Turbo Boost Issues

[Michael Montgomery]

Looks good hardest part now fitting the front casing.

 

[Michael Montgomery]

Back and forth several times making small adjustments. No CNC unfortunately so tiresome efforts for both the guy milling and me lol

 

[Michael Montgomery]

A bit of clean up and hand tested for free play.... looking good just now have to fit it to try it out guys.

 

[Michael Montgomery]

Guys all fitted now and testing to commence in the next week or so.

Been advised to keep revs limited to 1500 rpm and in doing so on the highway didn't go over 65-70 kph. This was about 0.1 bar on the turbo gauge. Some sticking and blade scraping here and there gentle trying to edge it in playfully. Will hopefully ease up the boost gradually bit by bit no rush intended.

Got to say the turbo sound has changed dramatically. Will inspect the front housing blade next week to see how it looks and report back.

Thanks

 

[Andy]

What was the outcome to this dervis......no update!!

 

[Michael Montgomery]

Andy, it didn't turn out well tbh. The turbine was comprised based on milling to fit on the backplate of the front turbo housing and what looked pretty ok beforehand upon fitting and running in clearly unbalanced there onwards under some 100,000 cycles or so proved a disaster after two days with blooms of grey / white smoke.

The bottom line blew the CT26 turbo!! Ops

To fix this I ordered a1HD-FTE larger Chinese turbo on eBay branded maXpeedingrods. Also had to make a flange adaptor for the front air duct to fit right.
Unfortunately, the actuator was problematic. Not tested or set up right a quality control issue so had to modify this and make it work right.

Conclusion running close to a year now no issues. Better response and power spooling at 1100 RPM onwards and boosting up to 1.3 bar max limited by the actuator.