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If you get an oil leak the foam traps the oil and can become flammable. (this is primarily an AUS thing if you do country work, oil and the fractions/seeds and fluff from spinifex when coated in oil becomes very flammable)
it makes inspections on the engine harder and hides leaks as well as in some cases making the apparent leak point move.
Removing the heat shielding shouldn't change the fuel consumption of the vehicle normally but in proper cold weather would extend the warm up times.
Are you talking about the acoustic cover here?Quote:
Originally Posted by Blknight.aus
Yep. The so called 'acoustic' cover is in my view an attempt to 'mystify' the engine bay, and serves no useful purpose. But then, I'm deaf. Mine has been gone for years, as it just gets in the way and hides things I need to see. Of course, as Dave says, in this country the fire risk is very real.Quote:
Originally Posted by Blknight.aus
I'm interested in the heat shield topic though. Mine fell off, the thing cracked at the bolt holes. Should I get another?
My car came minus the acoustics cover. PO was of the same view and said he binned it.
My heat shield has been rubbing on the oil cooler pipe, that runs behind the engine, as well as the heat pipe that runs on top of the engine just above the shielding. It has flat spotted it along half of its length.
I drove for an hour or so tonight without the shield. Checked it out when I got home and nothing seemed overly hot.
Strange thing is, the car sounded different without it. I get the vibrations at 1950-2500rpm. However, it seems to have lessened or just sounds different. not sure if maybe it was the heat shielding vibrating (given it seemed to be rubbing on everything)
Yeh I'm thinking I might give one of those turbo heat covers ago. I have some exhaust wrap so I think I might give that a go too. Not sure If I will need to remove it all every time you change the filters
Sierrafery, I must qualify my statement, with the preface of IMO.
.... "The heat shield does not shield the surrounding objects from heat from the turbo. At the least, it stops people touching the hot bits. At best, it directs air over the turbo, to dissipate the heat." I have followed your threads, and have always found them to be informative, and well written. I am just an old fashioned dinosaur, perhaps a bit pedantic. And Dave, don't think I'll try cooking pies while bouncing around on the beach. Still, probably worth a try on the bitumen .
I personally reccomend removing the plastic acoustic cover for reasons already discussed.
the metal heatshield for the exhaust is a double edged sword. IF you're going to look after it keep it, if you're going to neglect it get rid of it.
I advise you keep it and look after it for 3 main reasons other than the fun one of its a great warmer
1. It protects some parts from exhaust manifold and turbo radiated heat.
2. It ducts airflow past the turbo helping reduce radiated heat levels
3. it prevents things from falling onto your turbo and the manifold
IF you dont look after it or its mounts it will drop down and rub on things you dont want it to and it will develop a rattle you wont find easily.
I think its more imortant to have it in the disco than the deefer but still wouldnt take it out of a deefer even if it didnt have any engineering practical purpose. Its good to cook on.
Clintoo, this is one of the guys I was telling you about. Along with fellw gentleman JC in Hobart, and a few I have yet to have the pleasure of meeting, ignore his advice at your peril!!
ptpturboblankets.com/.../UT%20Performance%20Analysis%20of%20PTP%20Turbo...
or Google University of Austin texas turbo blankets.
I found it very interesting and have bought one.
It is funded by PTP but looks pretty good.
Regards Philip A
Or try this
http://www.motoiq.com/MagazineArticles/ID/3631/Nerd-O-Scope-Keeping-The-Energy-In-Turbos-Using-PTP-Turbo-Blankets.aspx
Well done, as i said i'm mad enough to make tests on my own car if the thing is well documented and has scientific backup + logic... i fitted this kind of blanket more than one year ago and even if the turbo is small it has a benefic effect... the gist is that the blanket is only o the turbine side where the exhaust gas is circulating it doesnt affect the compressor side or the oil circuit, on the contrary the shield is protecting the oil from exhaust gas radiant heat and increases the gas velocity...in a nutshell: it has no adverse effects only benefits....believe me or not:cool:
I should add,
Turbo wraps and "blankets" are a good idea BUT.
in the td5 you need to be careful which one you get and how you put it on.
when you goto change the oil filter you'll understand why if you've got the wrong one.