i have theory..... whynot get the hot side of the turbo, DP, and exh. mani. ceramic coated and then put on the heat/exht. wrap on the DP (LOOSELY) and get a turbo blanket.... that would seriously keep underhood temps in check. am i right?

 

Correct...

 

Yes, because we all know that all of mazda's designs were flawless, and that all manufacturers assemble cars the only way possible. People who modify cars and re-engineer stuff know nothing about what they are doing and are only hurting themselves, even if they get better performance from said mods. We should all be driving bone stock cars around every day.

 

i dont have it, but i sprayed my turbo and manifold with the 1200 degree engine enamel, and it hasnt peeled yet.

 

That's just paint... Doesn't have a damn thing to do with the price of heatwrap in China... lol

 

Actually NZ_87_TURBO makes a good point. The amount of time spent in boost (and thus making hot air) is only a small proportion of the total driving time. Most of the time the engine bay air is much hotter than the air in the turbo-IC pipe, so that pipe will be absorbing heat instead of rejecting it. This will make the pipe hotter on average than brief temp spikes from boost will. IMO if you're going to insulate one you should do the other too.

And how is this pointless little rant even vaugely related to a discussion about the stock heat shields on a stock turbo? Did you read the thread title? Are you trying to tell us removing them (sorry, "re-engineering" them) is an improvement?

 

I think since i cant reuse the stockers im gonna try and fab up some new ones out of sheet metal, but it sure seems like engine bay temps and heat soak are a big thing on this forum, which they should be because thats one thing that is ofter over looked.... thanx for all the input guys!!!

 

Anyone who recommends that the heat shields be removed or are somehow pointless has no business working on cars. Mazda put them there for a reason, and there is a reason that almost EVERY SINGLE car produced has some kind of shielding on the manifold.

Without the manifold shields (especially in turbo cars) all the wiring and rubber in that area gets totally baked. This includes the coolant line to the heater core (which will burst and leave you at the side of the road), the engine mount (which will break on a hard launch), the emissions harness (which runs the fuel injection system) and all the vacuum hoses and sensors (pressure/boost, idle adjust pot, ABS pump, wiper motor, etc. etc.). Suddenly removal of that little shield creates a huge amount of problems.

As a practical example, my car started out life as NA, and the heat shields were always in place. When I installed the turbo, I did not shield the turbine housing or manifold and was absolutely STUNNED at how much extra heat was in the engine bay. Hoses in that area which were less then a year old suddenly became rock hard, and the insulation on the emissions harness where it crosses that area dried out and cracked within a week. Now that I have heat wrapped the manifold and turbine housing, I can comfortably lay my hand on the wrap while the engine is running...

Heat wrap is cheap, but it can be a pain in the butt with the shape of the turbine housing and manifold. Try to use the thinner 1" wrap and just keep wrapping until the whole thing is covered. Turbo blankets are best for the turbine but are expensive. Another option is to make a shield out of metal, or just buy a new stock shield.

 

Agreed... I do spend alot of time in boost though... Plenty of open roads around these parts...

 

What about using something like http://cgi.ebay.com/Thermo-Shield-Ho...item5676857437 <that on all the wires and such down in that area, does this stuff work to protect them against heat like it says? Also if it does is there another place to get this stuff or maybe a cheaper type that works the same?

Thanx

 

in order to use turbo blankets do we have to remove the turbo? i def. gotta start wrapping some things up!

 

it's easier w/ the turbo off, but i think it can be done w/ it on.

 

anybody ever tried that stuff i listed?

 

Turbo blankets can be installed with the turbo on... Helps to remove the TID and oil lines...

 

It's a hell of a lot easier to put the heat shields on the turbo/manifold then it is to wrap each individual wire and hose in shielding. And that heat tape is a real pain in the butt to remove once it has cured...

 

I bought the Turbo blanket and wrapped my dp. The engine bay heat is almost nil. Well worth it if you ask me. BUt, buy a blanket for your turbo you can take off and reuse. Some are taped? together and only work with one application.

 

I was just wondering if that stuff did any good. For maybe just wraping around the main group of wires that run right by the turbo, but yes I plan on getting a turbo blanket very soon... Also, I saw somewhere where they were selling some dills you put on your hood hinges back at the windshield that like lifted it up at the back where when its closed its not all the way closed at the back, do Those things work, to let hot air back or let cold air in?

Thanx for all the input guys

 

I bought the stealth turbo wrap and downpipe wrap from speedmachine, it keeps the temps down very well, but it smokes like crazy for the first 30 minutes or so on the turbo, I called them its just the coating thats on there