Coating The Dump, Exhaust Manifold And Turbo Rear Housing?

[sprouly07]

Hey guys just after seeing if anyone has any information on the different type of coating for exhaust manifold and dump pipe. Originally I was just going to heat wrap the new dump pipe when I eventually got it but after thinking about it a bit just doing the dump seems a bit like a half a job considering your exhaust maniflod and rear housing will still be giving off a fair bit of heat.

I know you can get them ceramic coated but just wondering if anyone knew of any other types of coating that could work aswell. I'll never really looked into something like this so don't really have much information about it all.

Also any thoughts you have on it would be great, like if you think there is no real advantage to or something like that or just doing the dump would be enough.

Cheers guys

[FiftyOne]

http://www.jet-hot.com.auis in Castlemane vic. I had some exhaust bits done. Got to say, price was reasonable & the service was great

You're right in what you say re the heat wrap. It's also known to crack the metal due to the different rates of cooling etc. The better solution is the thermal ceramic coat.

There are the basic coatings, show coats, marrine coats and then the high performance coats. As you can expect the higher the coat performance the higher the cost, but as I said, the costs aren't that high. If you were building a race car and it was full tit at all times, you'd obviously use the 2,000c super coat straight up. Thing I came to realize is that most if not all A/M headers are coated from factory with a ceramic coat of some sort, and after time it oxidizes. A higher performance coat will probably last a little longer for 25%-50% the cost, but its really the heat cycles that do the damage. eg, cold starts etc. I've just stuck with the base ones for now, I'll see how the rest go as time goes on.

Re the turbine housing, I would have liked to have had that done, but not to be this time just yet. For the housing you'd probably put the best coating you've got on straight away. If you're worried about heat, a blanket under the shield might be the better way to go for now

[sprouly07]

I'm not overly concerned with heat but I just thought it would be a good idea to try and reduce it and if I'm going to do the dump I might aswell do everything. Considering I'm in far North Queensland it's probably a good idea I reduce the heat as much as possible, we have enough up here as it is.

Will start calling around after new year when places start opening back to see what they can offer.

If I do end up getting everything done I might make it into a like experiment type thing. Get the engine bay temp, intake temp and those sort of thing before and after see what difference it makes. Will even talk to the tuner and run it up on the dyno before and after its done. Would be interesting to see what difference it makes, if any at all.

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Edited 26/12/15 09:46 AM by sprouly07

[PTR_NITRO_FG]

I like the last part of your post OP

Good luck and hopefully it goes to plan with good results!

[FiftyOne]

I'd be supportive of seeing some data out of this #thumbsup

[Boganspeed]

I would think exhaust gas temps at tailpipe are more important.

As I understand it, moving the heat from the headers to the exhaust pipe will make the pipe hotter and keep gas temps up and therefore pressure in the exhaust, keeping gas velocity up.

At least that's how my tiny brain sees it.

Lower engine bay temps are nice too.