Billet CNC Turbo Exhaust Housing

Moderator: DLRA

Post Reply
User avatar
dplecko
Posts: 76
Joined: Sun Jan 29, 2012 9:12 pm
Contact:

Billet CNC Turbo Exhaust Housing

Post by dplecko » Mon Jun 29, 2015 1:09 am

A few dyno pressure measurements and some engine simulation determined that a different sized turbine housing was drastically required. The factory has no turbine housing A/R options available for this particular turbo so I had no choice but to make my own.

I considered 3D printing lost plastic casting but in the end due to cost and time restraints decided on welding two machined billets together. Very pleased with the result and performance.

Image

Image

Image

User avatar
Greg Watters
Posts: 759
Joined: Mon Sep 27, 2004 8:57 pm

Re: Billet CNC Turbo Exhaust Housing

Post by Greg Watters » Tue Jun 30, 2015 9:02 am

Very nice :D ,
getting too much back pressure on the old one ?

User avatar
dplecko
Posts: 76
Joined: Sun Jan 29, 2012 9:12 pm
Contact:

Re: Billet CNC Turbo Exhaust Housing

Post by dplecko » Tue Jun 30, 2015 8:52 pm

Yes back pressure was a bottleneck with the original, deciding how much to increase the A/R was the challenge. Think I got it almost spot on, boost threshold is damm close to what my spreadsheet predicted. The motor is much 'happier' now, boost pressure is higher than exhaust pressure.

Post Reply