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I’ve been clearing the shed of stuff that my son left behind after leaving home. Amongst it are some exhaust wrap and stainless steel ties that never made it on to his cars.

My V8 tubular manifolds are early 90’s vintage mild steel from S & S that came with their kit and are still going strong. I have read several articles that state you shouldn’t fit exhaust wrap at all, especially on mild steel exhaust manifolds as it’s the quickest way to ruin them with cracks and corrosion.

Has anyone amongst us or known to us experienced such a problem?

I ran my 2 litre for circa 5 years with exhaust wrap on a mild steel triumphtune tubular manifold without any apparent issues.

What about ceramic coating (done on exterior and/or interior? Here's a link to pros and cons of each. Does mention possible cracking of mild steel.

https://www.autoworks.com.au/blog/38-ce ... why-use-it

FI Spyder wrote:What about ceramic coating (done on exterior and/or interior?

If they were off the car I might have thought about ceramic. However they’ve been in place for over 30 years so I’m happy for them to stay there. There’s not much room between the manifolds, chassis legs and steering column. The exhaust wrap came to mind since it could be fitted in situ.

Adam

The last lot of Exhaust Wrap I used was over 20years ago and you had to soak it in water then wrap and tie it in place before it dried a really messy operation, not something to do in situ it was done with the exhausts on the bench (Maybe the stuff you have is different) but it did work well but can't remember weather the manifolds were mild steel or stainless.

The stainless extractor exhausts on the 4.6L Rover in the 8 was wrapped when we bought the car. It appeared to work OK, but the heat emanating from the engine bay was very high.

After about 8 years the wrap was getting a bit tatty, so we had the exhausts ceramic coated. I was not expecting any change to anything, so was amazed at the reduction in heat coming from the engine bay.

The difference was so great I would not ever consider wrapping an exhaust.

Hasbeen

In the bad old days asbestos lagging was used to wrap exhausts, it worked better than the fiberglass stuff used now.
On the other hand it did a better job of giving you cancer too!
I'd not bother with wrap and go straight for the ceramic coating, or do what I did for the exhaust extractors on my ute, witch was make a heat shield outta proper heat shield material, the reason for this was as it's my work vehicle I couldn't afford to have it off the road whist waiting to get the extractors coated.

BTW, the red thing bolted to the fire wall is a cattle call, It makes a MOO! sound to call the cattle up for feeding, it is operated by a cable and lever, which can be used to vary the pitch in order to make realistic cattle vocalisations.
I use it as a horn......city people don't pay much attention to the usual beep beep but the noise of an angry bull gets their attention, works well on cyclists and inattentive pedestrians with their heads buried in their damned phone!

Cattle caller