i have it and would say yes do it but some people say it makes it rust more, but i have had it for ages and no problems touch wood, there are pros and cons of course

 

The retention of heat within the manifold can increase the exhaust scavenging by increasing the exhaust gas temperature which is good.

The increase in heat retention of the manifold means an increase in heat transference to the cylinder head which in turn can result in annealing (softening) of the hardening process that the head has been through and may result in premature HGF, which is bad!

There are a few other trains of thoughts as well but you pay your money and take your choice. Personally I would opt for plasma coating.

 

WHATS PLASMA COATING?

 

plasma couting is a proces of coating the manifold in plasma or cermaics to retain heat,

 

but doent this have the same affect as heat wrap the manifold? does heat wraping the mani produce more power? could i cable tie the heat wrap tyo the mani or would it just melt?

 

i think you can buy special heat proof ones mate, did you get hold of Dave???

 

same effect as heat wrap but a lot more expensive and id imagine its more efficient. it should give a slight gain in bhp but i wouldnt think its noticable. normal tie wraps would melt, use jubile clips or stainless tie wraps.

 

How is my mani and cat mate???

 

good tar just gets very hot think i am going to buy some heat wrap and ties off ptp this week manage to get hold of dave meeting him some time this week for bumper and i think he selling me mk2 tailgate when he done with it ride will lokk sweet then

 

Dont buy it from PTP you can get much cheaper else were, and in different colours too! I've got blue on mine!

 

Plasma coating dosent transfer the heat to the manifold (as much) it keeps in inside the pipe.

With heatwrap, the exhaust gas is still in direct contact with the metal of the manifold, the wrap is just a jacket on the outside.

With a plasma coating both the inside and the outside of the pipe is coated. This keeps the heat in the pipe and stops it getting to the manifold or the head.

The other thing is that you can get the plasma coating in all sorts of trick colours and effects

 

ahh didnt realise you could coat the inside, how much would it cost? got any pics of a manifold thats been done?

 

i got quoted for full race spec coating inside and out in black £180 for the manifold and that is if the item is brand new additional charges would occur if item has been used due to cleaning process.

 

WOW! Thats a really good price. Dont suppose you could give me details of the company? I have got a 4 branch manifold sitting my garage that is waiting to get plasma coated.

 

hmm think i'll just go for a stainless manifold insted

 

so where is the cheapest place i can get good heat wrap from?

 

The power increase after heat wrapping the exhaust manifold is approx 2%, this was tested on the Range Rover Sport HSE, and several other cars have been tried and tested all found gains of around 2%. Which isnt alot to be honest, on a 105, its just over 2 bhp, and a 160 its 3.2 bhp so nothing major but every little helps. Ive done it to my 105 and i would say i felt a difference driving it, but that could just be down to me wanting to feel a difference if you know what i mean. Ive also had the heat wrap on and off twice over the past few months and there doesnt appear to be any damage to the manifold.

 

cheers mate helped me out alot

 

i kno on some of the VAG forums you can get a thicker exhayst gasket that has more insulation in them and stops alot of the heat from the exhaust soaking back into the head, dont know if one is available for the mgzr but you never kno this may help as well,nathan