Turbo: High-flow Or Upgrade

[esir]

Hey fellas

I read that the M35's turbos usually cook around the 100k km mark, regardless of the fact ill accept it to be true, however is the best cure/prevention to this problem to either:

1. High-flow the stock turbo or

2. Upgrade the turbo altogether, whatever fits im not into it that much

And in this case the car already has a custom dump pipe, thoughts?

[DrLui]

A lot of information in this thread here

http://www.sau.com.au/forums/index.php?/topic/442392-M35-Turbo-Upgrade.

[Brick]

Pretty simply unless you plan to spend big bucks, just go high flow

[V28VX37]

Pretty simply unless you plan to spend big bucks, just go high flow

+1, a lot more mucking around with changing turbos, including modifying your dump/exhaust. Also, more lag, because you can't help yourself going bigger when changing turbos.

Highflow + low cell cat + more boost + good tune = fun

[esir]

I read boring out the oil line to the turbo from 1mm to 3mm is a great countermeasure too, apparently you cant have too much oil to a turbo?

[Jetwreck]

just saying....with a couple of simple search's there is so much info on this.

*if not after more HP. Just get a standard rebuild(make sure its from a turbo builder that does not have a problem with idle oil pressure....so no ling long cheapys)...drill out the banjo's in the sump and block to 2mm and replace the standard oil line to the turbo with a filtered one from motorsport connections(make sure its the line that suits your core).

*if after more HP use the search engine

[scotty nm35]

I read boring out the oil line to the turbo from 1mm to 3mm is a great countermeasure too, apparently you cant have too much oil to a turbo?

Oh, yes you can...

just saying....with a couple of simple search's there is so much info on this.

*if not after more HP. Just get a standard rebuild(make sure its from a turbo builder that does not have a problem with idle oil pressure....so no ling long cheapys)...drill out the banjo's in the sump and block to 2mm and replace the standard oil line to the turbo with a filtered one from motorsport connections(make sure its the line that suits your core).

*if after more HP use the search engine

After burning many thousands on highflow hack jobs over the years I can confirm this. Unfortunately, internally not all turbo's are the same. Some are designed to fail.

Definitely use a braided line with a filter preferably, as that way they can't pull out the oil contamination card.

No need to change the stock turbo until it lets go, unless you really want to. I have seen the stock turbo go for 250+ thousand in a well serviced car.

[esir]

Ye im very scared about this stock turbo issue, im not a power freak but id like to know i can give it the odd squirt and i wont be too scared about frying anything without spending a fortune on a cure

[Ben C34]

Sell the car then.

[nickcorr]

Mine ran on the stock turbo with Scotty intake, but stock dump, for more than 5 years without any turbo issues...

Kept it on a diet of regularly changed full synthetic 10/40 and good quality filters. Also dumped the K&N for a paper based airfilter to keep the air flow sensor honest...

Always had the "new turbo" fund ready just in case, but in the end was able to use that addition spend on my 370GT sedan rather than buying the 350GT I had budget for...