27 replies to this topic

[fischmama]

BlackBeast, on 16 January 2012 - 03:26 PM, said:

That's not what we have found in the UK. The 3 T5s and the one T4 that are in the UK that use Garrett 2871/3071 have all needed the turbine housings welded to the manifold, as with the T3 gasket they will leak.

It think you can get a leak if you mill the lip down and not aligning it 100%. I am using the OBX adapter from ebay and so far no leaks.

[Zappo]

I have a leak on mine right now, but it is mostly due to one of the bolts coming loose. I never had a leak up until recently and I have swapped the exhaust housing out.

[JCviggen]

BlackBeast, on 16 January 2012 - 03:26 PM, said:

That's not what we have found in the UK. The 3 T5s and the one T4 that are in the UK that use Garrett 2871/3071 have all needed the turbine housings welded to the manifold, as with the T3 gasket they will leak.

My T3/T04E never leaked with a gasket...my GT2871R never leaked either and I think that one had no gasket (I got it off Johann and didn't take it off the mani but he said he got it flat enough to cold mate) 2 of my friends Garretts don't leak either... Elliot's GT3071 in the UK doesn't leak either. What DID leak for me are those pesky exhaust manifold gaskets that blow every couple trackdays That's just a habit my car had, Florian's never did strangely.

Whoever is taking the lip off the manifolds over there must not be doing a good job getting it flat. 2 flat surfaces and a gasket is all it will ever take, thousands and thousands of (OEM even) cars have their turbos on that way.

[T5Hammy]

binsky3333, on 15 January 2012 - 05:42 PM, said:

Ahh okay interesting. Right now im just planning for the future, so im getting some ideas of turbos to get. I dont think im going to do an engine build right off the bat. I would love to get up to 300WHP with stock internals. Right now i am looking into the kkk k-24. Also the Hahn 16G and 20G. Does either of those require a botton end rebuild?

I'm not trying to offend you but I think you're using words that you don't necessarily understand. I think you're best bet since you don't need to buy your parts now would be to research turbocharger's in general. One of the best sites I've found that can explain the info in a way most people understand and also teach you what you need to know about finding the right turbo is the Garret website.

Start here: Basic Turbo tech once you read all the basic, read all the intermediate, and advanced, if you can make your way through all that, you will be able to understand compressor maps and determine the most efficient turbos to use for any application (or at least get really close) also remember there are tons of turbo's that most vs members never consider because they don't get mentioned much on here.

You seem like you wanna learn this stuff so you'll probably enjoy the knowledge available there. Good luck man!

[dublin14]

I also have a T04E Turbo with ATP ultimate wastegate and it works well. NO leaks.. Very happy with the setup.

Edited by dublin14, 17 January 2012 - 12:41 PM.

[BlackBeast]

JCviggen, on 16 January 2012 - 08:40 PM, said:

My T3/T04E never leaked with a gasket...my GT2871R never leaked either and I think that one had no gasket (I got it off Johann and didn't take it off the mani but he said he got it flat enough to cold mate) 2 of my friends Garretts don't leak either... Elliot's GT3071 in the UK doesn't leak either. What DID leak for me are those pesky exhaust manifold gaskets that blow every couple trackdays That's just a habit my car had, Florian's never did strangely.

Whoever is taking the lip off the manifolds over there must not be doing a good job getting it flat. 2 flat surfaces and a gasket is all it will ever take, thousands and thousands of (OEM even) cars have their turbos on that way.

I trust the fabrication company that does the work implicitly. All the cars I have mentioned get used on a daily basis, maybe that's a contributing factor. Anyway, no more leaks unless like yourself I don't check the manifold nuts every so often.

[JCviggen]

Yes it does seem to be an issue with either the nuts or taps themselves coming loose. Must pay more attention to it next time we fit the manifold (we're rebuilding the car!)
If you have 2 near-flat surfaces and a metal gasket there is no reason for it to ever leak. When I had the T3/T4 on the car I was using it for commuting 70 miles a day for a full year and did not have any issues with the turbo/manifold connection.
I did manage to blow a T3/T04B before that due to a failure of the T3 gasket (the manifold I had at the time had an issue where it had been milled a bit too far which left a small part of the metal gasket directly exposed to the exhaust gases - after that incident I dremeled away that part of the gasket and never had an issue after that)
If there was an inherent problem with mating a standard T3 flange to a manifold everybody in the world should be welding their turbos to their manifold...as it happens that's not the norm at all and many cars came off the production line with a standard T3 and gasket. Cossie's spring to mind. Not to mention all the aftermarket manifolds out there.

Edited by JCviggen, 17 January 2012 - 08:02 AM.

[Johann]

Machined the lip on a mill and flattened with a grind stone after that. Also flattened the turbine housing with a stone. Should make a sufficient cold mated seal but one spot between the top two bolts becomes very thin/small basically leaving to little surface to seal well. Because the collector opening is left with a part of the OEM round opening a gasket won't have any support in this area and, like mentioned by JC, might burn off and enter the turbine at some point.



But worst of all of course is ATP's refusal to use a better suited T3 flange shape while, for them, it should be very little effort to do so.
Have asked them several times in the past. They do make K2X turbine housings which come with a bit more meat so one could machine the housing to fit the OEM volvo flange.