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B4 I was 250T

Primary wastegate porting

25 posts in this topic

You could try here:

Turbo Care NZ

Phone number: 03 366 9360
After Hours: 021 393 493
Email: info@turbocare.co.nz
Fax number: 03 366 9370

 

 

They are based in Papanui, but don't know anything about them, came across them while looking for something else turbo related.

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I believe they rebuilt the turbo in my RA, and so far that's running without issue, so one can assume they do decent work, haha.

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Maybe Steve Murch? He does make his own turbos and rebuild IHI units sooo.

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I'm sure this has crossed your mind, but just in case all you need is a little encouragement....... DIY

 

If its just the wastegate that needs porting and you're not trying to port and polish the scroll of the turbo then absolutely DIY 

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Get a carbide tip for a dremel and have a go yourself dude. There's plenty of youtube videos showing how to do it 

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Don't the primary turbos on these die if going to a bigger downpipe/de-cat? Wouldn't porting have a similar effect?

Or was that earlier models?

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Would have thought it'd have the opposite effect. Negating the potential overboost caused by decats/free flowing exhausts as the port would then 'technically' flow more at a given duty cycle

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Yea, primary has the gate secondary does not.

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2 minutes ago, A_J_T said:

Yea, primary has the gate secondary does not.

Right. I was thinking the other way around. Cheers

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4 hours ago, A_J_T said:

I'm sure this has crossed your mind, but just in case all you need is a little encouragement....... DIY

 

If its just the wastegate that needs porting and you're not trying to port and polish the scroll of the turbo then absolutely DIY 

Oh it crossed my mind but I also don't trust myself and can't afford to screw it up! But thanks for the vote of confidence ;)

 

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Look out for a spare from pick a part, doesn't matter if it has a stuffed bearing, just crack into the exhaust housing! 

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I believe someone here (and I don't remember who but I think it may have been Rosssub or Lachlan) did it. Apparently the flapper is bigger and a little bit of material can be removed. Wish I could remember who did it?? :|

5 minutes ago, Jono24 said:

Look out for a spare from pick a part, doesn't matter if it has a stuffed bearing, just crack into the exhaust housing! 

Don't remember when I last went to pick a part but overtime I've been they've never once had a tt BE/BH :(

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20 minutes ago, B4 I was 250T said:

I believe someone here (and I don't remember who but I think it may have been Rosssub or Lachlan) did it. Apparently the flapper is bigger and a little bit of material can be removed. Wish I could remember who did it?? :|

Don't remember when I last went to pick a part but overtime I've been they've never once had a tt BE/BH :(

Yeah Rosssub did... 

 

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Thank you Les!!! Knew I'd seen it somewhere! And so that's what I'm wanting to get done (also why I don't want to DIY it myself, not a lot of room for error)

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Not a problem dude! Yeah I have a couple of spare vf13s for the bg5 that I was gonna do the same but just haven't really had the time.

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11 hours ago, B4 I was 250T said:

Don't remember when I last went to pick a part but overtime I've been they've never once had a tt BE/BH :(

 Hornby has at least one TT currently, intake and exhaust headers have been removed so the turbos are just sitting there

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Is it worth it? Is it really going to make much of a difference?

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imo removing the V-Band holding the housing to the CHRA would make the job alot easier and eliminate the risk of metal filings getting places they shouldn't be. 

 

The most difficult part of this entire processes is actually removing the turbo from the car :rolleyes:

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10 hours ago, ADIKT said:

Is it worth it? Is it really going to make much of a difference?

I don't know if it is but at the same time why not? I have a spare primary that's off the car at the mo and because I refuse to ever go S/T I might as well do everything else I can. If it makes a difference, great, if not then I haven't really lost anything :)

 

 

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According to some it helps maintain normal boost levels after decatting the primary downpipe

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From memory when my primary was off the car, which may be the spare you have anyway (?? my memory is shite tho!!) or was that the secondary? anyway I think the wastegate flapper opens past 90 deg when its disconnected, so it may be able to be bored in a mill, which any engineering shop with a mill ought to be able to do.

 

The one on the Track Hacks TD-05 does anyway.

 

PS: you need to update your banner!!

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Secondary my friend ;) And yeah, I do need to update banner lol :D A workmate suggested Cylinder Head Specialists? 

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