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  • Donating Members
  • Member For: 17y 11m 9d
  • Gender: Male
  • Location: Ballarat

About to pull the bolts out of the top of the turbo to drill them out to let more oil and coolant. These are ones with the hoses running to them. The current hole is about 3mm; I’m taking it out to about 5mm. This will let more coolant in to aid the cooling of the turbo. Very basic mod and should help a bit too.

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https://www.fordxr6turbo.com/forum/topic/36758-cooling-turbo/
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  • Member
  • Member For: 18y 8m 18d
  • Gender: Male
  • Location: Brisbane, QLD

mmmm interesting. Not sure what the thickness of the bolts are, nor the pressure running through them but hope a warranty issue doesn't ever come about. I've seen a few blokes around here that are doing the bonnet vents for cooling with impressive results. Not as quick or easy, but maybe worth it if you got high temps.

  • Still have a turbo, it's just on a diesel.
  • Lifetime Members
  • Member For: 19y 11m 10d
  • Gender: Male
  • Location: The 8th Dimension

I would get an oil cooler before I'd start drilling out the turbo.

  • Donating Members
  • Member For: 17y 11m 9d
  • Gender: Male
  • Location: Ballarat

You'll find the bolts on the Territory's turbo are a bit bigger then the normal XR6t, I'll get the photos up when I finished. You can buy the bolts with the bigger hole in it too. But I'll just do it myself.

  • Moar Powar Babeh
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  • Member For: 19y 8m 25d
  • Gender: Male
  • Location: Perth

you do realies there is a restrictor orifice in the turbo feed line thats probably going to counter act any increase in the size of the ports in the oil feed fitting? take the orifice out and your just about guaranteed a turbo oil seal failure...You probably see more benefit in just cleaning the turbo oil supply screen. Since when is turbo ouver heating an issue with these cars anyway...? :spoton:

  • Moar Powar Babeh
  • Lifetime Members
  • Member For: 19y 8m 25d
  • Gender: Male
  • Location: Perth

There is also a restrictor fitted in the turbo oil feed port under they banjo bolt the secures the oil feed pipe. Have a read about the oil pressure supply requirements on garrett's web page. You serioulsy dont want to over pressurise the bearing housing.....

  • Donating Members
  • Member For: 17y 11m 9d
  • Gender: Male
  • Location: Ballarat

Sorry mate, I was talking about the coolant hoses going to the turbo. There are two of them. This will be my frist change than. And with opening these holes in will allow more flow, and take heat away faster.

  • Formerly Turbo6
  • Donating Members
  • Member For: 22y 5m 9d
  • Location: North Brisbane

Mate, don't waste your time and effort. There is nothing to be gained by doing this.

There is an oil restrictor in the oil supply for a reason - the bearings do not require what the oil pump can supply and I am sure Garrett know what size the coolant holes should be. It is the air charge I would be focussing on, not the piddly little amount of coolant.

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