Brazil Posted September 30, 2015 Share Posted September 30, 2015 I have 2x hairline cracks on the Turbo housing of my HKS T04Z what should I do? Why did this happen, has it happened to anybody here? Where and how much would a replacement cost me? Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted September 30, 2015 Share Posted September 30, 2015 You should be able to order a new turbine housing for that, and it won't be too expensive TB Developments on here may be able to sort it, if not try Owen Developments. When it was used, did it have a turbo jacket on it? Quote Link to comment Share on other sites More sharing options...
Pudsey Posted September 30, 2015 Share Posted September 30, 2015 Sorry to hear this buddy. When I bought and sold this kit, it came with a turbo jacket and was heat wrapped on the manifold (although was mostly worn away). I never used the kit myself, and it was bought and sold as an assembly. Fingers crossed it can be easily sorted. Quote Link to comment Share on other sites More sharing options...
Brazil Posted September 30, 2015 Author Share Posted September 30, 2015 I found this on ebay but it will take ages to arrive. http://www.ebay.co.uk/itm/Turbo-Turbine-Housing-Garrett-A-R-1-15-T04E-T04Z-Twin-Scroll-64-6-74-2-P-Trim-/191689516115?hash=item2ca195e453#shpCntId Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted September 30, 2015 Share Posted September 30, 2015 I would personally want a genuine Garrett/HKS or at least a Tial housing. If you buy a cheap one you may be in the same position again in a year or so Quote Link to comment Share on other sites More sharing options...
Krister Posted September 30, 2015 Share Posted September 30, 2015 Does it leak? If not, dont worry about it. Quote Link to comment Share on other sites More sharing options...
Brazil Posted September 30, 2015 Author Share Posted September 30, 2015 Does it leak? If not, dont worry about it. I dont it does leak, is there a chance of getting it worst and harming my engine? I was thinking at the very worst I would be safe to run in the new engine like that. Quote Link to comment Share on other sites More sharing options...
Krister Posted September 30, 2015 Share Posted September 30, 2015 What could happen? Worst thing is it will crack more, start to leak to the out side and you will need to replace it. Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted September 30, 2015 Share Posted September 30, 2015 As above, though I don't think it will last very long. You could look at getting it welded, but it will be a difficult job and it won't last. Best getting a new housing before you refit it. Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted September 30, 2015 Share Posted September 30, 2015 This happened to our HKS T04Z. Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted September 30, 2015 Share Posted September 30, 2015 Was that with a turbo jacket Chris? - - - Updated - - - Was that with a turbo jacket Chris? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 30, 2015 Share Posted September 30, 2015 (edited) Please use the search engine, inputting my name and either "high nickel content" or "ni-resist" and all should become clear. Garrett is your friend, they cater for in extremis use of turbine housings in their product range. HKS, Apexi and others do not. Caveat emptor. Edited October 1, 2015 by Chris Wilson (see edit history) Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted September 30, 2015 Share Posted September 30, 2015 I thought the T04z was a Garrett turbo? As are most of the HKS range? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 1, 2015 Share Posted October 1, 2015 (edited) Garrett do two ranges of turbine housing, normal cast iron, for diesels and low EGT (fairly standard) piston engines, and high nickel content cast iron, which they call Ni-Resist, for performance and modified petrol engines, have a look at their catalogue: http://www.turbobygarrett.com/turbobygarrett/productcatalog Some high end turbo manufacturers now use a cast stainless steel alloy for the turbine housings and external wastegates. Very modern technology casts the exhaust manifold and turbine housing as a single unit. As far as I know these are all in high nickel content alloys. The anti shaling and anti cracking properties of these high nickel content alloys V grey cast iron are as chalk and cheese. Edited October 1, 2015 by Chris Wilson (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 1, 2015 Share Posted October 1, 2015 The stock TT turbo manifold is high nickel content, hence why *NO ONE* on here has ever posted of having a cracked one, and why Toyota could cheaply weld a stainless steel expansion / contraction bellows in the middle of it. That would not be possible with a cheaper grade of casting. Quote Link to comment Share on other sites More sharing options...
herbiemercman Posted October 1, 2015 Share Posted October 1, 2015 Hi Brazil, How did you know you had this problem? Hi Chris, Again more good information, many thanks, i am not sure if i will have the ni content high spec material on my turbo, time will tell? Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted October 1, 2015 Share Posted October 1, 2015 If you're using an unbranded turbo, it will only use basic materials. Only the likes of Garrett, Born Warner, Holset and possibly Precision will use more exotic materials. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 1, 2015 Share Posted October 1, 2015 This is the sort of lengths Garrett go to as the leading turbo development company worldwide: http://www.chriswilson.tv/burst.pdf Their white papers and turbo101 references are worth studying if anyone is interested in the technology Quote Link to comment Share on other sites More sharing options...
Nic Posted October 1, 2015 Share Posted October 1, 2015 (edited) I'd recommend ATP Turbo in the US, official Garrett dealer, always had good service and fast delivery from them. http://www.atpturbo.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=tp&Category_Code=GTH Edited October 1, 2015 by Nic (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 1, 2015 Share Posted October 1, 2015 It would be perfectly acceptable to keep on running that housing, most twin turbo owners on the forum will have FAR bigger cracks in the front turbo "wastegate" port. It's pretty minor and won't affect performance so long as it doesn't get a great deal worse. Quote Link to comment Share on other sites More sharing options...
herbiemercman Posted October 5, 2015 Share Posted October 5, 2015 Am i correct in thinking that the garret turbos would be 5 x the cost of the ones supplied in the complete NA/T kits? Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted October 5, 2015 Share Posted October 5, 2015 Am i correct in thinking that the garret turbos would be 5 x the cost of the ones supplied in the complete NA/T kits? Yes. But they will perform much better. Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted October 5, 2015 Share Posted October 5, 2015 Was that with a turbo jacket Chris? - - - Updated - - - Was that with a turbo jacket Chris? Sorry only just seen this. Yeah, we had a DEi T4 Turbo Blanket. Quote Link to comment Share on other sites More sharing options...
herbiemercman Posted October 5, 2015 Share Posted October 5, 2015 Hi j-jza80, Yep it is like everything else, you get what you pay for, but there is also the thing we used in engineering when we did "cost benefit analysis" ,CBA, and we also carried out FFP ,fit for purpose, i think my aquisition is FFP, if i only get 2 years out of it, i am happy, we also carried out FMEA's failure mode and effect analysis, where you look at the gravity of failure, safety being top of the scale, cost was at the lower levels. Some one once told me that many British cars in scrap yards had some expensive components which would last 50 years and most of their cars were in the scrap yards after only 8 years, they went bust. I only cover circa 1,500 miles / yr in my mk4 toy, so i think my turbo will be ok for my requirements. There are also many members who have good things to report about the cheaper turbos they are running. Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted October 5, 2015 Share Posted October 5, 2015 It's not just longevity, performance is in a completely different league. A cheap turbo may spool up 2000rpm further up the Rev range for the same power, which makes a hell of a difference to the way the car drives. Also, the cheap turbos are very generic. I could order a Garrett turbo now, and specify the size of the compressor and turbine wheels/housings to suit my requirements perfectly. This is not possible with the cheaper turbos. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.