~Slideways~ Posted May 30, 2016 Share Posted May 30, 2016 Hi guys, I have a Holset HX35 turbo which is going on my race car project, it's the internal wastegate with 5 bolt downpipe flange type. I'm thinking about machining it down and welding on a 3" v-band flange as well as welding up the internal wastegate (will use external). Does anyone have a suggestions of who in Wellington can do this, and do it properly so it wont crack? i.e. not just mig it on cold. Since it is going on a track car it is likely to get hotter than a road car so I don't want to be dealing with cracks etc. Alternatively I would need to get a flange laser cut since I can't find anyone with this pattern and I need to block the wastegate anyway. Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted May 30, 2016 Author Share Posted May 30, 2016 Flange pattern: Would machine down (lathe maybe?) the rear section to be flush with the wastegate flapper surface, which gives a flat surface to weld the v-band to. Added bonus is a shorter section of 2.5" 'bottle neck' in the housing. Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted May 30, 2016 Share Posted May 30, 2016 No doubt possible but I'd make a bolt on adaptor if I was you. Edited. Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted May 30, 2016 Author Share Posted May 30, 2016 No doubt possible but I'd make a bolt on adaptor if I was you. Edited. Due to the risk of cracking? Quote Link to comment Share on other sites More sharing options...
mjrstar Posted May 30, 2016 Share Posted May 30, 2016 If holset is anything like the borgwarner or Garrett you should be able to find a housing which has the attributes you need for less than the machining costs to modify the existing unit. suggest find what you are looking for on somewhere like extreme PSI then buy via EBAY for a fraction of the price. it will be worth if for the smoother flow through the housing as you delete the cutout for the entry to the back side of the wastegate flapper. EDIT Such as: (depending on whee sizing) http://www.ebay.com/itm/NEW-Hx35-H1C-18cm-Holset-Turbine-Housing-3519410-/172217973210 Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted May 30, 2016 Author Share Posted May 30, 2016 I've messaged 'Orrsum Laser Services' to see if they can cut me a flange using the housing as a pattern. Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted May 31, 2016 Author Share Posted May 31, 2016 If holset is anything like the borgwarner or Garrett you should be able to find a housing which has the attributes you need for less than the machining costs to modify the existing unit. suggest find what you are looking for on somewhere like extreme PSI then buy via EBAY for a fraction of the price. it will be worth if for the smoother flow through the housing as you delete the cutout for the entry to the back side of the wastegate flapper. EDIT Such as: (depending on whee sizing) http://www.ebay.com/itm/NEW-Hx35-H1C-18cm-Holset-Turbine-Housing-3519410-/172217973210 The 12cm divided housing is the sought after one and makes it hard to find. There is a vband housing be the size is unique to Holset so would need machining anyway. That one you linked is an 18cm housing so far too big for what I need, but thanks for the suggestion (that 4 bolt type would be easier to work with). 1 Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted May 31, 2016 Author Share Posted May 31, 2016 Also, what is with the crazy shipping costs on ebay!? For example a $10 gasket is $95 USD to ship! I had the same problem with trying to get a tiny brake flaring part, the shipping was going to be $60 usd for a 5c coin size part (which was $2.50 and they refused to use anything but USPS. Quote Link to comment Share on other sites More sharing options...
xsspeed Posted May 31, 2016 Share Posted May 31, 2016 ship stateside and use youshop or similar Quote Link to comment Share on other sites More sharing options...
Stu Posted May 31, 2016 Share Posted May 31, 2016 Copy what KPR did to his turbo housing? Quote Link to comment Share on other sites More sharing options...
M.H. Posted May 31, 2016 Share Posted May 31, 2016 Get the waste gate welded shut. Get a flange laser cut for the out let and weld on a v band to that. Or you can get a single entry .7ar housing from bullseye Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted May 31, 2016 Author Share Posted May 31, 2016 Copy what KPR did to his turbo housing? Searched and yes, that's exactly what I am talking about. 1 Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted May 31, 2016 Author Share Posted May 31, 2016 Get the waste gate welded shut. Get a flange laser cut for the out let and weld on a v band to that. Or you can get a single entry .7ar housing from bullseye Flange with vband is the 2nd option, I need a gasket to do with so sourcing one now. Quote Link to comment Share on other sites More sharing options...
datlow Posted May 31, 2016 Share Posted May 31, 2016 Steve murch Motorsport engineering is the nz holset/turbos in general man to talk to imo Quote Link to comment Share on other sites More sharing options...
cute wee gem Posted May 31, 2016 Share Posted May 31, 2016 The flange that bolts to that housing has a v-band on it. Just use one of them? Quote Link to comment Share on other sites More sharing options...
cute wee gem Posted May 31, 2016 Share Posted May 31, 2016 Quote Link to comment Share on other sites More sharing options...
sentra Posted May 31, 2016 Share Posted May 31, 2016 useless post - just incase you were going to get a replacement rear housing, beware that the integral vband flange on the no wastegate version of the hx35 is a weirdo and you have to machine it to fit a normal 3" vband clamp, its easy but not a easy win. Quote Link to comment Share on other sites More sharing options...
M.H. Posted May 31, 2016 Share Posted May 31, 2016 There a drawing for a hx35 outlet in the cad library Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted June 3, 2016 Author Share Posted June 3, 2016 The flange that bolts to that housing has a v-band on it. Just use one of them? The problem with these is finding one and that the v-band is a unique Holset/Cummins size so would end up having to machine or weld it anyway. Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted June 3, 2016 Author Share Posted June 3, 2016 There a drawing for a hx35 outlet in the cad library Fantastic! Have sent to the laser cutter to see if they can use it. Thanks. Quote Link to comment Share on other sites More sharing options...
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