i have an oil leak from the exhaust side of the turbo, and just wondered if the bore on the oil feed is too big, in the pic is the fitting to the turbo and is about 4-5mm, the banjo bolt has also got a hole of about 5mm, and the braided pipe has a inner diameter of about 4-5mm too, cheers phil.

 

anyone?

 

...

 

mine's a Garrett cored hybrid roller jobbie and I'd guess the restrictor is around 35 thou.... not sure what yours should be.

dunx

 

a up mate, im no expert but im pretty sure that this is too big but why would it come with such a big bored adapter both ends, pluss my turbo is under the engine now (down hill) and that wont help, whats the bore on yours in mm.

 

if memory serves me correctly it is the oil pressure that causes the problem not the flow garrett turbo req no more than 40 psi any more pressure will blow the turbo oil seals out.

 

so what happens if the seal is blown out?

 

25.4/100*35 = 1 mm approximately.

But as stated that's for a roller jobbie, can't you PM pavlo or Andy F for advice ? They work with stuff like this all day long.

HTH

dunx

 

you get oil through in to your exhaust we had this problem on a car we put a gt42rs on we forgot to restrict it in a rush to get it to tob

the restriction is uner 1mm think we had to use 0.5mm will check data on garretts site allways check with the manufactuer of the turbo if wrong can be expensive.

 

so im betting the seals are gone for sure, its a long story about my car (look in projects at IMPREZA BASED RS200), the turbo is brand new and never been to full boost yet, anyway the size of all the pipe work for the turbo feed is about 4-5mm, together with the scavenger oil pump pushing the oil pressure up through the roof didnt help, and from what you are all saying the feed needs to be around 1-1.5mm which is massively different to mine.
how hard is it to change the seals on a TDO6 25G, i boubt many have herd of them but they cant be that much differents between each turbo.

 

if it is gernal style bearing this needs to be a hole no smaller than 2mm if you use this with with a smaller than 2mm you will kill your turbo it will not get enough oil, if this is of a mitsubuhi vintage stick with 2-3mm ideal psi at the turbo between 30-40 psi

if it is a ballbearing this needs to be 1mm

hope this helps

mark

 

just done some investigating and its a oil cooled, Mitsubishi T67 TE06H-24V-8 Turbo and Journal Bearing, so it must be ok to run with the 4-5mm sized bore pipe, banjo bolt and adapter that came with it (thanks mark ), and it was all down to the scavenger pump building the oil pressure up to high, my fault.

 

no prob enjoy