All Things Mk5 > How to Guides / Troubleshooting

DIY Heat Wrap DownPipe

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gillm:
wrap can cost as little as £20 or up to about £80 , yes the outcome is proven . any heat removed from the engine bay is a good thing

Ottis:

--- Quote from: xxx_mojo_xxx on March 02, 2010, 10:01:54 pm ---Great write up Ottis.  Can you give indicative costs?

Are the performance gains "proven" and recognised - or is this up for debate?

--- End quote ---

Cooltek EX.Wrap 25m X 50mm cost £35.00 + cooltek stainless ties X 10 cost £10 + cool-it Heavy Duty Spray Adhesive £18 + DEI Hi-Temp silicone coating £14 this is about the costs to heat wrap downpipe,i bought to much heat wrap for the job,so can be bought for less,try ,e-bay or motorsportworld . :happy2: :wink:

Yes the performance gains are proven,Since more heat is staying inside the exhaust manifold gas it will have more heat energy and move out of the exhaust system much faster. Remember heat=energy, the hotter the exhaust gas the faster it will try to leave the system so it also can reduce some pumping losses and possible gain some power (though thats not its purpose). Turbocharged cars often pick up 500rpm of spool up with properly wrapped manifolds/turbine housings/downpipes since more heat stays in the exhaust it spools the turbo faster .

From what I understand, wrapping a cast iron manifold is not a good idea, but a manifold made from quality tube or stainless steel is fine.



Advantages. underhood temps will be reduced,
                     heat energy stays in the exhaust keeping it flowing instead of radiating away,
                     intake temps will be lower with lower engine bay temps,
                     more horsepower.
                       

xxx_mojo_xxx:
Thanks Ottis - that just about wraps up things (pun intended)  :driver:

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