Removing heat shield - turbo

[clintooo]

I was changing the oil cooler hose today.
When I removed the heat shield to get to the hose, I noticed a couple of things:

sensor wires have had the outer plastic covers melt. Replacing that was the easiest part of the job.

Missing a nut off the exhaust manifold.

Rubbing of heat shield on the metal oil cooler line.

Couple of pics below.

114041

114042

114043

114044

I managed to replace the oil cooler hose. Was a bitch to get off. It was fused to the metal pipe, so I had to cut it off. Ended up having to remove two bolts on the bell housing that hold the metal cooler pipe on. The cooler hose is so short, there is no way you can flex the hose to get it over the two ends. Another tight and fiddly job. I can see why people aren't in a hurry to do it.

No idea why the manifold nut was missing. It looks like the manifold has been off before. The nuts on the heat shield were easy to get out (particularly the one off the turbo), and there was some blue sealant around the edges of the manifold.

I had the correct nut in my box of nuts so I have tightened it up. I marked the stud, and it wasn't spinning. So no idea why it was missing or left off.

The oil cooler pipe has a bit of rubbing on it, but it is pretty minor. I was going to cut that corner out of the heat shield.

But I was wanting to leave it off for a while to see if it seals up the exhaust manifold. Does anyone see any issue with doing that.

I have seen a few posts where people recommend removing the heat shielding altogether (but I think they may have been on defenders).

[sierrafery]

Depends for how long and how you drive it while it's off, it might cook the windscreen washer tubing and the foam on the bonnet...as about leaving it off IMO it's not a gain cos the turbo likes heat, i have a titanium cover fitted to mine and it seems to me that it runs better with it....

I have seen a few posts where people recommend removing the heat shielding altogether
for those who are recommending that^^^ i recommend to read this Turbocharger Heat Shielding - Fact Or Fiction - Import Tuner Magazine (http://www.superstreetonline.com/how-to/engine/impp-1103-turbocharger-heat-shielding-fact-fiction/) ... and as i said i feel improvement on my own after i fitted one

[clintooo]

I was just going to drive it to work for the week and see if I'm still getting a leak on number 5. Just 30 min drive in light traffic (I go against peak traffic flows). I cleaned up the soot so will see if it is still blowing.

Interesting article thanks.

where did you get your Ti heat shielding from?

[sierrafery]

Amazon.com directly from Taiwan :cool: ... but i see now cheaper on ebay T3 Titanium Turbo Blanket Heat Shield Barrier Turbo charger Cover Wrap 2016 high | eBay (http://www.ebay.co.uk/itm/152183151868)

[rangieman]

Amazon.com directly from Taiwan :cool: ... but i see now cheaper on ebay T3 Titanium Turbo Blanket Heat Shield Barrier Turbo charger Cover Wrap 2016 high | eBay (http://www.ebay.co.uk/itm/152183151868)
Yep and some that send to Oz or are in Oz at varied prices;)

T3 Titanium Turbo Blanket | eBay (http://www.ebay.com.au/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR0.TRC0.H0.TRS0&_nkw=T3+Titanium+Turbo+Blanket&_sacat=0)

[clintooo]

thanks for that.

Did you use any exhaust wrap? I see some sell it with the cover. I have a roll of it on the shelf. Was left over from a project at work. I had used a bit of it to insulate a coffee machine boiler. Not sure what to warp though. Is it just the top of the down pipe?

[bob10]

Depends for how long and how you drive it while it's off, it might cook the windscreen washer tubing and the foam on the bonnet...as about leaving it off IMO it's not a gain cos the turbo likes heat, i have a titanium cover fitted to mine and it seems to me that it runs better with it....

for those who are recommending that^^^ i recommend to read this Turbocharger Heat Shielding - Fact Or Fiction - Import Tuner Magazine (http://www.superstreetonline.com/how-to/engine/impp-1103-turbocharger-heat-shielding-fact-fiction/) ... and as i said i feel improvement on my own after i fitted one

I think you are getting the LR heat shield mixed up with a turbo blanket. 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. The turbo blanket looks interesting, but all the data given is based on high performance petrol engines, where there is more heat generated than on a diesel. I would like to try one though.

I have had the LR heat shield, engine acoustic cover, and under bonnet cover removed for about 2 years. The last two because they just either got saturated with oil, or fell off. [ before I took off the heat shield] Now I can spot any oil leaks or exhaust leaks early. I have driven perhaps 20,000 km's with no noticeable adverse effects. I don't advise any one else to do this, but it works for me. I'm not interested in arguing the point.

[Blknight.aus]

remove the acoustic covers by all means I highly reccomend this.

DO NOT remove the turbo heat shield.

its the perfect shape and size for reheating

4n20 traveller pies
party pies
sausage rolls
garlic breads
pasties.
wraps and kebabs.

[sierrafery]

I'm not interested arguing either, i just want to respond that i didnt mix the factory fitted heat shield with a blanket just read few posts where members recommended to remove it especially "to let the turbo cool better", or as you said
..... 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. and my recommendation was to show that removing the shield has no benefit at all and dissipating the heat means cooling it a bit too for me
As about it's real purpose who knows... that's what RAVE sais:

....A heatshield is attached to the left hand side of the engine to protect adjacent components from the heat generated
at the turbocharger....
I declare that I felt an improvement in throttle response after the blanket was fitted and the cooling seems to be more efficient with it(i hope it's not a placebo effect:cool:)... and i'm not alone(even though the involved diesel engine is huge(which means it doesnt get so hot:)) Installed a turbo blanket, interesting results! - Diesel Place : Chevrolet and GMC Diesel Truck Forums (http://www.dieselplace.com/forum/63-gm-diesel-engines/21-6-5l-diesel-engine/470-6-5-6-2-high-performance-engine-modifications/475755-installed-turbo-blanket-interesting-results.html)

Did you use any exhaust wrap? ...
Mine came without it so no but i'm thinking of buying some, IMO it should be applied along the downpipe untill it leaves the engine bay

[sierrafery]

remove the acoustic covers by all means I highly reccomend this.

DO NOT remove the turbo heat shield.

its the perfect shape and size for reheating

4n20 traveller pies
party pies
sausage rolls
garlic breads
pasties.
wraps and kebabs.
What's the reason for that please?...i had mine removed based on a recommendation and got increased fuel consumption after that especially in winter(which might not be an issue in OZ) but slightly higher in summer too so i refitted it after less than a year and it's better with it.

[Blknight.aus]

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.

[clintooo]

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.



Are you talking about the acoustic cover here?

[Tins]

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.

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.

I'm interested in the heat shield topic though. Mine fell off, the thing cracked at the bolt holes. Should I get another?

[clintooo]

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

[bob10]

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 .

[Blknight.aus]

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.

[gavinwibrow]

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!!

[PhilipA]

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
(http://www.motoiq.com/MagazineArticles/ID/3631/Nerd-O-Scope-Keeping-The-Energy-In-Turbos-Using-PTP-Turbo-Blankets.aspx)

[sierrafery]

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:

[Blknight.aus]

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.

[Blknight.aus]

the trick to the hidden heater hose is this.

once you've abused it off, (cut it with a stanly, twisted the thing with slip joints, whatever)

clean up the surfaces of the fittings, wipe them and the inside of the hose with concentrated coolant. slide the clamps onto the fittings, slide the hose up onto the smaller fitting, place the clamp in position but dont tighten it, push it all the way on and then some, lever the large end onto its fitting and the wiggle it back.

put the clamps on.

[clintooo]

well I ordered this one at lunchtime. So have I bought the correct one? :)

T3 Black Under Out Lava Turbo Blanket 5cm x 5M Black Lava Heat Wrap | eBay (http://www.ebay.com/itm/262212704347?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT)


I couldn't really tell the difference between them. The ones out of the US did look a bit better, but they were a whole lot more expensive. Turns out I only had about 2m of the exhaust, wrap, so I got this one with the wrap.

I'll post up some pics of it when it arrives.

[Blknight.aus]

dunno, im on interslow at the moment and ebay wont load.

as for the pies bouncing out.

you'd be quietly amazed at how well things stay in there.

I've never lost anything from on that heat shield yet.

its got the primary coolant hose mount up the front, the hose bend down the back the rocker cover on one side and a bend in it on the other to keep the food in place. If you happen to hit something hard enough that the delta V of the food is higher than the engine movement and vehicle movent to cause it to lift out of its position then you will have other bigger things to worry about at the time.

[sierrafery]

well I ordered this one at lunchtime. So have I bought the correct one? :)

T3 Black Under Out Lava Turbo Blanket 5cm x 5M Black Lava Heat Wrap | eBay (http://www.ebay.com/itm/262212704347?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT)


I couldn't really tell the difference between them. The ones out of the US did look a bit better, but they were a whole lot more expensive. Turns out I only had about 2m of the exhaust, wrap, so I got this one with the wrap.

I'll post up some pics of it when it arrives.
IMO you've got a good one cos when i bought mine it wasnt named "T3" just had a list of suitable turbos and GT20(like the Td5 one) was listed together with those specified in the link and as it's about small/medium size turbos you can't get any smaller shield than that only bigger....please let me know if you feel any difference after fitting it os i want to rest my mind that what i felt was not some "placebo" effect ....just be aware that any improvement in the throttle response is possible only with warmed up engine cos as long as it's not hot there's no heat to be managed
:cool:

[clintooo]

good to hear.

If I were to plug my nanocom in and record my drives to and from work for the next few days.

then do a comparison of my drives to work following installation, would that likely give us some quantitative data to compare?


not quite an even comparison, but could be better than the seat of my pants assessment.