Lowering Engine Heat
Lowering Engine Heat
Alright, so i know everyone wants to know how to lower their engine heat, because heat=less power. i know that coating your headers can help, fully synthetic oil, and wrapping your exhaust can also help? from what ive read. so if anyone else knows any easy ways to lower heat you can post it here 
Joined: Oct 2008
Posts: 432
From: St. Paul, MN
if you wrap your crossover pipe i would recommend using some silicone sealer to protect the wrap from the elements. otherwise the wrap holds in the moisture and rusts your pipes/manifolds etc.
i wrapped my MAF with a 4" piece of hose to further combat heatsoak since the IAT is in the MAF.
i wrapped my MAF with a 4" piece of hose to further combat heatsoak since the IAT is in the MAF.
Joined: Jun 2009
Posts: 852
From: Dayton, ohio
The problem with wraps is three fold: moisture, air, uneven temperatures.
with wraps the moisture could lead to rust, which while certainly true is not the main reason I would be concerned with moisture. The wraps do not provide an uninterrupted covering of the header which can lead to air and water getting under the wraps particularly at the ends and joints of the wrap and air is trapped under the wrap when the wrap is put on. further because the wrap will either be overlapped or abutted to the previous pass you will get uneven temperatures which cause uneven expansion of the pipe leading to metal fatigue. this problem is only made worse by the presence of air and moisture, which will expand when exposed to heat.
Bottom line, when it comes to header wraps: don't.
Now on the other-hand for coatings, not all coatings are created equal. Some are only good to a hair over a thousand degrees, and some are not fully cured until the vehicle is run. and the coating is only as good as the prep. coating pipes that have not been properly degreased and profiled will result in a failure of the coating. Although some coatings are sold over the counter, If you are not experienced with thin film coatings, expect to do some experiments with the material to become familiar with it. On the other hand, a good coating's performance benefits can't be beat, but make sure that if you run a turbo, nitrous, or any other mods which increase your egt (Exhaust Gas Temperature). you make sure the coating chosen will handle the elevated egt.
i hope this helps!
with wraps the moisture could lead to rust, which while certainly true is not the main reason I would be concerned with moisture. The wraps do not provide an uninterrupted covering of the header which can lead to air and water getting under the wraps particularly at the ends and joints of the wrap and air is trapped under the wrap when the wrap is put on. further because the wrap will either be overlapped or abutted to the previous pass you will get uneven temperatures which cause uneven expansion of the pipe leading to metal fatigue. this problem is only made worse by the presence of air and moisture, which will expand when exposed to heat.
Bottom line, when it comes to header wraps: don't.
Now on the other-hand for coatings, not all coatings are created equal. Some are only good to a hair over a thousand degrees, and some are not fully cured until the vehicle is run. and the coating is only as good as the prep. coating pipes that have not been properly degreased and profiled will result in a failure of the coating. Although some coatings are sold over the counter, If you are not experienced with thin film coatings, expect to do some experiments with the material to become familiar with it. On the other hand, a good coating's performance benefits can't be beat, but make sure that if you run a turbo, nitrous, or any other mods which increase your egt (Exhaust Gas Temperature). you make sure the coating chosen will handle the elevated egt.
i hope this helps!
