK.....won't notice the heat problem here!!! Well maybe during our summer which lasts about 10 days...... july time!!

Sent from my SM-G900F using Tapatalk
 

Post some snow over, it would be heaven.

Even my Twincam wont drive over 35 degrees as the fuel pre-atomises. It seems to get homesick for more gentler climes.

[Monza]

Post some snow over, it would be heaven.
Even my Twincam wont drive over 35 degrees as the fuel pre-atomises. It seems to get homesick for more gentler climes.

Definately "gentler climes" heat wise over here....but in North Wales we certainly get a winter!!

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[Rally Pack 2000]

1 minute ago, Monza said:

Definately "gentler climes" heat wise over here....but in North Wales we certainly get a winter!!

Sent from my SM-G900F using Tapatalk
 

You would probably laugh at our winters. A brisk breeze occasionally and people still go to the beach.

[Monza]

You would probably laugh at our winters. A brisk breeze occasionally and people still go to the beach.

Love it

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[Robbymag]

I have been doing the inside of mine carpet seats and stuff but I noticed the passenger side footwell is suffering from heat from the exhaust which is a bit close but just put it down to th e exhaust being a crap fit 

[Rally Pack 2000]

Ok I found a reasonable quality one that will stick to the underside. Will one foot square be enough to order do you think? There is a more than reasonable air gap between the floor and the new exhaust. It silts a bit closer to the chassis rail than I would like as the brake lines are right there also. The main difference to the old one is that its now flanged whereas the old extractors were welded to the exhaust and the flange is alot closer to the floorpan than the previous join as you would expect as its alot thicker at that point. So will put a bit of shielding centred on the flange and fold it against the chassis rail covering the brake lines and also where the speedo cable comes at its closest point to the manifold. 40cm length would be ideal but it only comes in 30 and 60cm lengths so was hoping 30 would be enough?

[katana]

Always better to have 'too much' than wish you'd bought the longer bit!

[Rally Pack 2000]

I ended up getting a 12x24in sheet of this stuff, supposed to withstand over 1000 degrees. It seems to be a thick silvery cloth based sheet material with an adhesive back.

Will have to clear off 30 years of road grime and a bit of Por15 before I stick it on.

[KiwiCortina]

Did the Aeroflow sheeting stop your jandals from melting?

p.s I was going to use 'thong' instead of 'jandal', but that might confuse our northern hemisphere friends.

[Rally Pack 2000]

6 hours ago, KiwiCortina said:

Did the Aeroflow sheeting stop your jandals from melting?

p.s I was going to use 'thong' instead of 'jandal', but that might confuse our northern hemisphere friends.

I haven't gotten to this job yet. Cleaning off decades of road crime with thinners, strippers and degreasers with steel wool is a crappy messy job. It all goes in your eyes and the constant scrubbing with steel takes off your finger prints and makes the tips of your fingers go numb. Having done this previously on the outside of the chassis rails I have been kind of finding excuses not to do it prioritizing other jobs ahead of it. A hoist would really be helpful.

Your wise to have to change your terms here sometimes, some may be horrified with mental images of me wearing thongs when I drive the Escort!

[katana]

I don't know - you could always take a friend!