CamB 48 Report post Posted October 8, 2015 So a pretty niche question, but here goes. I have an excavator-spec HX35. The good is that it has a non-WG 12cm divided turbine housing. The bad is that it has a 46/83mm (thats 30 trim...) coldside. I have aspirations of more power than that (M10B20, built accordingly). The compressor wheel looks like this: So what I have found at some stage in the past is a 50/78mm wheel and housing. This was a great setup in my head until I found out the one I had was 83mm exducer (I expected 78mm). So when I put the smaller wheel on it looks like this (note the gap between the edge of the wheel and the start of the backplate): So the question is ... will that affect performance? Or am I better to go hunting for a 83mm solution, either with a matching housing (some HX35, some HX40 fit the bill in 54mm or 56mm) or possibly find a 54/83mm (54mm-ish) wheel and get one of the housings I have machined to suit by crunchy? Anyone else an expert on these things? Quote Share this post Link to post Share on other sites
gjm 3258 Report post Posted October 8, 2015 No idea. But you know the man who will know. Quote Share this post Link to post Share on other sites
CamB 48 Report post Posted October 8, 2015 (edited) No idea. But you know the man who will know. I do - I hope he sees the thread.Had another look - having taken off the silencing ring on the 50mm inducer compressor housing I have, I can see machining out to 54mm (or possibly even 56mm) is looking pretty feasible. In the 2nd pic the tape is 57mm in diameter. Edited October 8, 2015 by CamB 1 Quote Share this post Link to post Share on other sites
richard.pykett 36 Report post Posted October 8, 2015 Speak with Steve Murch, Cam Quote Share this post Link to post Share on other sites
